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zackrv8
Joined: 14 Jan 2006
Posts: 133
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 Posted: Wed Oct 18, 2006 5:52 pm Post subject: Nose Gear Building Tip |
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I went to installed the nose gear today. In particular, the link collar assembly. Vans states, "The nose gear Elastomers will have to be compressed in order to install the bolt. Do this by either pushing down on the forward end on the aircraft (yeah... right!) and/or lifting up on the aft end."
YGTBSM! Can you imagine pivoting the fuselage on the nose gear by pulling up on the tail end? That's just plain stupid and unsafe! I tried pulling down on the front and hardly moved the thing.
Below is a pic of what I did. Works great and much safer! Hope this helps someone when they get to this stage of construction.
Zack
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RV8 #80125
RV10 # 40512 |
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gommone7(at)bellsouth.net
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| Posted: Wed Oct 18, 2006 6:18 pm Post subject: Nose Gear Building Tip |
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Hi Zack, I'm, not far away from that step,that is a good idea,did you check more or less how much tension you aplly at the engine mount,did you notice any distortion at the point where you pull,may be if I'm start with your your idea ,but install a small rope harness at each bolt point ,the pulling will be divide in the four most resistent points of the engine mount,any way that was good ,starting with your idea and three or four variations from others builders ,will be a new way for Van's to install thats donuts
Really this forum is like to have 300 Pentiums in a computer working at the same time ,very powerful.
Thanks for the idea.
Hugo
do not archive.
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LloydDR(at)wernerco.com
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| Posted: Wed Oct 18, 2006 6:48 pm Post subject: Nose Gear Building Tip |
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A good friend of mine passed on a great tip, and I will ask Tim to post
it on his site, with credit going to Rick Gray. I will take pictures
when I finally am able to do it. What he did was take two blocks of wood
and two 9" c-clamps, braced the wood on the strut and took a half turn
on each c-clamp until the rubber was compressed enough to get the collar
bolt through. Simple and a 1 man operation. I have heard of others
trying to balance on the engine, hanging weights etc, but the c-clamp
idea seems the easiest and least stressful way to do it. I have not
tried it yet, as my engine mount will come with the Egg package and
already have the engine and accessories installed for me..."GRIN"
Dan
40269 (N289DT)
--
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dav1111(at)cox.net
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| Posted: Thu Oct 19, 2006 12:36 am Post subject: Nose Gear Building Tip |
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Did you get the bolt through yet? I used your same system, like a lot of
others (posted before) but still couldn't get enough down pressure on the
elastomers until after I hung the engine and then still had to get two guys
to add their weight to each side of the engine mount to compress the
elastomers enough to pin the bolt through.
Russ Daves
N710RV
First Flight 7/28/06
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zackrv8
Joined: 14 Jan 2006
Posts: 133
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| Posted: Thu Oct 19, 2006 5:22 am Post subject: Re: Nose Gear Building Tip |
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Russ..
This way of compressing the Elastomers is a piece of cake. It really is. I didn't research it in the archives. I was in the shop assembling this thing and didn't like the way Van was recommending.
The bolt went through easily. No problem. I ractheted the come-a-long tight but wasn't extremely tight. I did it all by myself with no help at all. It works.
Zack
| dav1111(at)cox.net wrote: | Did you get the bolt through yet? I used your same system, like a lot of
others (posted before) but still couldn't get enough down pressure on the
elastomers until after I hung the engine and then still had to get two guys
to add their weight to each side of the engine mount to compress the
elastomers enough to pin the bolt through.
Russ Daves
N710RV
First Flight 7/28/06
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Thu Oct 19, 2006 5:29 am Post subject: Nose Gear Building Tip |
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Not sure what your concern about jacking up on the tail is, other than
you have to have enough wt forward of the main gear to get the leverage.
Mooneys use the same Lord discs, and if the nose gear angle needs
adjustment it is much easier to jack the tail than to get out
compression tool to hold the discs compressed while you remove the bolt
and insert a spacer.
zackrv8 wrote:
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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zackrv8
Joined: 14 Jan 2006
Posts: 133
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| Posted: Thu Oct 19, 2006 5:31 am Post subject: Re: Nose Gear Building Tip |
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Hugo,
You really don't need to modify this techique. As you can see from the photos, I tried to use max leverage. The strap is wrapped around the forward part of the nose gear. The strap wraps around the 2 top engine mounts. This gives max leverage.
