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Alloy Harris F1 - 1988...


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40 minutes ago, Fazz711 said:

Looks like nice machine work. 

The alloy swing-arm spindle locator-plates(?) were made when Gav @ GIA converted the old concentric (eccentric?!) chain adjusters for a more conventional set-up.
 

The guys that machined the new spindle (see earlier post) matched the end-plate to Gav’s work (y)

 

p.s. I need to find someone who can make a rear disc to match that in the picture - the old one went when I sold the old Dymag’s :(...

A076CF2D-6C39-4E73-AA78-E421385641A5.jpeg

E9AB895B-3156-405F-8890-1F3D7D93C640.jpeg

Edited by flatline
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4 hours ago, flatline said:

 

 

p.s. I need to find someone who can make a rear disc to match that in the picture - the old one went when I sold the old Dymag’s :(...

A076CF2D-6C39-4E73-AA78-E421385641A5.jpeg

 

That looks like the disc that I've got on my Astralites. Looks a bit shit. So...

22697501_Hubassy..thumb.png.4a802b029e7c1eb1f8eec7a7c69999aa.png

650131317_discbell.thumb.png.10967acc8d806c166cc023682ccca455.png

581016272_reardisc.thumb.png.b4cf17ffd45c1cede531ed86c6fb5298.png

IMG-20210421-WA0014.thumb.jpg.5aefc870cb424a21236cf2576e0951b9.jpg

 

I've had the disc itself made, I think the the manufacturer made 2. The bell and bobbins are in progess.

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5 hours ago, flatline said:

The alloy swing-arm spindle locator-plates(?) were made when Gav @ GIA converted the old concentric (eccentric?!) chain adjusters for a more conventional set-up.
 

The guys that machined the new spindle (see earlier post) matched the end-plate to Gav’s work (y)

 

p.s. I need to find someone who can make a rear disc to match that in the picture - the old one went when I sold the old Dymag’s :(...

A076CF2D-6C39-4E73-AA78-E421385641A5.jpeg

E9AB895B-3156-405F-8890-1F3D7D93C640.jpeg

Dymag are back in business. Maybe they have still the option to make a 'new old style' disc to match old wheels ? worth an ask ??

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  • 4 weeks later...
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Update… ISR made a one-off rear disc for me… it took many weeks to get the BCD (Bolt Centre Diameter) for the unusual 7-bolt fitting from Dymag… multiple e-mails & ‘phone calls… 

measured everything multiple times, and sweated over the offset as it had to be pretty much within 0.1 - 0.2mm to fit… Happy that it all fits as required :banana:

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3744C0F0-7835-4AEB-8DA5-0D31FE4D4A89.jpeg

3AB76876-D571-499D-A24C-0317746DC057.jpeg

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Seven bolts for a rear disc is a strange fitment, even for race wheels. Are the wheels NOS? I ask as they are the older Dymag 7 spoke design, that dont have a hole at the base of each spoke. These were available in either magnesium or aluminium alloy, whereas the newer ones are aluminium only. I am aware of these mind-numbingly boring details as I have a similar set from a ZX10R race bike waiting to go on my next project, like that's going to happen this decade.....

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