|
|
|
|
#106
03-19-2007, 06:22 PM
|
||||
|
||||
|
Willits calls that their sculpted seat post collar and it is an upgrade. Never had a problem with an integrated seat binder bolt - even on the tandem - but the designs are a variety.
Jared said that they could build the road frame with a straight top tube and the B2 rear triangle. Then it would look much like the Terraplane, only in Ti.
__________________
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE. 
|
|
#107
03-19-2007, 06:26 PM
|
|||
|
|||
|
ok, ok, if I had a nickel for every bolt . . .
you want to bike to look like a Kirk, but--oh, never mind. . . later, I'm outa here. it's been a great thread, thanks to the masters who have graced us with their thoughts.
|
|
#108
03-19-2007, 06:29 PM
|
||||
|
||||
|
No, I don't want the bike to look like a Kirk, but I can admire the appeal of the seat stays. Different designs are rarely born without inspiration from outside. I only compare to the Terraplane because that is the bike that seems to be catching everyone's eye right now -- and very few are familiar with Willits' new road frame.
__________________
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.
|
|
#110
03-19-2007, 09:01 PM
|
||||
|
||||
|
Quote:
|
|
#111
03-20-2007, 10:30 AM
|
|||
|
|||
|
dave thompson - may i say, that i love your reincarnated kirk
 separately, check out the curved seat stays on this smooth rider: http://www.dahon.com/us/smoothhound.htm
|
|
#112
03-20-2007, 01:56 PM
|
||||
|
||||
|
I don't see how curved stays can have any effect on comfort. It would seem to be fairly easy to place the frame in some sort of jig and apply pressure at the dropouts and measure any upward movement. My guess is that stays from Litespeeds slight curve to Seven's hourglass to Kirk's major S-bend would measure the same for all intents and purposes. Serotta's bearing at the dropout will at least allow a tiny bit of movement. I think the placebo effect is what is going on here. Want a more comfy ride? Slap on some 25C tires.
Tim McTeague
|
|
#113
03-20-2007, 02:47 PM
|
|||
|
|||
|
Tim,
The frequency of the force applied at the dropout needs to be considered. Its like an RLC circuit or such. The terraplane stays (or any other non-straight seat stays) are changing the parameters of the damped resonance. But I agree, with the proper jig you should be able to measure the resulting change in frequency response/transfer function. Kent
|
|
#114
03-20-2007, 03:53 PM
|
||||
|
||||
|
Quote:
|
|
#115
03-20-2007, 04:25 PM
|
||||
|
||||
|
Quote:
Back in the Hors Cat days I made a device to measure rear wheel travel on any given frame. Bolt it on and ride and check the amount of travel. Simple stuff that was done all those years ago. I used it to fine tune the bends of the Hors Cat and I used a similar tool to fine tune the bends on my current offerings. The amount of travel was/is measurable, repeatable, and substantial. The Hors got about 12mm max and the Terraplane gets about 1/2 of that. A standard straight stay bike will measure at less that 1mm. Many other curved stay bikes were measured and cataloged. Most had little to no travel....give or take 1mm or less. That includes Litespeeds and Ritcheys and the such. I have a self imposed rule. I NEVER comment on my own work in this forum. I feel it's Serotta's house and I'm a guest and should act like one. I'm breaking my own rule now for what I think is the first time in all the years I've been posting here.......... I get pretty frustrated by folks that have never ridden one of my frames telling anyone that will listen what it will or won't do. If you ride one built for your size and weight and it doesn't do as it should then I'll expect to hear that I'm full of crap and you'd be right. I would ask that until then that you have an open mind and not dismiss what you clearly don't understand. I'm sorry if I've over stepped some boundary with this post. I apologize to Serotta for addressing my own work here. Thanks for reading. Dave
|
|
#116
03-20-2007, 04:33 PM
|
|||
|
|||
|
Quote:
Sincerely,
|
|
#117
03-20-2007, 04:44 PM
|
||||
|
||||
|
dave's bike rock
end of story oh and about that placebo thing and the 25mm tires- you are selling yourself short- MY kirk can run 32s!!!!!! jason
__________________
Jason©™®
|
|
#118
03-20-2007, 05:06 PM
|
|||
|
|||
|
David,
thanks for the diplomatic, respectful, and thought-provoking clarification. Now, just one follow-up, and it's not about your bikes but stays in general. . . (BTW, I am fully convinced, although I've never ridden a Kirk, that your design does what everyone says, and that's not only because everyone says so, but because I've ridden enough bikes to know that they do behave very differently according to design.) But, hmm, it's interesting . . . what about other materials, and they way they might behave as used in stays? Did your testing delve into that sort of comparison, or were you just focused on steel? best, mw
|
|
#119
03-20-2007, 05:08 PM
|
|||
|
|||
|
Please close this thread. It's been great, not too sure now. DK, you are a gentleman. Obi-wan Serrota, thanks for hosting. Ciao!
|
|
#120
03-20-2007, 05:15 PM
|
|||
|
|||
|
Quote:
No reason to bring the whole conversation to a screeching halt IMO. Louis
|
 |
|
|
Linear Mode
