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  #1261  
Old 01-18-2019, 04:49 AM
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weisan weisan is online now
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Quote:
Originally Posted by PaMtbRider View Post
Dave, the idea of terraplane stays on a hardtail mountain bike was mentioned in another thread. Is this something you ever considered or looked into? I'm guessing a high volume mountain bike tire would lessen the benefits of the stays in that application.
i would imagine it would require a whole different series of tests and tweaking the design to meet the demands of mtb riding which is so different from road riding.
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  #1262  
Old 01-18-2019, 09:06 AM
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David Kirk David Kirk is offline
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Originally Posted by PaMtbRider View Post
Dave, the idea of terraplane stays on a hardtail mountain bike was mentioned in another thread. Is this something you ever considered or looked into? I'm guessing a high volume mountain bike tire would lessen the benefits of the stays in that application.
Yes - I've done work in this direction and your guess is spot on. The tall soft tire largely negates any benefit of the stays.

Think of it this way - the tire is a soft air spring and the curved stays are a stiff spring and when you put the stiff spring on top of the soft spring and push down you predictably see the soft spring deflect before the stiff spring moves. This means that the stays would need to be MUCH softer (only slightly stiffer than the soft tire) for them to do the job. This isn't practical with a bent stay and even if it was it would move so much that it would need to have some damping to control its rebound.

So in the end it just doesn't make sense. The system works very well with a firmer tire and that's where it will stay.

Thanks for the question.

dave
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  #1263  
Old 01-18-2019, 09:50 AM
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David Kirk David Kirk is offline
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Part II of my interview with Patrick Brady for his podcast 'The Pull' has been made live. I hope can make time to give it a listen.

dave

http://redkiteprayer.com/2019/01/the...-kirk-part-ii/
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  #1264  
Old 01-19-2019, 05:44 PM
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572cv 572cv is offline
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Hi Dave, the interview was hotly anticipated, and has already generated much interest. Thanks for taking the time to visit with “Padraig” and giving us much to chew on. Cheers!


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  #1265  
Old 01-22-2019, 02:56 PM
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David Kirk David Kirk is offline
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A JK Special lugged frameset hot off the presses and going into a box so that Joe Bell can do his thing.

dave

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  #1266  
Old 01-22-2019, 09:44 PM
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Originally Posted by David Kirk View Post
A JK Special lugged frameset hot off the presses and going into a box so that Joe Bell can do his thing.

dave

Maybe someone can ask Joe pal to paint it exactly what it looks like...er...unpainted.
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  #1267  
Old 01-22-2019, 10:53 PM
bob heinatz bob heinatz is offline
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Wow, that is my frame! It does look cool in it's natural state but JB will add his magic.
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  #1268  
Old 01-23-2019, 12:30 AM
Clean39T Clean39T is online now
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Originally Posted by bob heinatz View Post
Wow, that is my frame! It does look cool in it's natural state but JB will add his magic.
Sweet! Congrats!!
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  #1269  
Old 01-23-2019, 05:22 PM
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Hilltopperny Hilltopperny is offline
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Originally Posted by bob heinatz View Post
Wow, that is my frame! It does look cool in it's natural state but JB will add his magic.
Can't wait to see what you guys came up with for a paint scheme and congratulations!

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  #1270  
Old 01-23-2019, 09:39 PM
weaponsgrade weaponsgrade is online now
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Originally Posted by bob heinatz View Post
Wow, that is my frame! It does look cool in it's natural state but JB will add his magic.
Congrats. It looks so crisp and clean.
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  #1271  
Old 01-25-2019, 01:36 PM
rjames86 rjames86 is offline
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My new Kirk is all built up and ready to hit the road. I couldn't be more excited for it. Took it out for a short ride this morning to get some shots of the build.
Attached Images
File Type: jpg P1250014 (2).jpg (135.2 KB, 230 views)
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  #1272  
Old 01-25-2019, 04:45 PM
PaMtbRider PaMtbRider is offline
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That's a great looking bike. You should get many years of enjoyment out of it.
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  #1273  
Old 01-25-2019, 06:50 PM
503m979 503m979 is offline
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Originally Posted by rjames86 View Post
My new Kirk is all built up and ready to hit the road. I couldn't be more excited for it. Took it out for a short ride this morning to get some shots of the build.
It looks better in the wild than it did in the professional shots even. Gorgeous. Seriously beautiful bike. Wow.
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  #1274  
Old 01-31-2019, 04:03 PM
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David Kirk David Kirk is offline
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I was looking through old photos for something else and stumbled across this oldie but goodie from 2007. That was a lot of years and bikes ago.

dave

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  #1275  
Old 02-07-2019, 11:57 AM
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David Kirk David Kirk is offline
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A photo from way back in 2005 - the original Terraplane prototype.

dave

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