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D1 Rigid Frame Modifications
Otley, West Yorkshire
Top Gear User
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Forum Posts: 484
Member Since:
December 6, 2016
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July 14, 2019 - 7:11 am
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I have had a lot of trouble over the last couple of years trying to get my 1950 D1 roadworthy. All the problems have been related to the rear of the bike.

Comments over that period from members are just now leading me to believe that the frame I thought was a standard D1 rigid may have had the seat and chain stays moved apart to accommodate a fatter rear tyre. Added to this when I first got the bike there was a 'mystery' component- seemingly a spacer on the rear spindle. As no one knew what it was I put it aside. Just recently I bought an old D1 wheel (incidentally which had a fat Trials/Scrambler tyre fitted) to replace my original wheel 20190713_122321_resized1.jpg20190713_122650_resized.jpgRear-frame-alignment.jpgand noticed it had a very similar 'mystery' component. This component does not appear in any parts catalogues that I can find.

Given this component may be a 'Trials Mod' I was wondering if anyone in this thread recognised it- I really hope so.

I have included an image of the component- its the one which is threaded onto the brake side of the spindle and has two flanges. It fits between the outside of the brakeplate and the frame. 

For good measure Ive also included a shot of the rear of the frame so you can assess if the frame has been widened and a shot of the speedo side with another clearly non standard component- a washer with a small piece of steel braised onto it (why?

Fingers crossed someone can help.

Second Gear User
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May 29, 2019
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November 6, 2019 - 9:46 pm
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I have got a 53 d1 trials bike that my dad built a few years ago,  I'm sure I've seen the same spacer on the rear spindle .

I know he altered the rear of the frame to get clearance so maybe it is a proper spacer , I'll have a proper look when I can 

The other side I can only think the tab locates in the frame slot so it doesn't spin round ?

Otley, West Yorkshire
Top Gear User
Club Member
Forum Posts: 484
Member Since:
December 6, 2016
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November 6, 2019 - 10:45 pm
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Thanks for your post. No one else has been able to throw any light on this spacer so anything you can add would be great.

Look forward to hearing from you.



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