Originally Posted by Andrew@ActiveAutowerke
So both of these are your dyno's? What vortech is this?
Yes Andrew. These tests are from my dyno. You cannot export data from one DD to another like you can export a DRF on a dynojet.
Now compare the compressor maps of both.
Then look at the above results again.
Then you will see they both marry up almost exactly.
To get the above results from a Rotrex takes a lot of work and a lot of attention to detail. The rest of the hardware has to be optimized and belt slip must be controlled. That.. is where it get's really tricky. The step up ratio of 7.5 on these blowers and the standard crank pulley size of just 120mm makes life very very difficult to avoid belt slip.