Another prop question
Posted: Wed Oct 24, 2012 1:48 pm
I have been following the prop/performance threads and have began to wonder if Time Warp is propped correctly. Seems from what I've read about bigger boats with smaller engines that maybe I should have better cruise performance at lower RPM. Here's the specs:
* Engines: 2000 TB merc 350's. port dyno'ed at 325, starboard dyno'ed at 330.
*Props = 15X17 RH and LH, 1 inch bore.
*400hrs on port motor, 20 on starboard motor.
*Hurth direct drive transmissions, not sure about the ratio, think 1:1.5 .....will try to get that info Friday.
* Fresh water boat with clean bottom.
* 3200rpm=17-18knots
* 2000rpm=8 knots
*not sure of WOT with new motor but old motor was around 30knot WOT approx 4800-5000rpm.
So what do you think about my numbers??? Thanks...........John
* Engines: 2000 TB merc 350's. port dyno'ed at 325, starboard dyno'ed at 330.
*Props = 15X17 RH and LH, 1 inch bore.
*400hrs on port motor, 20 on starboard motor.
*Hurth direct drive transmissions, not sure about the ratio, think 1:1.5 .....will try to get that info Friday.
* Fresh water boat with clean bottom.
* 3200rpm=17-18knots
* 2000rpm=8 knots
*not sure of WOT with new motor but old motor was around 30knot WOT approx 4800-5000rpm.
So what do you think about my numbers??? Thanks...........John