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CB550F Double Disc's

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Bryanj:
Now you say that i remember having to take small amounts out of the disc carrier centre to make rectangular holes for the drive Tangs

Ewan 500 K1:
I suppose a Q for trigger would be ... what kind of front hub do you have ... is it the version with the two flats on it (see photo in my post above) .. or the version without the flats ?

Trigger:
Ewan, I have the same hub as showing in your post.  Oddjob, i was only joking about pulling it in on the disc bolts. You are right, how the hell did he do it without any mods? I think he was telling porkies.

matthewmosse:
I did a twin disk setup on one of my cb550k3's many moons ago, I used comstar front wheel though so no usefull hints off that other than that I think I used a stock master cylinder, worked ok for a commuter, to be honest though I think a single disk works pretty well anyway - I coud lock the front tyre even with a sidecar fitted, the stainless disk was the thing I might change if looking for inprovement, but only during rain as I used to have to lightly apply the front brake all the time in a downpour if I wanted it to work immideately on demand. Once you master the mindset of doing it it was second nature to keep light braking pressure on 200 yards before every bend or blind spot. I do know that my bmw of the same era had the same issue, though less as twin disked and drilled from the factory and for these you could buy pfm performance disks which  being cast iron looked horrid at the mere mention of rain but gave better braking. I had a set but never used them.

Ewan 500 K1:

--- Quote from: trigger6969 on April 22, 2014, 07:50:36 AM ---Ewan, I have the same hub as showing in your post. 

--- End quote ---

Then I think you just need to make the one on the right into the one on the left,
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CMSNL are out of stock of the original part http://www.cmsnl.com/products/retainer-gear-box_44641300000/

Mount the mudguard bracket BETWEEN the fork and the brake pivot arm bracket and you wont need any shiming or shaving. You'll need some goldwing disc bolts. Less sure about the master cylinder , but I had a goldwing one (retangular kind) to hand anyways so used that.

You might also find that the speedo cable rubs off the new disc so will needd to do summat about that.
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