Shoebacca78 - Yes, at 3 o'clock it is unarmed because the sensor is not blocked, and it can be mounted there and left there safely when not using it, or during riding. I typically take the lock off of the bracket and attach it onto my rear disc rotor, but the 6 o'clock mounting where it is armed is just a convenient option incase you're parked around alot of bikes, but still want some sort of alarm on incase it is knocked over or hit.
Mecevans - Exactly! It's a good 3LB's or so? Whatever it weighs, it's big enough and heavy enough to not want in my pocket.
rkwfxd - I'm sure it can be done, there are universal helmet locks on eBay and amazon, different types where you can bolt on or clamp on bars. Just a matter of finding the right spot to drill a hole to secure the helmet lock down.
This aluminum C section is somewhere in my garage, some local scooter shops when I was riding the bike around were checking it out too, and got my blessings to take this idea and make it a nice part for people to buy.
I removed the reflector on the rear fender and turns out it leaves a hole just perfect for the disk lock.
I haven't had to chance to ride it with the lock mounted there. It'll probably rattle when you ride it. I might add some foam to take up the slack, but so far it seems like a pretty easy ghetto option. lol.
It won't work as well as Tegboi's custom mount and you can't arm the system there, but no fabrication required.