Wishbone seatstays

The two-triangle bike frame is pretty hard to improve upon...there are little tweaks but for the most part everybody uses the same design because it works.  I've always loved Retrotec and other frames that incorporate unique lines but try to make a rigid frame less rigid where it matters.  I know there's very little evidence... Continue Reading →

Wishbone seat stays brazed and done

Making this type of wishbone stay was kinda like making a really uber lightweight fork. The upper piece that connects to the seat tube is 25.4mm (diameter)  x 0.9mm (wall thickness), the crown pieces are 19mm x 0.9mm, and the legs are True Temper seat stays, 16mm x 0.6mm or thererabouts. It's funny to me... Continue Reading →

Segmented fork, take 2

After bending my first segmented fork when seeing how it'd hold up, I got right to making #2 since I don't have a fork for the RivBomb frame to ride yet. I swear, what takes most people 4 hours takes me 4 days. Of course, I tend only to get a few hours a day... Continue Reading →

Testing 1, 2, 3…

I killed my first segmented fork....on purpose.  I wanted to test the strength of the fillet brazed sleeves since when I cut up a couple of test brazed sleeves thebrass was only getting down 1/2" at most from the edge of the sleeve.  I'm pretty sure it's not my brazing technique, since there is a... Continue Reading →

The Mtn Tourer (frame #2) is tacked

My laptop died a couple of days ago...right when I finished a mapping project thankfully.  I left for a meeting, came back home, tried to turn it back on, and it just was black.  Black screen, a slight thumping sound...dead.  It's about a year and 3 months old and of course I only had a year warranty... Continue Reading →

Seatstays are done!

I'm done with mitering and slotting the seatstays.  It took me way longer than I thought it should because I had some pre-bent S-bend seat stays from Nova...and I totally crunched them too tight in the fixture. I know now how very carefully to tighten the tubing blocks down on the stays. They're only o.6mm... Continue Reading →

Brazing the dropouts

I've never put a torch and brass to steel before these first few pictures...so be easy on me!  I learned to silver braze the various braze-ons on a bike and that is relatively easy, quick, and fun.  But not knowing how to exercise proper heat control, how much oxygen and fuel to make a perfect... Continue Reading →

Fork #2 done

The first adjustable-rake fork is done!  I haven't put in tension screws yet since the track SS dropouts are narrower (7mm) than the sliders (9mm) which have the same 4mm bolt tapped into them that I was gonna try and put in the track drops.  If I try it, I'll have to go with a... Continue Reading →

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