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Classic Bike Trackdays

Splitting SDR cases

 
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thump566



Joined: 28 Jun 2023
Posts: 23
Location: West London

PostPosted: Tue Aug 15, 2023 7:49 pm    Post subject: Splitting SDR cases Reply with quote

Simple question hopefully.

Before I attempt to separate the cases, should the gearbox be in any particular gear in order to enable movement when splitting the cases?

I'm told some bikes need to be in a particular gear in order for the cases to separate and also avoid damage to the gearbox.
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thump566



Joined: 28 Jun 2023
Posts: 23
Location: West London

PostPosted: Tue Sep 05, 2023 6:11 pm    Post subject: Reply with quote

Ok, the cases are now apart so hopefully the gear selection was not a pre-requisite.
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SP_BOTT



Joined: 12 Oct 2007
Posts: 176
Location: Norfolk

PostPosted: Wed Sep 06, 2023 6:44 am    Post subject: Reply with quote

Good effort, I'd guess it was in neutral before splitting?

Be good to see some pics, or even a resto thread etc, help get a bit more traffic on the forum.
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thump566



Joined: 28 Jun 2023
Posts: 23
Location: West London

PostPosted: Mon Sep 18, 2023 8:43 pm    Post subject: Reply with quote

SP_BOTT wrote:
Good effort, I'd guess it was in neutral before splitting?

Be good to see some pics, or even a resto thread etc, help get a bit more traffic on the forum.


Pretty sure it was in neutral, yes.

I was told it had seized when I bought it but assumed it was probably just a case of top end removal, hone/re-bore, possible piston/rings/small-end bearing then re-assembly.

In reality its somewhat more of a horror story. I already intended to create a project thread as suggested by another forum member once I have looked into the preferred method of attaching images.

The project was not expected to be a quick turnaround due to finding workshop time but in the meantime I will be attempting to source the neccessary rebuild items.
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James P



Joined: 31 Mar 2013
Posts: 184
Location: Sydney, Australia

PostPosted: Fri Oct 20, 2023 11:08 am    Post subject: Reply with quote

SP_BOTT wrote:
Good effort, I'd guess it was in neutral before splitting?


I think mine was in neutral when disassembled and reassembled, but I don't think it makes any difference if any particular gear is selected.

Regards,
James
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thump566



Joined: 28 Jun 2023
Posts: 23
Location: West London

PostPosted: Sun Feb 11, 2024 8:42 am    Post subject: Reply with quote

James P wrote:
SP_BOTT wrote:
Good effort, I'd guess it was in neutral before splitting?


I think mine was in neutral when disassembled and reassembled, but I don't think it makes any difference if any particular gear is selected.

Regards,
James


Many Thanks James.

Cases are currently apart whilst the crankshaft is at the machine shop for evaluation.

https://i.ibb.co/B3HkJt4/20230830-165534.jpg
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James P



Joined: 31 Mar 2013
Posts: 184
Location: Sydney, Australia

PostPosted: Sun Feb 18, 2024 12:10 am    Post subject: Reply with quote

thump566 wrote:

Cases are currently apart whilst the crankshaft is at the machine shop for evaluation.

https://i.ibb.co/B3HkJt4/20230830-165534.jpg


Hopefully those crank webs should clean up OK Ron - let us know how it goes.

Regards,
James
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