Monday photos from Felix

Speedplay lives!

Clean. A little _too_ clean.

Fattie on dirt? Why not!

Down with training wheels!

Thanks to Brad for the cute picture!

Followup to the Jamboree!

Nekkid!

Joe's Geometry Jamboree

By popular (ok, one person) request!

Executive summary: short and semi-slack racey bike for attacking the twisties in TX.

New bandsaw says, "I am not impressed"

-69.5 HTA and 90mm trail, designed for a Niner carbon rigid fork or 80-100mm travel suspension

-60.5cm ETT, 66.9cm front center, 107.8cm wheelbase. 

-42cm chainstays, plenty of room for a 2.3 and a 34t oval chainring (lotsa runout on those bad boys - I had to have Joe send me the crank and ring to double check clearances)

-295mm BB height. Just a smidge on the low side if you were running suspension but with a rigid fork you can go a hair lower and Joe likes low.

-Curved seat tube for tire clearance. Joe took it easy on me and let me use straight tubes for the rest of the front end. 

-Built for a nice normal 27.2 post and using nice skinny-ish 35mm/28.6mm down and toptubes for a steel-is-real ride with a little give. Joe is not a huge dude either, so fat tubes were never on the radar.

-Paragon rockers for SS fun if needed, plus chainstay length adjustability.

Pikes Peak!

Some manner of velocipede in the foreground. Curious.

Couple pictures from John

Short-stay (though he's running the wheel slammed...back?) 29er, baby!

Bar ends are so 1995

I like DT cable routing on these curved-toptube bikes

Now available: Curved tubes for framebuilders

I've spent quite a while figuring out a reasonable technique for making nice curved tubes with butted tubing and I've had a reasonable amount of luck (after ruining plenty of fine American steel in the process of learning what not to do). If these items are popular I may offer some other options that I commonly use (curved 31.8mm seat tube for 27.2 post, curved 34.9 seat tube for 31.6 dropper post, curved 31.8 supertherm top/down tube, 19mm twin toptube/seatstays?)

Without further ado:

Please note: All bent tubes will exhibit some minor ovalization. It is up to the end user/builder to determine appropriate diameter/butting and miter/cope/join appropriately. There is no visible ripple/flaw at butts/butt transitions (transition from bent/straight on seat tubes is visible). Butts marked for builder's convenience on request.

28.6mm diameter 9/6 single butted seat tube. 650mm total length, 75mm butt. Bottom 250mm is curved 10mm (approximately 1750mm radius). Appropriate for short-chainstay frame designs and will take a 27.2 seatpost. REQUIRES a sleeve or lug at toptube/seatstay cluster. 4130 cromoly. Bent/straight transition is visually obvious and overenthusiastic insertion of a too-long seatpost can damage this tube. Builder must adjust seat angle for desired saddle positioning. $60

-28.6mm diameter 9/6/9 double butted x 600mm. Butts are 100mm at each end. Curved 25mm over total 600mm length (approximately 1750mm radius). Appropriate for toptubes with curve oriented either up or down. 4130 cromoly.  Butt transitions are NOT visible after bending. $70

-31.8mm diameter 9/6/9 double butted x 600mm. 90mm butts at each end. Curved 25mm over total 600mm length  (approximately 1750mm radius). Appropriate for toptubes oriented either up or down, or for light-duty downtube. 4130 cromoly. Butt transitions are NOT visible after bending. $70

-Custom tube bending. Want something unusual? I can bend most sizes of commonly used bike frame tubing, both straightgauge and butted. Heat treated material will cost considerably more, but yes, I can do it. Contact me for a quote.