And what about just having the caliper on the front of the uni instead of at the back ?
The caliper would be in the correct side and still proper side up !
Also wrong direction of braking force. It would push the caliper away from the frame instead of against the frame.
Edit:
For this, look also at this thread: http://unicyclist.com/forums/showthread.php?p=1660740#post1660740
Right, I always forgotâŚ
But⌠(time for another ugly paint drawing) âŚwhat if the Oracle hub is mounted with the disk on the same side as the KH tab ? Wouldnât the PM adapter work on either side of the frame tab ? (after all the bolts do not care about the way they are installed and the PM adapter is threaded all the way thruâŚ)
Then you would have to mount the caliper upside down, so that its mounting holes are on the frame side of the rotor. But I donât know how well calipers withstand forces in the opposite direction theyâre designed for. Personally I wouldnât try it, but it could possibly work. Has anybody done this so far?
Some calipers work with the disk spinning the opposite way and others donât. I think the biggest factor is how the pad is held in place. Some brakes would eject the pad or jam if they get a lot of backwards pressure. There are some trikes and custom dual disk bikes that run one of their front brakes âbackwardsâ, so it has been done, Iâm just not sure about on unicycles.
All that aside, I donât think you can use the tab on the frame that way anyway. The mounting surface needs to be nearly centered over the bearing and the thickness of the tab would put the caliper way too far inboard without some pretty substantial modifications. If you want an inboard disk I would just get an adapter, or if you are dead set against adapters get another tab welded on the other side of your frame.
Not dead-set. It was more a âwhat ifâ since I like the idea of inboard and the idea of welded tabs. Outboard has been fine so far too.
Non-conventional caliper mount position
Ok, I guess this would count, I have a Coda caliper operating in the opposite position it was originally intended. Dont know how to link this. Pictures @Schlumph hubs general discussion, page101, post #1507 and with over a year of riding this way, no problems with the way it brakes or with the caliper. I had to do it this side for clearance of the torque arm on older schlumph hubs.
How about those bike trial guys? They have brake forces also in backward directions. I know Hope is doing a special trial brake however the attachment is still PM:
So I guess the trial bikes do not have special tabs on the frame.
Picture link
Thanks Vookash
Reversing the frame and riding it back to front seemed like the lesser of 2-evils, until I noticed that the Magura brake mounts would be on the front of the fork legs.
The slot for the seat post clamp could be hidden by tape or a sleeve, but those mounts for rim brakes are going to be ugly at the front in full view.
Reversing the frame doesnât really accomplish anything, anyway. The brake would still have to be mounted upside down or something.
Iâve been thinking through the same things because I would like to replace my old 26" Oracle frame with something that has proper disc tabs, and a little more clearance. The KH just doesnât make sense. What alternatives are there? A 27.5" QX frame? Or Mad4One, which is what Iâm leaning towards.
The new Mad 4 One frames Iâve seen recently are really nice!
Last M4O frames have both disc tab for inner and outer setting
Brake adapter forward
I have tought About it And I think it wouldnt work, I Will try it in week 
but you Will have to have brake upside Down, which is pretty weird;)
The newer Oracle frames have welded caliper mounts and (I believe) more tyre clearance then the original ones. Available in 26 or 27.5 if you want more vertical clearance. Might be tricky to find in your part of the world thoughâŚ
Linky: http://www.unicycle.uk.com/unicycle-parts/frames/frames/nimbus-oracle-disc-unicycle-frame.html
Edit: Just noticed that the 27.5 frame isnât listed in that link. Might not be available separately yet I guess.
You canât flip it over. And even if you could, the disk tab isnât at the same distance from the hub if itâs an internal or external setup.
The tab has to be on the back, left side of the disk. Running it any other way will put pressure in directions itâs not meant to have. Itâll work, but it might end up damaging components faster.
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