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twin disc

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Pauarc:
How it looks fitted

Arch stanton:
I had a few squeaks and things. But has improved with pads bedding in.
I use a GL1000 master cylinder. Works perfectly.

Pauarc:
That’s good to know I may have a look at the gl1000

allankelly1:
An interesting point of note is for the Yamaha  RDLC the 250 single disc is fitted with a 1/2” Master cylinder and the 350 twin disc a 5/8 M/C but for better feel and less wooden brakes it’s common practice to swap the 5/8 unit to the 1/2 unit

Yes you get slightly more lever movement due to the reduced swept volume of the master cylinder with the smaller bore but the braking is much less wooden

Incidentally for my RD I am running a 14mm M/C but also have two four pot callipers too and floating discs so much better than the original 1 pot sliding caliper per side acting on a solid disc



And on my CB400F twin disc conversion even though I have a extra caliper I have kept the original M/C and not needed to increase my M/C bore size to allow for the extra caliper



Best wishes Al




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sprinta:
I would agree with the above post. I still have the original master cylinder on my CB750K2 that I did a twin disc conversion on and it is absolutely fine giving more 'feel' to the brake lever and not the solid wooden feel that you very often get with the larger bore master cylinder.

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