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Propshaft coupling for Blaxland-Chapm...

Old Marine Engine » Blaxland » Propshaft coupling for Blaxland-Chapman 5/7 Twin « Previous Next »

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Sean Orr
Member
Username: thewilliamdenovan

Post Number: 5
Registered: 09-2013
Posted on Wednesday, May 28, 2014 - 03:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hey all

The coupling that connects the prop-shaft to the gearbox on my 5/7 has failed.

Does anyone know where I can find a replacement?

Thanks
Sean
D'oh
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Mark S
Senior Member
Username: marks

Post Number: 159
Registered: 03-2002
Posted on Tuesday, June 03, 2014 - 05:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Sean,

Your best bets are to find somebody with lot's of spares. Sorry I don't have any Blaxlands.

Or get you local machinist to make one up.

When you have the replacement check the shaft alignment.
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Andrew Munns
Senior Member
Username: johnoxley

Post Number: 120
Registered: 04-2010
Posted on Tuesday, June 03, 2014 - 07:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Depends on your skills or those of your contacts.
Options include -
Locate original 'spare'.
Pattern + casting + machining (preferred).
Turn from steel or cast iron bar (preferred).
Weld disc to boss and machine (OK).
Force fit bored flange to turned boss with scotch key (not preferred).
In all cases, remind machinist to bore boss and face flange on one setting and to provide a generous fillet.
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Todd Vidgen
Senior Member
Username: todd_vidgen

Post Number: 257
Registered: 03-2008
Posted on Thursday, June 26, 2014 - 11:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

sorry to drop on your thread Sean.
Misalignment will cause this type of damage,make sure every thing is perfectly aligned (+ .003 max)
Andy I have being trying to email you ,but something is not quite right in my pc.
Can you ring me?
Cheers Todd.
PS Sean what size is your shaft,I have a couple of couplings
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Bob Abela
Visitor
Posted on Saturday, July 05, 2014 - 08:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Sean
Are you still looking for that part?

I have one attached to a 3/4 s/steel Shaft, It may be frozen on but will be OK if the shaft is long enough.

Where do you live?

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