The two frames for ECTO/ Flying Dog are headed up to Shawnee Trail Bike and Performance Coatings. They will get a ceramic coating, and I believe these will be the first frames they’ve done. We’re all eager to see how they turn out. My next project is a disc brake road bike. This is a relatively new phenomenon, so I’m mostly on my own with the design. Geometry wise, it’s a road bike. No big deal. The disc specific parts of the deal are what will be up to me. One of the things I’ll be doing different is the front brake mount and dropouts. Paragon machine Works makes a really nice brake mount that I’ve used a few times. They are out of stock currently, and I really don’t want to wait and see if it becomes available in time. Also, I really couldn’t find any front dropouts that I liked. So, I thought about one of my framebuilding heroes, Rody Walter of Groovy Cycles. Rody is one of those guys who isn’t just a framebuilder, but an awesome overall fabricator. So in pondering my options I thought, “What would Rody do?” Yeah. So I got online and ordered up some .190″ 4130 plate.
That’s going to be the front brake mount and dropouts for the fork. It will be a lot more work, but what the hell. I do this because I like it, and it will allow me to put more of a personal touch on the frameset. Hell, that’s why people get custom bikes, right? After this I think I”m going to have to make a WWRD? sign for my shop:)
Not really, but that’s what I feel like doing now. Ya ever do something for a while and then change the way you do it and feel like changing all the previous examples? Well, I won’t be going all George Lucas on everyone, but I really like this set of chainstays that I did from 7/8″ round 4130.
Let the pictures commence.
Here’s the starting point on my frames, the seat tube sleeve is marked with an engraver over a paper template and Sharpie.
Then I braze it to the seat tube at the appropriate place
Then I have to cut the seat tube to match the sleeve, so I cut those points twice.
Aaaand enough of that. On to the money shot, which is the new chainstay design.
Right here, 7/8″ mil spec 4130 chromoly tubing, bent and dimpled to clear a 2.3″ tire with about 5mm on each side, and healthy clearance for chainrings and cranks. I can’t see it very well, but I tapered the tubes down to about 9/16″ on the drop0ut end. It’s a short taper, only about an inch, and I think I’ll be doing it over a longer section in the future.
Don’t mind the Sharpie marks, after I tack the frame I check alignment. The marks are for me to braze everything into alignment, and they’re almost always the same. I guess that means my process is fairly repeatable.
More soon, thanks for stopping by.