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Old 12-27-2010, 06:23 AM   #1
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Default L-R balance

What do you guys prefer when checking this, Balance pins, scale boards, tweak stations? I currently just use balance pins but am considering other options.
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Old 12-27-2010, 06:40 AM   #2
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Balance pins are good for static weight only, they will not show chassis or suspension tweaks. Likewise scales are influenced by spring preload and other suspension issues.

So, what I do is use balance pins when building kits and placing electronics and extra weight. After that I ussually just block 1 end and lift the other off the bench at the center an ensure both wheels clear at the same time. I have used scales but it has been when the car is tweaked and I just can't find the problem any other way....and it has always been a chassis plate or brace tweaked.
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Old 12-27-2010, 09:07 AM   #3
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Quote:
Originally Posted by miller tyme View Post
Balance pins are good for static weight only, they will not show chassis or suspension tweaks. Likewise scales are influenced by spring preload and other suspension issues.

So, what I do is use balance pins when building kits and placing electronics and extra weight. After that I ussually just block 1 end and lift the other off the bench at the center an ensure both wheels clear at the same time. I have used scales but it has been when the car is tweaked and I just can't find the problem any other way....and it has always been a chassis plate or brace tweaked.
The sum of the FL/RL and FR/RR on the scales will stay constant so they are a reliable way of measuring weight distribution (same for the FL/FR and RL/RR sums) - but the pins or similar are very quick to use.

My TOP cars have holes in the shock towers to allow you to suspend the car from a piece or string (or in my case, two bent paperclips!)
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Old 12-27-2010, 10:00 AM   #4
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The sum of the FL/RL and FR/RR on the scales will stay constant so they are a reliable way of measuring weight distribution (same for the FL/FR and RL/RR sums) - but the pins or similar are very quick to use.

My TOP cars have holes in the shock towers to allow you to suspend the car from a piece or string (or in my case, two bent paperclips!)
I respectfully disagree. The sum may be a reflection of downforce applied to each wheel/side of car....but it is definetley influenced byspring preload and thus not good for balancing out electronics and extra weight, or a accurate when considering how weight transfer affects the car. Adjusting a shock collar WILL affect the opposite diagnal corner as well. It may work in oval where only 1 direction and radius turn are considered but for Road Course when the car must be consistent left or right and tight turns or sweepers the shocks must be even and thus can not be used to hide or offset other problems
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Old 12-27-2010, 10:06 AM   #5
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Use two scales or one scale and a post the same height as your scale platform. Measure on the CHASSIS. It's the only way to eleminate spring tension variables.

That's why balance balls or suspension strings through shock tower holes will show a different bias than the 2 or 4 scale method when measured on the wheels.
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