Question regarding 454/bravo 1 and prop
#1
Question regarding 454/bravo 1 and prop
Hi, I have an '88 wellcraft Nova 23XL. I never bothered actually checking the speed until last week. ( had it a year). It seems slow. WOT is 4600 RPM and 50mph. My little Glastron did 55. My mechanic told me WOT should hit near 6000 RPM therefore my prop is incorrect. I use a 23° stainless 3 blade prop ( can't remember the brand). The mechanic said try a 4 blade 24° prop. Is this the answer??
#7
I should have explained better, but thanks for all the replies. The mechanic wanted to know max rpm at wot. Only for 10 seconds. His theory was if its floored and it doesn't get up near 6000 I might have room for improvement with regards to prop choice.
#8
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VIP Member
Bottom paint will slow you down. Is speed on GPS or mechanical speedo? I would check tach and speedo for accuracy. Then what about trim as Phragle stated? Are you getting the bow out of the water at speed? Also your current 3 blade might be repitched or cut down in diameter or out of spec. Verify the basics first.
#9
My mechanic told me:
WOT should hit near 6000 RPM therefore my prop is incorrect.
WRONG-Look at the manual 4200-4800 rpm max
I use a 23° stainless 3 blade prop ( can't remember the brand). The mechanic said try a 4 blade 24° prop.
WRONG-His prop suggestion should yield you about 4200 rpm
Is this the answer??
NO You need to talk to a marine mechanic or fellow boaters with experience.
As far as speed, I am not familiar with the Nova's performance but 50ish for that vintage seems to be in the ballpark for your engine.
Good luck.
WOT should hit near 6000 RPM therefore my prop is incorrect.
WRONG-Look at the manual 4200-4800 rpm max
I use a 23° stainless 3 blade prop ( can't remember the brand). The mechanic said try a 4 blade 24° prop.
WRONG-His prop suggestion should yield you about 4200 rpm
Is this the answer??
NO You need to talk to a marine mechanic or fellow boaters with experience.
As far as speed, I am not familiar with the Nova's performance but 50ish for that vintage seems to be in the ballpark for your engine.
Good luck.