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Bill Strahan
Joined: 20 Aug 2008 Posts: 145
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Posted: Wed Mar 20, 2013 2:01 pm Post subject: Unorthodox Tire Balancing |
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One of my tires is severely out of balance. I have a Marc Parnes tire balancer, and it is SUPER sensitive, but this is so out of balance it will rotate on the wheels bearings!
So in attempting to balance it, I've determined it would take 2.5 ounces on the rim to bring it into balance it. The wheel is so small compared to the tire that it takes a lot of weight to fix an imbalance in the tire. (And yes, I've rotated the tire on the rim to make sure it's really the tire. It is. )
So I started thinking about how it would be so much easier to balance if I could get the weight further out on the tire instead of inside the rim. Then I saw that old inner tube laying there...
So my question is this: If I cut a flat section of old tube and laid it inside the tire, between the tube and tire, does anyone have an opinion on whether or not that's going to wear a flat spot on the tube?
I've felt the inside of the tire, and it's by no means smooth. It has grooves and imperfections that feel about the same thickness as the wall of the old tube, so it would seem to me that it would be fine. Opinions?
If it would work, I could balance it with a fraction of the weight, and I'd never worry about one of the weights being slung off the rim and going on a wheelpant eating spree.
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esn14gp(at)yahoo.com Guest
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Posted: Wed Mar 20, 2013 3:42 pm Post subject: Unorthodox Tire Balancing |
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Install a new tire/tube?
Might be easier and a better fix long-term.
Gordon
From: Bill Strahan <bill(at)gdsx.com>
To: lightning-list(at)matronics.com
Sent: Wednesday, March 20, 2013 6:01 PM
Subject: Unorthodox Tire Balancing
--> Lightning-List message posted by: "Bill Strahan" <bill(at)gdsx.com (bill(at)gdsx.com)>
One of my tires is severely out of balance. I have a Marc Parnes tire balancer, and it is SUPER sensitive, but this is so out of balance it will rotate on the wheels bearings!
So in attempting to balance it, I've determined it would take 2.5 ounces on the rim to bring it into balance it. The wheel is so small compared to the tire that it takes a lot of weight to fix an imbalance in the tire. (And yes, I've rotated the tire on the rim to make sure it's really the tire. It is. )
So I started thinking about how it would be so much easier to balance if I could get the weight further out on the tire instead of inside the rim. Then I saw that old inner tube laying there...
So my question is this: If I cut a flat section of old tube and laid it inside the tire, between the tube and tire, does anyone have an opinion on whether or not that's going to wear a flat spot on the tube?
I've felt the inside of the tire, and it's by no means smooth. It has grooves and imperfections that feel about the same thickness as the wall of the old tube, so it would seem to me that it would be fine. Opinions?
If it would work, I could balance it with a fraction of the weight, and I'd never worry about one of the weights being slung off the rim and going on a wheelpant eating spree.
Read this topic online here:
http://forums.matronics.co; &nb========================
[quote][b]
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N1BZRich(at)AOL.COM Guest
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Posted: Wed Mar 20, 2013 4:12 pm Post subject: Unorthodox Tire Balancing |
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Hi Bill,
I think you will be fine with the fix you have described. However, my question is what brand of tire is that far out of balance? And how many ply tire is it? Or is it maybe a recap? Of all the aircraft tires I've had over the past 35 years on six different airplanes I've never had one that far out of balance.
Blue Skies,
Buz
In a message dated 3/20/2013 6:02:04 P.M. Eastern Daylight Time, bill(at)gdsx.com writes:
Quote: | --> Lightning-List message posted by: "Bill Strahan" <bill(at)gdsx.com>
One of my tires is severely out of balance. I have a Marc Parnes tire balancer, and it is SUPER sensitive, but this is so out of balance it will rotate on the wheels bearings!
So in attempting to balance it, I've determined it would take 2.5 ounces on the rim to bring it into balance it. The wheel is so small compared to the tire that it takes a lot of weight to fix an imbalance in the tire. (And yes, I've rotated the tire on the rim to make sure it's really the tire. It is. )
So I started thinking about how it would be so much easier to balance if I could get the weight further out on the tire instead of inside the rim. Then I saw that old inner tube laying there...
