With the battery removed, it's quite easy for me to lift and carry my bike up and down stairs unfolded - handhold indicated in red. The Helios can be carried with right arm straight. Would some sort of shoulder strap make carrying your next Fiido easier?
The X has 2 extra kgs, the D21 is already heavy as it is. The D21 is missing from the Fiido UK website, and it's out of stock in ElectroHeads and BicycleLand. On mybikescheme.co.uk it shows as pre-order, which is weird, and that site also feels a bit shady, and definitely don't want to get it on eBay. So I'm seriously considering the Ado Air 20, even though they're lying about the real weight of the bike and it's actually not 16kg, but 17.8kg, so same more or less same as the Fiido. I would actually love to get something like a Tenways CGO600, but they don't do S size or step-through, and it would be always on the way in my flat...
If the D21 does reappear, it too will likely be 1kg heavier with the new/more powerful motor as the D11 now has. I don't think it will though; the whole idea backfired badly by selling to those who otherwise would've bought an X.
You could always fit quick release pedals and a quick release/turning headset so the handlebar twists to be parallel to the frame. Then if the bike does need to sit in your hallway at least it'd be hard against a wall.
I'm considering getting one (45 degrees, for a narrower folded profile) for my (still unassembled) Dahon Espresso project, but if I do, I won't be able to install a Redshift ShockStop... also this raises the handlebar an inch or so.
I'd find not easily being able to lift a Fiido up and down stairs profoundly irritating, so it's a good job I don't have a Fiido... but if I did, I might look into making a foldaway low bar grip; set a new low bar.
It's something @saneagle uses/mentions from time to time. It may work with a Tenways, but I'm not sure it'd work with a C21/C22 though because, thinking more about it, the actual colour LCD display is physically integrated into the riser element of the stem.
You can fold the handlebars flat on any bike by replacing the screws on the stem clamp with quick release ones. It only works on convention 1 1/8" stem clamps, not on folding bikes. It might work on 1" quill-type stems.
A simple over priced front hub motor eapc , bar that it has a gates belt drive any PAS system will 99.99% be the usual cadence sensor and likely a not so user friendly speed controller.
The folding stem I mentioned in post #85 is for the older Espresso design frame with "free" fork "New old stock", which I could buy, but those levers could work with my present newer Espresso. Are those two levers on the same side? Do you have to loosen the top aswell, in order to turn the handbar sideways? You've been loosening and tightening those levers for awhile - have you noticed any wear of the threads?
Different stems have the screws in different directions. Some only have one screw, some have two from the same side, and some two from different sides, like mine.
Many local Taxi companies have estate cars and/or minibuses/8-seater vans for groups that you can easily chuck a full-sized bike in... nearly all have some on their fleet (even in central London), and they generally don't cost more to use... you just need to ask for one.
That has the same wheelbase as my Helios, looks like it'll ride pretty sweet. What's the rider weight limit? Can it cope with Rapid Fatso? Hope so - dangerous fatsos might stop buying Surrons...
Neat feature.
