One thing I didn't mention that is questioned a lot is range. I hear a lot of Youtube reviewers demanding from manufacturers bigger and bigger batteries, and that obviously comes at a significant weight penalty. Clearly the goal is to have 'just enough' juice for every ride.
Here's my experience:
I weigh 75KG kitted up. 6'4" on XL. Bike is an M10. I live in the UK and ride muddy trails, hills and forests, not jump parks. I like to head out on it for an hour during the week for a blast, and then do 2-3hrs on the odd weekend on trails with friends. Most important for me is that the bike is
light and fun and 'poppy'.
An hours heavy blast of 13km will cost me 30% of my inbuilt battery if I boost through the hills to get to the fun stuff and keep boosting back to the top a jump run. Gloopy mud. That is the highest usage.
25km for 2 hours (moving time) at Swinley trail park, riding with an analogue mate (thus slower) used 45% of main battery. Also, as you can see from the chart, sometimes I'm riding with the motor off. That is probably the key benefit of lightweight ebikes - The impact of a flat battery is not nearly as significant - It's not as if you're stranded. What will inevitably happen for the huge rides is as your anxiety for running out of juice increases, you'll put more effort in and increase the range.
I have the range extender on order, and thus could theoretically get 7h+ riding in a day, which is more than enough for me. I imagine riding with FF ebikes would dent that range significantly.
So for me, I'm very glad to only have a 360wh. In fact, I'd be happy if it were a touch smaller and can only imagine needing that range extender for those rare mammoth days. Also, the range extenders I've heard are compact and only 1.4kg or so and £450 in UK. Seems pretty reasonable to have a second in a rucksack if you're frequently traversing the Scottish highlands in a day.
Just my use-case, and hopefully useful to others wondering about range.
Key for graph:
3-Boost
2-Trail
1-Eco
Below 1 - Off
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