Hi everyone, I finally bought a BMC Alpenchallenge AMP City Two, size L. It's a beast
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For those interested, I could easily fit a front child seat, the Thule Yepp Nexxt Mini. I had no issue putting the adapter after removing two of the three spacers. You lose some turning radius (like all front seats) but it's still really manageable. However, my daughter is almost 15 kgs, and I soon will need a rear seat - and the seat tube has only 7cm left above the battery, where I need 7,5 cm to 11 cm depending on the child seat brands...
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I've asked BMC and Tubus retailers which rear rack could replace the included Tubus Fly Evo, as it has only 18 kg of maximum load. I need 25 or more to load a child seat on it, but all the racks I find must be installed with two roundstays whereas the Fly Evo has only one. I guess I need some clever adapters...
See here
https://www.bmc-switzerland.com/media/downloads/download/Alpenchallenge_AMP_Rack.pdf
I should buy something like this for replacement, which needs two roundstays :
https://www.tubus.com/en/products/rear-carriers/tubus-product/vega-classic
I still don't how to replace one with the other... I've contacted my dealer, Tubus and BMC. I'll let you know if I succeed, and feel free to answer if you have an idea ! Thank you