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Tim Olson
Joined: 25 Jan 2007
Posts: 2882
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 Posted: Thu Feb 12, 2009 11:18 am Post subject: Matco RV-10 Nosewheel Axle replacement write-upMatco RV |
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You can't see how it can make a difference? I can't see how you
can't see that. You can set the preload independent of the
axle bolt, you can lock the spacers from spinning, the spacer
is thicker and has more contact area on the bearing, and so on.
The axle shouldn't spin at all, neither should the spacers.
Also, that fillet on the axle on the Matco axle isn't there
as a contour to match the bearing. I clarified it with them.
That's just a machining fillet to keep the strength of that
intersection there. They spoke directly with Timken that in
the case of those bearings you can push directly on the
rubber seal...and their spacer design covers more of that
seal than the original designs...giving it less problems
with the ripping of the seal, that I've seen. I think both
Scott and I had ripped rubber seals on our front wheel bearings.
Agreed, the set screw is a required item, but they do send
you a very good special style locknut to use just to prevent
that very problem.
Tim Olson - RV-10 N104CD - Flying
do not archive
Jesse Saint wrote:
[quote]
I am just in the process of doing the axle swap for a friend. His plane
previously had the aluminum axle spacers. I personally don't see how
the Matco axle will make any difference whatsoever (now it might make a
difference with the original axle length, which was shortened by about
1/16" to get a better preload on the bearings). One side of the Matco
axle has the contour of the bearing, but the other side does not. The
Matco axle does have a bolt that will keep the axle from spinning, but
the shortened axle with the aluminum spacers was spinning anyway. Also,
if the set screw were to come loose on the matco axle, the axle nut
would easily loosen and then the wheel would spin on the axle and not on
the bearings, which would be worse than the Van's axle with aluminum
spacers, just as Rene mentioned.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
On Feb 12, 2009, at 8:50 AM, Rene Felker wrote:
>
>
> I usually don't like to get in these discussions....we all make our
> own decisions. But, "design flaws" and "wrong wheel" are inaccurate
> descriptions. For people who are just observing this lists, you would
> think we all were having a major problem with our nose wheels. From
> what I know, other than some wear problems with the ordinal spacers,
> there have not been any adverse affects of the design. I used the
> thinker spacers and after one year of operation have not had a problem
> with the stock (vans) wheel. When I removed the wheel from the fork
> last week, I did note some evidence of wear with the larger spacer,
> but nothing I would be concerned about. I did go to the new axle, but
> that was really just me following the heard. I ordered the axle
> before I had taken the wheel off and if I would have waited I would
> not have replaced the axle. I think the Matco axle is a better
> design, but there are hundreds of places on the plane that could be
> designed differently (better???!
> ), but is that just part of the personal preference.
>
> Bottom line for me is:
> Vans wheel and axle (with thicker spacers) worked fine for me.
> Valve stem clears fork with cap on.
> Matco axle appears to be better design, but has more parts and
> possible failure modes.
>
> Rene' Felker
> RV-10 N423CF Flying
> 801-721-6080
> --
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msausen
Joined: 25 Oct 2007
Posts: 559
Location: Appleton, WI USA
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| Posted: Thu Feb 12, 2009 12:18 pm Post subject: Matco RV-10 Nosewheel Axle replacement write-upMatco RV |
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Hmm, that depends. Based on what someone had previously said, it may be less expensive to accept the Van's wheel and then swap it because of Van's discount's. Something to be compared either way.
Michael
--
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scottmschmidt(at)yahoo.co
Guest
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| Posted: Thu Feb 12, 2009 2:42 pm Post subject: Matco RV-10 Nosewheel Axle replacement write-upMatco RV |
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That is right Tim. I actually had a bad tear on the rubber seal of one bearing and excessive rubber wear on the other.
My issue apparently was not enough preload which I added on my next set.
My first set lasted to 250 hours and this set looked good even with the old system for another 200 hours and I don't expect any problems with the new Matco axle.
I only have about 25 hours on the new axle and everything has been fine. The balancing has eliminated the shaking. I'll pull the wheel pants off this weekend to check for anything unusual and will post if I find something. No news is good news.
