Showing posts with label bent butted tubes. Show all posts
Showing posts with label bent butted tubes. Show all posts

Friday, August 28, 2015

Ron - done

29 with clearance for 27.5+ seems to be all the rage these days. Fun way to have 2 bikes in one (though IMO the 27.5x3, 29x2, 26x4 bike is the way to go if you really want the Swiss army knife effect!)

This one is an all-arounder with Rohloff capabilities as well as the usual stealth dropper, loads of tire clearance, etc.

Still all fluxy

I can't resist putting curved bridges on these bikes with big tire clearance...

Wednesday, August 26, 2015

Random photos for Ron

29/27.5+ with Rohloff/SS/geared capabilities, fun times.

Cleaned up and vented for DT welding-in

Fluxy

Like a boss

Front end


Toptube oxide rainbows

Wednesday, July 08, 2015

Mess with Texas...

Or just pose your bike in front of some giant accordion type structure...

Thanks to Jon for the picture!  Geometry and geekout here.

Edit: Got a couple folks asking about the sweet Nox wheels. Yes, I sell them. Yes, you can get custom colored decals (costs a few extra bucks). Rims alone are $375 each in any model/size/width. Whole wheels obviously will vary tremendously, drop me a line if you need a price quote.


Monday, June 29, 2015

Sunday, May 31, 2015

Pics from Christine!

Fruita

Laramie shout out from Christine, who says,

"This is a very belated thank you for my bike, which is going to be my first bike to earn a name, I just haven’t decided on her name yet. I think Felix told you, she feels like an extension of my body when I ride. Riding has never been so fast and fun, and yet also feeling so secure.

Here are a couple of photos, including two from today when I won the women’s intermediate Gowdy Grinder. My only complaint is now that I’ll have to do the advanced race next year. The third is in Fruita on the classic Kessel Run… the first time I rode the bike, not counting around the block before we left.

Thanks also for hosting Felix in a dream bike building week, to build (another) dream bike."

Gowdy

Sunday, May 10, 2015

Down with training wheels!

Thanks to Brad for the cute picture!


Wednesday, April 15, 2015

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.


Thursday, March 19, 2015

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

Monday, December 16, 2013

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.