Amazon Stops Selling Illegal eMotos in CA

[DDBB]

I have a bafang ultra motor and a push down to accelerate thumb throttle on the left handlebar. It's VERY touchy and difficult to modulate on bumpy roads. I rarely use it because it's a mid drive and I'm trying to get good longevity from the chain and sprockets. The sudden torque on the chain after hitting a bump is not good when using the throttle.. That said, sometimes it's fun to just throttle up a big hill. The bike easily hits 35mph with the throttle but pedaling I can only get to around 25mph before my legs are spinning too fast in 9th gear.

 

[Gionnirocket]

The stock Bafang thumb throttle is a terd and the first thing I replaced on my Ultra and BBS02B bikes.
Since my Ultra bike has a Rohloff twist shifter on the right, I installed a left hand half twist throttle. So easy to modulate just the amount of power desired.

 

[DDBB]

I'm glad to hear it's not just me with the Bafang thumb throttle!

 

[PCeBiker]

The half twist throttle allows you to wrap two fingers and your thumb around the twist part of the throttle, with the other two fingers wrapped around the grip.

That Really helps to keep your hand and throttle steady when the handlebars are bouncing.

Way less strain on your thumb as well.

 

[PedalUma]

I have a bafang ultra motor and a push down to accelerate thumb throttle on the left handlebar. It's VERY touchy and difficult to modulate on bumpy roads. I rarely use it because it's a mid drive and I'm trying to get good longevity from the chain and sprockets. The sudden torque on the chain after hitting a bump is not good when using the throttle.. That said, sometimes it's fun to just throttle up a big hill. The bike easily hits 35mph with the throttle but pedaling I can only get to around 25mph before my legs are spinning too fast in 9th gear.

What size it the chainring? A larger one could prevent spinning out, taking pressure off the small higher geared rear cogs. In 2018 I had a mid-drive ghost pedaling Bafang mid-drive that just ate through chains and cogs. I thought it was cool before I knew anything about torque sensors. It was fast but had no feel. And the motor was heavy. It was a blunt force instrument, unrefined. Later I went for an HD which was even worse. A thrill on the first ride, but I got rid of it after three weeks and went for a smaller, lighter torque sensor motor with no throttle.

 

[DDBB]

I did buy a larger chainring but it was poor quality aluminum and there's an issue with clearance of the chain stay as well. I'm getting over 2,000mi. on a chain with the stock setup and I'm rarely going faster than 25mph so I just live with it but I think a quality chain ring with a few less teeth than the oversized one I bought would be the ticket. I went back and forth with Bafang in China about getting a proper oversized chainring but in the end they just stopped communicating with me. I'm still on the original cassette with 3,500mi. on the bike now but I do avoid using 9th for long periods

 

[Gionnirocket]

What size it the chainring? A larger one could prevent spinning out, taking pressure off the small higher geared rear cogs. In 2018 I had a mid-drive ghost pedaling Bafang mid-drive that just ate through chains and cogs. I thought it was cool before I knew anything about torque sensors. It was fast but had no feel. And the motor was heavy. It was a blunt force instrument, unrefined. Later I went for an HD which was even worse. A thrill on the first ride, but I got rid of it after three weeks and went for a smaller, lighter torque sensor motor with no throttle.

By your own admission you didn't know how to program the Bafang motors you had and a large chainring is more stress on the motor and your legs if you want to participate.
So pick your poison
Just sayin'

 

[PedalUma]

@Gionnirocket, I am not posing as a person who knows everything and is perfect. I screw up all the time. I just try to embrace and laugh at my screw ups. I had one BBS02 bike that I covered with carbon fiber look heat shrink wrap years ago, like a buss boy puts on the rear wing on a two-door Honda. I laugh at that. Yes, I did not know about programing when I started or how to shorten wires. But I did put myself out there with all the uncertainty and try. That bike was $300 from Dick's. I caught a eff-up today. As replacing a freewheel on one of my own bikes, I saw that I had gone over a jockey wheel guide, not under it. I couldn't see it until I flipped the bike to remove the wheel. By the way, putting a wing on a front wheel drive car is just dumb. It will kick in at 130 mph to lift the front end.

 

[DDBB]

So now I have to take the spoiler off my 91' Honda CRX? geeez

 

[stompandgo]

So now I have to take the spoiler off my 91' Honda CRX? geeez

Post a pic before you do this, ok?

 

[Gionnirocket]

So now I have to take the spoiler off my 91' Honda CRX? geeez

If you do 130mph in a crx... you may deserve whatever happens.

@Gionnirocket, I am not posing as a person who knows everything and is perfect. I screw up all the time. I just try to embrace and laugh at my screw ups. I had one BBS02 bike that I covered with carbon fiber look heat shrink wrap years ago, like a buss boy puts on the rear wing on a two-door Honda. I laugh at that. Yes, I did not know about programing when I started or how to shorten wires. But I did put myself out there with all the uncertainty and try. That bike was $300 from Dick's. I caught a eff-up today. As replacing a freewheel on one of my own bikes, I saw that I had gone over a jockey wheel guide, not under it. I couldn't see it until I flipped the bike to remove the wheel. By the way, putting a wing on a front wheel drive car is just dumb. It will kick in at 130 mph to lift the front end.

None of us are... but you often post similarly about the BBS* motors and at the time you had them they were beyond your skillset to set up properly.
I didn't need to put a large chainring on to eliminate ghost pedaling and I didn't destroy any drive train parts either. 3k mi from a X8 chain for example.
How would your current motor of choice fair out of the box with no programming?
The Bafangs were notoriously aggressive out of the box. But with a few tweaks (easy programming being their strong point) very user friendly and far more reliable than the TDZ you were hard over at the time.
jus' jus' sayin'

 

[DDBB]

I'd love to find a simple dongle or device to program my CANBUS Bafang ultra.

 

[PedalUma]

The DM02 motors I use take a ton of programing. Points taken. M. Robinson had a good point too of using extra-beefy motors that were down tuned on his cargo bikes.
It is so the bus boy can have a picnic.