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I've been riding my Luna Z1 with Bafang Ultra for 2+ years now without the gear shift sensor, and no brake motor cutoffs. No problems.

He did purchase the steel gears from GBK.

He is running Mobil SHC. - I have been running Cornhead for two years.

My friend just this weekend installed the quiet gears in his Ultra (CANBUS) which was very noisy. Now his Ultra runs near silent. YMMV.

Oh yeah, I'vebeen working him on that! He's got that primitive rear cogs and derailleur thingy! :)

My riding partner has ridden a Sondors Rockstar with a Bafang Ultra (CANBUS) for the last three years. We've been riding together about 4 times per week. I've always teased him about the excessive motor noise that his Ultra Motor makes. We both ride with SENA Bluetooth communicator helmets and I...

Looks like a Hailong battery which is good. They are widely available.

I don't know anything about those bikes, but on thier parts page it looks like they use the "KT" controllers which are ubiquitous and easily sourced. That's a good thing.

Why don't you share the make, model, and price, and maybe some other members that purchased that make or model can give you some specific insight?

congrats. That motor is a lot of fun.

I almost ride every day, weather permitting. I ride 70% with my my neighbor who has a comaparable eMTB, and 30% alone.

Drunk post much?

Ha Ha! I was Googling "PUI" thinking it was a medical term like "Pulmonary" something or other. :)

What's a "PUI"?

My last "brewery crawl" about two months ago, cost my ribs dearly.

Have at it! It is a blast!

6/20/24 - Update To Orignial Thread A few months ago I replaced the 16T rear cog with a 13T rear cog to achieve a more desired gear ratio. I wanted more top end. The change was nice, more top with some still serious climbing ability. After a few months of riding, the 13T cog broke in two. I...

Nice to know, Thanks Ravi.

Pretty sure it only comes in one thickness. It may have been defective, but I'm going to assume it's just "anemic" for the continued streess of the mid drive Bafang Ultra and stick with the more substantial 16T cog. I've got a 40T Chainring now, so to get back to the same Chainring/Cog ratio I...

Correctomundo.