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Peg unicycle and more adapters for attaching a unicycle saddle to a bike fork

Since I posted by Unicycle candidates for riding skateparks I’ve been wanting to try out a couple of the candidates I put forth, the peg unicycle and the drop plate unicycle. I’ve had my eye out for a cheap BMX fork and got a couple unsuitable ones from craigslist. When trying to take this project forward recently I discovered my BC wheel uses a rear wheel (where most use front) and that it’s difficult to find a wheel/fork with a 14mm axle so I went ahead and ordered a drift trike peg wheel and fork:

http://www.flatoutdrifttrikes.com/parts-accessories/huffy-pro-peg-front-wheel/
http://www.flatoutdrifttrikes.com/axles-and-frames/huffy-pro-slider-peg-fork-1-1-8/

The wheel has a disc rotor mount and the fork has a mount for a caliper which is nice. This is the third drift trike front end I’ve converted to a unicycle. The first two were 1 1/8" (28.6mm) outer diameter and 1" (25.2mm) inner diameter and I checked the new one was 28.6mm outer diameter but I forgot to ask about the inner diameter which turned out to be 24mm. To get a seatpost to fit I’m using a 22.2mm one with an old 25.4-26.8 shim I hammered into shape and it works OK.

Like my other drift trike front ends I didn’t want to slot the fork in case I wanted to sell it later. I previously posted about an adapter I had fabricated for attaching a unicycle saddle to a bike fork. I came up with two other ideas for adapters.
[LIST=1]

  • File the lip off a standard 25.4/28.6 Nimbus double clamp. Fit the bottom half over the fork and the top half over a 25.4mm seatpost that has a 25.4-28.6 shim. This doesn't seem super sturdy but I have very little seatpost showing on my 3.8x geared unicycle and will eventually use this method there.
  • Start with a 1 1/4" scooter quad clamp. Fit the bottom half over the fork that has a 28.6-31.8 front derailleur shim and the top half over a 25.4mm seatpost that has a 25.4-31.8 shim. [/LIST]

    Until I get all the parts I’m using the filed Nimbus clamp on my peg unicycle with a PVC shim I previously made for fitting aero bars on my Shadow handle: