Disk brake conversion

I'm considering purchasing a 73 Commando and wondering what components others have used to fit a modern front disk caliper. I have axial mount Brembo calipers and master cylinder/lever from an Aprilia, but need to know what caliper mounting plate and aftermarket rotor will work. Thank you

You will likely need a custom/homemade caliper bracket for you setup. Also, changing the MC means changing the switchgear on the right side handlebar.
Alternatively there are modern disk brake kits available, some of which keep oem switchgear, from different vendors for Comando.

See Colorado Norton Works or
Forum member Madass140's web page here for kits:

I also recently went through this decision process and opted for the upgrade kit offered by tritonmotorcycleparts (Don Pender). The installation was very straightforward, everything fit beautifully, and you get to keep your existing switch gear.
In use, it has a nice progressive feel with two finger braking, and with a fistful you can lock the front wheel. It has transformed my riding experience. Highly recommend
And Don was very helpful and responsive to emails.

Does Don's upgraded master cylinder use a front brake switch?

Stephen Hill said:

Does Don's upgraded master cylinder use a front brake switch?

Click to expand...

Pretty sure it does as it is derived from a commonly available bike.
Try asking him direct in a PM to madass140.

I thought BruceB could answer this, as he installed one.

Yes, Don's conversion does have a brake light switch

nortonmews said:

Yes, Don's conversion does have a brake light switch

Click to expand...

Hi Stephen, yes Don's brake MC does have a brake switch. As the MC assembly is more compact than the OEM assembly you'll have to pull a bit more cable out from the headlight (if you have enough to spare), plus the spade connectors on the MC switch are of the narrower type, so you will have to replace the female connectors on the harness, or make up a pigtail. Lots of ways to accomplish it, but the main thing is that there is a switch and it's relatively easy to connect into the existing harness.