Someone suggest the ti bike should have its own thread -- so here it goes.
Ti bikes always mean something special to me, so now that I am going at it, I wasn't going to skip ti...
And several months into the project, I have a finished product. I call it the "Eternity". At first glance, there is nothing special about it, but that was deliberate. Ti bikes should have a classic look. Tapered head tube and top tube, oversized downtube, PF30, were the key features.
As I have a personal weakness for ISP, I had one made on this as well. Geometry mimicks the carbon bike, except with a slightly slacker seat angle (due to no-offset seatpost) and slightly longer top tube to compensate.
The cable routing is similar to the carbon bike but since Ti can't be made into a monocoque, I had to do some thinking about how to route the rear shifting cable. Intially I thought about an external hook along the seat tube cluster but decided against it for the sake of big-thighed riders. In the end, I decided to route it through the seat tube. A tiny (2.4mm ID) ti tube welded inside, against which the cable slides, was the answer. The tube had to be strengthened here. The cable stopper near the rear dropout was hidden (in side view) right behind the seat tube. See pic below.
Dropouts were a main head ache. Light, beautiful, affordable, seems I can only pick 1 out of the 3 with any one option. I have some wing'ed equivalent of the Lynskey Shamrock dropout, but ended up not using it.
For riding comfort, I have opted for an 28.6 seat tube with a 31.8 topper (which is butted externally so OD is 30.4~31.
. For big riders, it will probably be better to go with 31.8 seat tube with a 34.8 topper.
The frame came in at around 1450g, which I am happy with, because firstly it's an ISP frame, and secondly, I know for a bit extra cost, I can have the main tubes butted to save 100g.
Here are some larger pics: https://c9kpjg.sn2.livefilestore.com/y1 ... jpg?psid=1https://c9kpjg.sn2.livefilestore.com/y1 ... jpg?psid=1https://c9kpjg.sn2.livefilestore.com/y1 ... jpg?psid=1
Fast falcons: http://www.youtube.com/watch?v=j3mTPEuFcWk
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