Y80 20ssh props info

[ZUL8TR]

To get idea of where to start I would like to know what range of pitch and diameter props are presently being used on the Y80 in 20ssh for competition heat racing for short and long courses with standard 14/16 gears?

Thanks

[pat]

Are there any 20SS drivers out there to help this racer get started with his question?

[ZUL8TR]

20ssh props

Are there any 20SS drivers out there to help this racer get started with his question?

Thanks for the push. Go figure? I think I'm not asking for top secret prop stuff here.

[mercguy]

Thanks for the push. Go figure? I think I'm not asking for top secret prop stuff here.

try starting around 6 7/8 x 11 or so...........

[raw]

It depends on what pitch guage you measure on. Anywhere from 10 1/2 to almost 11 is what most of us are using and 6 5/8 to 6 7/8 in diam. Short course using lower pitch and long course using higher pitch.Diam is all over the map depending on blade shape and size of the hub.

[pat]

This is good advice. It does matter what pitch gauge is being used for sure. A 10.5 to 11.0 inch pitch is a starting number since it is the "progressive pitch" throughout the blade that determines a good prop from an average running prop. Trailing edge pitch, cupping, leading edge pitch, rake, balance and blade shape are all contributors to how well a prop runs.

[ZUL8TR]

20ssh props

Thanks for the info guys

[ZUL8TR]

Prop pitch

This is good advice. It does matter what pitch gauge is being used for sure. A 10.5 to 11.0 inch pitch is a starting number since it is the "progressive pitch" throughout the blade that determines a good prop from an average running prop. Trailing edge pitch, cupping, leading edge pitch, rake, balance and blade shape are all contributors to how well a prop runs.

Since the pitch varies all over the blade face with each radius and location along that radius then when pitch is discussed where is it being measured?

Thanks

[Kev43V]

I am guessing here!
I suspect that dif. people measure it in dif places. I also suspect that some measure in 3 (or more) places and average those measurments.
there are a few good prop threads on BRF where these types of questions are discussed.
BTW good questions, I sure wish I knew the answers!!

[Tom10W]

Contact Craig Dewald

ZUL8TR,

The best advice I or most anyone on this website can give you is to contact Craig Dewald (DewaldProp@aol.com). He makes most of the props for stock outboard racing and will save you a lot of time and money in the long run. It will be the best $$$ you can spend...after safety equipment that is. After he gets you a good prop you can tweek your rig from there.

Good Luck, it's a great class to race.

Tom Kargus

[pav225]

ZUL8TR,

The best advice I or most anyone on this website can give you is to contact Craig Dewald (DewaldProp@aol.com). He makes most of the props for stock outboard racing and will save you a lot of time and money in the long run. It will be the best $$$ you can spend...after safety equipment that is. After he gets you a good prop you can tweek your rig from there.

Good Luck, it's a great class to race.

Tom Kargus

Tom's right...call Craig and he will set you up.
-Mike

[26V]

Ron Hill has some 6 7/8 X 12 props on ebay. seems a little steep for the Y80 but you can have them tweeked and drop some of the diamiter to free it up.
Just a thought

[B Walker]

Props are black magic. Try everything. You will find other people in your class will be quite willing to swap out with you as long as you have something decent to swap with.

Most people dont know props are matched to a boat. A prop that works great on a Hemp may be a dog on a Bezoat with the same exact motor and setup.

The difference between a "special" wheel and an average one is usually less than 1MPH. Sometimes the difference is in accelleration, not top end.

Good lap times win races, not necessarily straightaway speed.

See ya at the races

BW