Reply
 
Thread Tools Search this Thread
 
Old 03 August 2008, 13:44   #1
Member
 
Country: UK - England
Town: stevenage
Boat name: no boat yet!
Make: no boat
Length: no boat
Engine: no boat
Join Date: Jul 2008
Posts: 21
new to boats

hi im new to boats and was thinking of getting a bombard 380 with a 15 hp 4 stroke motor. and ive heard that you cant lay a 4 stroke motor on its side because it damages it. and i wanted a boat i could fold up and put it in the car does anyone know anything about 4 stroke motors any help appriciated
__________________
daffid is offline   Reply With Quote
Old 03 August 2008, 13:55   #2
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: Tohatsu 30HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 11,622
Daffid, if you lay a 4stroke down the wrong way the sump oil can get back into the cylinders and then when you try to start it you are trying to compress oil rather than fuel/air mixture - which won't happen - so best case you can't turn over the engine and worst case you bend bits of metal and cost yourself a lot.

The good news is that normally you can lie a 4 stroke engine down just only in certain ways. The manual should make this clear (although I think they could do with some brightly coloured stickers on the actual engines). If you do lie the engine down wrong its not automatically a problem - stand the engine up right, remove the spark plugs, turn it over by hand a few times, clean and refit the plugs, check and top up oil level and off you go.

I am guessing you are going to do a PB level 2 course to get you started - and good training centre should be able to spend 10 minutes with you to demonstrate that procedure.
__________________
Poly is offline   Reply With Quote
Old 03 August 2008, 14:02   #3
Member
 
Country: UK - England
Town: stevenage
Boat name: no boat yet!
Make: no boat
Length: no boat
Engine: no boat
Join Date: Jul 2008
Posts: 21
thanks

thanks for your help
__________________
daffid is offline   Reply With Quote
Old 03 August 2008, 20:06   #4
MrT
Member
 
Country: UK - England
Town: Poole, Dorset
Make: Ribeye 550
Length: 5m +
Engine: Yamaha 100
Join Date: Aug 2008
Posts: 26
Daffid,

I agree with Polwart about laying down the engine, but think that a 4-stroke 15 might be a bit under-powered for a 3.8m SIB. I have just bought a 3.8 Honda Honwave Air-V floor and have a 2-Stroke Mariner 15 which pushes it along nicely but i would imagine its a lot lighter than a 15hp 4 stroke. Anything big than a 15 though is getting a bit big to cart around in your car so my advice would be get a 15 2 stoke, or go for a 20-25 4 stroke but keep the boat on a trailer although that defeats the object of having a boat that folds away!

One other bit of advice is get yourself a Bravo 12 High pressure pump taking the strain out of inflating your boat each time. The inflatable floors on a lot of the new boats needs around 11.7 PSI in, and this is the only electric pump that can do it. If you are interested i amd selling one on eBay that has a built-in battery-ideal for inflating at the waters edge or away from your vehicle without carrying a seperate battery pack around. to have a look search for Bravo 12 BST HP Batt and you will see it as its the only one on there.

I only wish they were available years ago as i have been struggling with my 3 metre sib for 7 years!

Happy Boating
__________________
MrT is offline   Reply With Quote
Old 03 August 2008, 20:57   #5
Member
 
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,299
agree will polwart!!
__________________
matt h 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




All times are GMT. The time now is 15:39.


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