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wprunty(at)sewanee.edu Guest
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Posted: Tue Feb 09, 2010 9:56 am Post subject: vibration in mains on roll out |
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I have written about this once before and have talked with the factory several times. I have rebalanced the tires, changed to new and better tires (Customs) and dynamically balanced those plus checked for true roundness. I have balanced the wheel covers, have installed a new axel for the nose, a new nose strut (which brought the nose up and did help), and have installed a washer under the doenuts to raise the nose a bit more. I also installed new doenuts at 300 hours, have gone back to flying with 60lbs in the back if only one or two people are in the plane. I land with full flaps, flare with a little power in and stick all the way back, (on final, the plane feels like a balloon, or the hand of God sustaining you), but after touch-down and just as the speed goes under 40mph on roll out the mains shutter. They shutter a lot if you apply the brakes, especially if you are rolling down hill when you apply the brakes. They shutter none or very little (now, after doing the above) if the day is calm enough for a full falp landing and you just hold the stick back and roll out. This seems the be an issue with the angle from which weight rests on the mains, and the change in that angle as the plane slows, also perhaps a loss of pressure on the elevator, letting the nose sink a little more. (I have checked the brakes repeatedly for wear and/or sticking and seen no signs of that.) The whole thing reminds me of being on a train when the brakes are applied and your chest and head are thrown forward, minus a few obvious differences . . . . Usually the train doesn't vibrate.
I still have a second washer that I could install to get a little more up attitude for the nose, which should retard dip in the nose, such dip seeming to coincide with the onset of vibration. Otherwise I am out of ideas, so write you guys.
Question: Anyone else had vibration in the mains upon roll out and/or braking? Given everything already done to address this vibration, is raising the nose a bit more in fact the next step? Wisdoms welcomed.
In all fairness I should add that this is the nicest flying plane I have encountered, though the RV 6-A is a complete angel too, and the 6 I have flown has no vibration on roll out. Both planes, of course, have round, tube-like struts similar to what I have seen on some Cessnas, dancing like Fred Astaire chasing Ginger Rogers down the runway.
Wyatt N814BW
[quote][b]
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msausen
Joined: 25 Oct 2007 Posts: 559 Location: Appleton, WI USA
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Posted: Tue Feb 09, 2010 10:34 am Post subject: vibration in mains on roll out |
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Na…. no one else has seen that before. Seriously though, LOTS of discussion on this subject in the past and a good search of the archives will net you discussions on many of the things you have already tried. Recently there was discussion on the toe in/out and how easy it was to end up with wildly varying toe measurements with just a little movement when drilling the mains. Might be worth checking your toe adjustment.
Michael
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Wyatt Prunty
Sent: Tuesday, February 09, 2010 11:53 AM
To: rv10-list(at)matronics.com
Subject: vibration in mains on roll out
I have written about this once before and have talked with the factory several times. I have rebalanced the tires, changed to new and better tires (Customs) and dynamically balanced those plus checked for true roundness. I have balanced the wheel covers, have installed a new axel for the nose, a new nose strut (which brought the nose up and did help), and have installed a washer under the doenuts to raise the nose a bit more. I also installed new doenuts at 300 hours, have gone back to flying with 60lbs in the back if only one or two people are in the plane. I land with full flaps, flare with a little power in and stick all the way back, (on final, the plane feels like a balloon, or the hand of God sustaining you), but after touch-down and just as the speed goes under 40mph on roll out the mains shutter. They shutter a lot if you apply the brakes, especially if you are rolling down hill when you apply the brakes. They shutter none or very little (now, after doing the above) if the day is calm enough for a full falp landing and you just hold the stick back and roll out. This seems the be an issue with the angle from which weight rests on the mains, and the change in that angle as the plane slows, also perhaps a loss of pressure on the elevator, letting the nose sink a little more. (I have checked the brakes repeatedly for wear and/or sticking and seen no signs of that.) The whole thing reminds me of being on a train when the brakes are applied and your chest and head are thrown forward, minus a few obvious differences . . . . Usually the train doesn't vibrate.
I still have a second washer that I could install to get a little more up attitude for the nose, which should retard dip in the nose, such dip seeming to coincide with the onset of vibration. Otherwise I am out of ideas, so write you guys.
