Go Back   RIBnet Forums > RIB talk > Engines & props
Click Here to Login

Reply
 
Thread Tools Search this Thread
 
Old 04 June 2017, 21:05   #1
Member
 
Country: UK - England
Town: Chester
Boat name: Impulse
Length: 3m +
Join Date: Apr 2017
Posts: 56
Already looking for another motor

As our 4HP motor we bought is a little underpowered - not able to get our 3-metre SIB up to top river speed, topping out at 5mph - we are looking at getting a bigger one already.
I have found this one on eBay:
EVINRUDE 9.9HP SHORT SHAFT OUTBOARD
Old, but seems in good nick.
Any thoughts?
__________________
Katie.harker is offline   Reply With Quote
Old 04 June 2017, 21:07   #2
RIBnet admin team
 
willk's Avatar
 
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,912
Stick with the one you have
__________________
.
willk is online now   Reply With Quote
Old 04 June 2017, 22:25   #3
Member
 
Country: UK - Scotland
Town: Montrose
Boat name: Ruby Blue
Make: Honwave & SW4800cc
Length: 3m +
Engine: Mariner 15 & 60efi
Join Date: Mar 2014
Posts: 145
RIBase
"Get a large rib up on the plane" too funny for further comment! 😂
__________________
warder54 is offline   Reply With Quote
Old 04 June 2017, 22:51   #4
Member
 
samt's Avatar
 
Country: UK - England
Town: Midlands
Boat name: SR4.7
Make: Avon
Length: 4m +
Engine: Mariner 60 EFI
Join Date: Jul 2006
Posts: 1,106
RIBase
You can get a much better engine for £600, I wouldn't even pay £200 for that
__________________
samt is offline   Reply With Quote
Old 04 June 2017, 22:59   #5
Member
 
Country: UK - England
Town: Chester
Boat name: Impulse
Length: 3m +
Join Date: Apr 2017
Posts: 56
We are definately going to upgrade to a bigger one at some point in the near future.

We've been looking for the last few weeks but have not found anything above 9HP for less than £1000.
We are also going to keep any eye on this auction: MARINER 10 HP 2 STROKE OUTBOARD ENGINE (NO RESERVE) | eBay
Any thoughts on this one?
__________________
Katie.harker is offline   Reply With Quote
Old 04 June 2017, 23:16   #6
Member
 
Pikey Dave's Avatar
 
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 12,178
RIBase
Quote:
Originally Posted by Katie.harker View Post
We are definately going to upgrade to a bigger one at some point in the near future.



We've been looking for the last few weeks but have not found anything above 9HP for less than £1000.

We are also going to keep any eye on this auction: MARINER 10 HP 2 STROKE OUTBOARD ENGINE (NO RESERVE) | eBay

Any thoughts on this one?


Personally I wouldn't buy any secondhand engine unless I could see it in the flesh & running. Caveat emptor
__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4:Don't feed the troll
Pikey Dave is offline   Reply With Quote
Old 04 June 2017, 23:35   #7
Member
 
Yabadabadoo's Avatar
 
Country: UK - England
Town: London
Make: Aerotec 3.8
Length: 3m +
Engine: Mercury T/S 15hp
Join Date: Jun 2015
Posts: 370
Don't be hasty this one http://www.rib.net/forum/showthread.php?t=75302 came up a while back, it took me 4-6 weeks daily search to find my first 15hp £500.00 scruffy and no history on that just a dealers 3 month warranty

Mercury/Marina/Yamaha seem to have the best reputation if you are going to be impulsive again 😊

If you like the look of an eBay outboard then approach the seller and ask the questions about service, ownership and ask would they mind an inspection, possible pressure test and to see it started from cold and running. You might be a pain to some but it might find you a genuine owners with a cared for outboard
__________________
Yabadabadoo is offline   Reply With Quote
Old 05 June 2017, 01:50   #8
Member
 
Country: New Zealand
Town: Auckland
Make: Gemini Waverider 550
Length: 5m +
Engine: Johnson 90hp
Join Date: Jul 2011
Posts: 112
What is your SIB rated up to? We started with a 4hp on our 3.4m RIB and upgraded to a Tohatsu 18hp (which I was told by a Mercury dealer is identical to the Mercury 15hp in all respects).

