How fast will it go?

First I've heard of them. The hub looks too big for my application (may catch alot of weeds), plus that composite wouldn't last too long for me when I get in oyster shells or sand. Good concept though, but it looks like it belongs on outboard raceboats.

The Tiger props that you are talking about are surface props and are designed to run half in half out of the water. We run em on the surface units. No good for a submerged deal, and forget about having reverse. Throws a rooster tail about 5 feet high. All commercial surface drive units do not come with reverse, except for the manufacturer of tiger props. They are talking about abandoning the reverse because it does not work. This was already known by the other 3 manufacturers. Check out mudmotor videos on youtube and see the difference of the 4 main manufacturers.

We've found that a good mud surface prop with good reverse capabalities is a regular SS mud prop whith extra heavy cup. Those prop guys work the prop to a sharp balde and cup it to death.

 

10 x 10 @4000 RPM, 65HP, 34 mph. Otherwise, exactly the same as mudman @ 5000 RPM.
I would follow mudman's advice, He's been there. Also it's almost exactly what my software shows.

 

Thanks Guys!
Jango was that last thread for 2000lbs?

 

I'd expect 10X10 to be about right for 4000 rpm. Personally, I run that thing at 5500 max. Probably never bring it there, but I'd prop it for that. Otherwise, the engine will stop at 4000 rpm and you'll still have 1/4 throttle left. Been there, done that.

Are you running a surface prop? I'm interested in how this will be set up.

 

YES, my last numbers are for 2000 lb

 

These are surface drives
http://www.youtube.com/watch?v=hPex...59048AA5&playnext=1&playnext_from=PL&index=16

These are longtails, like I suspect you are building.
http://www.youtube.com/watch?v=qimjHKRU7Ns&feature=PlayList&p=CB879CE459048AA5&index=13

Two totally different props. Both get the job done, but some prefer one over the other. 3/4" shaft is too small either way. The surface video is what we run through, is this what you are trying do also?

 

Mudman,

I appreciate your help. We have not finalized the exact way we want to go with. But to give you some background, we are looking at 2 different systems. One is a direct drive off a shaft and we will use a pulley system that is able to go into reverse. The other is a hyd system that will be eaiser to build, but is less effcient. Much advantages to this as I am not that interested in fuel effcientcy as power and mobility. Both systems will have a power trim system that we have designed. What prop manufactures do you recommend for props Mudman?

Mark