So my question is this: If I cut a flat section of old tube and laid it inside the tire, between the tube and tire, does anyone have an opinion on whether or not that's going to wear a flat spot on the tube?
I've felt the inside of the tire, and it's by no means smooth. It has grooves and imperfections that feel about the same thickness as the wall of the old tube, so it would seem to me that it would be fine. Opinions?
If it would work, I could balance it with a fraction of the weight, and I'd never worry about one of the weights being slung off the rim and going on a wheelpant eating spree.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=396689#396689
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wb2ssj(at)rochester.rr.co Guest
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Posted: Wed Mar 20, 2013 4:29 pm Post subject: Unorthodox Tire Balancing |
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Bill, I would give it a try. If the tire is new, most places will replace it
no problem if you tell them its that far out of balance.
Tex
---
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Bill Strahan
Joined: 20 Aug 2008 Posts: 145
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Posted: Wed Mar 20, 2013 5:36 pm Post subject: Re: Unorthodox Tire Balancing |
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It's got about 35 hours on it. It required about 1.25 ounce when it was new. I don't recall landing with the brakes on!
There are no flat spots, and insignificant wear, but it isn't perfectly round either. When I just spin the wheel I can see perhaps 3/32" of out of roundness, but that doesn't correlate with the heavy side, so I don't think that's the problem? Brand? I don't even recall, but I'll look next time I'm in the hanger. I think it's a 6 ply tire.
I like the tires well balanced, which is why I own the balancer. Ditto for prop balance. Vibration in an airplane is a great thing to minimize.
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wb2ssj(at)rochester.rr.co Guest
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Posted: Thu Mar 21, 2013 2:13 am Post subject: Unorthodox Tire Balancing |
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Bill, buy a new tire. Its not worth failing a few hundred miles away from
home.
---
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Bill Strahan
Joined: 20 Aug 2008 Posts: 145
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Posted: Thu Mar 21, 2013 6:43 pm Post subject: Re: Unorthodox Tire Balancing |
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wb2ssj(at)rochester.rr.co wrote: | Bill, buy a new tire. Its not worth failing a few hundred miles away from
home.
--- |
Good advice, but the question still applies to any balance job. It's a pain to add weights to the tiny rims on these planes, and if the extra tube piece inside the tire won't cause problems it would either eliminate or greatly reduce the weights on the rim.
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davemcc
Joined: 28 Feb 2007 Posts: 74
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Posted: Thu Mar 21, 2013 7:54 pm Post subject: Unorthodox Tire Balancing |
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have u tried spin balancing these tires
[quote] ---
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Bill Strahan
Joined: 20 Aug 2008 Posts: 145
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Posted: Fri Mar 22, 2013 5:19 am Post subject: Re: Unorthodox Tire Balancing |
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[quote="davemcc"]have u tried spin balancing these tires
Not sure what you mean.
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davemcc
Joined: 28 Feb 2007 Posts: 74
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Posted: Fri Mar 22, 2013 12:34 pm Post subject: Unorthodox Tire Balancing |
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Bill
Just a little history, I have nearly 1,000 hrs on my Esqual and have tried
everything to get rid of shimmy, I was the first one ever to use the "broom
handle" on the struts.
About two years ago I was talking to a friend who is a truck mech. He said
he had a spin balancer at home that would balance these small tires--I have
been trying to find someone for 8 years that could do this. Please
understand, I have used every type of balancer. When I got my tires back, it
was like heaven, shimmy is gone. I gave him a "franklin" for doing it cause
I was so happy with the results
Find someone with a spin balancer, you won't regret it
Dave
---
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Bill Strahan
Joined: 20 Aug 2008 Posts: 145
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Posted: Mon Mar 25, 2013 5:38 pm Post subject: Re: Unorthodox Tire Balancing |
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Here's what I'm now using to balance.
http://youtu.be/urAY_g2gmGM
How cool is that?
