SOHC.co.uk Forums > CB500/550

Twin Disks

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Darkness:
A few questions about going for double disk brakes on the front wheel:

1.  Does an early Goldwing speedo drive just bolt to the hub when the second disk is in place?

2.  Do you know of anyone who can drill holes in disks?

3.  Can you use the same m/c or does the lever travel get huge?

4.  Where do you get longer sholdered bolts to hold both disks to the hub?

Oh, and is it worth the time, cost and effort?

K2-K6:
My experience was with a 750 K2 so you'll have to judge for yourself the relevance.

With a twin setup using standard parts to match original they were quite potent and would easily howl the front tyre so definitely much more effective than a single, also very good with a passenger/extra kilos.

Mine used the standard master and rubber hoses and had no problems with travel. It makes for a fairly light lever load (for the time) but is much more in keeping with what we are used to now with modern brakes so the ratios seem to stack up ok and I would guess they'd be considered normal if designed right now.

The discs are not too hard to machine if you have the right kit, but the holes are really neat if something like spark erosion is used and look much more like original factory spec.

Bryanj:
(1) NO

(2) Sorry No

(3) Yes but an early goldwing one is better

(4) Any decent bolt supplier Just make sure they are HT

(5)Depends on how fast you need to stop!

SteveD CB500K0:
Take a look at Ben's article on twin disc conversion here

Darkness:
Thanks for the answers Guys:  looks like a little project coming on.......

The link is particularly clear about what is entailed.

I used to think the Honda hydraulic disk was OK provided it wasn't too cold and wet, but I've kind of got used to twin Brembo Goldlines these days!

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