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Old 25 June 2008, 14:54   #1
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Prop for Searrider 4m

Just got me a SR4 (Deluxe version) recently, haven't had it in the water yet due to fixing small stuff/weather.
I put a Yamaha 40 two stroke on it.
I plan on having two people with 12gallons of gas and some fishing gear most of the time.
I'll be getting a tach here shortly and start messing with getting the pitch right.

I just want to see what pitch are people running on their SR4's with 40-50hp?
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Old 25 June 2008, 16:57   #2
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Without a console you should try a 15" pitch for best all round and 16" pitch for max. top end, but with less acceleration power.

With a console you should stick to 15" pitch.
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Old 25 June 2008, 17:50   #3
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Quote:
Originally Posted by reinier View Post
Without a console you should try a 15" pitch for best all round and 16" pitch for max. top end, but with less acceleration power.

With a console you should stick to 15" pitch.
Considering you don't know which model Yamaha 40 is on there you seem to be awfully quick to give advice.


Mine ran a 10 3/8x14" on a Mariner 50 and made 44mph (GPS was in MPH only) No wind, slack water. Centre console, 50 litres of fuel aboard. No rev reading as didn't have a tach fitted but it wasn't as quick onto the plane as I'd have liked with 3 people onboard.
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Old 25 June 2008, 18:00   #4
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[QUOTE=Nos4r2;254317] Considering you don't know which model Yamaha 40 is on there you seem to be awfully quick to give advice.

It's a 95 two stroke Yamaha 3 cylinder if that helps. 40TLRT model if I remember correctly.
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Old 25 June 2008, 19:44   #5
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Whats on there at the moment and do you know the gear ratio?
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Old 26 June 2008, 05:15   #6
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Yamaha 40hp 2-stroke 3 cilinder gear is 26/13 or in otherwords 2:1.

Sorry, I already assumed that it was a 3 cilinder...
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Old 26 June 2008, 13:56   #7
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Quote:
Originally Posted by Nos4r2 View Post
Whats on there at the moment and do you know the gear ratio?
Right now it has 11 pitch prop which is too small of a pitch for this setup.
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