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Hello, I have a 2020 BMC AMP Alpenchallenge City Two bike, equipped from the start with DT Swiss R500db rims (it's written on it "Rim dimension 622 x 22, ERD 596mm"). The hub is Shimano Nexus Inter 5E. One of the spokes broke inside the nipple (after only 1200 kms, but that's not my point yet)...

Hi, sorry for the very late reply. I bought the AMP City Two electric bike too. I, too, had back pain issues, and reversing the stem made them go. I like the Nexus 5 IGH, but I never used any other IGH but the Nexus 7 on two diffferent "muscle" bikes ; I do only city rides, and it's comfy. I had...

Thank your very much for this thorough answer. I will try turning the stem upside down, hoping it will be enough. I agree the handlebars are a bit wide too, but I'm not that confident using a hacksaw on this superb bike 😰 and maybe I won't feel like it's still an issue once I'm done with the...

Hi, I chose my AMP Alpenchallenge City Two bike in 61cm size. However, after some time driving (say 1h to 1h30), I find it tiring for my shoulders. I've been advised replacing my stem by a shorter one. Is there anything I should be careful to ? May I choose any stem (of the right size) ? Does...

Hello, I've been asked a couple times how I managed to put a child seat on my BMC Alpenchallenge AMP bike. So here's a HOWTO. Please correct my mistakes (language or technical) if I'm wrong, english is not my mother tongue and I'm new to technical terms :) Front seat : I bought a Thule Yepp...

I see. It seems similar to this, which I fear would not hold very tightly (the seat stays are not fully round). However, I found something very interesting that could work with minimal effort and cost, a 10 € seat post clamp replacement with rack attachments ...

Have you fitted it on an Alpenchallenge ? Do you have mudguards on it ? If so, how did you attach it to the only screw hole through the mudguard (the rack needs two roundstays) ?

Hello, Thanks ! I found the specific SKU814 kit for BMC Alpenchallenge AMP : https://oldmanmountain.com/wp-content/uploads/2019/09/fitkit-parts-with-names-1.jpg I don't know how this would fit my bike, unless I remove the mudguard (which I want to keep), as there is only one screw hole through...

Hi everyone, I finally bought a BMC Alpenchallenge AMP City Two, size L. It's a beast :cool: 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...

Thanks for your answers ! Well, nice choice, it's a french brand ;) I did look at it, but didn't select it because it is really heavier (26 kgs, almost 50% more than the BMC). Plus the BMC's transmission seems sturdier (carbon gates and no chain tensioner). Yes, this one is really a great...

Ok I see, thank you. So this is mandatory with such a frame. Isn't it weird designing an ebike frame with IGH that way ? Doesn't it look like a design error, or reusing a frame not meant for IGH in the first place maybe for cost reducing (which seems odd given the need to adapt the frame to the...

Hi, I noticed a new ebike built by/for the online dealer Alltricks in France. Brand is unknown and custom (Bicyklet). https://www.alltricks.fr/F-187976-velo-ville_voyage_vtc/P-1245292-velo_de_ville_electrique_bicyklet_jacques_shimano_alfine_8v_500_wh_700_mm_noir_2020 Why would they put a...

Sorry for my misunderstanding and thanks for taking the time answering me. I may use a trailer for weekends yes, but unfortunately this isn't really handy if I have to leave one kid at school then go on with my commuting. I'm probably looking for something too versatile and no bike could fit...

Thank you for your feedback and opinion, interesting. I'm having difficulties finding other ebikes with an internal gear hub and a diamond frame not too heavy and not too pricey, that's why I was considering this bike. Your advice about having difficulties riding that low with a front child is...

Hi, I'm brand new to this forum so I hope I won't be annoying : sorry for any inconvenience ! I'm a french cyclist living in the Paris suburbs, and I'm considering buying my first ebike, the BMC Alpenchallenge AMP City Two, for commuting and getting rid of public transport. This bike because...