ludwig said:Do you trust the hydraulics of your car ??montelatici said:Why would you replace a rear drum brake with a disc brake? That's some more hydraulics to go bad in time. Do you actually use the rear brake outside of holding the bike on an incline? I use it a bit when I race to adjust entry into corners sometimes when I am off a tad, but I never use it on the street above 30 MPH and rarely below 30 MPH, it's dangerous.
The original rear drum +hub is a huge lump of unsprung weight and unreliable :
sometimes it can lock up the rear wheel , and the next time it is non existent .
Each time you adjust the chain (and don't tell me about centering ) it is different .
Hot or cold , wet or dry .. always different , and THAT is dangerous .
Me likes to know what's going to happen when I push that brake pedal .
I have cars and bikes with drums and disks , and I like disk better .
montelatici said:---28. Motorcycle riders in these accidents showed significant collision avoidance problems. Most riders would overbrake and skid the rear wheel, and underbrake the front wheel greatly reducing collision avoidance deceleration. The ability to countersteer and swerve was essentially absent. ---
The Hurt Report
As promised I got out in the garage and snapped a few shots. However, I didn't roll the bike out as it is blocked in by a few others and my drive is still ice and snow covered.Very nice and clean, Ron. Do you have a pix of the brake lever/ master cylinder too?
Don
montelatici said:As many have indicated using the rear brake on the street is not really the smart thing to do in the first place, and the rear drum on the Commando is more than sufficient for what one should do with a rear brake anyway. Plus, a correctly set up drum is just as consistent as a disk brake, if fact, some racers stayed away from disks because they enjoyed the consistency of the campagnolo 4 leading shoe brakes most were using in GP.
I find it hilarious that someone would be concerned about "un-sprung" weight on a 30 year old Commando, but really, how much of a weight difference is there anyway.
montelatici said:Well, to point out the use of the rear brake as a cause, after the inexperience cause, which I would think is intuitive, means something.
But the point is, do you really think that converting a perfectly good rear drum to a disk system on a pre Mark III is a wise way to spend one's time and money on a Commando compared to a belt drive, a head job, an upgraded front disk brake system, Mark III isos,etc. That's my point. Look I have a Mark III with a rear disk, so anything I say has nothing to do with what I have/use.
montelatici said:But the point is, do you really think that converting a perfectly good rear drum
montelatici said:a head job
montelatici said:an upgraded front disk brake system
montelatici said:Mark III isos,
How does the cable motion actuate the master cylinder plunger? Hard to tell from those shots.
Did you post pics of the disc and caliper/mounting previously?