Common Rail Diesels - Page 5

Redbay Rover · 06 November 2003, 13:42

Redbay have given me til christmas to decide on the engine, so i've got some time to wait and see what develops (and who develops it!). Redbay don't have the KAD300 on offer for the twin test they have arranged, but a KAD44. Still it should be interesting....

MeMe · 06 November 2003, 14:05

hopefully more so than this thread.......god it's gone on forever. Red, for a new comer you certainly know what buttons to press so, in the words of my dear old dad - "don't touch that again"

Redbay Rover · 06 November 2003, 14:13

It ain't over yet. Just one more thing. Redbay are recommending that should i go with the Yanmar that i should fit the bravo 2X legs as they are stronger and bravo 3x owners are known as "the broken leg club". Do you agree? Is bravo 2 a good choice?

MeMe · 06 November 2003, 14:21

[QUOTE]Originally posted by Redbay Rover
[B]It ain't over yet. Just one more thing.

Do you promise ?

Redbay Rover · 06 November 2003, 14:37

Believe me this whole engine thing is boring me as much as it is you. Hopefully it'll all be sorted out soon. Thanks to everyone for their help.

BTW: JW, where do you do most of your boating?

Andre · 06 November 2003, 14:40

Quote:

Originally posted by Redbay Rover
It ain't over yet. Just one more thing. Redbay are recommending that should i go with the Yanmar that i should fit the bravo 2X legs as they are stronger and bravo 3x owners are known as "the broken leg club". Do you agree? Is bravo 2 a good choice?

I hv made enquiries at Marine Power in Belgium and hv been told that for this application for sure Bravo 2 legs are not suitable. Bravo 2 are best for heavier boats, ie; heavier application ,
Bravo 2 has a longer leg and is much lower in the water

Bravo 1 or Bravo 3 would be more suitable

Andre

Dirk Diggler · 06 November 2003, 18:25

Quote:

Originally posted by Andre
Bravo 2 has a longer leg and is much lower in the water

Andre

Bravo 2's were designed for the "cruiser" market, and swing a much larger diameter prop. Bravo 1 is more performance orientated, a Bravo 3 sounds like the drive for you, all these mentioned are of course X's if being used with diesels.

jwalker · 06 November 2003, 20:43

Quote:

Originally posted by Redbay Rover

BTW: JW, where do you do most of your boating?

I'm east coast based so most, day to day, boating is local, Firth of Forth, Dunbar, Isle of May, St Andrews. Nothing too taxing. Most of the time, short, bumpy and uncomfortable.
Other times it's west coast and mainly the Outer Islands.

Pete7 · 08 November 2003, 21:57

So with our intrepid hero unable to afford ("cos he only has 3 other second hand ribs" source CH) the latest Canadian Aliminium icebreaking rib he sets to work on a major project and overhaul during the winter months of the latest addition to the fleet.

Hopefully he has a better understanding of Project Management than some others who regularly post on here (despite not actually owning a rib) and will therefore have the boat in the water by early spring.

Work in hand, engine overhaul, fuel tank replacement and the dreaded MCA coding.

Of course with the jet who cares about stern drive problems and the cat yes please.

Pete

Pete7 · 08 November 2003, 21:59

And one of the new boat, a great big stonking Tonka Toy of a boat.

Pete

Brian · 09 November 2003, 09:03

Pete7
I notice the engine pictured appears to be powered by Coca-Cola.
Could you let us all in on this secret new innovation?

Pete7 · 09 November 2003, 12:24

Use it as a cleaning agent, brilliant stuff. You must have seen what it does to copper coins. Not sure what it does to Stuuarts insides though,

Pete

thewavehumper · 09 November 2003, 19:17

Coca cola is a lot cheaper when there is a 2 fo 1, offer at this moment you can buy three botles for £3 at sainsbury's which works out at 73.29% cheaper than Jizer.

I never realised that Jasper was such a lump, there ain't many people make that engine look small ish

Redbay Rover · 12 November 2003, 23:43

Hate to drag this back up, but i'm going to anyway

. Redbay say the Volvo D6 might fit afterall, but at 750kg (about 200 more than the KAD300) is it worth it. It chucks out 300 Horsepower at the prop (Kad300 manages 272). Basically, ignoring all the other benefits (and disadvantages) of a common rail diesel, is this extra 25-30 HP enough to shove the extra 200kg? And what effect will torque play, bearing in mind the D6 produces considerably more than the KAD300?

Thanks in advance for your help and again sorry for bringing it back up, but it's an important decision and i intend to get it right.

TIM · 13 November 2003, 12:49

Talking to Allan Priddy last night, he sais the new Volvos look good but unproven.... I wouls tend to agree... Good look, and We might meet up at the RIB RAID in Bangor NI next July/Aug

Brian · 13 November 2003, 13:17

I dunno if this is the right way to think about it, but, using your figures......
A KAD300 at 550kg and producing 272hp has to push 2.02kg for each hp it produces.
A Volvo D6 at 750kg and producing 300hp has to push 2.5kg for each hp.
Therefore, dot-dot-dot, you are nearly 20 percent worse off with the Volvo.
or am I barking up the wrong tree?

Redbay Rover · 13 November 2003, 14:11

Two good points but what effect will the vastly superior torque have? I've also got to consider that the D6 is quieter, more frugal and way more refined than the KAD300. I think based on this the D6 will be the way to go (if they can make it fit).

On the boat front, redbay have got my tubes and fuel tank in, so it's starting. Can't wait!

Brian · 13 November 2003, 14:15

So, remind me again.
Why did you reject the Yanmar?

Redbay Rover · 13 November 2003, 14:58

I haven't rejected the Yanmar yet, i'm just using the KAD300 as comparison with the D6 to keep things simple. I'll decide between KAD300 and yanmar at a special comparison test redbay are arranging for me.

jwalker · 13 November 2003, 20:15

Redbay, what money is the D6 compared to the Kad 300?