to start, mate i dont know anything about the 550/500's, it was just pot luck that i bought the wrong speedo drive plate and it fitted perfectly, i hadnt even pulled the front wheel apart to find out that i had the wrong one!!!... sometimes you get lucky.
there reason that there is so much messing around with a double brake set up on the cb's is because the forks arent a mirror of eack other, at a quik glance they seem the same , but beleave me they are not.
what i have done is file down the large lower mount on the fork leg, little by little, checking with the caliper arm, that the arm is parallel with the disc, you will find that of the 750's, it seems like they are unfinished... like an after thought.. so i filled checked,filed, till the mount had just enough clearance with the fork leg and the swivlel part of the control arm(that the caliper bolts to).
when i first tested the caliper arm onthe fork, the top of the mount was about 30mm away from the fork leg,when touching the main mount!!!!.
NEway once i had the control arm nipped to the fok leg, and the arm when nipped was parrallel( you can just use a straight edge off the disc), went and measured the difference that was left..( remembering i had 33mm at the start).. and it turned out to be just over 1.5mm... so went through my washers with a set of vernia, and found two washers that,were tight, and put them in and tightened them up.
again got the straight edge out, and checked for parallel again... all was great, the arm moved, it was straight,.. oh and i do not recommend using socket head cap screws like i have used... have you ever tried getting a allen key in that gap and getting them tight!!!... us bolts much esier.
right for the return spring,adjuster and lock nut.
the adjuster boss on the folk leg is in a way different spot on the right, to the left.....when i tried to get the adjuster in, i couldnt get the nut on at the right adjustment... so figured if i put it on the back side, i could still use it as a lock nut, and still get my adjustment.
the double banjo is from a set of GSXR1000 calipers i had laying round, and the mastercyl is from a VTR1000F firestorm, i used to have one , and it was really modified.(hence the gsxr calipers and the SP2 master cyl i had on it).. but car driver being who they are, dont need to use indicators, and now i dont have a firestorm, and am still off work after 12 months.... i built the brake set up out of what i had at home, you could probably get a double banjo bolt at you local hydraulics shop, thats where i got my braided lines from... hope this helped..peace
