Sunday, June 26, 2016

Biodiesel Sportster Land Speed Racer - Ohio Mile 2016 First Pass (Video Post)

Here is a video of the first pass! The Comet Series 40 CVT did not shift fully, so unfortunately the fastest speed I could manage was 67mph. This was still enough to set the record, but I have a lot of tuning and improvements to do for next year.

We examined the CVT, and determined that the centrifugal weights in the primary are not heavy enough. This transmission is set up for a gasoline engine with a redline around 5000-6000 rpm. On a diesel engine that peaks at 3600 rpm, there simply isn't enough centrifugal force to make the current weights shift all the way. I will be experimenting with custom weights, and will post my results here.






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