Question: Anyone else had vibration in the mains upon roll out and/or braking? Given everything already done to address this vibration, is raising the nose a bit more in fact the next step? Wisdoms welcomed.
In all fairness I should add that this is the nicest flying plane I have encountered, though the RV 6-A is a complete angel too, and the 6 I have flown has no vibration on roll out. Both planes, of course, have round, tube-like struts similar to what I have seen on some Cessnas, dancing like Fred Astaire chasing Ginger Rogers down the runway.
Wyatt N814BW
Quote: | http://www.matronics.com/Navigator?RV10-List | 0123456789
[quote][b]
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flysrv10(at)gmail.com Guest
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Posted: Tue Feb 09, 2010 2:22 pm Post subject: vibration in mains on roll out |
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I had the same problem with my 6 and I fasted wood stiffeners the same
length as the gear leg under the gear fairing and the problem went
away.
I have not tried it on my 10 since my problem shows up with passengers
in the back only and it is not that bad.
Do not archive
On Tue, Feb 9, 2010 at 1:30 PM, RV Builder (Michael Sausen)
<rvbuilder(at)sausen.net> wrote:
Quote: | Na…. no one else has seen that before. Seriously though, LOTS of
discussion on this subject in the past and a good search of the archives
will net you discussions on many of the things you have already tried.
Recently there was discussion on the toe in/out and how easy it was to end
up with wildly varying toe measurements with just a little movement when
drilling the mains. Might be worth checking your toe adjustment.
Michael
From: owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Wyatt Prunty
Sent: Tuesday, February 09, 2010 11:53 AM
To: rv10-list(at)matronics.com
Subject: vibration in mains on roll out
I have written about this once before and have talked with the factory
several times. I have rebalanced the tires, changed to new and better tires
(Customs) and dynamically balanced those plus checked for true roundness.
I have balanced the wheel covers, have installed a new axel for the nose, a
new nose strut (which brought the nose up and did help), and have installed
a washer under the doenuts to raise the nose a bit more. I also installed
new doenuts at 300 hours, have gone back to flying with 60lbs in the back if
only one or two people are in the plane. I land with full flaps, flare with
a little power in and stick all the way back, (on final, the plane feels
like a balloon, or the hand of God sustaining you), but after touch-down and
just as the speed goes under 40mph on roll out the mains shutter. They
shutter a lot if you apply the brakes, especially if you are rolling down
hill when you apply the brakes. They shutter none or very little (now,
after doing the above) if the day is calm enough for a full falp landing and
you just hold the stick back and roll out. This seems the be an issue with
the angle from which weight rests on the mains, and the change in that angle
as the plane slows, also perhaps a loss of pressure on the elevator, letting
the nose sink a little more. (I have checked the brakes repeatedly for wear
and/or sticking and seen no signs of that.) The whole thing reminds me of
being on a train when the brakes are applied and your chest and head are
thrown forward, minus a few obvious differences . . . . Usually the train
doesn't vibrate.
I still have a second washer that I could install to get a little more up
attitude for the nose, which should retard dip in the nose, such dip seeming
to coincide with the onset of vibration. Otherwise I am out of ideas, so
write you guys.
Question: Anyone else had vibration in the mains upon roll out and/or
braking? Given everything already done to address this vibration, is
raising the nose a bit more in fact the next step? Wisdoms welcomed.
In all fairness I should add that this is the nicest flying plane I have
encountered, though the RV 6-A is a complete angel too, and the 6 I have
flown has no vibration on roll out. Both planes, of course, have round,
tube-like struts similar to what I have seen on some Cessnas, dancing like
Fred Astaire chasing Ginger Rogers down the runway.
Wyatt N814BW
http://www.matronics.com/Navigator?RV10-List
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indigoonlatigo(at)msn.com Guest
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jkreidler
Joined: 13 Feb 2008 Posts: 151 Location: Sheboygan Falls WI
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Posted: Tue Feb 09, 2010 4:19 pm Post subject: Re: vibration in mains on roll out |
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We had this same issue, turns out our axle nuts needed to be tightened. Try re-torquing the axle nuts.
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4 Partner Build - Sheboygan Falls, WI
Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler
N44YH - Flying - #40617 |
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scottmschmidt(at)yahoo.co Guest
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Posted: Mon Feb 15, 2010 10:01 am Post subject: vibration in mains on roll out |
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Mine have shaked since day one and I have done quite a few things to try and fix it.
