Thread: Questions About Prop Pitch
10-03-2013, 08:11 PM #1
Questions About Prop Pitch
My prop now is a 11/19 and the stock one is a 10/18. My rpms are about 7200. Before I was getting 7400. So would I get more speed with less pitch or maybe I can tweak it? Also, I saw a diagram on tweaking props on here. Does anyone have that?
Last edited by Jec; 10-03-2013 at 08:18 PM. Reason: Stupidity
10-03-2013, 08:28 PM #2
You should get max mph with the higher rpms provided you stay off the limiter. I forget what the limiter is on the N/a Skis. 7600???
10-03-2013, 08:36 PM #3
I think 7650 So can I tweak my prop a little?
10-03-2013, 08:38 PM #4
yea I would get it to about 7400-7500 if your limiter is 7650
The colder it gets the more rpms you will have so thats why I say 7400-7500
10-03-2013, 08:40 PM #5
Ok idk I can get there with the 11/19 (anyone can protest that) but maybe I'll send in my old prop to get cleaned up
10-03-2013, 08:45 PM #6
I only have experience with supercharged skis but you can pitch the prop to what ever you want. However the root angle of the prop might be different.
Example is I can bend a 15/21 into a 14/19 but it wont be the same as a unbent 14/19 due to the root angle being different.
10-03-2013, 08:48 PM #7
Ok in regards to tweaking.... If you don't bend each blade perfectly, will the prop vibrate excessively? Also I saw a picture on pitching, does anyone have that?
10-03-2013, 08:52 PM #8
10-03-2013, 08:59 PM #9
So if I doo 2mm down, I will get 200 rpms back?
10-03-2013, 09:02 PM #10
close maybe do 1mm and try that see what you get. It might be different for you with a non supercharged ski.
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