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Old 11 December 2007, 13:46   #31
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Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
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Originally Posted by Jon Brooks View Post
?
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Old 11 December 2007, 13:51   #32
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Matt

The Hamilton units are rated up to 2900 RPM idoes your gearbox have any reduction or have you had any bearing work done.

Also when you whipped the Cat out and put an Iveco in I presume the toobs rose out of the wqater a bit has this affected the high speed turning at all. Did you gain speed or lose it with the replacemant engine
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Old 11 December 2007, 13:57   #33
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Quote:
The Hamilton units are rated up to 2900 RPM idoes your gearbox have any reduction or have you had any bearing work done.
I am not sure, will find out for you.

Quote:
Also when you whipped the Cat out and put an Iveco in I presume the toobs rose out of the wqater a bit has this affected the high speed turning at all. Did you gain speed or lose it with the replacemant engine
Being a 4 ton boat it didnt make a noticable difference with tube hight out of the water, Tubes sit above the waterline anyway...just.

The boat turns alot sharper than she used to, especially to Starboard. Ride is also softer and easier.

Speed wise we lost three knots after we had played around with impelles and gearboxes etc, unsure what affected and were, mainly because i cant remember lol.

Will dig a little deeper and find out for you.

Matt
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Old 11 December 2007, 13:59   #34
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I

The boat turns alot sharper than she used to, especially to Starboard. Ride is also softer and easier.
wakes you up when it first happens on a stand up boat?
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Old 11 December 2007, 14:26   #35
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Indeed!

although we are in a reasonably enclosed helm position so dont fee it so much.

I think the crew who are positioned just behind the lower part of the consol frame get a bit of spray when you turn reasonably tightly...

So maybe we should use it to wake them up lol
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