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Old 05 November 2009, 16:03   #161
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Well with 25hp extra, I should be able to make 52/3? Do you think it would benefit from a 4 blader?
No and nope to that one. As Chris says, you'll lose a bit of top end with a 4 blade prop and an extra 25hp isn't enough to gain an extra 2/3knots. Fiddling with props and jacking the engine might get you another knot or so, but you'll pay for it at the other end, pull-out/acceleration etc.
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Old 05 November 2009, 16:11   #162
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No and nope to that one. As Chris says, you'll lose a bit of top end with a 4 blade prop and an extra 25hp isn't enough to gain an extra 2/3knots. Fiddling with props and jacking the engine might get you another knot or so, but you'll pay for it at the other end, pull-out/acceleration etc.
Oh well shame but at the least I should be a knot faster than you?

I think that Roy is a condecerning ribber, so I'll trust his judgement and leave it as it is I think.
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Old 05 November 2009, 16:14   #163
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Oh well shame but at the least I should be a knot faster than you?
Yep, in flat water you would be faster than me.
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Old 05 November 2009, 16:16   #164
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Strange, when looking at the thread it says "try a 22" Viper" but when it comes up in the reply page when I quote it says 23"? I assume you mean 23 'cos its already got a 22! I imagine I'll leave it as it is though.
Yes I mistyped. I thought you could get a 23" Viper but you can't so ignore me, in fact you can't get a 23" Raker either

The Rebel Range that BRP produce is what you are after.

"Rebel TBX Size range from 15" to 25" pitch. This is a stainless steel 3 blade propeller that is designed and engineered to deliver improved midrange cruising speeds and top end speeds. Larger diameter and efficient blade contour provides faster speeds at lower RPM's to deliver significant improvements in fuel economy. Use the REBEL TBX propeller on offshore boats, large runabouts, and even larger pontoon boats to make them perform at their maximum potential. (available for v-6 15-spline in standard and counter rotation. now available in 1" pitch increments)"

However if you are happy with the 22" best leave it as prop fiddling can get very expensive
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Old 05 November 2009, 16:24   #165
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If you're after top end speed, then you would have been better off with the Solent.
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Old 05 November 2009, 16:28   #166
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Yes I mistyped. I thought you could get a 23" Viper but you can't so ignore me, in fact you can't get a 23" Raker either

The Rebel Range that BRP produce is what you are after.

"Rebel TBX Size range from 15" to 25" pitch. This is a stainless steel 3 blade propeller that is designed and engineered to deliver improved midrange cruising speeds and top end speeds. Larger diameter and efficient blade contour provides faster speeds at lower RPM's to deliver significant improvements in fuel economy. Use the REBEL TBX propeller on offshore boats, large runabouts, and even larger pontoon boats to make them perform at their maximum potential. (available for v-6 15-spline in standard and counter rotation. now available in 1" pitch increments)"

However if you are happy with the 22" best leave it as prop fiddling can get very expensive
Thanks Chris, I think I agree! I'll trust Roy's decision, I'm sure whatever I were to do it would wreak it!
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If you're after top end speed, then you would have been better off with the Solent.
I'm not! I just wanted to ram it home that its a 250HO
No other motive
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Old 05 November 2009, 16:31   #167
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I'm not! I just wanted to ram it home that its a 250HO
Why?
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Old 05 November 2009, 16:36   #168
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Why?
haha 'cos its cool! 3.4litre block publicised as a "racing engine" plus, I'm jolly bored cooped up here doing nothing
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Old 05 November 2009, 16:39   #169
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Thanks Chris, I think I agree! I'll trust Roy's decision, I'm sure whatever I were to do it would wreak it!


I'm not! I just wanted to ram it home that its a 250HO
No other motive
Ram away.

The last guy to 'ram' a bigger engine advantage home to me used to soil his underwear the moment the sea state rose beyond 'slight'. I'm sure that you're not that sort of guy.
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Old 05 November 2009, 16:42   #170
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Any idea what Roy's replacing it with?
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