A lot of mountain bikes and now even road bikes (flat bar or specialty) come with disc brakes, from the factory. I even have an Iron Horse entry level bike that has disc tabs on the frame, though it came with v-brakes.
I have not seen any factory bikes that had the disc tab on the right side. That is why I asked if you had to weld one (or if you might have used some after-market kit/part, or a custom/specialty frame).
If you are using the disc hub to hold a motor cog, I am assuming (but could be wrong) that you are running the motor cog on the left side, and the disc brake rotor on the right.
Originally Posted by Goat Herder
For folks wanting powerful stopping power how is it you think its on the wrong side? Mine has worked flawlessly.