WTB prather 220

[ww29]

WTB a prather 220 S&B and cupped as far as it can go.

 

[Bob Kensill]

Is this for an outboard?

 

[ww29]

yes.the topspeed 2 with o.s.outboard.

 

[shoboat]

William,

You do not need a lot of cup on the O.S. XM-OB it loads the motor too much and it will never

two stage on the muffler that way. I have plenty of the 220's in stock if you want to try one out.

It will need some backcutting on the trailing edge however.

Thanks,

Mark Sholund

 

[ww29]

shoboat i have one sharpened and balanced.gets it up but it not fast enough on straights in turns it goes good so i was thinking to get more speed cup it for the straight.

 

[shoboat]

William,

It needs to be backcut to let the motor rev. The blade profile is what is really important. You do not

want to overload the motor with too much cup, it doesn't work that way. :lol:

Thanks,

Mark Sholund

 

[ww29]

thanks shoboat.i still trying t ounderstand props on boats.

 

[Gaztech]

Mark Sholund

Is right on target with his suggestion as I run his props on my OS.. Should hit the second stage to make some HP.. Gaz

 

[moparbarn]

willaim, i met you at the greenbriar race on sat. . we need to get together to try out props. i have a small pond very close to the house. just big enough for .21 tunnels (barely) and stays pretty calm. get in touch so we can go prop testing. i've been experimenting with prop mods (with james/oer's help), so i've got a few options to work with. let me know when you want to go.