Having the extra up and go (and getting onto plane so easily) made for a much more enjoyable experience).

The motor was very old and looked terrible but never let us down. It had been serviced.
__________________
RichardinNZ is offline   Reply With Quote
Old 05 June 2017, 08:45   #9
RIBnet admin team
 
Fenlander's Avatar
 
Country: UK - England
Town: Cambridgeshire
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Yam 15 Tohatsu 9.8
Join Date: Nov 2007
Posts: 8,996
KH I think you need to look very hard before you leap (again) which should be the feeling from other posts above.

That Suzuki you bought is only 3yrs old and had never been run so have you got it fully run in yet (10hrs) to know it is up to its best performance?

In truth it ought to make top river speed if that is about 6mph. Are you sure the boat/keel are fully inflated checked with a pressure gauge... also I assume you are not taking out loads of folks? In case of any performance issue you need a £15 Ebay rev counter to see if the engine is reaching its maximum, perhaps you have an unsuitable prop pitch.

If you are sticking to rivers I'd keep with the 4hp and get it working to its best. If you are going to venture to salt water then have a good think and "invest" in a nice condition motor as near to 2006 as you can if you are sticking to used 2-strokes. One important point... with the 10hp motors you have mentioned the 10hp & 15hp are the same motor just with tuning/carb differences... so you might as well wait for a 15hp as there's little point carrying the weight of a 15hp for just 10hp.

AS a rule when looking for a used motor I'd far rather buy from a genuine private seller who has owned the motor for a while and knows how it's been used and cared for... rather than like the Evinrude someone who is obviously breaking motors for spares and doing the odd one up for profit.... they have likely only run them in a bucket and don't know how they go on a boat.
__________________
Fenlander is offline   Reply With Quote
Old 05 June 2017, 09:29   #10
RIBnet admin team
 
Fenlander's Avatar
 
Country: UK - England
Town: Cambridgeshire
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Yam 15 Tohatsu 9.8
Join Date: Nov 2007
Posts: 8,996
KH... here's your new motor... not too far from you.

http://www.rib.net/forum/f10/15hp-ma...tml#post748930
__________________
Fenlander is offline   Reply With Quote
Old 05 June 2017, 09:43   #11
Member
 
Yabadabadoo's Avatar
 
Country: UK - England
Town: London
Make: Aerotec 3.8
Length: 3m +
Engine: Mercury T/S 15hp
Join Date: Jun 2015
Posts: 370
I was holding off on advising on that as I don't know enough on that year, I think under the hood it's the same as the later models? Forward/reverse on side of lump?

This series was a strong contender when I was on the hunt, with little use it sounds ideal - get in touch!
__________________
Yabadabadoo is offline   Reply With Quote
Old 05 June 2017, 09:47   #12
RIBnet admin team
 
Fenlander's Avatar
 
Country: UK - England
Town: Cambridgeshire
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Yam 15 Tohatsu 9.8
Join Date: Nov 2007
Posts: 8,996
I've had great service from the 20/25hp Mariners of that era... with a known history and from a member on here it has to be worth a punt.
__________________
Fenlander is offline   Reply With Quote
Old 05 June 2017, 10:13   #13
Member
 
Country: UK - England
Town: Sussex
Boat name: Bombard
Make: Aerotec 380
Length: 3m +
Engine: Mercury Mariner 15hp
Join Date: Jul 2010
Posts: 3,499
I was going to post exactly the same as above - grab Nugent's Mariner 15 in a flash.
__________________
Max... is offline   Reply With Quote
Old 05 June 2017, 13:02   #14
Member
 
Country: UK - England
Town: Chester
Boat name: Impulse
Length: 3m +
Join Date: Apr 2017
Posts: 56
Our SIB is only rated for 10hp
__________________
Katie.harker is offline   Reply With Quote
Old 05 June 2017, 13:05   #15
RIBnet admin team
 
Fenlander's Avatar
 
Country: UK - England
Town: Cambridgeshire
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Yam 15 Tohatsu 9.8
Join Date: Nov 2007
Posts: 8,996
Oh damn... well in that case seek out the best 2000-2006 year Tohatsu 9.8 2-stroke you can find.
__________________
Fenlander is offline   Reply With Quote
Old 05 June 2017, 13:11   #16
Member
 
Country: UK - England
Town: Chester
Boat name: Impulse
Length: 3m +
Join Date: Apr 2017
Posts: 56
We've definitely learned our lesson on motors -mostly. We didn't get to see the 4hp running but it had never gotten its toes wet so we risked it.

