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Old 2016-12-13, 12:24 PM   #61
Siddhartha Valmont
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Originally Posted by pierrox View Post
The only way would be to put the caliper upside-down, yes?
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Originally Posted by Eric aus Chemnitz View Post
Don't do that. The caliper is not designed to withstand abuse in this direction.
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 !
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Last edited by Siddhartha Valmont; 2016-12-13 at 12:25 PM. Reason: P. Dance
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Old 2016-12-13, 02:22 PM   #62
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Quote:
Originally Posted by Siddhartha Valmont View Post
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/showthr...40#post1660740
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Old 2016-12-13, 02:47 PM   #63
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Originally Posted by Eric aus Chemnitz View Post
Don't do that. The caliper is not designed to withstand abuse in this direction.
Right, I always forgot....

But... (time for another ugly paint drawing) ...what if the Oracle hub is mounted with the disk on the same side as the KH tab ? Wouldn't 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 thru...)
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Old 2016-12-13, 03:39 PM   #64
Eric aus Chemnitz
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Quote:
Originally Posted by Siddhartha Valmont View Post
Right, I always forgot....

But... (time for another ugly paint drawing) ...what if the Oracle hub is mounted with the disk on the same side as the KH tab ? Wouldn't 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 thru...)
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 don't know how well calipers withstand forces in the opposite direction they're designed for. Personally I wouldn't try it, but it could possibly work. Has anybody done this so far?
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Old 2016-12-13, 07:13 PM   #65
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Some calipers work with the disk spinning the opposite way and others don't. 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 "backwards", so it has been done, I'm just not sure about on unicycles.

All that aside, I don't 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.
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Old 2016-12-13, 07:28 PM   #66
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Not dead-set. It was more a "what if" since I like the idea of inboard and the idea of welded tabs. Outboard has been fine so far too.
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Old 2016-12-14, 06:00 AM   #67
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Non-conventional caliper mount position

Quote:
Originally Posted by Eric aus Chemnitz View Post
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 don't know how well calipers withstand forces in the opposite direction they're designed for. Personally I wouldn't try it, but it could possibly work. Has anybody done this so far?
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.
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Old 2016-12-14, 07:12 AM   #68
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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:

http://www.hopetech.com/products/brakes/trial/

So I guess the trial bikes do not have special tabs on the frame.
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Old 2016-12-14, 08:54 AM   #69
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Quote:
Originally Posted by lobbybopster View Post
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.
It is here: http://unicyclist.com/forums/showpos...postcount=1507
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Old 2016-12-14, 01:59 PM   #70
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Picture link

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Thanks Vookash
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Old 2016-12-14, 10:18 PM   #71
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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.
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Old 2016-12-14, 11:38 PM   #72
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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.
Reversing the frame doesn't really accomplish anything, anyway. The brake would still have to be mounted upside down or something.

I've 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 doesn't make sense. What alternatives are there? A 27.5" QX frame? Or Mad4One, which is what I'm leaning towards.
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Old 2016-12-14, 11:46 PM   #73
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The new Mad 4 One frames I've seen recently are really nice!
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Old 2016-12-15, 05:51 AM   #74
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The new Mad 4 One frames I've seen recently are really nice!
Last M4O frames have both disc tab for inner and outer setting
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Old 2016-12-15, 07:54 AM   #75
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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

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