Hi,
just 3 weeks have passed since I build it, so my experience isn't much. Still I am looking for some parts, f.e. crankset, couse I ride 1x 42t front (with 11-25 cassette).
I have comparision only to one alloy road bike which I sell a year ago (and two carbon frames but MTB - ICAN and Pro-Mance). Tantan frame seems to be well built, much comfortable than alloy for sure.
Avg speed is very similar. I don't expected much difference since it is "only" aero frame. Rest of the set isn't so aero
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The stiffness is enough for my weight at 69-70kg.
I'm riding alloy wheels with rims DT RR421 with Conti GP5000 28mm tubeless tires. Front fork can manage with 32mm tire for sure, but rear triangle I think can hold even 35mm.
I had an issue with slipping seatpost, but electrical tape helped in it. I like the headtube angle, it is more like old MTB
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At last without hands riding is easy. The old bike was very nervous.
This frame is 57cm long and 53cm high. I am 180 tall with 85cm inseam. The size is max I could ride. I don't like small frames. Big frame and slack (as for road bike) head angle with short stem - perfect for me.
Overall I don't regret the purchase, but contact with Tantan wasn't the best
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On the occasion with frame I bought Tantan aero rims 25x55mm 24H (18,5-19 mm inner width) which are waiting for rest of parts. I heard that ZTTO is to release road disc hubs with ratchet system called R2 - info from Aliexpress Ztto shop.
Maybe it is worth waiting...