View Full Version : rude prop
looking to re prop my 40 evinrude .... any ausfishers with any old props i could try. the rude currently wears a well worn 11 3/4 x 17 pitch. boat goes ok (40kph @ 4000rpm on a 4.75 1/2cab) but lacks grunt on the back of a swell. any advice on pitch would be welcome ( what do the pitch numbers actully mean?) anyone with a prop to try please PM me
many thanks
BigE
blaze
15-11-2006, 11:53 AM
take a prop with the size 11 3/4 x 17
11 3/4 is the diameter
17" is the pitch, the pitch is the distance one rev of the prop will move in one revalution. This does not allow for slippage, there will always be some slipage.
cheers
blaze
Homer_Jay
15-11-2006, 12:27 PM
whats your revs at WOT?
Gilli
15-11-2006, 12:34 PM
The pitch is how far the prop will turn in one revolution in a semi permeable membrane, like jelly. If you got a 17" pitch prop, then in 1 revolution it should dig in 17 inches.
Gilli
Spaniard_King
15-11-2006, 12:47 PM
I got 2 stainless props forsale in the forsale section one is a 15 pitch and the other is a 13 pitch... You might get a bargain ;)
http://www.ausfish.com.au/forum/YaBB.cgi?num=1161769942
Garry
dan099
15-11-2006, 08:07 PM
i have a prop (standard) 40 johnson 2003 model in the shed u can have it for $50.00 + postage if u want
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