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-   -   Uneven braking (https://www.rcuniverse.com/forum/rc-jets-120/9229996-uneven-braking.html)

Mavox 11-05-2009 10:36 AM

Uneven braking
 
I have a problem with uneven braking on a new jet. One wheel locks up way before the other does. I have tried reducing pressure, but it has to be ridiculously low to avoid wheel lock. I have already ruined two tires.

I appreciate any ideas what to do about it.

ThomasP 11-05-2009 10:48 AM

RE: Uneven braking
 
If it is of the type of brake that uses an expanding O'ring, then you can use an O'ring lubricant, B.V.M. can sell you one.

This usually improves things and and helps to prevent the wheels locking under braking.

Ensure the brake lines to both wheels are the same length

grbaker 11-05-2009 12:21 PM

RE: Uneven braking
 
Like Thomas said, you need to lube the o-rings in the brakes, but go to a store that sells pool supplies and buy a small tube or bottle of silicone o-ring lube.

If you lube the o-rings and still have a problem (and everything else in the system is OK), you can try placing an airline restrictor in the airline to both brakes (1 on each side). I usually place the restrictors just a couple of inches from the brake hub. This slows the activation of the brakes but does still allow full air pressure to them.


ravill 11-05-2009 12:53 PM

RE: Uneven braking
 


ORIGINAL: grbaker

Like Thomas said, you need to lube the o-rings in the brakes, but go to a store that sells pool supplies and buy a small tube or bottle of silicone o-ring lube.

If you lube the o-rings and still have a problem (and everything else in the system is OK), you can try placing an airline restrictor in the airline to both brakes (1 on each side). I usually place the restrictors just a couple of inches from the brake hub. This slows the activation of the brakes but does still allow full air pressure to them.


I was going to suggest these two as well.

Also, how about 1. a proportional braking system as well (most electronic ones are) and 2. manually "pumping" the brakes to slow the jet down instead of just hitting the brakes and letting them stay on. A gyro will help keep the jet straight even with uneven braking.

Raf

DelGatoGrande 11-05-2009 01:09 PM

RE: Uneven braking
 
stearing gyro

even lenth of airline from brake valve to both brakes

same michanical setup in both brakes

lube as discribed above



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