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Old 27 January 2015, 09:34   #11
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Image 5 - The engine

Image 6 - The engine bay

Image 7 - One in T'other

Image 8 - The joint I need to make
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Old 27 January 2015, 13:58   #12
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Given that you already have one flange cant you machine up an identical one, and make the middle bit out of a piece of conveyor belt?
That would look like original maybe,
I used to have a few rag joints hanging around like that, off ww2 generators with villiers engines. they went in the skip a long time ago though.
I seem to recall some of these joints had steel centres with small rubber bushes for the pins to locate in.

you could just buy one of these though

5/8" L075 Flexible 3-Piece L-Jaw Coupling Coupler Set & Buna-N NBR Rubber Spider | eBay
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Old 27 January 2015, 14:08   #13
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https://sdp-si.com/eStore/Catalog/Group/984

this place has them in the UK.
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Old 27 January 2015, 14:40   #14
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DP

Unfortunately the flange on the output shaft is one I found locally and doesn't actually fit very well.
I brought it for a couple of quid as a 5/8 bore, and thought I'd been had when it had too bigger hole.

However I've had a better chance to have a measure up this afternoon and have now realised the propshaft is 5/8in, but the output shaft on the engine is 19/32in.

I could machine up two flanges of course, and either incorporate a small doughnut or something along the lines of your ebay link, but I'm really tempted to try some -10 Hydraulic hose which has a bore of 15.2mm or 5/8in with 4 clamps. It certainly looks and sounds like the easy/lazy way out.

I'll have a think about it, as I still need to source or machine up a stuffing box/shaft seal because I can't find one smaller than 1in at the moment.

If I have to sleeve the propshaft for that it will effect what I do with the coupling too.

All good fun, my trouble is having to go to work gets in the way.

Nasher.
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Old 27 January 2015, 15:53   #15
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I think a hydraulic hose will do the job, especially with a few Mikalor type clamps, After all there cant be much torque there if you've only got a few HP.
assuming you have your power at 3000rpm that's only 8Nm
it would certainly get you up an running.

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Old 27 January 2015, 19:18   #16
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What is that on the joint in the original pic? Is it a bit of hose and jubilee clips being used as a grease seal and 2 nuts to push grease in?
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Old 28 January 2015, 04:12   #17
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It looks like the stuffing box is held onto the stern-tube with a short length of hose and a few jubilee clips doesn't it. and as you say there's the standard two bolt flange on the stuffing box to compress the Hemp/Horse hair and grease. The rag joint is just visible under the tank.
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