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john_graham
Joined: 09 Aug 2007
Posts: 45
Location: Algonquin, IL
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 Posted: Tue May 27, 2008 5:16 am Post subject: Yak-List Digest: 4 Msgs - 05/26/08 |
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Good morning,
Is it possible to balance the main gear tires on a Yak-52? I have flat spots developing and I think it is due to the tire always landing on the same spot
John Graham
Sent from my Verizon Wireless BlackBerry
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_________________
John Graham
N15YK 1993 Yak-52
CubFlyer1940@Yahoo.com
(847) 641-1330 |
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dsavarese(at)elmore.rr.co
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| Posted: Tue May 27, 2008 6:01 am Post subject: Yak-List Digest: 4 Msgs - 05/26/08 |
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John,
Now that's a good one ----- "landing on the same spot".  Actually it
most likely is due to braking. On the 52 at high taxi speeds, like when you
apply brakes right after touching down and during rollout, it is easy to
skid the tires which in turn causes flat spots. If you squeeze the brake
handle at the same pressure as you squeeze it while taxiing, the brakes will
grab pretty quickly and skid the tires or one of the tires depending on the
position of the rudder pedals.
Don't take my word for it though. Next time you're taxing and squeeze the
brake handle, make a mental note of how hard you're squeezing the brake
handle. Then when you land, right after all three wheels are on the ground,
squeeze the brake handle with approximately the same pressure you used
during taxiing. See if you don't get a tire "chirp" or two.
As for balancing, that's a somewhat difficult task John. The difficulty is
in keeping the weights on the rim. I've actually used automobile wheel
weights. Took the tire to my local and friendly tire store and asked them
if they would spin the tire up to see where and how much weight was needed.
The automobile wheel weights have stayed on the rim. Stick on weights
should not be used because if they spin off they become projectiles which
can damage the sheet metal on the underside of the wing if it comes off at
the right time.
Dennis
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jorgen.nielsen(at)mweb.co
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| Posted: Tue May 27, 2008 10:14 am Post subject: Yak-List Digest: 4 Msgs - 05/26/08 |
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You apparently get rubber weights (used on trucks) that can be stuck to the
inside of the tyre.
This is how I did the wheels on my jet - don't want bits of stick on weights
flying into engine!
So you put wheel on machine, check where weights should go, take it all
apart (presumably marking things), add weights and re-assemble.
I did not do it myself but had it explained to me.
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