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Old 09-23-2010, 07:36 PM   #1
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Default How to balance car with digital scales?

I have seen alot of people at our track use scales.

This is for using 4 digital pocket scales.

I understand the theory behind it when it comes to weight balance (in other words, positioning the lead so left/right are close).

My question: is this a more effective way to adjust tweak as opposed to say the Hudy tweak station or the old traditional way of lifting the wheels using a screw driver?

If for example the front left is 450g and the front right is 460g, can you use shock preload to adjust this?

Or have i got it mixed up, and these scales not designed to adjust tweak??
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Old 09-23-2010, 07:46 PM   #2
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also, do you really need 4 x digital scales, or can you do it with 2?
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Old 09-24-2010, 12:14 AM   #3
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frontleft + rearright = frontright + rearleft

and try to get close to
frontleft - frontright = rearleft - rearright
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Old 09-25-2010, 05:38 PM   #4
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Quote:
Originally Posted by Roelof View Post
frontleft + rearright = frontright + rearleft

and try to get close to
frontleft - frontright = rearleft - rearright
Show him the pics Roelof.
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Old 09-25-2010, 07:56 PM   #5
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Quote:
Originally Posted by Roelof View Post
frontleft + rearright = frontright + rearleft

and try to get close to
frontleft - frontright = rearleft - rearright
so do you use shock preload to even out the weight on each wheel???
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Old 09-26-2010, 03:51 AM   #6
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When the car is placed on setup blocks you can even adjust the anti rollbar when using setup wheels

Front:


After adjustment:


Rear:


After adjustment:


Because you have a number with even on 1/10th of a gramm you want to get them equal, forget it. Just go close enough...

En indeed turning the preload rings on the dampers:
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Old 09-26-2010, 05:03 PM   #7
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Roelof, thank you for your explanation, but still a little confused....

do you use 4 scales or two scales?

is it the same as tweaking using the old screw driver lifting wheels method?

so if right front is 40grams heavier, do i loosen shock pre-load on this and increase pre-load same amount on rear left?

if yes, would this then not create uneven balance on rear end?
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Old 09-26-2010, 05:09 PM   #8
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what are the rear wheels resting on??

do downstops not interfere??
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Old 09-26-2010, 05:34 PM   #9
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Quote:
Originally Posted by implusepro View Post
Roelof, thank you for your explanation, but still a little confused....

do you use 4 scales or two scales?

is it the same as tweaking using the old screw driver lifting wheels method?

so if right front is 40grams heavier, do i loosen shock pre-load on this and increase pre-load same amount on rear left?

if yes, would this then not create uneven balance on rear end?
yes you can use two scales if the front wheels are of an equal height, the front tweaks the back.

i personally believe two is more accurate. i don't really care about weight distribution front to rear except when placing electronics in electric cars but that doesn't really apply here because none of us have much of a choice in servo placement.
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Old 09-27-2010, 12:19 AM   #10
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look here:
http://www.rctech.net/forum/nitro-ro...ab-c01-30.html
post no. 447 and on the next page no.453. There is a very good explanation.
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Old 09-27-2010, 12:45 AM   #11
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Quote:
Originally Posted by implusepro View Post


what are the rear wheels resting on??

do downstops not interfere??
These are setup wheels a friend did create for me. they are equal in size and weight, they are resting on weightscales giving the balance of the anti rollbar.
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