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D14 Supreme chainguard extension piece
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350biker
United Kingdom
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May 7, 2021 - 12:23 pm
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Help - can anyone tell me what the chainguard extension extension piece bolts to please.

Thanks for any help you can offer. 

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sunny
Norfolk
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May 7, 2021 - 4:16 pm
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plate  90/ 7735   bolts  on to the  brake  & rear foot  reast  plate  the  bolt  is  a small  one  like   a  2 BA   

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stubaker58
Sunny Felixstowe
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May 7, 2021 - 8:12 pm
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Sunny’s right. The hole matches up to the footrest mounting bracket I.e. the hole goes to the bottom.  The top of the extension piece, with the cleft (formed by the welded on addition) fits over the lower edge of the main chain guard.  The curved edge should then follow the rear end of the crank cases.

It’s easier in practice than to describe it!

“There’s nothing new under the sun”.

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350biker
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May 8, 2021 - 9:03 pm
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Thanks for the response guys but am still perplexed. There does not appear to be a hole in the footrest bracket other than the one the pedal return spring fits into. Also there is no welded on extension, there is just a pressed part which kicks out with the small hole in it. This matches the picture in the D14 Supreme parts book. I can see from the general shape how it is supposed to go and I will take the brake pedal off to get a better look. A photo of one in place might be useful, I suspect most of them were taken off and not refitted, just thought I would get one for completeness of a renovation! (Bit like the complete battery carrier which wouldn't take the modern battery I had fitted!)

The bike is a 1968 D14 rolling chassis from which the 4 speed engine had long gone (maybe for a Drayton Trials Bantam!) and I have fitted a D10 engine. 

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mikef
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May 9, 2021 - 8:02 am
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For some reason I can't upload a picture. Not sure why.
From memory the brake pedal return spring does not go into a hole but I don't remember exactly how it fits.
I think that the return spring could be fitted incorrectly and is using the hole for the chainguard extension.

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350biker
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May 9, 2021 - 2:26 pm
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Many thanks MikeF, that makes total sense now. I did think that the way the spring end "fitted" into the hole did not look like a good piece of engineering! Will have to look to see what is supposed to stop the spring now.

Thanks again, the Forum comes up trumps time after time.

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350biker
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May 9, 2021 - 2:33 pm
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MikeF - just had a look in daylight at the way the pedal return spring should be fitted. I think the spring end should go under the brake pedal stop and not over it with the end in the hole as I have it! Dohh!

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mikef
Chatham Kent
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May 9, 2021 - 2:38 pm
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Well, I can confirm that the return spring does not go through any hole. The hooked end part of the spring goes on the brake pedal and it looks as if the non hooked end bears on the stop peg on the pedal mounting plate.
I have tried to upload a picture but just can't do it. It's a JPEG about 350Kb but it errors on upload. I've done it before, something strange going on.
Mike.

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mike p5xbx
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May 9, 2021 - 4:46 pm
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the brake return spring fits around the pedal and under the bolt head below the hole for the chain guard extension plate
Photo upload is now Broken, see if this works doh

dXfcCu.jpg
or
** Please log in to view **

D? - D10- D14 Bantams 350 AJS -500 Triumph http://bsanotru.....lfire.com/

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mikef
Chatham Kent
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May 9, 2021 - 4:59 pm
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Yes Mike p5xbx that works fine. How did you do that?

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mike p5xbx
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May 9, 2021 - 5:43 pm
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mikef said
How did you do that?  

Magic smile
actually I used (www) VGY.me as host for the photo

D? - D10- D14 Bantams 350 AJS -500 Triumph http://bsanotru.....lfire.com/

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350biker
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May 31, 2021 - 9:05 pm
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Thats great folks. Thanks very much for your efforts and the advice.

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