029446 Spacer - info needed

Information relating to the Matchless G12 or AJS Model 31 650cc twin
mdt-son
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029446 Spacer - info needed

Post by mdt-son »

Gents,

029446 Spacer for support tube (rear mudguard) goes between the schock's top pivot and the mudguard on most roadsters 1963-66/68.
This part seems to be extremely rare. I will have to fabricate some. Anyone have a sample and can make me a dimensioned sketch ?

Cheers,

Knut
Mick D
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Re: 029446 Spacer - info needed

Post by Mick D »

Hi

Norvil list the part if you can't get the dimensions

Regards Mick
mdt-son
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Re: 029446 Spacer - info needed

Post by mdt-son »

Thank you Mick. With your aid I was able to locate the part in their extended parts list. I have received confirmation Norvil will be able to suppply.
Another obstacle to my restoration has been removed!

Thanks again,

Knut
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robcurrie
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Re: 029446 Spacer - info needed

Post by robcurrie »

Knut,

On my circa 1965 bikes, the spacer measures 7/8" outside diameter x 1_5/16" long, centre hole would be the same as the shockabsorber. ( OD 22.3 mm 33 mm long)

Rob C
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Re: 029446 Spacer - info needed

Post by mdt-son »

Thank you Rob.
I will verify the samples received from Norvil M/C using your data. The spacer is somewhat special in that it has an internal recess for the "hat nut" (p/n 016712) that goes through the mudguard.
I may commission a batch of these spacers if the samples received aren't accurately made.

-Knut
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robcurrie
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Re: 029446 Spacer - info needed

Post by robcurrie »

Knut,

I haven't ever removed that spacer, so I didn't know about the recess in the back, I felt what I thought was a weldnut on the inside of the 'guard. I can remove one and give you the sizes.

Rob C
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robcurrie
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Re: 029446 Spacer - info needed

Post by robcurrie »

The spacer has a diameter 17 mm hole drilled in the back 17 mm deep, the bolt hole is diameter 10 mm, the captive nut is diameter 16 mm x 16.8 mm.

Rob C
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Re: 029446 Spacer - info needed

Post by mdt-son »

Wow! i am indebted to you, Rob! Thank you so much.

And I hope this will be of use to others as well, given the scarcity of these parts.

-Knut
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clive
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Re: 029446 Spacer - info needed

Post by clive »

robcurrie wrote:The spacer has a diameter 17 mm hole drilled in the back 17 mm deep, the bolt hole is diameter 10 mm, the captive nut is diameter 16 mm x 16.8 mm.

Rob C
I had not realised we went metric so early! :rofl:
clive
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Re: 029446 Spacer - info needed

Post by robcurrie »

clive wrote:I had not realised we went metric so early! :rofl:
Great Britain adopted the metric system in 1965, which happens to be the year of manufacture of the spacer I measured, so at least AMC made a start! ;)

Rob C
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