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Old 03 October 2014, 17:46   #1
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SR4, prop size?

I have a question for SR4 owners or indeed anyone in the know.
What size prop would you expect to see on an SR4 with a 50 hp 2 stroke?
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Old 03 October 2014, 17:56   #2
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I have a Yam 3 pot 2 St 50hp on mine and Julie at Steel Developments suggest 11.3x13 aluminum prop which is spot on!
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Old 04 October 2014, 03:05   #3
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Mine , running a Merc 50 2 stroke (not bigfoot) was spot on with a 10 3/8 x 14" prop.
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Old 04 October 2014, 04:03   #4
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I have a 11 x15" on mine. But I have a 55 on mine

Plus it is only me 99% of the time. I think if it was going to be more than me or for towing stuff I would drop to a 14" or if I could find one a 13.5".

The motor came with a 13" and it was over revving with just me.
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Old 04 October 2014, 04:14   #5
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Mine has a 2003 Tohatsu 2st 50hp, running a 11.1 x 14" 3 blade. It works for me, however I also run a 13" as well.

The 13 is better for me if I have crew and/or a bit of rough stuff,

The 14 gives me a few more knts at WOT, and seems better when solo.
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Old 04 October 2014, 04:24   #6
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I have also a stainless 11.75" X 17 pitch prop which came my SR4 & the Yamie 50hp will only rev to 4100 rpm, top speed is down just a bit but the difference in get up and go is a large factor as with the smaller prop its a real pocket rocket
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Old 04 October 2014, 05:02   #7
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Thanks for the response.
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Old 04 October 2014, 06:13   #8
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don't know if they'll fit, but I've got a couple of props that I tried on my sr4 with honda 50, you're welcome to try them if you're any where near nth Wales or Merseyside
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Old 04 October 2014, 11:54   #9
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Props

Quote:
Originally Posted by Chris Caton View Post
don't know if they'll fit, but I've got a couple of props that I tried on my sr4 with honda 50, you're welcome to try them if you're any where near nth Wales or Merseyside
Thanks for that kind offer. Do you know what size they are?

I got 4 props with this boat due, I think, to the previous owners tendency to cruise in rock infested water or even in no water at all. The diameter size stamped on the props bear no relationship to the actual size. I'm guessing they have all been filed down over the years as the shape is wrong and they are all around 10.5" diameter. No wonder my revs are too high.

I am not near you but I'd buy one if it was the right size.
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Old 04 October 2014, 11:55   #10
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If it were the right size....just before the grammar police respond..lol
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