Originally Posted by
TiHabanero
Certainly can appreciate the concern of a drop out failure or a tube failure. If it fails, ce la vie. The frame and fork alone are 7 pounds. the thing is a tank. If the stays are less than .9mm at the ends, it would surprise me. My guess is they are more likely 1mm. I did give thought to brazing on brake mounts, however in the future I can remove the brake adapter and have a completely stock frame. Not that it matters, but I find something of value in that.
The picture of the Roloff hub and drop out failure looks like the brazed joint failed. Am I seeing that correctly?
The torque arm on the drum is necessary in order for it to work, without it the pads simply spin with the hub when applied. Same principle as a brake arm on a kickback hub.
Photo of the cracked frame, I have no clue if that was a brazing failure or what, just that it was a photo like many others of frame failures I have seen on the internet.
My heavy duty touring bike with the Rohloff hub has reinforcing similar to that shown in the recent post by Inanek, below:
There is no separate torque arm on that Rohloff, it has a square part that fits inside that non-drive side dropout that is extra long and reinforced. This frame came with both a disc mount and also V brake mount, I use V brakes on it.
I obviously did not wipe off the oil leakage very often on this trip. I think my hub has a bad oil seal in it, it has always leaked since the day I bought it.
Photo below shows that square part that goes into the dropout to control torque.
