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Old 24 November 2013, 13:45   #1
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Standard or short shaft on Avon 4m

Hi

I have an Avon 4m with a Mariner 30efi. I would like to upgrade and have seen a secondhand 40hp but with standard shaft. problem is I don't know what length mine is and boat is a fair drive away.

Dont mind whether I have Mariner, Mercury, Honda or Yamaha.

Anyone able to tell me whether I need standard or long shaft for this RIB.

Thanks
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Old 24 November 2013, 13:58   #2
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I don't think Avon made anything at 4m as a rib with short/std shaft.

I think you'll need a long shaft...
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Old 24 November 2013, 15:01   #3
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Bit of potential confusion here. There is no standard standard I see people referring to both long and short shaft as standard.

Short Shaft - 15" transom, actual engines may be 16-18"
Long Shaft - 20" Transom, engines a touch more
Extra Long - 25" Transom.

The SR needs Long Shaft but the seller MAY be calling this Standard Shaft so worth a look.
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Old 24 November 2013, 15:12   #4
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I have a 40 Mariner Twin at Bristol. Was going to collect in about 10 days and prep for sale. Let me know if your interested.
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Old 24 November 2013, 15:18   #5
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doesn't it also depend on the SR4 transom being original, if it's straight across it should be the "long" shaft your looking for, but if the transom has been messed about with an shortened then you could be looking at a "short" shaft
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Old 24 November 2013, 15:22   #6
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Quote:
Originally Posted by Chris Caton View Post
doesn't it also depend on the SR4 transom being original, if it's straight across it should be the "long" shaft your looking for, but if the transom has been messed about with an shortened then you could be looking at a "short" shaft
And sinking....haha

I 'thought' short and std are mostly the same....long is long is long

As Chris said if it's been hacked about...everything can change.
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Old 24 November 2013, 15:24   #7
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And sinking....haha

I 'thought' short and std are mostly the same....long is long is long

As Chris said if it's been hacked about...everything can change.
yes, forgot about the sinking bit
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Old 24 November 2013, 16:59   #8
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I think pete has a short shaft, Well that what whisper told me!!
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Old 24 November 2013, 17:47   #9
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I think pete has a short shaft, Well that what whisper told me!!
Your wooden spoons getting bigger Matt...

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Old 25 November 2013, 10:48   #10
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There's a new class of transom height between a short 15" and a long 20", it's a 18", named as no man's land as seen on low overboard rescue ribs and surfers shuttles. Measure middle transom to lower keel in straight line to exactly know.

Happy Boating
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