how fast

gtflash · 09 June 2005, 18:49

how fast would a scorpion 7.5m with yamaha 240 hp diesel go??

Alan · 09 June 2005, 19:10

40ish knots tops.

Richard B · 09 June 2005, 19:54

What hull number is she?

Brian · 10 June 2005, 07:16

I'd go for 45knots.

John Kennett · 10 June 2005, 07:54

I reckon that's probably about right.

John

Andy Gee · 10 June 2005, 09:21

Agree with Brian

Alan · 10 June 2005, 11:08

I did say 40ish!
Blue Ice (and I am sure Richard will correct me if my memory is a bit hazy) tops out at around 45kts and thats a 7.5m with a 200 outboard. Lighter weight than a diesel so I reckon the additional 40 hp wouldnt make that much odds.
Are we talking new or secondhand boat? I do recall a grey 7.5m Scorp with bucket seats and a yam 240. Last saw it a few years ago off South Devon.

Nick Hearne · 11 June 2005, 11:54

http://www.ribsforsale.com/detail.asp?RefNo=3787212
Would this be the one?

TIM · 12 June 2005, 09:31

Thats some Anchor !!!!!!

and

Its easy to , turn up the pump on that engine to get up to about 280hp...

Paul Glatzel · 12 June 2005, 21:13

Our 8.5m with 315Hp Yanmar + B3 ('Bojangles') does about 47-50knots as i recollect - i sound vague as i don't really look at the GPS when we're at speed!

Paul

gtflash · 13 June 2005, 08:13

yep that the boat, is it really easy to squeeze more power out that motor??

Chris Murray · 13 June 2005, 08:31

Only £22k?

I think that a similarly specified MK II would cost more than twice this amount. How old is it?

Is the price so much less because the MKII has come out and forced down the price of the MKI? If so, the same could happen to the MKII when/if a MK III ever came out.

Chris.

Jonny Fuller · 13 June 2005, 09:02

Quote:

Originally Posted by Chris Murray

Is the price so much less because the MKII has come out and forced down the price of the MKI? If so, the same could happen to the MKII when/if a MK III ever came out.

Chris.

And god help us if they bring out a mk4!

Kernow Buoy · 13 June 2005, 09:38

Quote:

how fast would a scorpion 7.5m with yamaha 240 hp diesel go??

Depends how good your wheel clamp is!

Nick Hearne · 16 June 2005, 16:14

GT did you get to see this boat?
Nick

Richard B · 16 June 2005, 16:33

Quote:

Originally Posted by Alan

Blue Ice (and I am sure Richard will correct me if my memory is a bit hazy) tops out at around 45kts and thats a 7.5m with a 200 outboard. Lighter weight than a diesel so I reckon the additional 40 hp wouldnt make that much odds.

Alan you are spot on. I think that the inboard diesel may struggle to reach the 45 mark with more hull in the water, and that hull looks like it has been anti-fouled. I would guess that this boat is the same year as Blue Ice from the detail, so £22k is a good price. As the boat appears to be ex-charter, the engine hours may be high, but the Yamaha 240hp has a good reputation and can clock up thousands of hours in the right hands.

Jelly · 17 June 2005, 07:58

RE the Yamaha,
I've got the 165HP engine on Yamaha's hydradrive leg.
I think they are good legs but remember they are a hydraulic gearbox so the first weak link is the shock drive between the gearbox and the engine. Though I was told the hydraulics absorbed the shock but the shock drive needed refurbing when we hit something.
Also check the stearing for slop, there is a seal on the transom assemble top steering bearing that can leak after a time and the steering arm is steel and the shaft is stainless and can develop some play between the two. The pinch bolt is a right GIT to get to to tighten up if the transom has not been cut away enough - after talking to Yam stern drive dealers mine was not the first time it has been heard off.

Over all I think its a good system, you hear of a lot less problems with them than the yanmar/murcury leg combo. Could this be due the numbers fitted and use? Don't hear much about volvos and steyrs also but they apear to be less popular on ribs I wonder why?
Jelly

gtflash · 18 June 2005, 16:16

thanks guys gonna go see it this week but dont rekon it will be quick enough really

ta gt