motomoto said:Nice job on your build. I think that this is the best way to do the mid drive thing. A couple of reductions, and you
have all the gears in the back to match all the conditions. Uphill, downhill, it doesn't matter, you have the right
gear for the occasion.
Whiplash said:Exactly! !
crossbreak said:i hope your sprocket cassette holds up longer than mine. I used a shimano 9-speed cassette 32T-11T with shimano chain on my 1000W middrive test setup. It holded up for about 300km till the 11T sprocket started to slip. The 12T slipped followed 600km later, then I bought a 9-speed SRAM gear hub. It holds up well (about 1500km-2000km yet, my odo sadly was reset).
I hope you have an odometer on your bike. Could you be so keen to keep an eye on how many miles your cassette/chain survives under these circumstances? I plan for another bike with derailleur, that's why I ask. I plan to only use 13T and larger because of my bad experiences. Maybe your SRAM cassette is better quality?
pff7 said:Love it, love it!!!! so nice----by the looks of it seems like it would pedal just like a regular bike w/o power? Excluding weight of motor, drivetrain,battery,ect. seems your freewheel would make the bike pedal just normally, am I right?
mauimart said:pff7 said:Love it, love it!!!! so nice----by the looks of it seems like it would pedal just like a regular bike w/o power? Excluding weight of motor, drivetrain,battery,ect. seems your freewheel would make the bike pedal just normally, am I right?
Yes, the bike functions very close to a non-ebike with the biggest difference being the weight. It's 63 lbs now (down from 65 with the new fork ) which is 26 lbs more than what it weighed prior to conversion. There are two freewheels, one on the jackshaft and the other on the cassette so yes it does pedal normally and you don't have to pedal along with the motor if you choose not to. And I do pedal quite a bit. For example a recent ride went like this:
35.7 mi
6.17 Ah
430 Wh
12 Wh/mi
16.9 avg. sp.
2hr6min
mauimart said:pff7 said:Love it, love it!!!! so nice----by the looks of it seems like it would pedal just like a regular bike w/o power? Excluding weight of motor, drivetrain,battery,ect. seems your freewheel would make the bike pedal just normally, am I right?
Yes, the bike functions very close to a non-ebike with the biggest difference being the weight. It's 63 lbs now (down from 65 with the new fork ) which is 26 lbs more than what it weighed prior to conversion. There are two freewheels, one on the jackshaft and the other on the cassette so yes it does pedal normally and you don't have to pedal along with the motor if you choose not to. And I do pedal quite a bit. For example a recent ride went like this:
35.7 mi
6.17 Ah
430 Wh
12 Wh/mi
16.9 avg. sp.
2hr6min
h0tr0d said:.
Are your wh/mi correct? if so, amazing figure!!! :wink:
Is your turnigy "stock" or heavily modded?
pff7 said:But when you pedal w/o using motor, in other words with no throttle, when pedaling are you turning the motor or is the motor turning via drive chain when you pedal? When your applying throttle I assume freewheel let's you keep feet on pedals without turning, but does it work vice versa? And if motor turns via only pedal power I'm assuming from what you stated that the motor turns very easily then.