Prop Question...Cupped or Non-Cupped

[TPD211]

I'm getting ready to order a Michigan Wheel Aluminum prop for my deckboat. Current is a SS 14 X 13 turning 5k rpm's @ WOT. I'm going to get a 14 X 11 Aluminum.<br />Should I get the cupped or non-cupped blade?<br />My current prop is cupped. Whats the difference?<br /><br />Thanks

 

[cuzner]

Re: Prop Question...Cupped or Non-Cupped

I'm no prop expert,but won't an 11 pitch prop let over-rev alot?<br /><br /> Jim

 

[Dunaruna]

Re: Prop Question...Cupped or Non-Cupped

Triggerr, the way I understand it (i'd be happy to be corrected by a prop expert) cupping helps to reduce ventilation, give better 'bite'.<br /><br /> On my boat I had a noticable difference when I got my prop cupped.<br /><br />I think it was rodbolt that said it is easier to understand women than props.<br /><br />Good luck.<br /><br />Aldo

 

[Dunaruna]

Re: Prop Question...Cupped or Non-Cupped

Just found this:<br /><br /> Boat props <br /><br /><br />Aldo

 

[tee-boy]

Re: Prop Question...Cupped or Non-Cupped

I read that cupping will allow you to run your o/b higher in the water column. This is due to the cupping gripping in while running in the unclean water. Probably helps a lot with jack plates on boats w/o a tunnel hull. It also helps to bite in on the turns.