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Twin disc caliper modification?
sprinta:
I am considering doing a twin disc conversion on my 73 CB750 K2 and currently looking at all the parts I would require to do the modification.
On looking at the caliper whilst it it is straightforward to fit to the RH side they are handed in the sense that the nipple will now be closer to the fork tube and the hydraulic pipe now furthest away as the seats for the nipple and hydraulic pipe are different with the nipple using an inverse cone shape and the pipe a raised cone seat.
On looking at the relevant parts book page, see attached, there is an unnumbered part that looks to be some sort of olive insert above the pipe connection position.
Can anybody advise if this a push in seat that can be removed or if there is a relatively simple process so the nipple and hydraulic can be fitted as a mirror image of the LH side with the hydraulic pipe close to the fork leg?
Trigger:
Yes, it is a press fit. You will destroy the old one getting it out. I think Yamiya do the caliper and spacers for the 750 conversion ;)
sprinta:
--- Quote from: Trigger on February 10, 2020, 07:28:35 PM ---Yes, it is a press fit. You will destroy the old one getting it out. I think Yamiya do the caliper and spacers for the 750 conversion ;)
--- End quote ---
Thanks for the reply.
Trigger:
Caliper and the arm for the right side >>> https://www.yamiya750.com/index.php?main_page=product_info&cPath=246_251_184_86&products_id=2468
71 V12:
Hi Sprinta,
I am in the process of gathering the parts to add a right disc to my 750 K4. A second hand Caliper and arm cost me £50 and a disc £20. The Yamiya Caliper and arm is £350 ish plus shipping and duties and looks like K0/1 type to me.
There is a olive of some type in the Caliper in the pipe location. I have removed it by threading it and pulling it out with a screw. I am planning to make brake pipe with a bubble flare and a long M10 tube nut. Hopefully this will seal.
The other issue I can see is securing the steel brake pipe to flexible to the mudguard. The left side has a correctly bent wire welded to the mudguard. Not sure yet what to do for the right side. Maybe a K0/1 type bracket can be adapted.
The conversion is far from straight forward. Where are you at with the job?
Cheers,
Kevin
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