I've been working with Ti-Bikes on a tandem bike. Would like opinions on the frame and if I'm overlooking anything.
https://imgur.com/rCFCCNq

The bike will use SRAM AXS; Force Wide front derailleur w/frame clamp, 2x chainrings 50t/34t, Wide cranks, 10-36t cassette, Gates CDX 39t timing rings w/belt, 68mm wide T47 external bearing bottom bracket, eccentric front bottom bracket

Image

I don't know that much about tandem design, but this builder does Z-style couplers, which might be a nice upgrade vs. S&S.

oh, I didn't realize they offered that style of couplers. I'll have to ask them.

Did you consider the UDH standard (Universal Derailleur Hanger) ?
From my understanding of the drawing it doesn't look like to be.
And it is a good option to find easy replacement or eventually going with the new SRAM derailleurs.

Quote from: tandemrider on November 19, 2024, 08:44:27 PM
oh, I didn't realize they offered that style of couplers. I'll have to ask them.

They do offer them, but the z couplers don't come in a large enough size for the tubing used.

Quote from: carbonazza on November 23, 2024, 07:59:46 AM
Did you consider the UDH standard (Universal Derailleur Hanger) ?
From my understanding of the drawing it doesn't look like to be.
And it is a good option to find easy replacement or eventually going with the new SRAM derailleurs.

I did ask and they were able to switch it to UDH. Thanks for the suggestion.

Hi Tandemrider, is your ti tandem build complete? I'd be very happy to see pics and hear if you'd go for the same geo again. I've a aluminium/carbon race tandem from Tank Bicycles and as it doesn't have more than 25mm tire clearance, I'm interested in ti tandem frames.
Best Regards CycOps