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CR750 replica build

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taysidedragon:
Almost everything on a race bike is lockwired Tim.

Rozabikes Tim:
Low level club racing I did - sump plug, oil filter housing bolt, dip stick a few other bits. Whatever sure different with the high level stuff with the CR's,  just adds to the art in any case!

JamesH:

--- Quote from: CR21 on February 21, 2025, 05:46:57 PM ---Hi chaps,

Thanks for the kind words!

Oddjob - yes I remember watching that video - very cool.

Rear brake cable with works replica hardware complete:



Cheers,
CR21

--- End quote ---
Stunning as always Scott. How did you replicate the crimp finish on the cable ferrule? Did you have to make a specific crimp tool?


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CR21:
Hi Tim,

Yes for lockwire, many of the '970' parts for the CR had the provision for lockwiring, a must for scutineering in some places.

Thanks James - I was not brave enough to do the crimping so a local cable manufacturer helped out with that  ;)

Cheers,
CR21

CR21:
Another piece of the jigsaw for this build is the oil cooler, located underneath the headstock.

A extract from the ACU homologation files shows quite a small 3 core cooler:



I was able to borrow an original cooler which was super handy to use as a reference for the sizing and details, shown here at the back alongside some potential donor coolers. The temptation to use/adapt these is pretty high, however neither fit correctly which is a shame.



Unfortunately the donors are very close in style but are not suitable size wise.

Modelled up in CAD, along with the bracket which attaches to the original horn mount:



Machined nuts:




Currenly on the 3D printer for a fit check, I will attach the machined nuts and bracket to check against the frame



The plan is to engage with a specialist manufacturer to help out with this part, they will work to my 3D drawings once I am happy with the fitment - a tricky part to get right!


Also an epic shot of Dick Mann coming over the finish line at Daytona in 1970, this project is taking a while but I must keep reminding myself - the devil is in the details!



Cheers
CR21

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