Copyright WWW.DBBP.COM | updated 8-May-200423

 



 
 
To mount the reaction rod I drilled and tapped the rear leg, the hole is the same distance from the pivot as the distance between front axle and brakeplate mount. (creating a parallelogram). I machined a 10 mm bushing that is pressed into the leg (with Loctite), so the shear forces are not on the threads of the hex screw.


Here you can see the brakeplate is anchored to the rear leg and not to the rockers.

 

To allow the brakeplate to be able to rotate after tightening the axle, I needed to machine it and fit a bronze bushing. My lathe was not big enough to hold the brakeplate so I enlisted the help of Aad who machined it on the very big lathe at Metaalbewerking Heemskerk. (same last name but not related)

Almost ready, one last thing, the hexscrews on the rear legs were 2 different sizes, and I could not find replacements because of the Whitworth Fine threads. These would be right in your view when riding the bike, and that would really annoy me if it was mine!

 
 
I drilled out both legs and tapped them with M16 thread. I used 2 M16 bolts and drilled and tapped these with M12 thread, making inserts of them. Then I hand polished some stainless steel hex screws, assembled the forks and the job was finished!
 
 
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