Today's Message Index:
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1. 06:18 AM - Re: 4000nm Trip (ianxbrown)
2. 07:20 AM - Re: Landing Gear Shimmy on RV8a (ianxbrown)
3. 07:57 AM - Re: Re: Landing Gear Shimmy on RV8a (thomas sargent)
4. 08:42 AM - Re: Re: Landing Gear Shimmy on RV8a (Hopperdhh@aol.com)
5. 08:47 AM - Re: 4000nm Trip (RV7ASask)
Message 1
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David,
You and your wife would be welcome to overnight at our place on your journey.
We live in Bromont, QC, and the nicely paved runway is 5,000' long. Bromont is
about 70kms due East of Montreal. I'm rebuilding my flipped-over RV-9A presently.
It sounds like a dream trip.
Ian Brown
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=402062#402062
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Subject: | Re: Landing Gear Shimmy on RV8a |
I'm interested whether you fixed your shimmy or not. I'd suggested tight wheel
bearings. All other suggestions are really excluded by your case history. Got
worse without changing gear legs, tire pressures or without having flat spots,
etc.
The conical bearings have a capability of tightening up, or not turning freely.
Did this start after a re-lube of the bearings? The wheels really have to turn
freely. One other thought on the mains, brake pads binding?
I'm a believer in AntiSplat Aero's wheel bearing mod, and perhaps their balancing.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=402069#402069
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Subject: | Re: Landing Gear Shimmy on RV8a |
On my 6A, reducing the nose wheel tire pressure helped a lot.
--
Tom Sargent
Message 4
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Subject: | Re: Landing Gear Shimmy on RV8a |
Something definitely needs to be done to improve the nose wheel axle
arrangement on the RVs.
I made a spacer so that I could tighten the axle bolt without causing the
bearings to feel the added pressure. It takes a few tries to get it just
right, but when you do the wheel should turn as free as with ball bearings.
The spacer makes the system much more stable.
I made my spacer out of steel about 3/4 inch diameter. With the wheel off
the plane you can measure between the outsides of the aluminum adapter hubs
and then subtract their combined thickness for a first try at the spacer
length. Start a few thousandths of an inch too long and the wheel bearings
will be too loose. Face off a couple of thousandths and try again until
its just right -- just a little or no play.
There is nothing wrong with the AntiSplat ball bearing mod if you want to
spend the money. I'm poor!
Dan Hopper
RV-7A 766DH Flying since 2004 -- only nosed it over once!
That (and seeing the result of a couple of other accidents) made me a
believer in the anti-splat gear leg brace. Great invention! Be sure to watch
the videos on their web site.
In a message dated 6/5/2013 10:21:04 A.M. Eastern Daylight Time,
ixb@videotron.ca writes:
--> RV-List message posted by: "ianxbrown" <ixb@videotron.ca>
I'm interested whether you fixed your shimmy or not. I'd suggested tight
wheel bearings. All other suggestions are really excluded by your case
history. Got worse without changing gear legs, tire pressures or without
having flat spots, etc.
The conical bearings have a capability of tightening up, or not turning
freely. Did this start after a re-lube of the bearings? The wheels really
have to turn freely. One other thought on the mains, brake pads binding?
I'm a believer in AntiSplat Aero's wheel bearing mod, and perhaps their
balancing.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=402069#402069
Message 5
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To everyone who replied on and off line, thank you very much.
We have gleaned a great deal of of good info that we will apply.
It seems every trip requires a good excuse to get it started and ours is the Air
Cadet League of Canada are having their AGM in Prince Edward Island the end
of June. What a great excuse to see one of the most beautiful areas of Canada.
I will update the list as to how the trip unfolds.
Thanks again to all.
Warmest regards
David Lamb
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=402075#402075
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