Just to prove it is possibel


A few parts for my old schlumpf


Put off the Button

put on a long m3 nut on

put on the mountingplate, it is just screwed into the crankpuller thread.


put on the servo ( i built two microswitches inside, it is moving 360 degree and is stopped with the switches in the two positions of 180 degree)

put the lever on

put the batterie 12v/6v and the receiver on
position high gear

position low gear


looks a bit like a fluxcompensator.
The batterie and the receiver are too big.


A for shift down , B for up.
I allready tested it and it works, so it is possible, but i think it is really unnecessary.

21 Likes

Impressive ingenuity there! It took me a moment to work out what you were trying to automate, then a realised it was the gear changing element of the hub.

It would be impressive if someone could come up with a pedal assist version for a unicycle much like we have on e-bikes today to help on those hills.

You’re not the first one to automate this. But that’s always amazing to see such a project! :star_struck:
Congratulations!

Do you mean Justin’s prototype? :grin:

3 Likes

Not to discount your technical skills but can you tell us about the frame and bearing caps?

It’s an original Schlumpf frame.

Ok, Very interesting I have never seen one before. Thank you.

Yes it is a Schlumpf frame, but the tubes are not orginal. The orginal oval diameter are really hard to get.

I would love to have an automated gear-changing system. While I can shift the gears, I usually end up slowing down first, and taking several tries to get it “right”. It would be nice to just shift when I want to, and be on my way.

I’ve seen one of the other setups for this; the maker had some cables stretched across where the buttons are, and a system to tighten those cables to push the button. Also a complex system, but hard not to be complex when it’s got to be on those rotating parts!

1 Like

Hey I know it’s off topic but I want to make a 52” uni with a pneumatic tire, I have the tube figured out but I don’t know what to do about the tire. I was recommended both you and sasketchewanian, he doesn’t appear to be active on this website anymore. If you have any tips could you help me out?

@aws

Check out this: How bicycle tires and inner tubes are made - experience the complete production

It looks like they would have to custom make a machine for a 52” tire, I just want some advice on how to put two tires together

Just search for “Frankentire” and voila: The Missing Link: A 32" unicycle, a' la Walmart and UDC - #49 by Nurse_Ben

Thank you so much

It looks like 2 26” tires won’t work. I need some overlap. 27.5” or 29”? Big question of the day

Hi,

i made the tyre of two continental raceingbike tires. They are clued to the rim, and the tube is fixed inside of the tyre. So it will not be useable for foldingbike tyres or clincher tyres.

gruss aws