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Old 10 September 2005, 05:46   #11
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Isnt there supposed to be rubber bushings in props to stop this kind of thing happening.

What make stainless prop did you have on that caused yoor drive shaft to break.
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Old 10 September 2005, 06:23   #12
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Isnt there supposed to be rubber bushings in props to stop this kind of thing happening.
Yes

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Originally Posted by roycruse
What make stainless prop did you have on that caused yoor drive shaft to break.
Standard Suzuki Aly Prop
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Old 10 September 2005, 06:28   #13
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Surely though, if you're idling, and the ali-prop hit rock, the impact to the engine would be similar? - I'd expect a nice dink in the ali prop and probably a small mark on a stainless prop, but I wouldn't expect something pretty fundamental inside the engine to go twang

I know of a couple of people locally who have hit pots at full speed with ali props, and it has been the gearbox that ended up being replaced, not the prop or the bush.

Does anyone else have any experience of a drive shaft failure within the DF140 I wonder?..... I'll trawl through some of the US forums later on....

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Old 12 September 2005, 07:05   #14
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Saturday 9am on a silky smooth Sea

Just off Chichester, on a very very flat sea I mangaged to get 48 knots at 6000rpm. I am using the Standard prop that comes on the Suzuki DF140 on the back of my new Avon 580DL SEASPORT
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Old 12 September 2005, 09:44   #15
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Just off Chichester, on a very very flat sea I mangaged to get 48 knots at 6000rpm. I am using the Standard prop that comes on the Suzuki DF140 on the back of my new Avon 580DL SEASPORT
You say standard prop - i assume you mean the standard aluminium one - but what pitch - is it 21"
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Old 12 September 2005, 10:50   #16
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You say standard prop - i assume you mean the standard aluminium one - but what pitch - is it 21"
Yes it is the standard 21" aluminium prop.
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Old 12 September 2005, 10:56   #17
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48 knots - that good to hear

I think I should be able to get similar top end out of my ribcraft when I get it. - similar sized boat... after ive run it in that is...
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Old 12 September 2005, 11:11   #18
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48 knots - that good to hear

I think I should be able to get similar top end out of my ribcraft when I get it. - similar sized boat... after ive run it in that is...
Mine took 20hrs but soon had it done, you'll get annoying bleeping sound, plus oil flashing warning light, telling you it's time to get it serviced at 20hrs.

I was very impressed with my new Rib at 48 knotts, ok I know I was on a flat sea but it was absolutley solid, no wobbling, felt very balanced, even turning at that speed felt reassuring. No doubt stick some chop in that and it will be a different story.
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Old 12 September 2005, 12:50   #19
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[I was very impressed with my new Rib at 48 knotts [/QUOTE]
Richard,
I bet you were,i should think you had a smile on your face something like this at the time.

Rob
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Old 12 September 2005, 13:10   #20
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How come at 6000revs on mine, with 21" ali suzuki prop, I maxed out at only 41knots

You must have an incredibly low amount of slip on that prop to get 48knots at only 6000revs - I'd expect the engine to be nearer 6300revs to get that sort of speed.

I assume you've measured that on gps on slack water?

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