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Jubilee light forks

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Jubilee light forks

Posted by robert_spence at May 26. 2017

Hello,

I'm just sorting fitting the yolks to the frame. I have the 2 cups , 2 cones. all ball bearings , shaft and top and bottom nuts. When I fitted the whole lot to the steering head I seem to have a 1/4 inch gap so that the bottom bearings fall out. I know I am missing the top dust cover ( anyone got one? )...but I assume that they are quite thin.

Anyone have any explanations or drawings/photos of why I may have this excess play?

cheers

rob

Re: Jubilee light forks

Posted by patrick_mullen at May 26. 2017

Hello Rob,

Sorry I can't immediately put hands on a picture but you are quite obviously missing two items as well as the dust cover which is part number 21707;  part number 21703 is a spacer and part number 21702 is a 20 thou shim. All three of these items fit above the steering head cone (upper).

Patrick.

Re: Jubilee light forks

Posted by Ulrich Hoffmann at May 26. 2017

Here is a drawing of the fork.

Attachments

Re: Jubilee light forks

Posted by robert_spence at May 30. 2017

Previously patrick_mullen wrote:

Hello Rob,

Sorry I can't immediately put hands on a picture but you are quite obviously missing two items as well as the dust cover which is part number 21707;  part number 21703 is a spacer and part number 21702 is a 20 thou shim. All three of these items fit above the steering head cone (upper).

Patrick.

Thanks Patrick,

I was hoping there was something missing!

I'll have to get in touch with the club spares and see if they are available.

many thanks

rob

Re: Jubilee light forks

Posted by robert_spence at May 30. 2017

Previously Ulrich Hoffmann wrote:

Here is a drawing of the fork.

 

Many thanks Ulrich, great!

Re: Jubilee light forks

Posted by robert_spence at May 31. 2017

Anyone have these parts for sale? any condition ?

Re: Jubilee light forks

Posted by robert_spence at June 16. 2017

Would anyone know the height of part number 21703...ie the spacer above the steering head cone. I have bought a length of spacer to cut down of the right diameter  and it would help if someone could measure the height.

many thanks.

Re: Jubilee light forks

Posted by patrick_mullen at June 17. 2017

Hello Robert,

It's very difficult to take an accurate reading with the forks assembled and I don't have any sophisticated measuring equipment but a best estimate says about 9/16"(or a bit over 1/2" in technical terminology).

At least it gives you a clue but maybe someone else has forks on their bench and can measure properly.

Patrick

Re: Jubilee light forks

Posted by robert_spence at June 19. 2017

Hello Patrick,

At least that gives me a ballpark, many thanks.

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