prop fpr my 51" weed eater boat

[scales10]

just like the title says, for 1/4" shaft, thanks

[Dangerous_Toys]

I have a Prop Shop 6717/3 that is S/B/P.

[monojeff]

What type of motor are you running?
The 6717/3 blade is a race prop not necasarily good for your build from what I have seen.

The prop will also depend on where you mount the strut with surface or sub.

The 275 or 280 are going to be your best bet.
I would have to look I might have an extra one I could finish working on for you for around $40.

[roadrashracing]

Joe at zipps has some props for a decent price that are ready to go:

http://zippkits.com/~zippkits/index.php?main_page=index&cPath=8&zenid=93bd54bfac12a8f0e040fe04b3d529f6

[Fluid]

Your boat is a shallow vee and pretty heavy. What motor do you have and what are your speed expectations? Since you are wondering how to water cool the head I assume it is not a commercial gas racing motor but rather a converted yard-tool powerhead (does it still have the clutch?). I have no modern experience with those motors but I believe that a non-racing prop like a stock Prather 270 or Octura x470 would be a good place to start. Too much prop and that motor will overheat, especially if you intend to enclose it under a deck and hatch. Better to leave a couple mph on the table and have a reliable setup especially since it is a sport boat. I am anxious to see the final project!



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[scales10]

yeah it aint gonna be a race boat, its gonna have a troy bilt 31cc weed eater motor in it and it has the clutch on it also, there are some good prices on the zip kits page too, is there a certain one that anyone would recommend that they think would be good? and its actually not that heavy for how big it is, well IMO, thanks guys

[monojeff]

Larger prop will be better for the motor as it has more torque and less rpms so will push better with a larger prop.
Check out the warehouse hobbies page they use to have a great 275 prop for around $15 just have to balance and sharpen it yourself.

I also remind searching the web as a lot of people have built boats with these motors.
Me bing one of those people a lot of info to be had with searching and reading.