Fitting an outboard

[whisper]

Hi, I'm going to be fitting a 40hp outboard on an SR4 soon and I wanted to know if outboards are fitted directly in the centre of the transome or are they fitted just off to one side?

Thanks in advance.

[Nos4r2]

Hi Alex

I don't think it's that critical on an SR4. I mounted mine centrally, but Mollers used a bit of offset on his. I never noticed any ill effects from mounting centrally-they bounce around too much for that

[whisper]

Cool, thanks Nos.

[9D280]

My old 30 was dead centre, as has any sailing school SR4 I've used.

I don't thing at that sort of horsepower it's going to make a noticable difference.

[chewy]

Both of mine have been centralish, as Nos said you get thrown all over anyway!

[Max...]

There was a table here for offset but this was for the 5.4 so may be irrelevant anyway?!

http://rib.net/forum/showthread.php?...=offset&page=2

[whisper]

Hi, I just had a measure up and my current searider SR4 has around a 10mm offset. I'll measure my project SR4 at the weekend to see if that is the same.

Do you think its worth contacting Avon?

[Max...]

My 4.7 is offset but not sure how much - the console is offset a lot, always thought this was for carrying a stretcher but this is apparantly not true. Try advanced search for 'offset' in the title.

[whisper]

I spoke to Tony at avon today and he said for the SR4 the following offsets are recomended:

40hp - 1 1/4"
50hp - 1 1/2"

Sounds quite a lot to me?

[Mollers]

Originally Posted by whisper

I spoke to Tony at avon today and he said for the SR4 the following offsets are recomended:

40hp - 1 1/4"
50hp - 1 1/2"

Sounds quite a lot to me?

I gave our's 30mm

[whisper]

Measured my project sr4 today and the last engine was fitted in the centre.

[kev]

mine is also dead center.

[whisper]

I just spoke to Avon technical again just to confirm, they said to fit the outboard 1 1/4” to starboard as this will stop the torque reaction and prevent chine walk