12LikesNew Schumacher KF2
07-29-2016, 08:27 AM - Wikipost
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05-22-2015, 01:52 PM
#301
My car ready to race, is 1599 right now with the side rails off. I wanted to try small bore shocks, titanium turnbuckles, and CF chassis to cut some more weight.
05-30-2015, 07:24 AM
#305
05-30-2015, 04:29 PM
#309
Tech Addict
iTrader: (1)
You don't race your car with turnbuckles instead of shocks, why weigh it that way? Stop cheating the scales to get certain percentages and focus on how the changes you make effect handling. Yes preload effects scale readings, it's called weight transfer... one big reason for tuning your suspension and the whole reason to use scales.
05-30-2015, 04:52 PM
#310
You don't race your car with turnbuckles instead of shocks, why weigh it that way? Stop cheating the scales to get certain percentages and focus on how the changes you make effect handling. Yes preload effects scale readings, it's called weight transfer... one big reason for tuning your suspension and the whole reason to use scales.
05-31-2015, 03:54 AM
#312
Hmmm, I was actually agreeing with you but I guess you could read that either way.
05-31-2015, 07:35 AM
#313
The scale Photo
Let me just say this, that will explain the front to rear weight readings. The yellow buggy has a small servo and all stock front running gear. The white car, my car has a full size servo, aluminum steering rack, and front link mount. Also I have removed a lot of weight from the transmission and moved it back on the chassis as fare as I could. The battery is now in the center. Overall I feel the car is better on wet clay running slicks or treaded tires, at Critters. At Cruzzin I well the same. Now that I have the transmission/motor were I feel is best, I will work on my setup, as I have been running 1.8 rear springs and 4.0 fronts and all the other adjustments to cause less steering and more rear grip. Im sorry for not answering questions or posting photos on how to do what im doing with this car. I cant give away to much information, and would not even be talking about it if that photo did not get posted.
05-31-2015, 10:56 AM
#314
Why the secrecy?
06-01-2015, 09:31 PM
#315
Interesting. This is why I was very curious to see an actual measurement of this layout as eyeballing it does not always end up agreeing with the measured results, which in this case were counterintuitive (at least to me). But based on what Maizer is saying I do not think it was his intent for this design/experiment to be made public let alone scrutinized so I digress.
With regards to the comments about the method of measuring used my question to anyone is: What are you trying to measure? If you want to determine where the center of mass is on the car then the best way to do that is how Tony has been suggesting. Remove and/or account for all the unsprung mass and take the spring pre-load out of the equation by using struts to set the suspension level at ride height. Once you can see where the center of mass moves as you make changes then you can start answering questions about dynamic weight transfer and handling.
This is not to say that scaling a car on tires has no value. It is just not as accurate in determining the car's center of mass, which is the key element affecting the car's handling.
With regards to the comments about the method of measuring used my question to anyone is: What are you trying to measure? If you want to determine where the center of mass is on the car then the best way to do that is how Tony has been suggesting. Remove and/or account for all the unsprung mass and take the spring pre-load out of the equation by using struts to set the suspension level at ride height. Once you can see where the center of mass moves as you make changes then you can start answering questions about dynamic weight transfer and handling.
This is not to say that scaling a car on tires has no value. It is just not as accurate in determining the car's center of mass, which is the key element affecting the car's handling.
Last edited by motorcitymatt; 06-02-2015 at 05:58 AM.