Thread: new prop + intake grate = slower
09-15-2007, 09:08 AM #1
new prop + intake grate = slower
put on my new pump, wear ring & prop now is doin 68-6900 rpm @ 52-55 mph. before it was doin 55-58 mhp @ 71-72 rpm.
i am have r&d grate and solas 12-20 ss prop.
09-15-2007, 09:34 AM #2
The R+D Grate almost always slows you down verses stock or a RIVA grate. On the flip side, if you ride in rough water you will stay hooked up alot better than with the stock or RIVA. I raced closed course and stay hooked up much better with the R&D verses the RIVA, but give up a couple of mph on top end. You may need to take a couple a MM's out of your trialing edge to get your prop dialed in.
09-15-2007, 11:08 AM #3
09-15-2007, 11:54 AM #4
too much pitch in the prop....
09-15-2007, 12:16 PM #5
- Join Date
- Oct 2005
increase HP (to increase RPM) + steeper pitched prop (to reduce RPM back to ideal operating RPM) = increase in speed
And I don't know about the GTX, but I know on the RXP the R&D grate slows you down at least 1mph on glass, but in the rough it is top notch. However, it should not cause your RPM to drop that much. Like I and two2corrupt said, the RPM loss is due to the prop being pitched too steep.
*Also....make sure your intake grate is flush with your rideplate. If it is hanging down you will lose speed.
09-15-2007, 01:13 PM #6
thats what solas said to use for stock applacation.
i thought 12-20 was kind of a tame pitch?
what is the stock pitch?
Last edited by FL03GTX; 09-15-2007 at 01:14 PM. Reason: .
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