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Old 23 January 2014, 04:26   #1
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I am after some advice. What diameter and pitch prop will I need for an Avon SR4, 50hp 4 stroke, will be used mainly 1 up but occasionally with 2 people, 25l fuel under the console, another 25l in the bow + anchor and chain, I weight 15 stone

Which prop should I order with the engine ?

Chris
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Old 23 January 2014, 05:59   #2
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Chris - I'll look at mine when I get in about sixish .....not a million miles away on streaker - probably the same sort of weight with consoles / frame/ kit / petrol/ anchor etc .

I think a 13 pitch no ide aon diameter
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Old 23 January 2014, 07:37   #3
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It would help if you said what make of motor you're talking about and the gear ratio of the lower unit.
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Old 23 January 2014, 08:17   #4
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14P x 10 3/8.
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Old 23 January 2014, 10:32   #5
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Honda bf50
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Old 23 January 2014, 10:45   #6
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11x15HQ
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Old 23 January 2014, 12:18   #7
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Quote:
Originally Posted by Mollers View Post
14P x 10 3/8.
How many blades and made of which material?

I believe you have the exact setup I'm looking at (from your profile)

What sort of top end speed do you get one up and what is the holeshot like? What RPM does the engine reach at WOT?

Would you recommend the BF50 on a SR4?

Chris
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Old 23 January 2014, 13:23   #8
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Quote:
Originally Posted by chris.moody View Post
Would you recommend the BF50 on a SR4?
Yes
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Old 23 January 2014, 13:28   #9
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Honda 3 blade s/s. 30knots top end (a little more can be achieved, but bottom end would suffer). Hole shot and acceleration are superb. The s/s prop was significantly punchier than the previous alloy of the same pitch. Not tried any other engine options on an sr4, but very happy with the bf.
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Old 23 January 2014, 14:36   #10
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Hi ChrisYes I have 4.8 rib/Honda bf50 3 blade alloy prop.
Mollers has said it all really.
I generally have 2 up. Performance awesome 28 knots.
No regrets.
Mr Caton also has a BF50 with his SR4
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