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    Bafang Ultra 1000 needs work

    Yes the center gear group DOES have a one way bearing and it sounds like this could be your issue. I would change all three.....
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    My Bafang Ultra Mountain Bike! Frey AM1000

    I also use the adjustable Velcro straps, one per battery in the top half of the battery. Never had a problem on 4 different Frey bikes and one FLX.
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    My Bafang Ultra Mountain Bike! Frey AM1000

    I bought just a frame (HT100) from Frey late in 2018. I then purchased everything else from other sources. Oh yeah, I also bought the complete G510 drive package also from Frey. It was all good. Unfortunately they quit selling just frames because a lot of people complained about this bit or that...
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    USA Stock of BMS's?

    I actually have gotten both of the BMSs you listed from Daly in China. Cost was about $25 each and I received them in two weeks. Just go to their website and start and inquiry.
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    paralleling 2 48 volt ebike batteries

    I want to parallel two 48 volt 17AH batteries with 30 amp BMS in each. These are same cells same size. The goal is to power a 2300 watt Bafang Ultra that will draw 45-50 amps at full throttle. A couple of questions: 1) How do I charge them? Since the outputs will be in parallel, IF I charge one...
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    need to perform surgery on 72 volt triangle battery

    Well, I performed the surgery, reduced this 72 volt to a "70 volt" 24.5 AH battery. (lots of free-time with lockdown in effect) With the BMS re-wired 1-19 and # 20 not connected, the BMS worked. I have put about 50 miles on this new battery. 3900 watts. It goes about 10% faster in every gear...
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    Re: My Bafang Ultra Mountain Bike! Frey AM1000

    Does anyone know if the EX Pro with two batteries can deliver 2 x 30 AMPS to the ultra? I think it can with the "combiner" device. If it can do so, then this Frey EX dual batt model would be a GREAT Candidate to upgrade the controller thru Watt Wagons or Exess since the power system is already...
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    need to perform surgery on 72 volt triangle battery

    This battery was well constructed. So I decided to go ahead with my plan. I already did the removal of one parallel group. I turned it into a 19S from a 20S. Still 7P - 24.5 AH. As for the BMS, since I know so little; I ordered a 19S 60amp with Bluetooth and phone app for battery status $47...…...
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    Re: My Bafang Ultra Mountain Bike! Frey AM1000

    Never too late: https://dalyelec.en.alibaba.com/?spm=a2756.trade-order-list.0.0.3caf76e9XMibFs&tracelog=from_orderlist_company cut and paste into your browser
  10. G

    BMS compatability

    Can I run a 20S BMS on a 19S battery?
  11. G

    need to perform surgery on 72 volt triangle battery

    No Name BMS 20S 60 Amp
  12. G

    need to perform surgery on 72 volt triangle battery

    OK...thanks for that advice, that is what I am looking for. I can do that.. I can then leave the wire number 20 disconnected??? As for shape and size. Yes, cutting off that bit makes it fit. I proved this with a cardboard cutout in the "new shape"
  13. G

    Bafang ultra upgrade to 2500watt

    Hey JFK, Very interested in the Bafang controller mod. Can you supply details? maybe a photo?
  14. G

    need to perform surgery on 72 volt triangle battery

    I have a never used 72 volts 24.5AH triangle battery. I purchased it new from China about 8 months ago it is 20S7P and it is 1/2 inch too tall to fit into my Frey HT 100 frame. Currently a 16S8P is installed using a PR. This is totally my fault! Anyway, I need to preform some surgery and make...
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    Re: My Bafang Ultra Mountain Bike! Frey AM1000

    One correction I need to make to my above post: The BMS(s) in the Frey batteries are NOT 40 amps. They are 30 amps. The FUSE has been upgraded to 40 amps. they did this because at full throttle the bikes pull a full 30 amps and some of the fuses would fail over time. (ask me how I know this...
  16. G

    Re: My Bafang Ultra Mountain Bike! Frey AM1000

    Here is the battery information from Ivy at Frey: IVY wrote: EX Max battery 48V14Ah inner+48V14Ah outer. CC Max battery 48V17.5Ah. both do not apply for 52V. Here is how the EX handles two batteries with auto-sensing of voltage: IVY wrote: About EX battery how they work I answer you below...
  17. G

    FLX BLADE

    Apples and Oranges when comparing hub drives to mid drives.... For the Blade, yes, 34 MPH is about tops with fresh 48 volt battery and some pedaling. However, go try and climb a long steep hill with a hub drive. A $4,000 + price point, including top components such as Spank wheels, SRAM X1...
  18. G

    FLX BLADE

    That may be true about the lower priced Ebikes currently on the Market. However, this FLX Blade model with options was $4,300 plus Calif Sales Tax. Not a budget priced machine. It is a great bike with top end components and they sent me a replacement motor for the Bafang Ultra when it had a...
  19. G

    My Bafang Ultra Mountain Bike! Frey AM1000

    true, But the same company sells one that is for trailers. Look on their website....
  20. G

    Frey FAT 1000 2.0 first impressions

    No smart BMS is available yet. Hopefully this will be available soon. At least with a 40 amp BMS, we will not be pushing the BMS to the limit and it will improve performance of the battery with a 30 amp draw on the battery.
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    Frey FAT 1000 2.0 first impressions

    Actually, I have had good results with other batteries from Frey. This one remained problematic and Frey agreed to send a replacement and stated they have upgraded to 40 amp BMS for all future 21AH 48Volt and 17.5AH 52 volt. Korean 35E cells...
  22. G

    My Bafang Ultra Mountain Bike! Frey AM1000

    Sure, Front brake on left and rear brake on right. No foot brake.... :-)
  23. G

    My Bafang Ultra Mountain Bike! Frey AM1000

    I use right hand half twist throttles on all my eBikes. This is because of my motorcycles. Keeps the muscle memory intact.....Most recently, I specify this when ordering a Frey Bike....
  24. G

    My Bafang Ultra Mountain Bike! Frey AM1000

    I just cut mine off the "smoking charger" and used it as an extension for the Grin with the other end being an XLR. :bigthumb:
  25. G

    Frey FAT 1000 2.0 first impressions

    Thunder camel: Yes this Frey FAT 1000 2.0 is the bike with which I found reduced power for 2nd half of 21AH battery. It showed 0.5 volts low on it's display and only 97% charge on it's display. Before reading your post, Frey was leaning towards the Bafang unit and had submitted problem to...
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