That’s good news to consider. I’ve been thinking about welding some brake mounts during the winter. And having disc brake is obviously nicer than a v-brake I was aiming at.
what style frame do you have? is it steel? do you have ISIS or Square taper cranks?
lalalala… looks like in a few weeks i’ll get a big parcel from jogi… 
I’m probably in for a KH bolt-on, assuming I can get cranks (and 155 is a crank size I’m very interested in - bonus!). Price with and without cranks?
I am also excited about 155mm cranks.
PM sent
And turtle: make sure you post a bunch of pics of that beast. When I get mine I will do the same. Not the same unicycle but it will be MountainUni ready.
Jeff and I have to talk pricing after we get the rotors because it’s presently dictated by a quote and we need the quote to match what it actually cost us to make this possible. We won’t make any actual money until the numbers go up so this run will be conservative and a bit of a sacrifice. we have scooped less than a dozen 155 sinz cranks and the majority will be going to a manufacturer. I expect that we will be competitive with the sinz cranks and sell them for $60. if we’re out we should be able to restock in one month, but perhaps you may find them available elsewhere if that happens. we should have no problems with that size in square taper.
we have no bolt on caliper mounts but we’re counting who wants them and are gearing up.
so far a kit will include the rotor, sinz crank (optional from us), 1mm spacers (set of 20), weld on mount, chain ring bolts. and you must use the Sinz brand crank to get the spacing right if you aren’t extremely lucky. the total cost for that should be around $150 and when we get the bolt on hopefully $200, as we have been suggesting since the first post… but when we go to market we will really know and the actual price will be known. thank you all for you patience!
It’s nice to see that this is still happening. I’m sure that you have been working on this behind the scenes, but it looked for a while like it had gone dormant.
I may have to sell some bike stuff to pick up one of your rotor’s. I’ll be putting some stuff on Craigslist tonight.
I love how you guys are teaming up with Triton. Seems like the perfect combination of small companies.
I am patiently waiting for my triton frame to arrive. Hopefully by winter.
we’ve got some milling to do…
This is the bolt on caliper mount prototype… it is working very well and we intend to make one that bolts to a KH rig since welding to aluminum will ruin the heat treating and lead to premature failure. Besides, it’s nice to just bolt the system on and go! We are thinking of making a universal bolt on caliper mount that fits Nimbus, KH, etc… bolt patterns. Our intention is to only release them in ISIS 42mm bearing size, because the crank stop dictates the position of the rotor and the bolt on positions the caliper consistent with that spacing. Ultimately, however, it would be nice to see mount tabs on KH and Coker frames on the right leg for 180mm rotors… For now, there are lots of folks that already have KH frames without disk mount tabs that wish they had the option of upgrading to disk brakes. Please speak up!
This is the bolt on caliper mount in context with the crank, rotor, and caliper mounted. We’re meeting with the machinist to see how much we can mill out of it today…
Looking forward to seeing the final product, me personaly I might be interested in buying a disk brake, but I want to see more peoples experiences with them first 
I think this inovation is great though Sorry but im to lazy ATM to search what the advantages of this disk brake is over the magura brake would you mind telling me
Certainly, thank you for asking…
We’ll have a few available in a couple of weeks. After the initial prototype was installed last November, we have installed this system on a hunter 24" Muni, a nimbus 24" Muni, a nimbus 29" Muni, The Rhino installed one on his Nimbus Titan 36er, Jogi installed one on his 36" Triton, and I have the system with a bolt on caliper mount on my nimbus nightrider 36er.
Jogi and The Rhino have posted their experiences in this thread, and they seem to consider the disk brake a vast improvement. MountainUni has not compensated them for any opinions, we just offered them to test the disk brake system by providing them with the system. Jogi has both the magura and the MountainUni disk brake system on his rig to compare them head to head in any given situation, he still favors the disk brake.
the general disadvantages of rim brakes include poor braking surfaces of the rim, weather the rim surface has been damaged with nicks or burrs, has become warped, or has been contaminated with sand, mud, ice,snow, rain, etc… some 36" rims don’t have surfaces intended for brake pads! The rim brake pads have limitations too, some compounds wear very quickly or don’t work as well in the wet, harder compounds may even wear through the rim and cause tire failure. some pads heat up and glaze the rim and lose effectiveness.
Conversely, a disk brake is away from the road surface and the elements, it works more consistently in all types of weather and environments. the pads don’t lose effectiveness at higher temperatures. a warped wheel or a rim with dents, burrs, seams, or covered in whatever doesn’t compromise performance.
What you notice most of all is that disk brakes are more consistent, predictable, progressive, and far less grabby than rim brakes of any type. These qualities shine especially on unicycles, and particularly on large wheels with short cranks at high speeds -yet disk brakes are proven on Munis in technical trails and downhill mountain runs.
That bolt-on mount is really tidy - nice design.
Rob
+1 from my experience with bicycles.
In addition, rim brakes (more or less depending on type) can get misaligned to the point where they rub the tire, which can cause premature tire wear and potential failure.
Question re the bolt-on:
Do the screws for the caliper through-bolt to a recessed nut we can’t see in the picture, or are they just threaded into the bolt-on mount? If the latter, is it aluminum, and if aluminum, how durable do you expect the threads to be?
that looks awesome! I really would like to try one out on my geared KH 36.
corbin
Sorry if this has been covered already but…
Can this disk brake system be used with a KH/Schlumpf Hub? If not are there any plans of a future generation being adaptable? I’d definitely be interested in losing my Magura hydro brake in favor of a mechanical disk brake; far fewer worries, lower maintenance IMHO. Thanks! Looks great, surprised that this hadn’t been done before now!