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Old 11-28-2009, 05:17 AM   #1
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Default Corner Weights for 1/8th Scale

Can anyone tell me how the corner weights should be divided up. I measured mine today and got the following:

LR: 736gm LF: 531gm
RR: 635gm RF: 592gm

Seems a bit odd to have a 100gm (about 15%) difference between the rears doesn't it?
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Old 11-28-2009, 06:04 AM   #2
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Shoulda mentioned it's an MRX4R
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Old 11-28-2009, 08:24 AM   #3
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Old 11-28-2009, 11:43 AM   #4
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You have some crossweight in it (tweak), adjust your collars a bit to even it out.
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Old 11-28-2009, 12:08 PM   #5
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From my own experiences i learned that measuring corneringweights for an rc car doesn't work.

Every time i lift the car and place it back i get different readings from the scales. It's almost impossible to balance the car. And when you have the car close to a good balance and then check it with the normal tweak method or tweak board, it;s not even close to a balance.

And before you start tweaking a car by using scales you have to balance the chassis on a set of pins, and make sure you are using matched springs.
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Old 11-28-2009, 12:26 PM   #6
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I would disconnect my sway bars first, then tweak with shock collars, then tweak with sway bars on(one at a time). On my tweak board I can remove the rear shocks and set the chassis flat on the board while I first tweak the front of the car to make sure the chassis will be level. You can have the car balanced with the chassis at a angle.
This is just how I tweak my car.

Last edited by sheeley; 11-28-2009 at 02:10 PM.
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Old 11-28-2009, 12:53 PM   #7
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Quote:
Originally Posted by DS Motorsport View Post
From my own experiences i learned that measuring corneringweights for an rc car doesn't work.
It works perfectly, just takes some care and proper methods. See the post between for some details.
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Old 11-28-2009, 03:02 PM   #8
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Quote:
Originally Posted by wingracer View Post
It works perfectly, just takes some care and proper methods. See the post between for some details.
I know the proper methods, setting up racing cars is my job.

The problem is that i don't get results which i trust. If i put the car on the scales ten times in a row, 5 times i will get 30 gr on the LF and 5 times 50 gr on the RF. If i got an imbalance on the same side during every measurement but only the amount would fluctuate i would just take the average of the measurements but this isn't the case.
The only thing that i could think of is that my problem lies in the scales, i bought some cheap 9 dollar scales.
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Old 11-28-2009, 03:48 PM   #9
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That's probably it. I get some fluctuations but usually not more than just a few grams.

I too prefer the more traditional methods of tweak set-up for the most part but I really like to use scales for the initial set-up of a new car or after a major rebuild. There are some things it will tell you that nothing else will.
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