Hey guys and girls.
After making this video, I chucked the 12 in the corner and its been there ever since. Recently I bought a new wheel for my trials uni, leaving me with a spare hub and spokes. The rim was no good, it was cracked all around the inside.
So, I started by unlacing the old 19" rim. Some of the spoke nipples were rusted to the spokes so I couldn’t rescue them to re-use, I had to cut a lot of the old spokes to get the hub out.
Once I had seperated the Onza hub from the rim I needed the 12" rim. I unlaced the square-taper hub from the 12" rim which was easy seeing as most of the 16 spokes were snapped!
Now I had all the parts I needed to start building the 12" trials wheel
As you can see the spokes are quite a bit longer than they needed to be. I measured the Onza hub and the 12" rim and worked out that the spokes needed to be about 75mm long. I set to work cutting.
After I had cut enough spokes to the right length I tapped a thread onto the end of each one. I didn’t take any photos of that stage, I have no idea why Anyway, heres the result. Before and After
God my hands hurt after tapping 16 of the buggers!
Now I had all the components I needed. Now, obviously the hub has 36 holes and the rim has 16. Thats 8 spokes shared between 18 holes on each flange. I decided to space the spokes on each flange like so: Spoke-hole-spoke-hole-spoke-hole-spoke-hole-hole-spoke-hole-spoke-hole-spoke-hole-spoke-hole-hole
That way the gaps where there are two empty holes are opposite each other and will be symmetrical.
Sadly I didn’t take any photos of actually lacing the thing. I think I was far too engrossed in making sure I was getting it right to remember to take any.
Anyway, heres the final result!
Yes, there are 3 odd spokes. Thats because I ran out of 12 gauge nipples and couldn’t get hold of any.
Heres a shot with the tyre on. All I need to do now is get some new bearings and chuck it back in the frame.
The cranks I am going to use are 140s. The pedals just touch the floor as they go round, but this is a trials uni, so that won’t matter too much. Skinnys will be fine obviously.
Can’t wait to ride it!