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n45bm(at)yahoo.com Guest
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Posted: Mon Mar 25, 2013 6:27 pm Post subject: Unorthodox Tire Balancing |
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Tower Hobbies (and others) sells a magnetic model airplane prop balancer - same principle. Could be up-sized to balance our big Lightning props too. Why not? All you need is bigger magnets,
Bernardo
--- On Mon, 3/25/13, Bill Strahan <bill(at)gdsx.com> wrote:
[quote][b]
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n5pb(at)AOL.COM Guest
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Posted: Tue Mar 26, 2013 9:49 am Post subject: Unorthodox Tire Balancing |
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Bill,
That IS cool. how well does it work and what is the cost? Where did you get it?
Bear
--
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Bill Strahan
Joined: 20 Aug 2008 Posts: 145
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Posted: Tue Mar 26, 2013 6:25 pm Post subject: Re: Unorthodox Tire Balancing |
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Two points:
First, this idea came from an old R/C prop balancer I had. It was like the magnetic balancer, but was just a shaft, two tapered cones, and the shaft had pointed ends. You just held it very lightly between your fingers. When I saw the magnetic balancer, I adapted that $3 balancer to a magnetic version with some old hard drive magnets and a 2X4. Worked perfectly.
This version obviously requires much larger magnets. Same idea though. As to prop balancing, no need to bother with a static balance. I have a dnya-vibe and hook that up and run the wires through the heater butterfly box into the cabin so I can take readings at cruise speed and then balance for that specific RPM. When I get it just right, you can tell the increase in vibration on either side of 2850. At that specific RPM it's like glass.
I posted another video with some more detail if anyone wants to recreate my balancer setup. http://youtu.be/53mUcjocNUQ
If you're near DFW, drop by F69 if you want to borrow it.
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winky53(at)hotmail.com Guest
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Posted: Wed Mar 27, 2013 6:54 am Post subject: Unorthodox Tire Balancing |
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Lightning All, I have used ceramic beads to balance a tires. I was told about these the last time I put new tires on my motorcycle. I run a KUMO run flat care tire on the rear of my Honda Goldwing with 3 ounces of beads and 2 ounces of beads in the front and the ride is great. No matter what speed I am traveling the beads will move within the tire to balance it.
I decided to added 1 ounce of ceramic beads inside each tube on my rear Lightning tires and have found they run great. With the cost of tires I run retreads, and they balance perfect no matter what speed I appy to them. Ceramic beads are used on 18 wheelers and car tires for a long time. As a tire wears, the balance changes and with stick on weights or rim weights the lead never moves and tires will get out of balance after some mileage. The ceramic beads always are moving and can be reused. Just some other food for thought.
Gary
Lightning N428GW
Quote: | Subject: Re: Unorthodox Tire Balancing
From: bill(at)gdsx.com
Date: Tue, 26 Mar 2013 19:25:43 -0700
To: lightning-list(at)matronics.com
--> Lightning-List message posted by: "Bill Strahan" <bill(at)gdsx.com>
Two points:
First, this idea came from an old R/C prop balancer I had. It was like the magnetic balancer, but was just a shaft, two tapered cones, and the shaft had pointed ends. You just held it very lightly between your fingers. When I saw the magnetic balancer, I adapted that $3 balancer to a magnetic version with some old hard drive magnets and a 2X4. Worked perfectly.
This version obviously requires much larger magnets. Same idea though. As to prop balancing, no need to bother with a static balance. I have a dnya-vibe and hook that up and run the wires through the heater butterfly box into the cabin so I can take readings at cruise speed and then balance for that specific RPM. When I get it just right, you can tell the increase in vibration on either side of 2850. At that specific RPM it's like glass.
I posted another video with some more detail if anyone wants to recreate my balancer setup. http://youtu.be/53mUcjocNUQ
If you're near DFW, drop by F69 if you want to borrow it.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=397150#397150
>
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n45bm(at)yahoo.com Guest
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Posted: Wed Mar 27, 2013 7:58 am Post subject: Unorthodox Tire Balancing |
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Gary,
Another excellent idea. A friend with an RV-6 showed me his "dynamic" balancer on his prop. Same principle, works great! Don't know what the medium size was inside his prop balancer, but they sure work. It's true there's more than one way to skin a cat. Thanks.
