how to de-lift a prop

[drwayne]

How to remove lift from Octura X4 and X6 series. ?

Thx
W

[TristanJones]

wrong link... I'll try find the right one, it explains all you'll need to know to have a go at it.

[TristanJones]

try this...

http://www.rcraceboat.com/Propcuttingpage.html

hope it helps.

[wayne middlemiss]

cup the leading edge

[TheShaughnessy]

Back cutting should do the job. You can also try rounding the tips a lil and cupping too. It condenses the thrust cone so should help with lift

[capnswanny]

I'm pretty new at this, but I thought de-tounging was a biggie for removing lift, while also lowering torqe and increasing RPM.

Is it the back cut that is more critical to lift reduction??

[drwayne]

wrong link... I'll try find the right one, it explains all you'll need to know to have a go at it.

Ive spent the last 45 minutes searching through their blogs for part2 !!!!!
Grrr.

[Xzessperated]

Ive spent the last 45 minutes searching through their blogs for part2 !!!!!
Grrr.

Talk with Chuck.

[TristanJones]

use the search bar and type in prop school.
The other link (the right one) pretty much tells you what to do and where mate.

[drwayne]

use the search bar and type in prop school.
The other link (the right one) pretty much tells you what to do and where mate.

haha .
original link vanished

[TristanJones]

yeah I took it down.
Here...
try this,

http://www.mercuryracing.com/blog/?s=prop+school

[egneg]

cup the leading edge

Cup the last 3rd of the leading edges and round off the tips a bit.

[Fluid]

I have had the best luck doing what egneg suggests. The goal is to reduce the diameter of the 'end' of the thrust cone, producing a more narrow cone. With a surfacing prop, a wide thrust cone directs more water in a downward vector, lifting the transom. By reducing the cone's end diameter, more of the water is directed parallel to the pond surface and less downwards = less lift. Cupping the leading edge slightly will keep the water on the blade longer instead of slinging it off sooner. Keeping it on the blade narrows the thrust cone.

Some have had luck with "back cutting" the prop's trailing edge, but there are different ways to "back cut" - some of which do little for lift. Some methods will reduce overall thrust, which of course reduces the lift too.....



.

[drwayne]

Thanks for your assisting comments above... aids my understanding of prop work.

Have dremel and pliers at the ready ..

[egneg]

Pliers will do in a pinch at the pond, but cupping balls are the preferred method.

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