Here is my list of items I have tried.
1. Balance tires with wheel weights
2. New Flight Custom III tires
3. Tighten the wheel nut
4. Balanced wheel pants
5. Remove the wheel nuts and use the beads you put in the tubes that dynamically balance the tire
6. Remove Flight Custom III put a more rounded re-tread tire on
7. Made sure both wheels had toe-in between 0 and 1 degree. I had to drill out the left main with a larger bolt (after talking with Van's) to get .4 degrees of toe-in.
8. ??????
I have posted this before, but Van says that the wood on the gear has worked with RV-4's and 6's in the past but that seems like a weird fix. The problem is the gear design. The round gear is the worst design but was designed that way for cost.
I have thought about ordering a new set of gear legs but I really want someone out there to make a titanium set with the proper shape. You could add 50 more lbs to you useful load if we had titanium gear legs.
Not sure what I will try next, but I no longer worry about it and just let them shake when I land. I am switching out my brake lines for a braided line.
I will keep trying stuff and let you know when I find a fix.
Scott Schmidtscottmschmidt(at)yahoo.com
From: Wyatt Prunty <wprunty(at)sewanee.edu>
To: rv10-list(at)matronics.com
Sent: Tue, February 9, 2010 10:53:26 AM
Subject: vibration in mains on roll out
I have written about this once before and have talked with the factory several times. I have rebalanced the tires, changed to new and better tires (Customs) and dynamically balanced those plus checked for true roundness. I have balanced the wheel covers, have installed a new axel for the nose, a new nose strut (which brought the nose up and did help), and have installed a washer under the doenuts to raise the nose a bit more. I also installed new doenuts at 300 hours, have gone back to flying with 60lbs in the back if only one or two people are in the plane. I land with full flaps, flare with a little power in and stick all the way back, (on final, the plane feels like a balloon, or the hand of God sustaining you), but after touch-down and just as the speed goes under 40mph on roll out the mains shutter. They shutter a lot if you apply the brakes, especially if you are rolling down hill when you apply the brakes. They shutter none or very little (now, after doing the above) if the day is calm enough for a full falp landing and you just hold the stick back and roll out. This seems the be an issue with the angle from which weight rests on the mains, and the change in that angle as the plane slows, also perhaps a loss of pressure on the elevator, letting the nose sink a little more. (I have checked the brakes repeatedly for wear and/or sticking and seen no signs of that.) The whole thing reminds me of being on a train when the brakes are applied and your chest and head are thrown forward, minus a few obvious differences . . . . Usually the train doesn't vibrate.
I still have a second washer that I could install to get a little more up attitude for the nose, which should retard dip in the nose, such dip seeming to coincide with the onset of vibration. Otherwise I am out of ideas, so write you guys.
Question: Anyone else had vibration in the mains upon roll out and/or braking? Given everything already done to address this vibration, is raising the nose a bit more in fact the next step? Wisdoms welcomed.
In all fairness I should add that this is the nicest flying plane I have encountered, though the RV 6-A is a complete angel too, and the 6 I have flown has no vibration on roll out. Both planes, of course, have round, tube-like struts similar to what I have seen on some Cessnas, dancing like Fred Astaire chasing Ginger Rogers down the runway.
Wyatt N814BW
[quote][b]
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http://www.matronics.com/Navigator?RV10-List |
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ricksked(at)cox.net Guest
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Posted: Mon Feb 15, 2010 10:15 am Post subject: vibration in mains on roll out |
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Mine came on progressively, hold the nose up till the tail stops flying, roll out about 20 mph and hit the brakes…BRBRBRBRBRBRBRB…release the brakes….stops instantly. I’m leaning towards possible brake chatter/grab now, the intensity is never the same but the speed where I apply the brakes is usually pretty close…Anyone consider the brake pads may be the problem? It seems more annoying than anything else but with vibration comes wear at some part of the airframe. It only does it landing, I’ve never had it that fast in a taxi to make it vibrate.
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Monday, February 15, 2010 9:43 AM
To: rv10-list(at)matronics.com
Subject: Re: vibration in mains on roll out
Mine have shaked since day one and I have done quite a few things to try and fix it.
Here is my list of items I have tried.