Scott Schmidtscottmschmidt(at)yahoo.com
From: Tim Olson <Tim(at)MyRV10.com>
To: rv10-list(at)matronics.com
Sent: Thursday, February 12, 2009 12:16:39 PM
Subject: Re: Matco RV-10 Nosewheel Axle replacement write-upMatco RV-10 Nosewheel Axle replacement write-up
--> RV10-List message posted by: Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)>
You can't see how it can make a difference? I can't see how you
can't see that. You can set the preload independent of the
axle bolt, you can lock the spacers from spinning, the spacer
is thicker and has more contact area on the bearing, and so on.
The axle shouldn't spin at all, neither should the spacers.
Also, that fillet on the axle on the Matco axle isn't there
as a contour to match the bearing. I clarified it with them.
That's just a machining fillet to keep the strength of that
intersection there. They spoke directly with Timken that in
the case of those bearings you can push directly on the
rubber seal...and their spacer design covers more of that
seal than the original designs...giving it less problems
with the ripping of the seal, that I've seen. I think both
Scott and I had ripped rubber seals on our front wheel bearings.
Agreed, the set screw is a required item, but they do send
you a very good special style locknut to use just to prevent
that very problem.
Tim Olson - RV-10 N104CD - Flying
do not archive
Jesse Saint wrote:
[quote] --> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>
I am just in the process of doing the axle swap for a friend. His plane previously had the aluminum axle spacers. I personally don't see how the Matco axle will make any difference whatsoever (now it might make a difference with the original axle length, which was shortened by about 1/16" to get a better preload on the bearings). One side of the Matco axle has the contour of the bearing, but the other side does not. The Matco axle does have a bolt that will keep the axle from spinning, but the shortened axle with the aluminum spacers was spinning anyway. Also, if the set screw were to come loose on the matco axle, the axle nut would easily loosen and then the wheel would spin on the axle and not on the bearings, which would be worse than the Van's axle with aluminum spacers, just as Rene mentioned.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
Cell: 352-427-0285
Fax: 815-377-3694
On Feb 12, 2009, at 8:50 AM, Rene Felker wrote:
> --> RV10-List message posted by: "Rene Felker" <rene(at)felker.com (rene(at)felker.com)>
>
> I usually don't like to get in these discussions....we all make our own decisions. But, "design flaws" and "wrong wheel" are inaccurate descriptions. For people who are just observing this lists, you would think we all were having a major problem with our nose wheels. From what I know, other than some wear problems with the ordinal spacers, there have not been any adverse affects of the design. I used the thinker spacers and after one year of operation have not had a problem with the stock (vans) wheel. When I removed the wheel from the fork last week, I did note some evidence of wear with the larger spacer, but nothing I would be concerned about. I did go to the new axle, but that was really just me following the heard. I ordered the axle before I had taken the wheel off and if I would have waited I would not have replaced the axle. I think the Matco axle is a better design, but there are hundreds of places on the plane that could be designed differently (better???!
> ), but is that just part of the personal preference.
>
> Bottom line for me is:
> Vans wheel and axle (with thicker spacers) worked fine for me.
> Valve stem clears fork with cap on.
> Matco axle appears to be better design, but has more parts and possible failure modes.
>
> Rene' Felker
> RV-10 N423CF Flying
> 801-721-6080
> --
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jesse(at)saintaviation.co
Guest
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| Posted: Fri Feb 13, 2009 7:13 am Post subject: Matco RV-10 Nosewheel Axle replacement write-upMatco RV |
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I'll give you that. It is nice to be able to set the preload without
shortening the axle. It is also nice to have a little bigger bearing
surface on the face of the bearing. But, with all that said, I really
don't think Van's 2nd take at it is broken. The original steel
spacers were not adequate, which Van's at least partially acknowledged
with the new part, although I don't know if they have started
shortening the axle to provide the preload necessary to keep the
bearings from spinning on the axle. N256H had a shimmy in that area
because of that. But, since replacing them with the aluminum spacers,
there appears to be no more problem. I think most shimmy is coming
from the fork pivot being too loose and the need for spacers in the
upper shock mount for the gear leg.
do not archive
Jesse Saint
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