We'll be going to view and see it running before committing.

It's just the 2 of us on the water but we are heavy - read FAT, 250 kg between us - plus deck chair and rest of luggage.

I certainly believe it's the right pressure - we use a pump with a gauge and an auto cut off when it gets to right pressure.

We have now been out for 10 hours and have tried to run it in right.
I'll speak to OH about the rev counter.
__________________
Katie.harker is offline   Reply With Quote
Old 05 June 2017, 13:14   #17
Member
 
Country: UK - England
Town: Sussex
Boat name: Bombard
Make: Aerotec 380
Length: 3m +
Engine: Mercury Mariner 15hp
Join Date: Jul 2010
Posts: 3,499
Quote:
Originally Posted by Katie.harker View Post
We've definitely learned our lesson on motors -mostly. We didn't get to see the 4hp running but it had never gotten its toes wet so we risked it.

We'll be going to view and see it running before committing.

It's just the 2 of us on the water but we are heavy - read FAT, 250 kg between us - plus deck chair and rest of luggage.

I certainly believe it's the right pressure - we use a pump with a gauge and an auto cut off when it gets to right pressure.

We have now been out for 10 hours and have tried to run it in right.
I'll speak to OH about the rev counter.
TBH I'd lose the 3m SIB and get a 3.4m rated to 15 or more.

And buy that engine. You might lose a bit on the boat but swings and roundabouts - and a 3.4 with 15 will be *much* better suited given your load.
__________________
Max... is offline   Reply With Quote
Old 05 June 2017, 13:14   #18
RIBnet admin team
 
Fenlander's Avatar
 
Country: UK - England
Town: Cambridgeshire
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Yam 15 Tohatsu 9.8
Join Date: Nov 2007
Posts: 8,996
I've just looked and as well as a 10hp limit the transom is only rated to 28kg which means pretty well every old 10hp 2-stroke is too heavy as they are usually nearer 35kg... but the aforementioned Tohatsu 9.8 2-stroke is within limits at 26kg.

See here at the bottom assuming yours is the one on the left... Europa Sport Aluminium Deck Inflatable Boats, 3m, 3.8m, 5.5m, 6m Heavy Duty Inflatable Boats

Edit... actually Max's advice is sound. If that 15hp engine on here suited you it would cost you half that of a decent Tohatsu 9.8 then that "saving" could cover the SIB upgrade.
__________________
Fenlander is offline   Reply With Quote
Old 05 June 2017, 13:20   #19
Administrator
 
John Kennett's Avatar
 
Country: UK - England
Town: Brighton
Length: 3m +
Join Date: May 2000
Posts: 7,109
Quote:
Originally Posted by Katie.harker View Post
Our SIB is only rated for 10hp

Buy Nugent's 15hp. You'll need to be quick though at that price.

Then buy another SIB that's rated to take that size of motor.

Then sell your existing setup while the weather's still nice.

Or keep looking for a 10hp, which will cost you more when you do find one. Then next year, when you realise it's still not what you want, buy a new SIB and a 15hp motor, all the while kicking yourself for not doing it sooner
__________________
John Kennett is offline   Reply With Quote
Old 05 June 2017, 13:27   #20
Member
 
Country: UK - England
Town: Chester
Boat name: Impulse
Length: 3m +
Join Date: Apr 2017
Posts: 56
Would it be better to sell boat and motor together or separately?
__________________
Katie.harker is offline   Reply With Quote
Reply


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




All times are GMT. The time now is 15:08.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.