Originally Posted by
secret_squirrel
Im no ebike expert but I believe the crack lag problem for hub motors has been mostly fixed by better sensors. There are aftermarket Brompton e-mods that have received favourable reviews with them.
Oh, good. Small wheels should have less of those problems in any case, since they rotate faster.
Originally Posted by
secret_squirrel
This was the original e-Birdy I believe,
https://road.cc/content/news/326-new...lectric-folder. went on sale a while later in the UK. Every so often one shows up on Ebay. The battery bag is a similar solution to the current e-Brompton - albeit the Brompton has the advantage of the bag being much lower down the frame, near the headtube which I imaging improves handling compared to the e-Birdy.
Right, the one I test rode had the battery in a similar bag (but could not have had a rear motor).
Originally Posted by
Jipe
All assisted folders face the weight increase problem, anybody willing an assisted folder must accept some weight increase.
Of course. The point was that it matters where that weight is placed. Placed in the wheel it doesn't affect the frame carrying capacity, but reduces suspension efficiency. Placed in the frame it counts towards the weight limits of the frame, which may have to be strengthened. (Perhaps the Pacific solution is fine, it isn't a downhill bike, after all.)
Originally Posted by
Jipe
I think it would be possible to integrate the Fazua crank motor in the Birdy frame. The Fazua solution weight only about 3.3kg in total (including a 252Wh battery).
The problem is that Fazua is an high end expensive solution meant for high end road bikes and the R&M Birdy is already pretty expensive, the Fazua assisted Birdy would probably become much too expensive ?
Yes, maybe this is possible, it would be a nice solution. The battery is half the capacity of what R&M normally uses, but some will be happy with that. And perhaps it is possible to mount two batteries. It's a completely different ecosystem though, they would lose some of the benefit they have now in that all R&M ebikes use Bosch motor systems.
Originally Posted by
Schwinnsta
That motor doesn't look compatible with the way the Birdy folds. And it's hard to judge the battery vs. frame when they don't say what the Wh capacity is. Apples vs. oranges. Sure such folding ebikes can be made, but a Birdy with crank motor and frame battery is another matter. Fazua seems the easiest solution, technically speaking. Business decisions are also another matter...