Regards,
Bernardo Melendez, kit #110
--- On Wed, 3/27/13, gary winkler <winky53(at)hotmail.com> wrote:
Quote: |
From: gary winkler <winky53(at)hotmail.com>
Subject: RE: Re: Unorthodox Tire Balancing
To: lightning-list(at)matronics.com
Date: Wednesday, March 27, 2013, 9:53 AM
Lightning All, I have used ceramic beads to balance a tires. I was told about these the last time I put new tires on my motorcycle. I run a KUMO run flat care tire on the rear of my Honda Goldwing with 3 ounces of beads and 2 ounces of beads in the front and the ride is great. No matter what speed I am traveling the beads will move within the tire to balance it.
I decided to added 1 ounce of ceramic beads inside each tube on my rear Lightning tires and have found they run great. With the cost of tires I run retreads, and they balance perfect no matter what speed I apply to them. Ceramic beads are used on 18 wheelers and car tires for a long time. As a tire wears, the balance changes and with stick on weights or rim weights the lead never moves and tires will get out of balance after some mileage. The ceramic beads always are moving and can be reused. Just some other food for thought.
Gary
Lightning N428GW
Quote: | Subject: Re: Unorthodox Tire Balancing
From: bill(at)gdsx.com
Date: Tue, 26 Mar 2013 19:25:43 -0700
To: lightning-list(at)matronics.com
--> Lightning-List message posted by: "Bill Strahan" <bill(at)gdsx.com>
Two points:
First, this idea came from an old R/C prop balancer I had. It was like the magnetic balancer, but was just a shaft, two tapered cones, and the shaft had pointed ends. You just held it very lightly between your fingers. When I saw the magnetic balancer, I adapted that $3 balancer to a magnetic version with some old hard drive magnets and a 2X4. Worked perfectly.
This version obviously requires much larger magnets. Same idea though. As to prop balancing, no need to bother with a static balance. I have a dnya-vibe and hook that up and run the wires through the heater butterfly box into the cabin so I can take readings at cruise speed and then balance for that specific RPM. When I get it just right, you can tell the increase in vibration on either side of 2850. At that specific RPM it's like glass.
I posted another video with some more detail if anyone wants to recreate my balancer setup. http://youtu.be/53mUcjocNUQ
If you're near DFW, drop by F69 if you want to borrow it.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=397150#397150
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barnett6088(at)msn.com Guest
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Posted: Wed Mar 27, 2013 4:25 pm Post subject: Unorthodox Tire Balancing |
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Gary
Where do you buy the beads? I assume they are small enough to fit through the valve stem. Thanks for the idea. Gary B. gbsss(at)bendbroadband.com (gbsss(at)bendbroadband.com)
From: winky53(at)hotmail.com
To: lightning-list(at)matronics.com
Subject: RE: Re: Unorthodox Tire Balancing
Date: Wed, 27 Mar 2013 14:53:39 +0000
Lightning All, I have used ceramic beads to balance a tires. I was told about these the last time I put new tires on my motorcycle. I run a KUMO run flat care tire on the rear of my Honda Goldwing with 3 ounces of beads and 2 ounces of beads in the front and the ride is great. No matter what speed I am traveling the beads will move within the tire to balance it.
I decided to added 1 ounce of ceramic beads inside each tube on my rear Lightning tires and have found they run great. With the cost of tires I run retreads, and they balance perfect no matter what speed I appy to them. Ceramic beads are used on 18 wheelers and car tires for a long time. As a tire wears, the balance changes and with stick on weights or rim weights the lead never moves and tires will get out of balance after some mileage. The ceramic beads always are moving and can be reused. Just some other food for thought.
Gary
Lightning N428GW
Quote: | Subject: Re: Unorthodox Tire Balancing
From: bill(at)gdsx.com
Date: Tue, 26 Mar 2013 19:25:43 -0700
To: lightning-list(at)matronics.com
--> Lightning-List message posted by: "Bill Strahan" <bill(at)gdsx.com>
Two points:
First, this idea came from an old R/C prop balancer I had. It was like the magnetic balancer, but was just a shaft, two tapered cones, and the shaft had pointed ends. You just held it very lightly between your fingers. When I saw the magnetic balancer, I adapted that $3 balancer to a magnetic version with some old hard drive magnets and a 2X4. Worked perfectly.
