Reply
 
Thread Tools Search this Thread
 
Old 02 October 2004, 11:00   #1
Member
 
Country: USA
Town: Tarpon Springs
Boat name: the little boat
Make: Valiant
Length: no boat
Join Date: Oct 2004
Posts: 2
Motor advice please for a Valiant D-300

I have a Valiant D-300 (9ft-9inch, 88Lb) with a max 10 hp rating.
I had been running a 2-stroke 15 Hp motor on it, which was obviously overkill, but the motor was recently stolen so I need to repower.
I'm getting a 4 stroke this time (I have an F225 on my larger boat and love it), but wanted to go as light as possible without underpowering it.
My question, does anyone know if this boat will perform well with a 4-Hp (weighs under 50 lbs) or do I need to go higher?
The next size up weighs significantly more.
Thanks in advance.
__________________

__________________
Floridian is offline   Reply With Quote
Old 02 October 2004, 13:43   #2
Member
 
Country: UK - England
Town: london
Boat name: Frances May
Make: vailant DR450
Length: 4m +
Engine: mercury 50 hp
Join Date: Sep 2003
Posts: 761
Send a message via Yahoo to Daniel TD5
Valiant D300 Dynamic rib

engine shaft type short
Max engine 10 H.P.- 8.0kw
Recommended engine 8H.p.- 5.9kw
Minium engine 6 H.P.-4.4kw

Maximum engine weight 50kg

i would say don,t go over the max Weight 50kg and four stroke are much more
weight than two strokes. 4hp is under the recommended engine go for a 8 hp

dan
__________________

__________________
GET A RIB GET A LIFE
Daniel TD5 is offline   Reply With Quote
Old 02 October 2004, 18:39   #3
Member
 
Country: UK - England
Town: Chelmsford/Anglesey
Make: Avon SR/RibLite 3.1m
Length: 4m +
Engine: Honda 30hp/Yam 8hp
Join Date: Jul 2003
Posts: 970
Floridian

Forget the 4hp unless you plan to use it in a large pond. Take a look at the recently launched 'lightweight' Mercury 9.9 4-stroke which weighs in at 38kgs. Some of the other manufacturers' 8hp 4-strokes weigh more than this and you'll get the advantage of a couple of extra horses, too.

Having said that, you should be aware that small 4-strokes don't lend themselves to being chucked in the back of cars due to potential problems with sump oil drainage. Added to which, even 38kgs is a hell of a lump to carry very far when you compare it to a 2-stroke Tohatsu 9.8hp which weighs 27kgs. This is the lightest 10hp on the market and is used extensively on small tenders due to its excellent power to weight ratio. The large 4-strokes' advantage of low noise levels is also much less relevant in the small outboard sector and even fuel consumption differentials will be fairly negligible.
__________________
Phil Davies is offline   Reply With Quote
Old 03 October 2004, 17:40   #4
Member
 
Country: Netherlands
Town: Huizen
Boat name: BLIZZARDand COBRA
Make: TORNADO 5.8 and 6.5
Length: no boat
Engine: hpdi150 en 2.5 260
Join Date: Oct 2004
Posts: 28
you will love an f6 yamaha is the lightest 2 cilinder 4stroke of yamaha

the f4 is a pain in the ass horrible sound 1 cilinder 4stroke

the f 6 is a relative new engine model very very quiet 2 cillinder and strong enough
for you boat too come on plane with 2 persons

the bad thing of the small four stoke engines
is that you have too store it the right way if you do not the engine oil will
go out or on top off the pistons
other bad thing is that they are a little heavier

have fun menno
__________________
Mennojsh is offline   Reply With Quote
Old 03 October 2004, 18:01   #5
Member
 
Country: USA
Town: Tarpon Springs
Boat name: the little boat
Make: Valiant
Length: no boat
Join Date: Oct 2004
Posts: 2
Thanks for all the good advice. I think I'll go with the 8hp.
I hang the boat & motor on a davit in my boathouse so I would very rarely have it laying sideways, makeing the oil situation less of an issue (but that is a very good point you made).
The boat is so light I had hoped to go with a lighter motor, and the 8 is still manageable. I've sworn off 2 strokes (hate that oil stink & rougher idle).
__________________
Floridian is offline   Reply With Quote
Old 03 October 2004, 18:51   #6
Member
 
Country: Netherlands
Town: Huizen
Boat name: BLIZZARDand COBRA
Make: TORNADO 5.8 and 6.5
Length: no boat
Engine: hpdi150 en 2.5 260
Join Date: Oct 2004
Posts: 28
f6 is the same engine as the f8

you will love that engine
you only hear the water coming out of the pee hole when it is running
and it is strong enough
__________________

__________________
Mennojsh 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 21:07.


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