I am looking to buy a 24 inch frame with 42 mm bearing housings. I would prefer it to have a left side disc mount tab welded on but will use a D-brake if necessary. It can be aluminum or steel. Location is East Coast USA 28110
Steel frame not really compatible with D-brake
Choices are Impact or Nimbus or QX or RGB (or Triton or Flamberium)
Why is a steel frame not compatible with D-brake? I have seen ppl use them on nimbus 2 frames which are steel.
I would buy the nimbus 2 frame but they are sold out. I can get the oracle but figured i’d check the second hand market before i paid extra for that one
bearing housing on a steel frame is a pressed sheet of stell using bolt + nut while D-Brake is using bolt only plus contact between pressed sheet of steel and machined aluminium are not very good from mechanical point of view …
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But it is possible with an adapter. I run my 24" Qu-Ax steel frame with disc brake having no issues.
See here: Euer setup
A simpler setup is here: Euer setup
The d’Brake doesn’t care about using a nut or a thread in the frame. The only important thing is to hava a planar surface to transfer the force from the brake into the frame. More info here: Nimbus D-brake -vs- Mountain Uni UCM brake mounts
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We produce Steel and Aluminum frames with brake tab.
Here the Steel frames
https://unaruota.com/ZC/index.php?main_page=index&cPath=44_49&sort=a3&language=en
Here the aluminum frames
https://unaruota.com/ZC/index.php?main_page=index&cPath=35_47
To see the right price and shipping cost I suggest to register and login.
https://unaruota.com/ZC/index.php?main_page=login
Any question is welcome
Marco
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Hi Marco, can you elaborate on the sizing of you CRMO frames please? I am assuming the XS-L sizing is for wheel size? If thats the case would a 24” be a S or M
Or am i totally missing something here 
URC by MAD4ONE Steel frames left mounting brake tab
On the “Extra-Small” you can mount tires up to:
- the 20-inch wheel with tire 20 x 4.00
On the “Small” you can mount tires up to:
-
the 24-inch wheel with tire 24 x 4.00
-
the 26-inch wheel with tire 26 x 2.40
On the “Medium” you can mount tires up to:
-
the 26-inch wheel with tire 26 x 4.00
-
the 27.5-inch wheel with tire 27.5 x 3.50
-
the 28-inch wheel with tire 29 x 2.50
On the “Large” you can mount tires up to:
-
the 27.5-inch wheel with tire 27.5 x 3.50
-
the 28-inch wheel with tire 29 x 3.00
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Thank you 
Not always. Some steel frames use machined bearing blocks, like the Nimbus II for example.
The Nimbus frames that are steel (the Muni and road range) have a billet bearings housings (sometimes called a machined bearing housings), not pressed ones. So there is absolutely no problem in fitting the d’brake to them. In fact this was the main market for this product.
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Hi Roger, that is one of the reasons i have decided to hold out for the nimbus 2 to come back in stock for this build
Any idea when these will be available and will they have a brake mount?
Correct me if i’m wrong but i see three configurations… the club version with stamped housings, a machined version with no brake mount and the MUni version with brake mount
The Nimbus II is not a MUni or Road unicycle, they are freestyle… but they also make great universal unicycles which is why I guess you are looking at it. It is unlikely they will ever have a brake mount fitted on to them as standard.
The d’brake should work well on it. Especially the latest version which comes with an antivibration bar as standard.
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This is the frame i am hoping to buy. If not this one then i will get the version without disc mount and use the d-brake
I will be using it to complete my 24” freewheel
Ah, that one… they just don’t have the latest one. Next production run it will have the mounts on it.
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Awesome! Thats what i wanted to hear
Thanks
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