Coast?
Posted by OttawaBob@reddit | ebikes | View on Reddit | 13 comments
Really dumb question here. Please forgive me.
Just got a Jasion EB5 bike and have tried it out a couple times. What I don’t understand or maybe I am doing wrong, is the bike does not seem to want to coast. Every time I stop pedaling the bike slows down quickly l and does not really want to coast at all.
Is there something I’m doing wrong or is that the way this bike is supposed to act?
Thank you.
stormdelta@reddit
/u/vinceherman has the right of it.
If you had a direct drive hub motor, the drag would be normal, though some setups can offset it with virtual freewheeling.
But on a geared hub like yours, you shouldn't be experiencing any extra drag from the hub. Some of it might be psychological if going immediately from assist to no assist, but you can test that by turning off assist and seeing how it feels to coast after pedaling.
Definitely check to makes sure nothing on the wheel or brakes is rubbing by lifting the bike and spinning the wheel (or putting it on a stand / turning it upside down).
Craftman780@reddit
I've got the EB5 myself and love it! Just got 2k on mine! I made her a piece of work. Mirrors, blinkers, a removable cargo rack with folding crate.
e1p1@reddit
But what's your experience regarding what the original poster asked about? Do you find a lot of drag when not peddling?
Craftman780@reddit
Drag? No. Resistance when pedaling? Yes. Especially when dead. Pedaling a dead ebike sucks and has a lot of resistance which is annoying
vaxination@reddit
did you check you breaks when you unpacked it? mine rubbed from the factory, but they include the allen wrenches you need to adjust them.
atlasraven@reddit
Came here to say that, mine does this. Flip your bike over. You should be able to spin your front wheel with little resistance.
MaxTrixLe@reddit
Ebike hub motor wheels have a good amount of spin resistance but it should not immediately slow you down, unless you’re on a flat or uphill incline. Most e-bikes are near impossible to pedal without motor assistance.
Ok_Incident8962@reddit
Check your hubs, they may be overtightened and the bearings binding. Also, upgrade the derailleur right away, that is going to be really sloppy shifting
chrispark70@reddit
My ebike was behaving in this way when I first got it, but it appears to have broken in and doesn't do it anymore. There was definitely something slowing down the bike more than is usual. Maybe globs of grease in the IGH.
vinceherman@reddit
The EB five uses a geared hub motor. My understanding is that these do not have regenerative breaking. That would’ve been my first guess. I would check and see if the brakes are rubbing a bit or if there’s other high resistance on either of the wheels. Pick the front wheel up off the ground and spin it by hand. Does it cost freely. Pick the rear wheel up off the ground and spin it by hand. Does it come to a stop quickly or does it spin freely?
Archetype_C-S-F@reddit
Good advice. If you do see that your wheel does not freely spin, and you have quick release, undo the clamp, use your other hand to move the wheel around left/right while it is still attached to the bike, and reclamp.
The alignment of the wheel and axel is important when it's clamped down.
When I put my front wheel on my MTB, I have to reclamp 2-3 times to ensure the disk brakes don't rub the pads on the frame.
rewt127@reddit
Its a mix likely of regenerative braking and the friction inevitable in a motorized system.
You are gonna have to ride it like a motorcycle. Always on the throttle (pedals) and use engine braking for general slowing. And then brakes when you need to come to a complete stop.
Tottington123@reddit
from my understanding and how mine works, its a pedal assist so you pedal and the motor picks up so you no longer need to put in effort the second you stop pedaling the assist also stops, for mine there is a throttle switch and if i hit that i not longer need to pedal and the motor does all the work, does yours have a throttle switch or is it just pedal assisted?