1. Balance tires with wheel weights
2. New Flight Custom III tires
3. Tighten the wheel nut
4. Balanced wheel pants
5. Remove the wheel nuts and use the beads you put in the tubes that dynamically balance the tire
6. Remove Flight Custom III put a more rounded re-tread tire on
7. Made sure both wheels had toe-in between 0 and 1 degree. I had to drill out the left main with a larger bolt (after talking with Van's) to get .4 degrees of toe-in.
8. ??????
I have posted this before, but Van says that the wood on the gear has worked with RV-4's and 6's in the past but that seems like a weird fix. The problem is the gear design. The round gear is the worst design but was designed that way for cost.
I have thought about ordering a new set of gear legs but I really want someone out there to make a titanium set with the proper shape. You could add 50 more lbs to you useful load if we had titanium gear legs.
Not sure what I will try next, but I no longer worry about it and just let them shake when I land. I am switching out my brake lines for a braided line.
I will keep trying stuff and let you know when I find a fix.
Scott Schmidt
scottmschmidt(at)yahoo.com
From: Wyatt Prunty <wprunty(at)sewanee.edu>
To: rv10-list(at)matronics.com
Sent: Tue, February 9, 2010 10:53:26 AM
Subject: vibration in mains on roll out
I have written about this once before and have talked with the factory several times. I have rebalanced the tires, changed to new and better tires (Customs) and dynamically balanced those plus checked for true roundness. I have balanced the wheel covers, have installed a new axel for the nose, a new nose strut (which brought the nose up and did help), and have installed a washer under the doenuts to raise the nose a bit more. I also installed new doenuts at 300 hours, have gone back to flying with 60lbs in the back if only one or two people are in the plane. I land with full flaps, flare with a little power in and stick all the way back, (on final, the plane feels like a balloon, or the hand of God sustaining you), but after touch-down and just as the speed goes under 40mph on roll out the mains shutter. They shutter a lot if you apply the brakes, especially if you are rolling down hill when you apply the brakes. They shutter none or very little (now, after doing the above) if the day is calm enough for a full falp landing and you just hold the stick back and roll out. This seems the be an issue with the angle from which weight rests on the mains, and the change in that angle as the plane slows, also perhaps a loss of pressure on the elevator, letting the nose sink a little more. (I have checked the brakes repeatedly for wear and/or sticking and seen no signs of that.) The whole thing reminds me of being on a train when the brakes are applied and your chest and head are thrown forward, minus a few obvious differences . . . . Usually the train doesn't vibrate.
I still have a second washer that I could install to get a little more up attitude for the nose, which should retard dip in the nose, such dip seeming to coincide with the onset of vibration. Otherwise I am out of ideas, so write you guys.
Question: Anyone else had vibration in the mains upon roll out and/or braking? Given everything already done to address this vibration, is raising the nose a bit more in fact the next step? Wisdoms welcomed.
In all fairness I should add that this is the nicest flying plane I have encountered, though the RV 6-A is a complete angel too, and the 6 I have flown has no vibration on roll out. Both planes, of course, have round, tube-like struts similar to what I have seen on some Cessnas, dancing like Fred Astaire chasing Ginger Rogers down the runway.
Wyatt N814BW
0123456789012
[quote][b]
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partner14
Joined: 12 Jan 2008 Posts: 540 Location: Granbury Texas
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Posted: Sun Feb 21, 2010 8:39 am Post subject: vibration in mains on roll out |
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Just like the a lot of you, I ended up with a vibration that only showed itself around 40mph... takeoff or landing. This last week I installed air stop type tubes and Goodyear FC3's on the mains... but only after balancing them. First flight was UNBELIEVABLE,,, not a bit a movement... so much nicer.... but the friend flying with me, says "but what about the landing". Well the landing was also perfect.... Can't tell you how much nicer that is.... So anyway, that worked for me.... hope it continues as the tires age.
Don McDonald
Rick and Deems, see ya soon, we're leaving in the morning.
