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Old 11 December 2007, 15:25   #21
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Then you haven't read my previous posts properly.

I have a lot of time for, and good opinion of, (and knowledge of) Venturers as a youth training organisation.

.

Oh really! You could have fooled me

and I quote

Just shown that to a couple of crew here who have been driving (big) water jets for years.

Reaction - laughter and much use of the word "knob" lol...

"We advise"... just who does this joker think he is"

That seems quite agressive and personal to me. Not that I really give a flier I just don't like bull!

Out of interest they have been running jets for years and the boats are good un's. The comments about having a 1to1 gearbox is bang on ( sorry cooks!) and I'd put one in my Avon If I had the room. The backflush has got me out of trouble a few times in Peterhead harbour when we have been doing drills to close to the Jellyfish herds.

And yeah Jets are wobbly at slow speed and the answer is more revs and less bucket I think that got covered to! But Hey WTF do I know!
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Old 11 December 2007, 15:30   #22
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Matt/Tiffy

What revs does the Iveco run to and what Model Hamilton do you have
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Old 11 December 2007, 15:51   #23
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Matt/Tiffy

What revs does the Iveco run to and what Model Hamilton do you have

HI,

Jet is a Hamilton HJ322

Iveco is a 400 hp, runs at 3900 revs pulling 30 knots

looking next year at getting a 450 hp Iveco as we used to have a much heavier CAT 450.

a lighter 450 should match up pretty sweetly

and the jelly fish herds..i know the ones, we get em in beaulieu river, only small little buggers but annoying to pick out the filter!

Regards
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Old 11 December 2007, 16:06   #24
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.......only small little buggers but annoying to pick out the filter!

Regards
Not as annoying to you as it is to them, though...........
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Old 11 December 2007, 16:10   #25
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was the cat 450 a 3126 and if so why did you swap it out!
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Old 11 December 2007, 17:23   #26
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Not as annoying to you as it is to them, though...........
Very true lol

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was the cat 450 a 3126 and if so why did you swap it out!
will check later, reason we swaped was ECU was buggering up and Cat wernt being to helpful with fixing it, we decided to change to the Iveco as it was a smaller, lighter engine and also they are at the top end of Southampton water (Marlin Marine) so if we got a problem the "Solution" was local..

I did like the catapiller, fantastic engine but the Iveco has been equally awesome in its own right.

Matt
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Old 11 December 2007, 18:17   #27
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Jellyfish herds
ther corld flokks nott hirds yew nobbur

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But Hey WTF do I know!
fuk orl

gaRf
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Old 11 December 2007, 18:27   #28
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Oi gArfie

I stand corrected about the flocks with regards to the second of your comment then why dont you just go and flock yourself
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Old 11 December 2007, 18:31   #29
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I just don't like bull!

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Old 11 December 2007, 18:38   #30
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I just don't like bull!
gud jobb yew didunt saiy pigg orr yood av ad anuvver blakk iye

garF
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Old 11 December 2007, 18:46   #31
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?
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Old 11 December 2007, 18:51   #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, 18:57   #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, 18:59   #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, 19:26   #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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