Siren Cycles‘ has just created their first carbon fiber tubed bicycle, a cyclocross bike….and this one’s actually going to Mike from NoTubes.
Because the lugs are 7005 Aluminum (as are the chainstays, BB and headtube), Siren’s founder Brendan Collier could still make it a full custom bike. Besides geometry, the bike’s set up for disc brake tabs with 135 rear spacing. Headtube is the now-basically-standard 44mm tube used by almost every handmade builder because it allows for just about any steerer tube size and headset.
The carbon tubes were sourced from Rock West Composites in Utah and chosen for specific diameters and thicknesses to tune the ride and feel of the bike. More pics and a bit of Q&A with Brendan after the break…
“The benefit of building a bike like this is I’m able to give our customers the lightweight and ride feel of carbon but still do full custom fit, custom geometry, you know, anyway you want to do it,” Collier said.
This frame retailed around $1,895, including paint, which is done before the frame is fully bonded together, which Collier said made construction pretty tricky. Basically it had to be assembled loose for size, then pulled apart and welded together. Reassembled loose to check for final fit, sent off for powdercoating, brought back for tube prep and then bonded together. This frame ended up right around 3lbs.
Are they going to do more like this?
Collier: “I’m feeling it out, we’re not sure yet. I’m mostly interested in metal, particularly steel, and I want to get better at titanium. We’ll see what kind of response we get.”