|29th September 2012, 09:00||#76|
Join Date: Aug 2010
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Re: Turbo charged Street Gypsy - project of the month
You are right, the chassis dyno only measures the wheel bhp. However, our dyno has a coastdown mode which estimates the drag of the driveline. These losses are added to the wheel hp figures to arrive at the estimated crank bhp.
Typical losses we have found on Gypsies is around 25 bhp at 6400 rpm. tapering down to a couple of hp at near zero speeds.
Yes, you can push beyond that ! But better have good tyres or it is scary !
We have just completed the build of supercharged Gypsies - I am starting a separate thread for this project.