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BrianG · 02.11.2006, 04:23 AM

Thanks!

Yeah, that's what I mean, there is no consistency in values between brands. BrandX offers an unloaded RPM so you'd have to take that into consideration, while BrandY already specifies loaded RPM (but exactly how much load??). What's a newbie to do? You've got all this jargon that you're trying to make sense of, and just when you think you have it nailed down, some other variable comes into the equation. Argg. Personally, just give me all the parameters (in a consistent format) and let me do the calculating!

As far as the ballooning figure goes, leave it at zero and it won't even be figured into the calculation. Although, as long as all 4 tires are ballooning the same (which they should be), there isn't any stress on the drive train. You are right; any difference in tire diameter between the front and rear would cause issues.

Even if the calculator's output speed isn't totally accurate, at least it will give you an idea of the relative differences between two spur/pinion and/or tranny gear ratios.

	(#15)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	02.11.2006, 04:23 AM Thanks! Yeah, that's what I mean, there is no consistency in values between brands. BrandX offers an unloaded RPM so you'd have to take that into consideration, while BrandY already specifies loaded RPM (but exactly how much load??). What's a newbie to do? You've got all this jargon that you're trying to make sense of, and just when you think you have it nailed down, some other variable comes into the equation. Argg. Personally, just give me all the parameters (in a consistent format) and let me do the calculating! As far as the ballooning figure goes, leave it at zero and it won't even be figured into the calculation. Although, as long as all 4 tires are ballooning the same (which they should be), there isn't any stress on the drive train. You are right; any difference in tire diameter between the front and rear would cause issues. Even if the calculator's output speed isn't totally accurate, at least it will give you an idea of the relative differences between two spur/pinion and/or tranny gear ratios.