I didn’t find such a light rim as replacement of my 36er steel rim in the past and so I decided to build my own rim. I rode it for nearly 3 years now. It costs about 36€, weights about 619 grams and it has 36 holes. The rotating mass of the total wheel was devided by two. Astonishingly I didn’t notice so much difference while riding. But it is much easier to carry.
The main problem was that my rim requires a disc break and it took 1 year to design a disk break mount for my square taper generation 1 Schlumpf hub. As shown somewhere here in the forum, my rim has the theoretical advantage that it can be dismounted into 2 parts for traveling.
I can’t imagine that a lite Nightrider on a skinny rim would feel very wide as they’re pretty round as it is. I know you love weirdly skittish tyres but thinner 36" tyres sounds pretty awful!
Here’s a shot of the nightrider lite Tire on the carbon rim.
The second shot shows the carbon rim next to the stealth rim and you can see there’s really no difference in the width. Can you guess whether the carbon rim is on the left or right?
Btw, the weight of the original NR wheelset, minus disc, cranks and pedals is 10lbs!
My 36er Rim has an outer diameter of only 24.5mm. It rides without any problem. I ride it with high pressure on the road. So for sure the 33.5mm diameter of the carbon wheel is no problem at all… with high pressure on the road.
Yup, the rim is my own creation. For Aluminium waiting is over. I avoided showing special tools in my report. So feel free to go to your workshop and create your own custom rim right now!
I investigated how to create carbon wheels. But for carbon I guess it is better to wait for what other people create for us.
I have some questions about the nimbus 100mm 32-hole disc hub and the spokes (I’m in the process of purchasing the rim, the hub and the spokes). I read on facebook you use 367mm spokes.
I used the UDC spoke calculator (https://www.unicycle.co.uk/calculator) with an ERD of 745mm and the dimensions of the nimbus 100mm 36-hole disc hub (the 32-hole hub is not in the list, I don’t know if they’re exactly the same…).
Results : 361.12mm for the disc side, 362.44mm for the non disc side. I
Did I make a mistake? 362mm spokes will be too short?
Moreover the angle of the spokes for the disc side, it is about 2.7°. Wasn’t it difficult to build the wheel? Does the wheel look solid?
I asked Roger Davies about the spoke lenght. Are you sure about that? The 367mm spokes are standard spokes?
Roger said “They worked exactly right with those 367mm spokes or was the thread poking through the end by 4mm?”
Thanks in advance for your response (I’m a stuck to choose the spoke length and I have to quickly place an order…)
Are you talking about the UDC spoke calculator? The nimbus 100mm 32-hole isis disc hub is not in the list, there are 100mm 32-hole isis hub (without disc), or 100mm 36-hole isis disc hub.
Anyway, Roger told me that the figures are the same for these hubs, and Roland from municycle measured the hub and sent me the figures I entered in the calculator. (Flange width disc side: 35mm, Flange width non disc side: 71mm, Flange diameter: 57mm)
The result is always 361/362mm for 32 holes (it is 358/359mm for 36 holes). I have three options left:
UDC spoke calculator is wrong
ERD (745mm) is wrong
362mm is right
I prefer the third option, but we’ll check that out.
