prop size

[1bigdog1]

What prop size would you recomend for a 235 evinrude? I was thinking 13 1/4- 13 1/2, with 17 pitch.. What do you think? Is for a 19' V-hull.

 

[Forktail]

Re: prop size

It all depends on what rpm the 235 runs with your boat. IMO, unless the boat is extremely heavy, the 17 seems a little too small.<br /><br />I'd try (in order of preference): <br /><br />14 X 19 Stainless<br />14 1/2 X 19 aluminum<br />15 1/4 X 19 Stainless High Perf<br />14 1/2 X 18 aluminum 4-blade

 

[93bronco]

Re: prop size

dont you have a 15 spline prop shaft on that lower unit? those 13in props seem small for that motor. what is the size you have on there now??<br />forktail has the correct props listed based on 19-22' runabout with speeds from 36 to 49. this is from an omc accessory catalog.

 

[1bigdog1]

Re: prop size

Well I dont pick the boat up for another two weeks, so I dont know about the spline. As for 36-49??? Im looking at more like 60-65 on this boat. It is rated for a 160.. I agree probably needs a bigger prop, just wasnt sure how big and what pitch, also what are your thoughts on the variable pitch props?

 

[1bigdog1]

Re: prop size

Well I dont pick the boat up for another two weeks, so I dont know about the spline. As for 36-49??? Im looking at more like 60-65 on this boat. It is rated for a 160.. I agree probably needs a bigger prop, just wasnt sure how big and what pitch, also what are your thoughts on the variable pitch props?

 

[ob]

Re: prop size

Hey 1bigdog1,What brand and model boat are we talking about.235 rated for 160?

 

[1bigdog1]

Re: prop size

well not really sure, could send u a pic and maybe you could tell me

 

[ob]

Re: prop size

You picking it up here in Corpus?I'll come see it.

 

[1bigdog1]

Re: prop size

Nah, picking it up in Brownwood, then bringing it home to Beeville.

 

[1bigdog1]

Re: prop size

2K Boat what is forktail? i went to forktail.com and didnt find anythiong about props.

 

[ob]

Re: prop size

Don't mean to nitpick ,but that's a lot of motor for a rig topped with 160.Two drawbacks.<br />1-Wardens<br />2-Transom and boat posture.<br />I'm thinking this rig will handle higher pitches.Say,21-23"pitch.Main thing is to prop it for recommended WOT range for motor.Has this rig been in use since married with a 235?

 

[93bronco]

Re: prop size

forktail- member #6455 posted the various prop sizes, in second post.

 

[1bigdog1]

Re: prop size

Yes, thats the whole reason I went with the 235, thats the only thing thats ever been on it. Im the second owner and original owner put a 235 on new when purchased. The transom is good and solid but I went ahead and put some extra support in just to be sure.

 

[1bigdog1]

Re: prop size

oh ok 2K, will go back and look. Thanks

 

[ob]

Re: prop size

Here's a site that has a wide range of props that will give you an idea of what one will put you back. <br /><br /> props

 

[1bigdog1]

Re: prop size

Thanks, and have looked there already. I already know the cost just wanted some opinions on size. Also would still like to hear what people think of the variable pitch props.

 

[93bronco]

Re: prop size

im looking at an older omc accessory book but here is what is says to maybe give you an idea:<br />high performance-bowlifter-omc raker<br />60 to 72mph -- 14 1/2 X 26<br />65 to 80 -- 14 1/2 X 28<br /><br />------------------------------------------------<br />high performance- transom lifter- sstr <br />60+ -- 14 1/2 X 24<br />65+ -- 14 1/2 X 26<br />--------------------------------------------------<br />high performance-holeshot-omc shooter-progressive pitch<br />55 to 67 -- 13 1/4 X 25<br />60 to 72 -- 13 1/4 X 27<br />65+ - -- 13 1/4 X 29<br /> <br /><br />dont know if these are still available but was just trying to give you an idea

 

[ob]

Re: prop size

torque shift props

 

[Forktail]

Re: prop size

Big motor, little boat, high speed = large pitch<br /><br />26 pitch looks about right....if it will turn the rpm.<br /><br />[(engine rpm/gear ratio) X (prop pitch in inch/12 inch/ft) X (60 min/hr)] / 5280 ft/mile = theoretical speed in mph.<br /><br />There's virtually no way to get 60 mph out of a 22 pitch or less.