dcb

2002 Cig. top gun twin step - prop recommendations ? Stock 32 bravos on rev limiter. 575 SCI 1.5 xr

bbladesprops

What speed do you see with the 32 stockers? How hard on the limiters?
What is your main goal?
Fuel economy, cruise speed, top end, etc.?

Brett

dcb

90 - 92, engines have intercoolers but otherwise stock, seems as though the props are too small - main goal good cruise - runs about 50 - 53 @ 3500. Fairly hard into rev limiter. Thanks for responding Brett.

bbladesprops

Believe it or not, Lab Finished 32 pitch Maximus propellers at 15.25" diameter.
Should take you to about 5100ish at WOT. Top speed shold remain but the cruise will jump 5+ mph. You will get on plane faster and stay on plane at a lower rpm as well.

Let me know if we can help.

Brett

dcb

Thanks Brett, I will call you to get prices.

Brent Medley

I recently had this same question that I posted in the Cigarette forum........what do you recommend for the best top end speed. My setup is the same as above but without intercoolers. Labbed 34's???

bbladesprops

Brent,
If you are looking for top speed instead of cruise speed as a main goal, yes I would go with 4 blade Bravo 1's Labbed to your specific needs.
This of course would be if 4 blades are staying hooked up well for you now.
Call me with any questions you might have.

Brett

Brent Medley

Thanks Brett........What Hering props are being ran with this specific application and are those running the Herings seeing significant top speed gains?

bbladesprops

Mostly 5 and 6 blades. The only gains achived on the top are when the slip% is high with 4 blades due to X dimention heights that are very aggressive.

It is a balancing act as to high X dimentions with multiple blades or lower X dimentions with less blades.

Brett