Recent content by Bad Mechanic

I owned one and chose to sell it before the motor had issues. With the bottom bracket integrated into the motor, it's not a question of if but when there will be issues, and I can't have a $1,500 sword hanging over my head if the motor dies. Not having serviceable components if acceptable if...

I absolutely wouldn't buy a Shimano powered ebike. They have a no repair policy, so if anything happens outside of warranty you're buying a new one. At least Bosch and Yamaha can be serviced by third parties to an extent.

Would you be willing to send me the STL or IGES file for that? It would save me time modeling it myself.

That makes a lot of sense.

How did you make that? I would have guessed you 3D printed something, but that doesn't look printed.

Thanks! It's on my list of stuff to do. I suspect they did it to slow down wear on the chainring, but I'd rather just replace my chainring more often.

Correct.

The chainring is located against the bottom bracket by the chainring lock ring, so the extra couple millimeters of crank axle end up on the non-drive side where the adjustment collar has plenty of travel to take up the extra length. In theory the left crank arm is spaced further out by a couple...

Picture Bike / Product Year: 2021 Manufacturer Shimano Model EW-EN100 Asking Price 70 Location MD, USA Description Shimano EW-EN100 brand new take off. This either let's you remove the LCD control abd also enables Bluetooth connectivity.

Same, or at least a 160. Hopefully the new cranks from NSB prove to be compatible.

Your diagram looks like the Dyname 3.0. On the Dyname 4.0 I don't see an exposed motor bearing. Or are you saying the drive chain cover itself doesn't seal against the motor casing?

Not by all that much.

Stay away from Shimano motors. They are not serviceable, and if the motor fails you're buying a new one.

-ish. The motor bearings sit inside a sealed space which houses the drive chain connecting the motor to the drive cog. So an contamination would need to make it's way through the drive cog's axle bearings, and then through the motor's bearings.

If you want durability, then you want Rocky Mountain's Dyname 4. It uses a standard bottom bracket, which can easily be serviced to replaced. The motor's cog sits higher in the frame and is protected by a cover with does a good job of keeping water and dirt out. The cog is driven by the motor...