Archive for the 'Unicycling' Category

Tom Holub took this great picture from last weekend:

It was soo steep that I almost thought twice about doing it.

Did a little motorcycle ride up to Folsom (past Sacramento, about 2.5 hours from my house), and rode my unicycle with a bunch of friends.

The frame, painted:

All together, but with the seat angle too high:

I finally got some more metal and time to work on my V36 unicycle frame. I removed a triangle support that I had added to try to reduce flex, and brazed on another tube that goes up to the seat post tube. Here is the tube taped on before I brazed it:

And after:

This totally added the strength I needed to prevent flex from side to side. In the above picture you can see the disc brake mount I “fabricated” from a piece of steel. I stuck it on the brake, and takes it on with the MIG welder before brazing it on:

Awesome! Full disc brake capabilities. I took a quick ride on it tonight for the first time; it works pretty great. I need to make some better handlebars, and adjust the brake tiny bit (it was shimmering).

V-36 riding here I come!

I’m working on a V-Frame 36′er unicycle, called the “Corbin V-36“.

It’s partially an experiment to see how light I can make it, yet still be strong and not flex.

I did a 3d model in Sketchup, and printed it full size. I then machined a jig to hold things in place. Here’s a video explaining the jig:

And some pictures. The jig setup for my my main seat post tube:

Experimenting with bending:

I’m using cro-moly tubing, 1/2″ OD by .049 wall thickness. It is too small of tubing, and the frame flexes when going up hills. I’m going to use 7/8″ tubing next, and try to re-enforce this frame.

Working the corners in my jig:

Jig and frame almost setup to weld the front post tube:

Clamped together, and brazing started:

Popped out of the jig and a test fit:

Setting up the main seat post:

After it was brazed on:

Horizontal support, bent to match the tire diameter, brazed on, and a test handlebar tossed on:

The frame flexes *a lot* going uphill. I have to use larger tubing for the seat post to fix that. I brazed on some lower supports to try to prevent flex, but it didn’t help much. I’m going to braze on another tube really close to my seat post to try to get this frame to work. Then, if it does, I’ll make another one with thicker tubing.

Due to heat distortion, I had to ream out both tube holes to get the stuff to go into them.

Uni up the pass, Switzerland 2012

Nathan and Aaron in the Sun

Here’s my act I made up. Thanks to Jay for filming it!

Nathan’s Unicycle

July 2012.

Nathan’s yellow KH 36 geared unicycle. 7 exposure HDR.

There are three mad unicyclists on the mini-Swiss unicycle tour I’m doing. Me, Scott and Nathan Hoover. Unfortunately, I don’t have a good picture of Nathan yet, but here’s a few cool ones.

Myself (Corbin) taken by Scott Wilton and processed by me to do a cool black and white HDR:

Scott Wilton, in living color by my unicycle. Also an HDR out of 5 exposures, with Scott selected to tone down any “ghosting” that occurred from movement.