DIY Nimbus Nightfox Rim Brakes

I bought a used Nimbus Nightfox a little while ago, and when I bought it, I figured I wouldn’t need brakes because I’ve got functional legs. However, I live in a place where there is no flat roads or paths whatsoever, just hills. From my first ride on the Nightfox, I realized that I’d made a big mistake buying one without brakes. I needed brakes of some sort if I wanted to actually ride anywhere. This was a problem because the uni had none of the mounts and components for disc brakes. So I got myself some cheap caliper brakes. Because the Nightfox’s frame extends rather than the seat, I had to figure out some way to lower the brakes so they’d reach the wheels. My brother invented and welded a piece that bolted to the bottom of the seat and the hole in the frame that was already there. He shortened the cable and adjusted the brakes. The short handlebar came from an old b!ke handlebar (I might get a real uni handlebar eventually). To put disc brakes on the Nightfox would have cost me over $500. This only cost me around $50.

This is the result. The brakes both work great and don’t look too bad.

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That is great! Nice work, and well done!

Might get some flex but certainly better than no brake.

Another way would be to drill the forks on either side then bridge the gap with bolted span of metal plate like a seat stay or chain stay brace on a bike frame. More work but less flex.

Well done! Congratulations with your brakes! :star_struck:

Wouldn’t some flex actually be an advantage, given that the cheap caliper brakes probably don’t have much modulation?

I would rather have some sluggishness/flex when engaging the brakes than a sudden full force braking experience.

So how is the braking experience on this setup? Do you have any reference with brakes on other unis?

It could also lead to a stick slip effect.

I have no idea what that is, unfortunately. Can you risk that the pads rub the tire or move below the rim?

I think it brakes pretty good. It would be hard on a hill to full on stop with these brakes, but all I really needed was to take some pressure off my legs on the longer, steeper hills. There’s no vibration or squeaking. I haven’t tried any other unicycles with brakes…if my brakes are truly terrible I wouldn’t know :laughing:

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The flex I’m speaking of is the caliper arms moving forward under braking. This will make the pads come up and into contact with the tire.

Not always a problem but if there is enough flex it can be. A bridge across would have less.

Ah, yes. The mount is so long this might actually happen.

This actually reminds me of the absolutely insane amount of slack in my 3D printed brake mounts for my 16".

Do the brakes work or is there too much flex?

They worked, and pulled me through a 7 km ride on icy hills that day. They just took some time to engage, due to the flex. These plastic mounts were actually completely broken at this time and only being held together by a pair of plastic strips. But they still managed to serve as brakes!

Maybe you can take this thing along on the ride:
with some precision it won’t have any flex issues. just hold tight.

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This is a pretty neat way to add brakes to a Giraffe! We can now finally go down steep hills at a proper height. A nice multi purpose tool, as you now can more easilly reach obstacles at intesections, so you wont have to dismount or terrify pedestrians while idling, and you can also pick up your juggling clubs without dismounting, or begging pedestrians for aid.

:star_struck:

Has anyone actually equipped their Giraffe with brakes..?

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I don’t think he has a giraffe, but if he did, @UniGeezer is a good candidate for this. I’m sure it helps when riding downhill while mountain giraffing.

Is mountain giraffing an actual thing?

Probably soon it will! But one would really struggle with branches hitting your face, and probably feet as well.

At least one can just grab on to the nearest tree when UPDing on the trail.

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Find out yourself … Search results for 'muni giraffe' - Unicyclist.com

Short answer: no

Despite some have tried:

Same goes for trials:

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upon buying a used original style night fox frame I used the wheel of of my 32 udc titan with the help of bearing shims. This wheel had a square taper hub and the frame had no disc rotor mounts. I rode it this way for several weeks before rebuilding the wheel with a disc ready isis hub and with the help of a d brake mount I mounted a disc brake. Prior to this I was working on a design to use my pull, rim brake from the titan . My intention was to make a two piece bracket that fit on both sides of the frame and clamped on with screws and I would mount the brake the same as going through the frame. This way I can adjust it up or down for 32 or 36 wheel. I planned on using rubber liners on the clamps made from an old inner tube to protect the paint.