06-02-2006, 05:42 PM #1
- Join Date
- Dec 2005
- Aberdeen, Maryland
Impeller experts .. i need some help!!!!
So first of all i'd like to understand the concept of repitching a 14/20 prop back to a 12/19 .. For rpms right ? And after the 14/20 is repitched wouldnt it actully be a smaller prop then a box stock 13/19 ? I have a stage 2 1300 r and the best rpms and speed i could get out of my 12/19 was 68.5/7100 !! So anyways i get with my friend who has a 14/21.5 stak laying around that is too much for the mods he has so i decide to swap him my 12/19 for his 14/21.5 .. The results !! His boat only turned 6800 rpms and my boat turned 7220@66 mph ... Now i thought for sure my rpms would go down !! Whats going on here can anyone help ?
06-02-2006, 06:13 PM #2
go check out this thread and see if it helps. Then maybe armed with that knowledge, you'll have even more questions and a better understanding of the root angle of the blades on the pump.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By jdbretz in forum 4-Tec PerformanceReplies: 4Last Post: 09-26-2009, 12:54 PM
By zerowake in forum 4-Tec PerformanceReplies: 7Last Post: 03-27-2009, 11:39 PM
By awague2 in forum 2-Stroke PerformanceReplies: 6Last Post: 06-02-2008, 04:20 PM
By zdowell in forum 2-Stroke PerformanceReplies: 4Last Post: 06-18-2007, 10:18 AM
By Jeff C in forum Sea Doo Open DiscussionReplies: 2Last Post: 11-16-2005, 04:03 PM