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  #1  
Old 08-25-2016, 08:06 AM
V111Pilot V111Pilot is offline
 
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Default Inside tire wear

I understand it might be a common issue of the mains to wear on the inside much quicker than the outside. Yes, I could turn the tires around at the mid-cycle of wear, but never remember to. Is it possible to change the camber?
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  #2  
Old 08-25-2016, 09:10 AM
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southtarnation southtarnation is offline
 
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I had uneven tire wear, took my legs off sent back to manufacture and had both straightened for 100 bucks. Only one was out of spec and needed re bent.

Here's the link? http://www.langair.com
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  #3  
Old 08-25-2016, 11:09 AM
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If they are wearing more on the inside it is not likely because of camber.
It is because the axles are not toed in enough. This causes the tire to track outboard. Pulling the leg outboard and wearing the inboard side of the tire.

This can be caused by slightly bent legs (as already mentioned) because as they bend outward and aft it induces a twist movement in the axle, in the toe out direction.
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Last edited by rvbuilder2002 : 08-25-2016 at 11:12 AM.
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Old 08-25-2016, 01:24 PM
V111Pilot V111Pilot is offline
 
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Follow on question: what's the best way to determine if it is the toe or the gear legs bent?

Thanks!
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  #5  
Old 08-26-2016, 10:54 AM
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rvbuilder2002 rvbuilder2002 is offline
 
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If a leg was bent quite a bit, you might be able to tell by sighting down the length of the leg from the upper end with it still installed.
To detect a slight bend you need to remove the leg and roll it on a flat table with the axle hanging off the edge.

Toe can be checked by jacking the airplane and positioning it level front to back. Remove all parts from the bottom of the gear legs. Place a long piece of steel or aluminum angle (confirmed straight) on the back side of the gear legs and measure the gap between the angle and the outboard end of the axle.
I think it should be about 1/16" but check the RV-4 plans to confirm.
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Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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Old 08-26-2016, 02:24 PM
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Can one heat up the axle to re-bend it or will that affect the strength or stiffness (heat treat)?
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Old 08-26-2016, 03:07 PM
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Quote:
Originally Posted by sblack View Post
Can one heat up the axle to re-bend it or will that affect the strength or stiffness (heat treat)?
Yes it would.

Bent legs can be straightened though. Langair, the company that manufactures them does it.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

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Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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