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  1. JRA

    Tour de France 2024

    A bit disappointed that NBC isn't doing the World Feed that is sans commercials this year.....It seems like coverage access for cycling in general since GCN+ went away has not done the Tifosi any favors and not just for road biking but MTB and CX as well. One thing I do to supplement my...
  2. JRA

    UL-2271 certification for Zen 52V, 20Ah batteries

    Several years ago when I looked into battery certification I was amazed at the cost potential, per battery spec. I'm glad that Zen is in a position to absorb the costs and hope they get a substantial return on their investment! On another subject I just watched a Grin video of Justin...
  3. JRA

    Hub- vs. mid-drive for e-gravel/road bikes

    I gifted my son two ebikes over the last few years. One is a hardtail mid drive with a TSDZ2 motor and the other is what is called a gravel bike these days I suppose with a dd front hub motor. He has come to the same conclusion that I did over the years that a hub motor bike is better for road...
  4. JRA

    Bafang BBS-02/HD vs M600 vs M620 (Ultra)

    I only put in a heaping tbsp of Cornhead in mine and the others I have done that replaced about a half a tsp. Those that fill the area with grease are in for problems I feel as there is no real gasket between the gearbox and the controller?
  5. JRA

    Bafang BBS-02/HD vs M600 vs M620 (Ultra)

    The torque assist on an M620 running the UART takes a bit of tuning from stock via a Windows computer and an accessory cable with the correct software. Along with a fair amount of hunt and pecking. Once achieved I find it to be on par with any pedal assist system I have experienced. Doesn't...
  6. JRA

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

    I didn't see the 52v UART version listed on CA. eBike and that was why I suggested GreenBikit which does? If you worked out that is what you needed with CA then that is probably the hold up as they have to special order it from Bafang in China. Hopefully you will receive it soon!
  7. JRA

    help me find the right hub motor

    Assuming that tire fits on a 10" rim there are any number of hub motor/wheel options available online with a google search?
  8. JRA

    Charging Ebikes on EV Charging stations

    If you read this sites info you will see that isn't going to happen anytime soon, or at least until there is standardization in the eBike charger world: https://fit-ebike.com/en-en/about-us/blog/e-bike-chargers/ However it is possible to find conventional outlets or have them in designated...
  9. JRA

    UK to get ghostbuster ebike killer backpacks

    Who you gonna call?
  10. JRA

    New Chinese Battery Standard

    No real word in that article it the new standard achieves the UL one that is being required in some states here? If not then another hoop to jump through for the suppliers. I happen to know that getting a battery certified is no cheap endeavour.
  11. JRA

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

    I was led to believe that when you swap out controllers you need to "clock" the new one to the motor. Maybe not the right term but it does involve a specialized electronic device that I figured in the end I would have no idea of how to use and I am not shy about mechanics. If you could find...
  12. JRA

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

    https://www.greenbikekit.com/g51-m620-ultra-barebone-motor.html This is what I used when I drowned my original motor. The UART version is preferable because it can be tuned easily via the available programming. IIRC CA eabike only offers the CanBus version. Also you will want the 52v as well...
  13. JRA

    Can't find Battery

    The Chinese New Year started today so that will put communication with Herbert at a standstill for a few week. DT is a large supplier of good standing that still will sell an individual battery to anyone.
  14. JRA

    Tongsheng slipping

    Could be the sprag clutch? My suggestion would be to just get another motor, which if you are in Asia,should be as cheap as it gets. Install that and continue on and use you tube to help tear down your current motor which should end you up with a spare. 5000k @ 10wh\mile denotes very careful use.
  15. JRA

    New 7 speed Middrive motor! Is this the future?

    That Ultima bike looks very sensible and would make a fine bike for alot of urban and commuter types as well as cargo bikes due to the powerful motor. Does lack a way to insert a belt but that could be modified fairly easily via a coupler in the seat/chain stay or going to an elevated stay? Not...
  16. JRA

    No charger, no GO? 😥 🚴

    Those bikes are around 10yrs old. Kalkhoff had a presence here in the U.S. in the earlier days of eBikes and had a distributor based in Portland, OR but the brand stopped distribution here years ago. They do still exist in the EU as Derby is still in business and has other brands they sell also...
  17. JRA

    Can't find Battery

    Send voltage required plus those dimensions and pix of all sides of your battery to [email protected]. He should be able to help you out.
  18. JRA

    Sondors financial troubles

    I was skeptical of Sondors first offering via CSF and somehow he pulled it off. With the beating the bike industry as a whole is experiencing currently the wheat will be separated from the chaff until the next boom arises. Caveat Emptor.
  19. JRA

    2024 - Our Rides in Words, Photos, Maps and Videos

    Beautiful weather here on the north coast of OR on 1/1. Thanks El Niño!
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