As I started cranking down on the strap, I watched for any deformation of the mount or gear. NOTHING! Gus Funnel told me on the phone that the motor mount not only has to support the weight of the big six cylinder under normal conditions, but also has to do it with 6 g's on it! Nuf said.
Zack
quote="gommone7(at)bellsouth.net"]Hi Zack, I'm, not far away from that step,that is a good idea,did you check more or less how much tension you aplly at the engine mount,did you notice any distortion at the point where you pull,may be if I'm start with your your idea ,but install a small rope harness at each bolt point ,the pulling will be divide in the four most resistent points of the engine mount,any way that was good ,starting with your idea and three or four variations from others builders ,will be a new way for Van's to install thats donuts
Really this forum is like to have 300 Pentiums in a computer working at the same time ,very powerful.
Thanks for the idea.
Hugo
do not archive.
[/quote]
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zackrv8
Joined: 14 Jan 2006
Posts: 133
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| Posted: Thu Oct 19, 2006 5:37 am Post subject: Re: Nose Gear Building Tip |
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OK. You could probably jack the tail up, but not by yourself. After the mains start to leave the ground (and they will because you will not get enough compression), the fuselage becomes very unsteady and wants to roll. If you had more people to watch and steady the fuselage, go for it. It still takes alot of force to compress the elastomers. The full weight of the aircraft is not there yet, i.e., wings, tail, engine, etc...
Zack
| Kellym wrote: | Not sure what your concern about jacking up on the tail is, other than
you have to have enough wt forward of the main gear to get the leverage.
Mooneys use the same Lord discs, and if the nose gear angle needs
adjustment it is much easier to jack the tail than to get out
compression tool to hold the discs compressed while you remove the bolt
and insert a spacer.
zackrv8 wrote:
|
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rickgray(at)adelphia.net
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| Posted: Thu Oct 19, 2006 6:31 am Post subject: Nose Gear Building Tip |
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2 'C' clamps over the elastomers...one on the px side and one on the drivers side.
Put some tape over the powdercoat (like I did) and you won't even scratch it!
One person, and....you compress where it's meant to be compressed. Took 3 minutes and it was done.
BTW...this was without the engine hung.....piece of cake!
Rick in Ohio at the Buffalo Farm
http://rv6rick.tripod.com/ohiovalleyrvators/
| Quote: | OK. You could probably jack the tail up, but not by yourself. After the mains start to leave the ground (and they will because you will not get enough compression), the fuselage becomes very unsteady and wants to roll. If you had more people to watch and steady the fuselage, go for it. It still takes alot of force to compress the elastomers. The full weight of the aircraft is not there yet, i.e., wings, tail, engine, etc...
Zack
Kellym wrote:
> Not sure what your concern about jacking up on the tail is, other than
> you have to have enough wt forward of the main gear to get the leverage.
> Mooneys use the same Lord discs, and if the nose gear angle needs
> adjustment it is much easier to jack the tail than to get out
> compression tool to hold the discs compressed while you remove the bolt
> and insert a spacer.
> zackrv8 wrote:
>
> >
> >
> > I went to installed the nose gear today. In particular, the link collar assembly. Vans states, "The nose gear Elastomers will have to be compressed in order to install the bolt. Do this by either pushing down on the forward end on the aircraft (yeah... right!) and/or lifting up on the aft end."
> >
> > YGTBSM! Can you imagine pivoting the fuselage on the nose gear by pulling up on the tail end? That's just plain stupid and unsafe! I tried pulling down on the front and hardly moved the thing.
> >
> > Below is a pic of what I did. Works great and much safer! Hope this helps someone when they get to this stage of construction.
> >
> > Zack
> >
> > --------
> > RV8 #80125
> > RV10 # 40512
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=68847#68847
> >
> >
> >
> >
> > Attachments:
> >
> > http://forums.matronics.com//files/dsc06309_906.jpg
> > http://forums.matronics.com//files/dsc06311_898.jpg
> > http://forums.matronics.com//files/dsc06305_426.jpg
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
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RV8 #80125
RV10 # 40512
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=68914#68914
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