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Old 27 January 2003, 13:22   #21
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Country: UK - England
Town: Blackpool
Boat name: To Exi
Make: new sib 4 man
Length: 8+ft
Engine: Mariner 4hp long shaft
Join Date: Nov 2002
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Yes I am a bit Strong willed at times and maybe a little outspoken so I will take your comment as tenacious a compliment.

So are you running two engines?

And what hull are they in,Im interested as we seem to be the only two ribs running the same engines on rib.net anyway.But with very different drives.

Im also interested to see weather we can help others who may be contemplating the same set up as if they speak to some in the Trade they will get what they want to sell em.

What speed will it do with those engines and drives?

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Old 27 January 2003, 13:27   #22
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JW, excellent choice of drive, I have experience of it myself but on a petrol engine, 8.2GSi.

The only problem I had was the mechanical indicator sticking when the boat was left in the water for a few days. Easily remedied, a wiggle with one hand.

They used to have a built in "weak link" between upper & lower shafts, broke it once due to operator error. No big deal, replaced in a couple of hours.
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Old 27 January 2003, 15:06   #23
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Well the good News is the Engines have arrived safely and it looks like all the electronics ,Radar,GPS,Navtex, 2nd station Chartploter etc are all there.

So far so good.
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Old 27 January 2003, 19:15   #24
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Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
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Well here's the info. since you're on your best behaviour, Crazyhorse.

One engine, predicted speed ...I reckoned about 50mph, Volvo man reckoned 52mph after he did his calculations. The engine is going into a Humber Offshore Pro. Got the bare boat just over a week ago. The engine is due on 27th so it should arrive any day now. Just extended my garage as a boat house/workshop. All the steel, suspension etc., for the trailer, is here as is the radar, plotter etc. So, I'd better get welding and fibreglassing pronto.
Dirk, I believe the protection device is still part of the current drive. Is it worth carrying a spare? How did you break yours?
For anyone who might be seriously interested. My present boat will be for sale shortly. It's a 6.5 metre Humber, 200hp + wing + full electronics, 6 wheel trailer and lots, lots more. Will post it in Ribs for sale when I'm ready to sell.
So, Crazyhorse, you now know all there is to know.
Cheers,
JW.
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Old 27 January 2003, 19:30   #25
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Country: UK - Channel Islands
Town: St Martins
Boat name: MATRIX
Make: Jeanneau Leader 805
Length: 8.05
Engine: Volvo KAD 43 Diesel
Join Date: Jan 2003
Posts: 248
FYI

All Volvo KAD engines on Duo props must have Stainless Steel props or you leave yourself open to the blades disintergrating as the alu props cant handle the torque.

SS ones give you extra speed and more fuel economy.

Dom
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Old 27 January 2003, 19:32   #26
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Well Mr J W,

Thanks for your post .

1x are they putting a cat B ce mark on the Hull and what length and beam.

2x Good luck with her,

seems Im going to be a little slower than you.

See that didnt hurt did it.

Dom Im on ss and soltron i hope.
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Old 28 January 2003, 04:32   #27
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Country: UK - Scotland
Town: Isle of Skye
Boat name: Seafari - VHF CH 71
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Length: 6m +
Engine: Volvo/Iveco/Suzuki
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All Volvo KAD engines on Duo props must have Stainless Steel props or you leave yourself open to the blades disintergrating as the alu props cant handle the torque.

Not True

Volvo have only just started selling S/S Props with there engines - as standard- If you hit something HARD with your S/S Prop the prop stays Ok - and just smashes your gear Box- Alu Prop - Blades break - bung new ones on.
I always operate with Alu Props.

You Must be thinking of the Yamaha Inboard - they are the ones that the props cannot handle the Torque - my mates on his 5th

Pete F
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Old 28 January 2003, 05:39   #28
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Quote:
Originally posted by seafariskye
All Volvo KAD engines on Duo props must have Stainless Steel props or you leave yourself open to the blades disintergrating as the alu props cant handle the torque.

Not True

Volvo have only just started selling S/S Props with there engines - as standard- If you hit something HARD with your S/S Prop the prop stays Ok - and just smashes your gear Box- Alu Prop - Blades break - bung new ones on.
I always operate with Alu Props.

You Must be thinking of the Yamaha Inboard - they are the ones that the props cannot handle the Torque - my mates on his 5th

Pete F
Errr no sorry Pete, I even have the Volvo memo to prove this.

KAD engines have so much torque they bend the alu props causing them to pit and eventually come apart, I have seen it first hand as it happened on my boat and also a Princess, luckily I caught mine in time the guy with the princess didnt.

Dom
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Old 28 January 2003, 06:34   #29
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Dom

FACT

Used daily - used commercially - 1800 hours later,No Pitting, No Breaking, Nothing wrong in any way with the Alu Props - Maybe on a different boat eg a Princess,(which is allot heavier) but not on either of the volvo's I have.
Given the choice would not want a stainless prop, as said more breaks than just the prop if you hit something - Maybe just different set ups for boats other than a RIB?

Maybe should not put your foot down so quick, then you will get less torque?

Pete F
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Old 28 January 2003, 08:21   #30
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Join Date: Jan 2003
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Quote:
Originally posted by seafariskye
Dom

FACT

Used daily - used commercially - 1800 hours later,No Pitting, No Breaking, Nothing wrong in any way with the Alu Props - Maybe on a different boat eg a Princess,(which is allot heavier) but not on either of the volvo's I have.
Given the choice would not want a stainless prop, as said more breaks than just the prop if you hit something - Maybe just different set ups for boats other than a RIB?

Maybe should not put your foot down so quick, then you will get less torque?

Pete F
True RIBs are alot ligher so would not get this problem as much but I have SS props now so am not worried. Glad I had them fitted tho as I picked up a hesian sack which would have ripped my aluminium blades off I reckon.

Dom
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