This version obviously requires much larger magnets. Same idea though. As to prop balancing, no need to bother with a static balance. I have a dnya-vibe and hook that up and run the wires through the heater butterfly box into the cabin so I can take readings at cruise speed and then balance for that specific RPM. When I get it just right, you can tell the increase in vibration on either side of 2850. At that specific RPM it's like glass.
I posted another video with some more detail if anyone wants to recreate my balancer setup. http://youtu.be/53mUcjocNUQ
If you're near DFW, drop by F69 if you want to borrow it.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=397150#397150
|
[quote]
===========
st" target="_blank">http://www.matronics.com/Navigator?Lightning-List
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http://forums.matronics.com
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="_blank">http://www.matronics.com/contribution
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jim.kulbeth(at)insightbb. Guest
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Posted: Sun Mar 31, 2013 6:36 pm Post subject: Unorthodox Tire Balancing |
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I got some at a motorcycle shop. $20 per 2 wheels.
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of GARY BARNETT
Sent: Wednesday, March 27, 2013 8:26 PM
To: lightning-list(at)matronics.com
Subject: RE: Re: Unorthodox Tire Balancing
Gary
Where do you buy the beads? I assume they are small enough to fit through the valve stem. Thanks for the idea. Gary B. gbsss(at)bendbroadband.com (gbsss(at)bendbroadband.com)
From: winky53(at)hotmail.com (winky53(at)hotmail.com)
To: lightning-list(at)matronics.com (lightning-list(at)matronics.com)
Subject: RE: Re: Unorthodox Tire Balancing
Date: Wed, 27 Mar 2013 14:53:39 +0000
Lightning All, I have used ceramic beads to balance a tires. I was told about these the last time I put new tires on my motorcycle. I run a KUMO run flat care tire on the rear of my Honda Goldwing with 3 ounces of beads and 2 ounces of beads in the front and the ride is great. No matter what speed I am traveling the beads will move within the tire to balance it.
I decided to added 1 ounce of ceramic beads inside each tube on my rear Lightning tires and have found they run great. With the cost of tires I run retreads, and they balance perfect no matter what speed I appy to them. Ceramic beads are used on 18 wheelers and car tires for a long time. As a tire wears, the balance changes and with stick on weights or rim weights the lead never moves and tires will get out of balance after some mileage. The ceramic beads always are moving and can be reused. Just some other food for thought.
Gary
Lightning N428GW
Quote: | Subject: Re: Unorthodox Tire Balancing
From: bill(at)gdsx.com (bill(at)gdsx.com)
Date: Tue, 26 Mar 2013 19:25:43 -0700
To: lightning-list(at)matronics.com (lightning-list(at)matronics.com)
--> Lightning-List message posted by: "Bill Strahan" <bill(at)gdsx.com (bill(at)gdsx.com)>
Two points:
First, this idea came from an old R/C prop balancer I had. It was like the magnetic balancer, but was just a shaft, two tapered cones, and the shaft had pointed ends. You just held it very lightly between your fingers. When I saw the magnetic balancer, I adapted that $3 balancer to a magnetic version with some old hard drive magnets and a 2X4. Worked perfectly.
This version obviously requires much larger magnets. Same idea though. As to prop balancing, no need to bother with a static balance. I have a dnya-vibe and hook that up and run the wires through the heater butterfly box into the cabin so I can take readings at cruise speed and then balance for that specific RPM. When I get it just right, you can tell the increase in vibration on either side of 2850. At that specific RPM it's like glass.
I posted another video with some more detail if anyone wants to recreate my balancer setup. http://youtu.be/53mUcjocNUQ
If you're near DFW, drop by F69 if you want to borrow it.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=397150#397150
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davemcc
Joined: 28 Feb 2007 Posts: 74
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Posted: Sun Mar 31, 2013 7:45 pm Post subject: Unorthodox Tire Balancing |
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You say you know of trucks and motorcycles using these beads. I don't believe semis or bikes have used tires with tubes for around 30 years. Of course we all use these thin walled "tubes" in our aircraft. Being a safety type guy, if I were to install moving items in my tubes, I would do some homework.It would suck making a landing after air left my tube while in flight. My 2 --
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