20' Pontoon with 75 hp

[cc350]

Re: 20' Pontoon with 75 hp

Waterglide.

 

[papasage]

Re: 20' Pontoon with 75 hp

i have a 20 ft. powered with a 40 hp tohatsue . it has a 4 blade 11 pitch prop dealer said that was right for the setup . does 15 to 16 mph . GPS. i have a 16 pitch 3 blade speed like a trolling motor slow.could have got out and out swam it easley .i onley have bench in back and 2 fishing seat up frunt.

 

[FishinInMizzou]

Re: 20' Pontoon with 75 hp

Lot of good info here - for anyone. On the waterglide, I attached a really interesting blog on how a couple of guys went through the process - Not sure I am as dedicated as these two guys are, but it was quite informative.



http://www.pdbmagazine.com/fusetalk/forum/messageview.cfm?catid=29&threadid=22868

Make sure you read what tunedude and limulus wrote - that is the meat of the thread.

Ken

 

[wypontoon]

Re: 20' Pontoon with 75 hp

So we have a OLD 1980 19' Harris FloteBote that has a 79' Chrysler 75hp motor on it. I'm looking for a replacement prop and will keep the one on it as a spare. The one on it is a 13x14 18 spline prop. I can't find an exact replacement one for it. I called Michigan Wheel and they don't have anything listed for it. I've searched the web and came across a 13x15. Will this pitch make much of a difference in the performance? I don't have a tach on the boat but last summer on the lake at WOT it would run 30-31mph(at least that's what the speedo said).

 

[steelespike]

Re: 20' Pontoon with 75 hp

Welcome,
Its better to create your own post But here goes.Unless there is something really special about your toon you will never see 30.more likely 18-21.
If it seems to work well with the 14 I would stick with the 14.You may be able to get the 15 repitched to 14.Now is the time to get it right.If you get a tach, Tinytach is reasonable and easy to install.Or perhaps you could borrow a shop tach.If you get your rpm at max speed you can figure better if your prop is right then select a replacement.A 4 blade pontoon prop is best though your not likely to find one for your Chrysler.