Hey great post - thanks for the pics and info!
I have been looking (and looking, and looking) for a way to improve braking power on my bike, and you may have found the solution!
Here is a pic of my bike, for reference:
Just in case the pic does not post, here is the link:
The bike weighs over 100 lbs, and I weigh around 250 lbs. Top speed (although I don't spend a lot of time there) is about 65 mph.
Right now I have a single 203mm disk with 8 piston Gatorbrake on the front, and it is not enough. It works, but takes a MUCH harder pull on the lever than I would like, even at lower speeds.
I have the same forks you do, DMN USD-8, except mine have IS caliper mounts instead of PM on both sides.
Do you know if this can be changed? Can I purchase the PM ends and swap them out for the IS ends? At least that might provide more options...
If so (I will check directly with DNM), I have some questions for you...
1. Now that you have it all put together, how is the braking power. compared to a single disk?
2. What is your bike / rider weight, and speed of your bike?
3. Do you have any interest or willingness at all, to fabricate another RH caliper mount, and hydraulic splitter? If so, what would you charge?
4. Can you please provide a link to the hydraulic master cylinders you purchased to put this all together?
5. I believe you said at one point, you wouldn't bother doing it again...so my question for you, is what brake system would YOU choose if you were me? Theoretically, my existing Gatorbrake should be about the same (more or less) power as any other 203mm single disk system out there...I don't mind spending $$ to fix this problem, BUT, I am very reluctant to spend hundreds of $$ on a completely new system I haven't tried, only to find it is more or less the same as what I already have.
ANY thoughts or suggestions you can provide, would be MUCH appreciated!