Volvo F series Due props.
 

Does any one know the rpm difference between each F series Volvo duo props?

Russ

Re: Volvo F series Due props.
 

I was told 300 rpm..I just switched to a set of F7s from F5s

Re: Volvo F series Due props.
 

I have a set of F9s and F7s. The F7 are on the boat now. I'm turning 4,600 WOT. I would like to get to 5,000 rpm.

Russ

Re: Volvo F series Due props.
 

F6s should put you right there...how the hell did you end up with F9s?

Re: Volvo F series Due props.
 

wkd1- The guy I bought the boat from had them. I dont know what he was thinking myself. So are you saying around 200 rpm each number lower?

Russ

Re: Volvo F series Due props.
 

Sorry Russ...I missread your last post...If you are spinning 4600 F5s should put you at 4900 or so.What motor/and Boat are you running now?

Re: Volvo F series Due props.
 

I'm running a 89 25 Checkmate Convincor. It has a Volvo 502 (415hp) EFI engine with a Volvo drive. I'm running 67 plus on GPS at 4,600 rpm. I hope turning 5,000 rpm I can gain a few more miles per hour. I got to say even with the large F8's this boat pops right on plane. Even with the drive up and no tabs!

Russ

Re: Volvo F series Due props.
 

Russ- What drive and ratio are you running? Also- do you know the difference between E and F series props? I know they are designed for different drives, but do they have the same splines? I have a Fountain 27 with a volvo 290DP, and have machined a set of E4's to fit. Haven't tried them yet, but they have a lot more pitch than my C4's, which is what I am after. New motor makes about 630 HP, and I don't know what to expect from the props. Will do break-in with the C4's this weekend, then will switch to the E4's. Any experience or advise would be appreciated. Toolz

Re: Volvo F series Due props.
 

Toolz- Its a 168 gear ratio DP-S. I don't know anything about the props. Trying to learn myself.

Russ

Re: Volvo F series Due props.
 

I run a smaller boat with 330 hp and bounced off 5000/5100 @ 55mph........I am biulding a 502.Trying to get to 70 mph or close as possible.
Each prop size adds or removes approximately 300 rpms....depends on HP...I would go to a set of F5s.
Did you buy all these different sizes?You have a set of F8s?