--- On Mon, 2/15/10, Rick <ricksked(at)cox.net> wrote:
Quote: |
From: Rick <ricksked(at)cox.net>
Subject: RE: vibration in mains on roll out
To: rv10-list(at)matronics.com
Date: Monday, February 15, 2010, 10:13 AM
Mine came on progressively, hold the nose up till the tail stops flying, roll out about 20 mph and hit the brakes…BRBRBRBRBRBRBRB…release the brakes….stops instantly. I’m leaning towards possible brake chatter/grab now, the intensity is never the same but the speed where I apply the brakes is usually pretty close…Anyone consider the brake pads may be the problem? It seems more annoying than anything else but with vibration comes wear at some part of the airframe. It only does it landing, I’ve never had it that fast in a taxi to make it vibrate.
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Monday, February 15, 2010 9:43 AM
To: rv10-list(at)matronics.com
Subject: Re: vibration in mains on roll out
Mine have shaked since day one and I have done quite a few things to try and fix it.
Here is my list of items I have tried.
1. Balance tires with wheel weights
2. New Flight Custom III tires
3. Tighten the wheel nut
4. Balanced wheel pants
5. Remove the wheel nuts and use the beads you put in the tubes that dynamically balance the tire
6. Remove Flight Custom III put a more rounded re-tread tire on
7. Made sure both wheels had toe-in between 0 and 1 degree. I had to drill out the left main with a larger bolt (after talking with Van's) to get .4 degrees of toe-in.
8. ??????
I have posted this before, but Van says that the wood on the gear has worked with RV-4's and 6's in the past but that seems like a weird fix. The problem is the gear design. The round gear is the worst design but was designed that way for cost.
I have thought about ordering a new set of gear legs but I really want someone out there to make a titanium set with the proper shape. You could add 50 more lbs to you useful load if we had titanium gear legs.
Not sure what I will try next, but I no longer worry about it and just let them shake when I land. I am switching out my brake lines for a braided line.
I will keep trying stuff and let you know when I find a fix.
Scott Schmidt
scottmschmidt(at)yahoo.com
From: Wyatt Prunty <wprunty(at)sewanee.edu>
To: rv10-list(at)matronics.com
Sent: Tue, February 9, 2010 10:53:26 AM
Subject: vibration in mains on roll out
I have written about this once before and have talked with the factory several times. I have rebalanced the tires, changed to new and better tires (Customs) and dynamically balanced those plus checked for true roundness. I have balanced the wheel covers, have installed a new axel for the nose, a new nose strut (which brought the nose up and did help), and have installed a washer under the doenuts to raise the nose a bit more. I also installed new doenuts at 300 hours, have gone back to flying with 60lbs in the back if only one or two people are in the plane. I land with full flaps, flare with a little power in and stick all the way back, (on final, the plane feels like a balloon, or the hand of God sustaining you), but after touch-down and just as the speed goes under 40mph on roll out the mains shutter. They shutter a lot if you apply the brakes, especially if you are rolling down hill when you apply the brakes. They shutter none or very little (now, after doing the above) if the day is calm enough for a full falp landing and you just hold the stick back and roll out. This seems the be an issue with the angle from which weight rests on the mains, and the change in that angle as the plane slows, also perhaps a loss of pressure on the elevator, letting the nose sink a little more. (I have checked the brakes repeatedly for wear and/or sticking and seen no signs of that.) The whole thing reminds me of being on a train when the brakes are applied and your chest and head are thrown forward, minus a few obvious differences . . . . Usually the train doesn't vibrate.
I still have a second washer that I could install to get a little more up attitude for the nose, which should retard dip in the nose, such dip seeming to coincide with the onset of vibration. Otherwise I am out of ideas, so write you guys.
Question: Anyone else had vibration in the mains upon roll out and/or braking? Given everything already done to address this vibration, is raising the nose a bit more in fact the next step? Wisdoms welcomed.
In all fairness I should add that this is the nicest flying plane I have encountered, though the RV 6-A is a complete angel too, and the 6 I have flown has no vibration on roll out. Both planes, of course, have round, tube-like struts similar to what I have seen on some Cessnas, dancing like Fred Astaire chasing Ginger Rogers down the runway.
Wyatt N814BW
0123456789012
3
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[quote][b]
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_________________ Don A. McDonald
40636 |
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rv10flyer
Joined: 25 Aug 2009 Posts: 364
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Posted: Thu Feb 25, 2010 5:55 am Post subject: Re: vibration in mains on roll out |
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The gear legs are flexing/twisting allowing camber and toe to change at a fast rate. I plan on stiffening mine with carbon fiber when the time comes. Back to empennage attachment.
