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spotter
Don't think I've posted my tandem on here. I made this last year when it was quite clear my first DIY-tandem I made with my friend was a very fun proof of concept but severely lacking in the performance sector.
I got my hands on a Kona Sutra frame that had cracks in the welds were the seatstays joined the seattube. Decided it was the perfect base for a new tandem so I chopped off the rear triangle.
I also got my hands on a DialledBikes ssmtb-frame which wasn't interesting in any way but it had an EBB. Was also pleasantly surprised when the EBB itself was a Phil Wood unit. This frame was cracked in the driveside dropout.
I only used the seattube and bb-shell off of the DialledBikes frame and proceeded to order some tubes. Decided on a Rodriguez style "double diamond double miter" and got to work.
Still a work in progress as I haven't had the time to paint the frameset but looks quite good built up. Bothers me a bit that I didn't just make a properly long stoker toptube but I chose 72cm in the heat of the moment. 76cm would've been better suited for when two 182cm long riders want to go smash a brevet or overnighter camping. It's a better fit for my 167cm tall girlfriend with a longer stem.
Yes, the EBB is unconventionally in the rear but couldn't be bothered to move the bb-shells around. Works fine like this. Just bought a tandem crankset so the stokers driveside crank won't be as crowded with a 46-46-34 ring setup.