Reply
 
Thread Tools Search this Thread
 
Old 28 November 2000, 12:09   #1
Member
 
Country: UK
Town: uk
Join Date: Oct 2000
Posts: 14
engines

Hello everyone,

Right, I've ordered a 5.85 fom those helpful people at Ribcraft. The big decision now is what engine to get.

It is not for diving or water-skiing or racing, it's really just a toy/runaround and so will only have 2 or 3 people aboard at any one time, although I'd like to think we could cross the channel in the right weather (we have specified the biggest fuel tanks possible).

I notice the coast-guard uses the same boat with a 75hp 2 stroke, yet I have been told that a 90hp 4 stroke is the best option for power and speed.

The price difference here is nearly £1000, which I could do if necessary, but it represents a lot of electronics, doughnuts and beer
???

Any opinions?

Thanks in advance everyone

Donald
__________________

__________________
donald is offline   Reply With Quote
Old 28 November 2000, 12:55   #2
Member
 
Country: Canada
Town: Newfoundland
Length: no boat
Join Date: May 2000
Posts: 2,097
Nice boat. I know a chap who has a 90hp Evinrude Ficht on one. Reasonably quick but he would prefer a 150hp!

Have you considered the Yamaha F100 4 stroke. Supposed to be a good engine.

HTH,
Alan
__________________

__________________
Alan is offline   Reply With Quote
Old 28 November 2000, 17:48   #3
Member
 
Country: Ireland
Town: Ireland
Boat name: Ally Cat
Make: Several
Length: 6m +
Engine: Several
Join Date: Oct 2000
Posts: 333
Hi Donald ,

I can whole heartedly recommend the Yamaha 100hp 4 stroke .

I have been running one of these on one of my boats for the last 6 months . Very reliable , great torque , Exxxxxtremeeeely economical ( IR£15 per day in fuel on an ISA / RYA L2 Powerboat course ) and actually as light if not lighter (165 KG )than a comparable 2 stroke.

As an aside , I had hoped to put a Yamaha 115 4 stroke on the craft in question but they weren't available back in June when we took delivery. I have since found out from some Yamaha people that the 100 hp is the preferred engine as it is not fitted with EFI electronic fuel injection . The problem with the latest efi is that your dealer must be equipped with a computerised diagnostic kit for even routine service . No Irish dealers (despite our being the software development capital of Europe ) have yet been equipped by Yamaha with this kit ...therfore , no servicing available for Yammie 115 4 strokes !

The 100 is a no nonsense purpose built 4 stroke . The proof ??? I have another 2 on order !

Best wishes ,

Stuart www.powerboat.org
__________________
Powerboat is offline   Reply With Quote
Old 29 November 2000, 02:56   #4
Administrator
 
John Kennett's Avatar
 
Country: UK - England
Town: Brighton
Length: 3m +
Join Date: May 2000
Posts: 6,829
Donald

I suggest that you pick an engine around 100 hp (eg 90 - 115). You are likely to find yourself running out of grunt with a 75.

There is lots of choice now, with conventional 2 strokes, high tech 2 strokes and four strokes. The modern 4 strokes are very quiet and economical, without any great weight penalty.

Yam 100 4-stroke - 162kg
Yam 115 2-stroke - 163kg
Honda 90 4-stroke - 169kg
Evinrude 115 Ficht - 170kg
Yam 115 4-stroke - 181kg
Honda 115 4-stroke - 225kg

This is not an exhaustive list, but does give some comparisons. I would not put the Honda 115 on a 585, but the others would all be OK.

The Yamaha 100 4-stroke would look to be a strong contender, and Yamaha have probably the best reputation for reliability.

I don't know how prices compare, but the Ficht 115 may also be worth a look. There were some early reliability problems, but as far as I know these have been sorted out now.

Hope this helps!

John
__________________
John Kennett is offline   Reply With Quote
Old 29 November 2000, 04:14   #5
Member
 
Country: UK
Town: uk
Join Date: Oct 2000
Posts: 14
Well...thanks for all that.

Ribcraft supply mariners as standard, tho' they can provide a yamaha. I have experience of yamaha engines, like them and am aware of their reputation for reliability.

Is the mariner so bad? Should I get a yamaha?

Tkanks again

Donald
__________________
donald is offline   Reply With Quote
Old 29 November 2000, 12:25   #6
Member
 
Country: Canada
Town: Newfoundland
Length: no boat
Join Date: May 2000
Posts: 2,097
Read in a a Boating mag last month that Merc have released a 115hp 4 stroke. EFI, weighed (from memory) about 10kg more than the equivalent 2 stroke. Presume that since Merc/Mariner are the same company Ribcraft would be able to supply you a Mariner variant.

HTH, Alan
__________________
Alan is offline   Reply With Quote
Old 29 November 2000, 19:30   #7
Administrator
 
John Kennett's Avatar
 
Country: UK - England
Town: Brighton
Length: 3m +
Join Date: May 2000
Posts: 6,829
Donald

I don't have any experience of the Mariner 4 strokes, but I've no reason to think badly of them (although I've always been a bit put off the large Mariners as to my untutored ear they sound like someone left a bag of spanners in them!)

The biggest Mariner 4-stroke is 90 hp, which at 175kg is a bit heavier than the Yam 100 4-stroke. Other than that, you could go for the 135 Optimax but that would be a bit excessive, and at 201kg is rather a big lump on the back of a 585.

Personally I would tend to go for the Yamaha 100, unless the Mariner 90 was much cheaper.

John
__________________
John Kennett is offline   Reply With Quote
Old 30 November 2000, 09:59   #8
RIBnet supporter
 
Brian's Avatar
 
Country: UK - Isle of Man
Town: Peel, IOM
Length: no boat
Join Date: Nov 2000
Posts: 2,277
RIBase
Donald, On my last boat, a Zodiac 5.5m, I had a version of the Honda 90 rated at 75hp. Beautiful engine-I highly recommend them. It won't help your engine weight problem to know that, or your power problem. It might just help your cashflow though-especially if you could locate a second hand one.
Good luck anyway with whatever you decide.
__________________
Brian is online now   Reply With Quote
Old 09 January 2001, 13:22   #9
Member
 
Country: Netherlands
Town: Netherlands
Join Date: May 2000
Posts: 10
Send a message via ICQ to Menno
Go For At least 100 hp oterwise you will be dissapointed i would recommend a 135 or 150 hp mariner optimax direct fuel injection
or a 150 hp evinrude Fight
this are very economic engine
don,t worry about the weight
little difference with other engines you need a little weight on the back of this boat depending on were your console stands
ofcourse
is it a jockey or a console ?
standing in the back or front of this boat?
you can expect 37-40 kts with the 100 yammie 4 stroke
and 45-50 with the merc/mar 135/150
greetings menno
__________________

__________________
Menno is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 05:38.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.