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scottmschmidt(at)yahoo.co Guest
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Posted: Thu Feb 25, 2010 10:03 am Post subject: vibration in mains on roll out |
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Do you have any data or video to support this? Just wondering how you came up with that cause.
Also, knowing that how would you use carbon fiber to stiffen the system? Do you change the moment of inertia or just make the tube larger?
Thanks
Scott Schmidtscottmschmidt(at)yahoo.com
From: rv10flyer <wayne.gillispie(at)yahoo.com>
To: rv10-list(at)matronics.com
Sent: Thu, February 25, 2010 6:55:14 AM
Subject: Re: vibration in mains on roll out
[quote][b]
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rv10flyer
Joined: 25 Aug 2009 Posts: 364
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Posted: Thu Feb 25, 2010 1:34 pm Post subject: Re: vibration in mains on roll out |
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One of Tony Bingelis' books mentions it. I found very little info on the net, but seems to be common on tapered rod gear due to the fore and aft movement. I plan on bonding a 1" x 1" carbon fiber angle to aft side of main gear legs just prior to installing fairings. I am hoping this will stiffen it and also keep it from twisting under torsional loads as much. I want to stick with the plans as much as possible. May make it a little rougher during taxi. I won't be ready for the gear until next summer, so maybe someone else can try this or something similiar before I get to it. You guys have tried everything else from the way it looks. I am so glad I decided on experimental. This is alot of fun. By the way Scott, your trips are a big motivator for me. Can't wait to fly the family out west.
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msausen
Joined: 25 Oct 2007 Posts: 559 Location: Appleton, WI USA
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Posted: Thu Feb 25, 2010 3:53 pm Post subject: vibration in mains on roll out |
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So other than the vibration being annoying, and the potential for eventual fatigue issues, is anyone actually seeing any damage from this?
Michael
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greghale
Joined: 10 Jan 2007 Posts: 91 Location: Tulsa, Oklahoma
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Posted: Thu Feb 25, 2010 4:05 pm Post subject: Re: vibration in mains on roll out |
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DON,
I have not been able to find the Goodyear FC3 tires. Where did you purchase them? Also is the MICHELIN AIRSTOP TUBE what you used available from Aircraft Spruce?
Greg...
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_________________ Greg Hale rv10 -- N210KH
www.nwacaptain.com |
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scottmschmidt(at)yahoo.co Guest
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Posted: Thu Feb 25, 2010 5:55 pm Post subject: vibration in mains on roll out |
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No, I have not noticed any problems.
I will replace my brake lines with braided hose to prevent fatigue in the aluminum line.
-Scott
Sent from my iPhone
On Feb 25, 2010, at 3:32 PM, "RV Builder (Michael Sausen)" <rvbuilder(at)sausen.net> wrote:
So other than the vibration being annoying, and the potential for eventual fatigue issues, is anyone actually seeing any damage from this?
Michael
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rv10builder(at)verizon.ne Guest
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Posted: Thu Feb 25, 2010 6:12 pm Post subject: vibration in mains on roll out |
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Desser has both
Aircraft spruce sells the Goodyear tires. not sure about the michelins but
worth a look or a call. Just be sure you get the correct tire size.
--------------------------------------------------
From: "greghale" <ghale5224(at)aol.com>
Sent: Thursday, February 25, 2010 4:05 PM
To: <rv10-list(at)matronics.com>
Subject: Re: vibration in mains on roll out
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jcumins(at)jcis.net Guest
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Posted: Thu Feb 25, 2010 6:35 pm Post subject: vibration in mains on roll out |
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Greg
I just got 2 6:00 6ply and 5:00 5 ply fc III tires with leak stop tubes and
the 5 in tube has the 90 degree bend in the air valve like the 10 needs at
dresser.com. and they came with free talc powder.
