[Land-speed] Chassis Dyno Operations

John Burk joyseydevil at comcast.net
Sat Jun 12 19:07:05 MDT 2010


I'd guess less wheel slip and smaller , less expensive energy absorption / 
conversion unit .



> More fun dumb questions from me.  Why do we use high gear during a chassis 
> dyno pull?  The dyno does not know what gear the car is in, does it?  Is 
> there a general limit on the acceleration rate of the rollers?  If high 
> gear (1:1 in the gear box) is better than a lower gear, then would 
> overdrive be better that the 1:1 gear?  Is there some final drive ratio 
> that is best? Or is top speed the consideration?   And why does shifting 
> during the pull matter?   Are there other considerations in how the pull 
> is accomplished? Isn't the desire to get tuning data for the enitre rpm 
> range? Or should it be for reliability at peak rpm?
>
> anyhoo, just fun stuff before breakfast...
>
> comments? thoughts? flames?
>
> mayf
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