Well not really a tool I made but something I adapted to make my fork fixture more useful. I could have simply bolted a post the fixture and stuck it in my park stand but I found these Lane Carr positioners and spent about 10 hours making them function like I wanted and now I can spin my fork fixture around with ease. Brief side quest to make some knurled threaded knobs to secure it to my work plate. Ha!
Fork Fixture Positioner by Duane Draper, on Flickr
Could you share something more on the fixture the tyre clearance tool is mounted to? I’ve been thinking a lot about DIY, 3D printed stay mitering fixtures, so happy to see examples 
(also from others if you have one!)
So the seatstay clamp in the fixture is a thing that I threw together from some 3D printed tubing blocks, and a sliding mount that holds the 80/20 at a right angle. (For the chainstays I use a dummy axle with a similar setup.) It got the job done, but is definitely a pain to set up and is not very rigid. Thankfully that didn’t matter much because the tube clamps near on the other end is more traditional, and made of made of metal. Unfortunately i don’t have more pictures right now, accept models of the 3d printed parts used. I imagine a fixed position, completely 3d printed SS fixture would work just fine, but I think with adjustability built in, it would become more challenging. Looking forward to seeing what you come up with!
Nice work! That’s my fave way of clamping an eccentric in the shell too.
I assume you’re not using a F.der braze-on (does anyone use F.der.s anymore?)
If you do use one, it’s wise to put them on before tacking the frame, because those BOs warp the tube off to the side. Since I come from the days of F.der. BOs, I prefer to grab the tube with a cone in from the top, that doesn’t care what the middle of the tube does.
Your tube sans-BO is probably straight enough not to care about being held in the middle. So carry on, and ignore everything I just wrote, after “Nice work!”
Thanks Mark! I copied your tandem BB from a pic that you posted a while back and made mine as close to yours as I could. It clamps the eccentric BB cartridge perfectly. I also took your advice and purchased a Problem Solvers BB blank instead of trying to turn my own.
This tandem is going to be electric with 20” wheels for my wife and I. More of a fun ride than a serious pedal bike. My wife has bad knees so biking is not her favorite activity. The electric motor should take load off of her and me!
I plan on using narrow wide chain rings, no need for a front derailleur braze on. The gearing will be simple and probably won’t get used much!
Can’t say thank you enough for your expertise!
Fernando
Haha I love it. Thanks for the ego strokes.
But I didn’t invent that, it’s as old as the hills.