John
40864 emp assembly and Saratoga annual from hell
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partner14
Joined: 12 Jan 2008 Posts: 540 Location: Granbury Texas
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Posted: Thu Feb 25, 2010 9:46 pm Post subject: vibration in mains on roll out |
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Greg, sorry for the abbreviation.... Goodyear Flight Custom III's... make sure you get 15X6.00X6. It is so nice to not have the vibration
--- On Thu, 2/25/10, greghale <ghale5224(at)aol.com> wrote:
Quote: |
From: greghale <ghale5224(at)aol.com>
Subject: Re: vibration in mains on roll out
To: rv10-list(at)matronics.com
Date: Thursday, February 25, 2010, 4:05 PM
--> RV10-List message posted by: "greghale" <ghale5224(at)aol.com (ghale5224(at)aol.com)>
DON,
I have not been able to find the Goodyear FC3 tires. Where did you purchase them? Also is the MICHELIN AIRSTOP TUBE what you used available from Aircraft Spruce?
Greg...
--------
Greg Hale rv10 -- N210KH
www.nwacaptain.com
Read this topic online here:
http://forums.matronics.com/viewtopic.sp; --> http://foru - List Contribution We -Matt Dralle, List m/contribution" target=_blank>http://www.matronics.com/contribution
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[quote][b]
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_________________ Don A. McDonald
40636 |
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Kelly McMullen
Joined: 16 Apr 2008 Posts: 1188 Location: Sun Lakes AZ
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Posted: Fri Feb 26, 2010 4:59 am Post subject: vibration in mains on roll out |
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I wish I understood why using the heaviest tire out there reduces the
vibration problem. Not to argue with results, just don't grasp the
physics.
On Thu, Feb 25, 2010 at 10:30 PM, Don McDonald
<building_partner(at)yahoo.com> wrote:
Quote: |
Greg, sorry for the abbreviation.... Goodyear Flight Custom III's... make sure you get 15X6.00X6. It is so nice to not have the vibration
--- On Thu, 2/25/10, greghale <ghale5224(at)aol.com> wrote:
From: greghale <ghale5224(at)aol.com>
Subject: Re: vibration in mains on roll out
To: rv10-list(at)matronics.com
Date: Thursday, February 25, 2010, 4:05 PM
DON,
I have not been able to find the Goodyear FC3 tires. Where did you purchase them? Also is the MICHELIN AIRSTOP TUBE what you used available from Aircraft Spruce?
Greg...
--------
Greg Hale rv10 -- N210KH
www.nwacaptain.com
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_________________ Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD |
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rv10flyer
Joined: 25 Aug 2009 Posts: 364
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Posted: Fri Feb 26, 2010 5:26 am Post subject: Re: vibration in mains on roll out |
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It may change the natural resonant frequency of the gear leg. Does it help or change the speed at which the vibration occurs when your landing at or near gross wt? If so, maybe for the same reason. I am going to make a note in the plans about the braided lines/fcIII tires. Thanks guys.
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_________________ Wayne G. |
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rv10builder(at)verizon.ne Guest
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Posted: Fri Feb 26, 2010 7:14 am Post subject: vibration in mains on roll out |
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maybe its the roundness of the tire combined with balancing? tires are built
differently, I know from my motorcycle that there is a big difference from
the OEM stock tires I had and the touring tires I bought, the feel and
smoothness was noticeable, maybe same situation with the Goodyears.
just a thought
--------------------------------------------------
From: "Kelly McMullen" <apilot2(at)gmail.com>
Sent: Friday, February 26, 2010 4:56 AM
To: <rv10-list(at)matronics.com>
Subject: Re: Re: vibration in mains on roll out
Quote: |
I wish I understood why using the heaviest tire out there reduces the
vibration problem. Not to argue with results, just don't grasp the
physics.
On Thu, Feb 25, 2010 at 10:30 PM, Don McDonald
<building_partner(at)yahoo.com> wrote:
>
> Greg, sorry for the abbreviation.... Goodyear Flight Custom III's... make
> sure you get 15X6.00X6. It is so nice to not have the vibration
>
> --- On Thu, 2/25/10, greghale <ghale5224(at)aol.com> wrote:
>
> From: greghale <ghale5224(at)aol.com>
> Subject: Re: vibration in mains on roll out
> To: rv10-list(at)matronics.com
> Date: Thursday, February 25, 2010, 4:05 PM
>
>
>
> DON,
>
> I have not been able to find the Goodyear FC3 tires. Where did you
> purchase them? Also is the MICHELIN AIRSTOP TUBE what you used
> available from Aircraft Spruce?
>
> Greg...
>
> --------
> Greg Hale rv10 -- N210KH
> www.nwacaptain.com
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