A heavy vehicle to boot, good luck to the OP and anyone else who removes a front rotor!!

 

well my whole point in asking the "single rotor" question is due to me owning a rigid chop with a single rotor and caliper and so is my dads heritage springer which isnt that much lighter than a RKC

and they both stop well enough for me and yes i do ride her as much as possible
but surely if you convert it to single rotor/caliper and use a much better caliper than a stock HD one then, surely its going to work just as well ?

just wondering
the new street bob comes with a single rotor/caliper and is a much quicker bike than my 06 RKC and stopped fine when i rode one

so if i put a PERFORMANCE MACHINE 4 piston caliper on a single rotor then that should be better than a twin stock HD crap pair of calipers shouldn't it ?

 

You need to change the master cylinder because 2 calipers have different pressure requirements than 1 caliper does. The metering device for that pressure is the master cylinder bore. Harley's that only have a single rotor utilize the 9/16" master cylinder while dual disk bikes require 11/16" master cylinders.

You ca run the stock master cylinder, but the lever is going to feel very hard. I ran my bike like that for a long time. The smaller master cylinder definitely feels/stops better.

Forget all the naysayers. I've ran a single rotor on my RoAd Glide for 5 years. I've toured 2 up and loaded too many times to count. It's just like anything else. You get a feel for how the bikes performs and adjust your riding style to it.

Zach

 

Not sure it would be better. Now if you went 13" rotor and differential bore 6 piston caliper, it might be better.

Nothing wrong with running the PM 4 piston on a single rotor. Go for it.

Zach

 

Your still going to be reducing the swept area ( the area of rotor/pad contact) by 50% so there is still going to be a big decrease in brake performance. yeah a 4 piston caliper should provide slightly better feed back at the lever though than a single 2 piston caliper, but I would say it is unlikely to compensate for removing a rotor. You would need to go to a much larger rotor too similar to what Buell did with using a single giant rotor attached to the rim.

 

nice one Zach and it makes sence now to what you said before after i read it again and i think i going for it. as HD calipers are just plain rubbish and i have to do something about it

going to see how much trouble it would be to fit two PM calipers on one rotor as i have 4 Performance Machine calipers to choose from lol

 

if anyone has a single rotor done and fitted inc Zach

could you post a pic up please so i can see what it looks like please ?

thanks

 

Matt, I can't argue that. My Heratige has "one" rotor and I can stand it up if I want. Good luck bro. To each his own.

 

and how much cleaner and neater does the single rotor look ?

imo it looks a lot better with the big chrome cover on one side on your heritage

ill take a pic of my RKC tomorrow with one caliper on and one rotor if my back is ok to do so and see what you all think then

 

Here's what my new 13" rotor looks like on the wheel. Waiting on the new caliper before I can mount it back up.



Here's the current set up with 11.5" rotor and Jaybrake 6 piston





Zach