Help finding COM chart please
Help finding COM chart please
I once saw a nice chart on here that listed various wheelbases and their COM location vs DFW weight. Can't find it now. We're at 5.04 oz total weight with DFW weight of .65 oz on a 5 9/16" wheelbase. It's hard to measure the COM with the rear fenders. Thanks.
- Stan Pope
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Re: Help finding COM chart please
See Computing CM Location by Weighing the Car.davet wrote:I once saw a nice chart on here that listed various wheelbases and their COM location vs DFW weight. Can't find it now. We're at 5.04 oz total weight with DFW weight of .65 oz on a 5 9/16" wheelbase. It's hard to measure the COM with the rear fenders. Thanks.
From your data, it computes CM Loc = 0.72"
Your data:
Wheelbase: 5-9/16 = 5.5625
Total Weight: 5.04
Rear Wheel weight = 5.04 - 0.65 = 4.39
Stan
"If it's not for the boys, it's for the birds!"
"If it's not for the boys, it's for the birds!"
Re: Help finding COM chart please
A bit Off Topic but fun for scouts to do. Maximum Velocity's 5197 Balance Stand is a clever design. I've always been able to get the car to balance and stay after I let go. You can then easily measure between the center of the axle head and the top of the balance stand with your calipers or ruler. You should be very close.
- LightninBoy
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Re: Help finding COM chart please
Speedster wrote:A bit Off Topic but fun for scouts to do. Maximum Velocity's 5197 Balance Stand is a clever design. I've always been able to get the car to balance and stay after I let go. You can then easily measure between the center of the axle head and the top of the balance stand with your calipers or ruler. You should be very close.
Yep. Works even with fenders!
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Re: Help finding COM chart please
There's a free app called pinewood calculator that is good for this kind of help.
Re: Help finding COM chart please
Thanks guys.