Monday, December 31, 2012


Red's park/flatland frame:
74.75* HA, 19" TT, 11.4" BB height, 12.5" chainstays, removable brake mounts

thicker, straight gauge downtube and Supertherm top tube

Wednesday, December 26, 2012

Alain's 24

Alain did some "fish scale" effects to his frame before I powdercoated this one:

14" slammed CS (14.25" with 2.3"s)
13.25" BB height
22.35" TT
 He had a cracked dropout on his old WTP fork so I welded a new one in there... and took the liberty of gun bluing some graphics on there too.

Friday, December 21, 2012


68.5 HA, 74 SA, -25mm BB drop, 14.9" stays, 27.2mm seatpost, Supertherm front triangle

This geometry (steeper SA and lower BB) was designed for longer distance riding and has a lower BB for stability on dirt. 

 This tensioner position worked perfectly for SS but would likely be in the way of the chain on a 9 speed cassette ( in highest gear). I didn't have any problems lining the wheel up without the tensioners. The task is actually much easier than with horizontal dropouts due to the slider bolts that provide a little resistance. The ability to run a light-weight quick release hub (and not have it slip when cranking hard) is the biggest benefit that I see with this design.
The flat black is supposedly a base coat for some artwork. Hopefully that will make the frame stand out a little more. 

Thursday, December 20, 2012

The CS yoke and the S-bent seat stays took a little longer than expected but she'll be flat black by tomorrow.

Wednesday, December 19, 2012

 Something different...

Allen's frame all welded, waiting on slider bolts and possibly a HT badge.

 Joe's wife's frame should be welded tonight. Went with some flattened and S-bent stays. They'll have a yoke on the driveside for ring clearance.

Friday, December 14, 2012


Allen's compliant 26" is almost there:

Flattened chainstays to create some vertical spring while at the same time reducing side flex. S-bent seat stays to promote the same vertical compliance.

 31.6mm seatpost size with key hole in the front

Thursday, December 13, 2012

Local ripper and photographer Rudy Rodriguez came out and took some photos tonight. I tried to make something cool happen out of a sketchy picnic table set-up only to earn a bruised sternum... at least he caught some cool angles on a downturn table. I am loving the 22:

Rudy himself from a few rides ago:

and a good shot from a month ago of me on the 26. thanks again Rudy!

Saturday, December 8, 2012

Joe did a kickass job on the Aluminum parts for the sliders. My new abrasive water jet source AquaJetMfg here in TX also did excellent work with super-high tolerance steel parts.

Alain's 24 BMX... it only needed some S-bent chainstays and it fits a big 2.3" at 14.25"

Tuesday, December 4, 2012

Got another race 22" wheeler built: 26mm Seatpost, 990s, 10mm dropouts, Euro
 Allen's AM frame waiting on dropouts: Longer 5.5"  integrated HT, 31.6mm seatpost size
 Alain's 24" BMX: might need something drastic to fit some really big tires... S-bent stays + driveside yoke.

Saturday, November 24, 2012


I acid cleaned and powdercoated Jason's frame yesterday. Unfortunately his brake situation didn't work out for today's ride.


Thursday, November 22, 2012


I'll have two different angles for these, a set for AM frames and a tighter angle for DJ frames. The 7075 is on order by Joe the machinist and the 4130 is going to the waterjets.

Tuesday, November 13, 2012

left and right hand drive, 14.4" chainstay with 110X14mm spacing and clearance for 27t sprocket and 2.15" street tire slammed:

 this yoke has got an i-beam/rib welded inside to prevent flex

Thursday, November 8, 2012

Not the future

...but still amazing:

Wednesday, November 7, 2012

Friday, November 2, 2012


I actually wish that all frames were disc mount. So much easier than mitering brake bosses.

 Race 22":  it will probably be less than 4 lbs before chrome... I can't say how much that stuff will add.

Wednesday, October 24, 2012


Some design work on the sliding dropouts idea. I still have to decide the best way to handle the disc side... and not have it turn out ugly. This design allows the axle nut/ QR skewer to apply force to the face of the steel part and the sliding AL part at the same time. The steel part will likely be water jet cut and the mating portions would be machined to tolerance.

More 22" wheelers this week. A few of which are pretty unique- one with a disc mount and another will be a super-light race frame.

Tuesday, October 16, 2012

new bike: 22

So the tires I have really suck. They are rated to 80 PSI but probably shouldn't be. One lap around the driveway and the bead blew off the rear tire. It might be the cheapy rims, but the tires go on far too easily. I will have to get a new tire. Hopefully it was just a defective one. The biggest hurdle for the 22" bikes is obviously the extremely limited tire/rim selection.

Other than that, the bike manuals ridiculously well... even while riding with a 20" up front.

I built myself a 22" (wheel) BMX frame so I can get back to having fun at skateparks. Notable features are a straight gauge heat treated downtube and a thicker drive side chainstay (both for added dent resistance)
...and a chain tensioner on the peg side