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  1. M

    Bafang M620 Ultra motor broken? Low torque problem. Best retailer for US?

    They had the 52v CANBUS version listed, which was the version I needed and what I ordered on their website. I just finally received an email from them saying that they had a miscount and only have the 48V version in stock. I'm going to get a refund. I appreciate that they finally got back to me...
  2. M

    Bafang M620 Ultra motor broken? Low torque problem. Best retailer for US?

    I decided I was so busy that I didn't have time to try to do the motor repair myself. So I ordered a full replacement motor on the morning of May 31st from California Ebike. I ordered from them because the price was similar to that of greenbikekit, but I thought I'd have better luck and...
  3. M

    Bafang M620 Ultra motor broken? Low torque problem. Best retailer for US?

    Thanks. I'm pretty sure I have the CANBUS version so I'd need a replacement motor to also be CANBUS, no? Also- someone wrote on Facebook where I posted this that I should just have the motor itself repaired. This person said the problem is almost certainly the stator or the controller board...
  4. M

    Bafang M620 Ultra motor broken? Low torque problem. Best retailer for US?

    My Rize RX 2021/2022, which has the 1000W 52V Bafang M620 motor, suddenly lost most of its torque. It still has some power, but on flat ground seems to go no faster than around 20mph, and it no longer has enough torque to go up steep hills. The amount of electricity that goes in, per the...
  5. M

    2022 - Top 12 Bafang Ultra M620 Ebikes

    No. On my Rize RX (2021-2022 version), when riding steep uphill with no wind, I can get, maybe, into the low 20s. Like 20-22 mph. With a serious wind it might struggle to reach 20 mph. This depends, of course, on how steep of a hill you're talking about. On a flat road, with no wind, if I'm...
  6. M

    Ultra Chainring Swap?

    Question: I've got the same bike you do, and bought a Wolf Tooth 52T 130 BCD. Didn't install it yet. Before I try to take my bike apart to do this, would I need the bolts Wolf Tooth sells to fit this on my Rize RX, if I don't want to move the chainring guard to the inside like you did? I...
  7. M

    2021 Rize Models - Shipping Thread

    Thank you! If I want it to be bouncier (I guess I'm light?) do I turn it negative (counterclockwise) or positive (clockwise)? The instructions used the term "preload", but I wasn't sure what more or less preload actually does.
  8. M

    2021 Rize Models - Shipping Thread

    A few more small-ish critiques from my experience yesterday: The bike seat was very "meh", not as soft and comfortable as I was hoping. Not terrible or hard, but pretty generic. It would be fine to use, but I have a spare Cloud 9 seat I'm going to try to install today. The suspension...
  9. M

    2021 Rize Models - Shipping Thread

    Yeah, it came with five levels, but the switch between "Speed and Eco" (which supposedly was just really the same 9 levels, but spaced out between the two modes) didn't work. I couldn't figure out how to get it to work, either by following the instructions (holding the button down) or changing...
  10. M

    2021 Rize Models - Shipping Thread

    I received my Rise RX today, and I built it. I'm going to write a longer review later, but some initial thoughts, issues, and impressions: The overall quality of the bike and its construction seemed great, just very solid and well-put-together. It also looked incredible. The instructions...
  11. M

    2021 Rize Models - Shipping Thread

    Excited that I ordered my Rize RX today, and it shipped! Should get it Friday. I think I'm going to build it myself- never did that before. But I was thinking of maybe getting Velofix to do it, so that they could tune it and make sure it's running perfectly. Would cost another $265. Does...
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