domtyler said:
On my fixie if I stop peddling the back wheel stops, it is also far far lighter than your MTB. I also don't need to think about it or move any muscles to engage the 'rear brake', the millisecond I see any reason to stop I am already slowing down.
There is only any point in being able to lock the wheel anyway, and any rim brake should be able to do that so long as they are in good order. More powerful brakes are just a waste.
Locking your rear wheel actually
decreases your braking power as well as your control.
A bike under full braking power will be using near zero rear brake, as the rear wheel should barely be touching the ground.
Also you cannot just stop pedalling mid stroke, because that is impossible. Also you have to bring to bear much larger, more powerful muscles to stop your pedals turning than you do to pull a brake lever.
I have no doubt that you can stop very quickly DT, as you are a very experienced cyclist, but the rear wheel braking fixie riders go on about is much less efficient than a caliper brake.