I guess I really like knowing those details and researching and learning 
about frame design and such. I spent 31 years in the high tech metals 
industry ( Rocket Engines) doing exactly this, so it comes natural to want 
to understand. On the customs I have bought I provided key 
design characteristics for the frame and selected the tubing to meet my 
needs and planned use.  To me that was a best part of buying a custom 
 frame.

~mike
Carlsbad Ca.

 

On Friday, September 7, 2012 9:38:41 PM UTC-7, JimD wrote:
>
> Sure, that's one way to go about it. 
>
> Me, I'm not much of an amateur bike designer.
> I'm not so much interested in picking the tubes as having the person that 
> designs the bike 
> making such determinations.
>
> When I got my Riv custom I had a conversation with Grant about my riding. 
> He took care of the design.
> He's the 'pro from Dover' when it comes to Rivendell bikes. 
> My Riv custom is the best bike I've ever ridden.
>
> Richard Sachs has been known to use the term 'gestalt' in regards to bike 
> designs. I enjoy hearing all the discussions
> about 'feeds and speeds' but compared to the folks who make their living 
> making these things I'm a babe in the woods.
>
> That's my story and I'm sticking to it.
>
> -JImD
>
>
> On Sep 7, 2012, at 9:03 PM, Michael_S wrote:
>
> I think it helps you pick the bike that you want. Touring, the Atlantis 
> has thicker tubes, fast road... the Roadeo has thinner tubes... Bomber 
> trail bike... the Bombadil has the thickest.   You factor in your body 
> weight, what you want to carry and pick the bike that meets those needs. 
> Diameter and wall thickness still matter... it's the other stuff that is 
> less important. Although heat treating is important on thin tubes... on the 
> rest it is inconsequential. 
>
> As most metallurgist's will tell you it's usually joints 
> and manufacturing flaws that fail, not the parent material if it is 
> designed correctly. 
>
> ~mike
> Carlsbad Ca.
>
>
>

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