Primary chaincase disaster

pictures (or stories) of hideous injuries sustained by your ariel
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Holder of a Golden Anorak
Holder of a Golden Anorak
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Re: Primary chaincase disaster

Postby paul.jameson » Sun Apr 14, 2019 8:54 pm

You have a good point on the re-manufacture. Although the numbers of 1936-38 singles primary case outer sales may be low, the extremely similarly shaped Square Four primary case outer is also in short supply and probably rather more demand. The singles outer is of course rather longer than the Square Four version but the two cases were obviously designed to be as alike as was possible.
Paul Jameson
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roland robinson
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Re: Primary chaincase disaster

Postby roland robinson » Sun Apr 14, 2019 10:45 pm

A pattern is already in existence for the square four primary outer case.

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Re: Primary chaincase disaster

Postby Dave.Barkshire » Mon Apr 15, 2019 9:25 am

I did email Roger Gwynn and he sent me the following reply...

Niether Draganfly not the club have any plans to get these made at the moment but it is something that perhaps we should be looking at. nPattern making can now be done for about £500 by laser scanning and 3d printing. The casting is not expensive, perhaps £30 but machining is still not cheap, perhaps £70 - £100 each, based on a qty of 10. Higher quantity of course = reduced costs. Primary cases for Slopers have been made in recent years by at least 4 parties, so we ought to be able to make some of the more common ones. Presumably the inners are required as well. Doug Walker has made a pattern and a prototype casting for the 1937-58 SQ4 case but I don’t have any costings for that. Really it needs someone desperate enough to pick up the ball and run with it…..

I seem to remember that there was a list of candidate re-manufacture projects in the club, does anyone know who keeps this list?
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Re: Primary chaincase disaster

Postby volker.halbach » Mon Apr 15, 2019 5:54 pm

Count me in. I have been looking for an outer cover without any success and found only later covers.

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