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Old 30 November 2005, 08:54   #1
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What sort of speed can I expect?

From a 2.8 metre Zodiac SIB, with a 2hp 2stroke evinrude with an inflatable floor please? thanks guys
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Old 30 November 2005, 08:58   #2
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Probably not even fast enough to plane
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Old 30 November 2005, 09:09   #3
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Quote:
Originally Posted by ollyit
From a 2.8 metre Zodiac SIB, with a 2hp 2stroke evinrude with an inflatable floor please? thanks guys
5mph from what I read in a yachtie mag the other day.
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Old 30 November 2005, 09:16   #4
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i had a bombard ax 3 with a 2 hp yamaha, the daughter loved it but is was oh soooooooooooo slllllllllllllllllllllllllllllllooooooooooooowwwww wwwwwwwwww.

basically it will be so slow you will be amazed, if you had a 4 or 5 hp you might be able to get it to plane if the boat had a flat bottom. but an 8hp or 9.9 would be a lot better.

2hp are very light though!!

so 3 to 5 mph down wind down stream down hill !!!

oh and when you open it up....it just gets louder!!

it defo wont plane trust me

ignore codders as he only knows what he has read in a magazine.......i have actually owned one of these awsome powerful 2hp engines and i know all about em, the acceleration and performance, breathtaking.

fuel economy is quite good, about a cup full will last you a week!!

only sold it as i could swim faster...upgraded to a 4hp!!!
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Old 30 November 2005, 09:41   #5
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It depends!

When I were a lad (1980s) we had an Avon redstart with a 2hp Evinrude. About 9' long, wooden floorboards (so had a flat bottom) and with the bolt on type outboard bracket.
The floorboards were braced by some non-standard longitudinals and the outboard bracket could be prevented from wrapping itself under the boat by lashing this to an eye in the after board

On flat water if you locked the steering straight ahead and steered by transferring your weight or by kicking the tiller, whilst lying down on the inflatable seat, it would plane. Just.

A mate had a "GB" inflatable of about the same size but with a hard transom. With floorboards. That would plane easily with his Merc 2.2hp.
Went even better with the restrictor plate taken out of the carb - 3.3hp instantly for no expenditure.

Small boats are fun.

It's all down to correct weight positioning, weight vs. power and finally bottom shape.

Three years at University studying Naval Architecture just confirmed what I knew when I was ten
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Old 30 November 2005, 10:05   #6
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Thanks guys! some good opinions there, keep em coming good or bad
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Old 30 November 2005, 10:05   #7
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Parents had a 3m SIB with a 2hp, very slow and only any good as a tender (but lots of fun).
I used to have a mirror dinghy which I rigged with 2 x 2hp yammies. Once I had remembered to plug the centerboard casing it was great. Could turn on a 6 pence (engines were controlled individually). Progressed to a Zodiac 4m with old evinrude 35 - faster (felt very fast) but turning was very poor.
A friend had one of those hexagon shaped avon SIB's (under 3m) with a 15 and that was downright dangerous.
My guess is you would get about 6kts
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Old 30 November 2005, 10:11   #8
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Olly

Why?



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Old 30 November 2005, 10:18   #9
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I bought a bargain evinrude 2hp

possbile sib in the pipeline, just for a laff
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Old 30 November 2005, 10:37   #10
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Quote:
Originally Posted by Richard B
Probably not even fast enough to plane
Are you 'avin a larf?!!! It'll be barely fast enough to make headway!! A mate of mine has a 2.8m Wetline with an inflatable keel bag with a 4hp Johnson on it. That'll only just plane with coaxing with a kid driving.
We have a 2.3m Quicksilver, I put a 5hp Tohatsu on that. Now that was fun! It was a little wave jumper.
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