08-06-2012, 02:01 PM #1
Question for the experts: I did some prop testing turbo and supercharged bikes
Tested two different skis 2012rxp hull with 06 supercharged motor and 2011 RS-260 TURBO with old style shoe and pump. The 2012 had a 14/18 with a 84mm venturi turning 8500rpms 70.3mph gps @ 15psi big charger.
The turbo on the otherhand had a 15/25 with a 81mm ring turning 8450rpms 78.5mph @ 21psi GT30/76. both had 3 blade props
Does those figures sound normal?
08-06-2012, 02:05 PM #2
Something is off. Both those skis should be easily over 80MPH
08-06-2012, 04:23 PM #3
On the 260turbo I also tried a 4 blade 15/22r and it was all over the limiter which was set to 8600rpm (Autronic ECU) and could only manage to go 72mph!!!
08-06-2012, 04:44 PM #4
08-06-2012, 06:15 PM #5
speeds sound too slow for sure...what are you injecting before the turbo?
08-06-2012, 06:27 PM #6
you need to bump the limiter up to 9,200, to run the 15/22 4 blade. May try turning down the boost then.
08-07-2012, 07:59 AM #7
08-07-2012, 08:10 AM #8
it would also defeat the purpose of having all that work done to the race ski which I tuned to 30psi only to run 21psi
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)