Search results

Date Relevance Most replies

  1. R

    updating controller with higher amp rating

    This is what I understand, and is the reason I want to do this. Since there is very little difference between a 22A and a 25A, I probably should just get which ever is least expensive.
  2. R

    Fast wind motor

    I am happy with the G020 I have on trike No 1. It tops out around 20mph which is as fast as I go, and it climbs great. Since this is the case, I will just build another duplicate wheel for trike no 2. Going through all of these posts and the research I did only seems to validate that as the...
  3. R

    Fast wind motor

    Neptronix, thank you for your help. From your last post and playing around with the simulator tool, I have drawn a few conclusions: 1) With the same motor, performance with a fast wind/20" wheel is more or less the same as a std wind/26" wheel. The major difference (at least for me) is the...
  4. R

    updating controller with higher amp rating

    My 500w Bafang hub motor came with an 18 +/- 1A controller. I upgraded that to a 22 +/- 1A KT square wave controller. I am now looking at a KT sine wave controller rated at 24 +/- 1A. I assume this will be ok since my battery has a 30A BMS. I also have the option of sticking with a KT sine...
  5. R

    Fast wind motor

    Thanks for the responses. I did play around with the simulator before posting this. I found that differences between the std and fast wind can be significant different depending on the motor. I will go back and play with it some more. neptronix, can you explain this statement to the...
  6. R

    Fast wind motor

    It is my understanding that 26” wheels normally use a standard wind motor, but 20” wheels normally take a fast wind motor. I have a Bafang G020 geared hub motor with a standard wind that came off of a 26" wheel. I am using it on smaller 20” wheel, and it seems to work fine. With the smaller...
  7. R

    Problems using a standard wind motor with 20" wheel

    I know just enough about the winding of hub motors to be dangerous. It is my understanding that 26” wheels normally use a standard wind motor, but 20” wheels normally take a fast wind motor. The G020 motor seems to work fine with the smaller 20” wheel. With the smaller wheel, the top speed is...
  8. R

    Noisy geared hub motor

    Thanks for the comments, all very informative. Both of my controllers are square wave KT controllers. A sign wave KT controller is more difficult to find and quite a bit more expensive. Would a sign wave controller be that much quieter? Also would the square wave and sign wave controllers be...
  9. R

    Noisy geared hub motor

    I have two trikes, both with Bafang 500w geared hub motors. One has a model G060, and the other has a older CST motor that I purchased used. The 060 is very quiet, and I have no problems with it. The CST motor is noticeably louder. It makes an audible whine when running. This whine gets...
  10. R

    Best quality budget battery?

    I guess there is no such thing as a decent quality moderately priced battery. I may have to rethink even doing this project.
  11. R

    Best quality budget battery?

    I have pretty much settled on this battery from UPP's Amazon store: https://www.amazon.com/gp/product/B09MCW6WPJ/ref=ox_sc_act_title_1?smid=A1RAY93OUH65CI&th=1 A few of the reasons are: (1) It uses LG LG 21700 cells. (2) At 19.2Ah, it is slightly larger than my current 17.5Ah battery. (3)...
  12. R

    Best quality budget battery?

    I found the UPP store on both eBay and Amazon. I also found other sellers offering UPP batteries, but I'm not sure I would trust them. I'd rather go right to the source. For $305 I can get a 17.5Ah built with Samsung 3500 cells, or $369 for a 20Ah built with LG 21700 cells. Either would have...
  13. R

    Best quality budget battery?

    It does not have to be Amazon, it's just that I've had good luck with them in the past. I'm looking for a 48v battery. I did find UPP on Amazon. I was concentrating on the batteries they claimed have LG or Samsung cells. They are more expensive, but I do not want something unknown just to...
  14. R

    Best quality budget battery?

    I am adding a rear hub motor and battery to another recumbent trike. The kit I used on the first trike came with a 17.2Ah shark battery. Having learned a lot from the first build, this time I am not using a kit but building it from scratch. This trike will be used for casual rides in a hilly...
  15. R

    Hub drive from 26" wheel to 20" wheel

    With 53v in the battery, my top speed is 20.5mph. I can't go much faster than that anyway as that's almost the limit of my top gear. This is more than enough speed for me. Thanks for everyone's help.
  16. R

    Display shows battery full, but it is not

    Ah! I remember this now. This happened one time before a long time ago, and recharging the battery resolved it. Thank you amberwolf.
  17. R

    Hub drive from 26" wheel to 20" wheel

    Sorry, I never even considered doing that. When I read it, my brain filled in mid drive. Interesting thought though.
  18. R

    Display shows battery full, but it is not

    I transferred my existing Bafang/Kt rear hub drive setup from my old trike to my new one and everything was working fine. The only thing I changed was resetting the tire diameter from 26" to 20". The battery had about a 35% charge so I did a short test ride. The display showed one bar in the...
  19. R

    Hub drive from 26" wheel to 20" wheel

    I could have explained it better, but generally a wider tire provides a larger overall diameter. A typical 20"x1.0 tire has a smaller diameter than a typical 2.0" wide tire. This of course is tiny compared to the difference between a 26" and a 20" tire.
  20. R

    Hub drive from 26" wheel to 20" wheel

    Thank you for the responses, a lot of good information. A few takeaways: 1) I went from a 26x1.75" tire to a 20x2.0" tire. This means going with a slightly larger/wider (20x2.15") tire would increase my speed, but not enough to really matter. Going with a narrower tire would decrease my...
  21. R

    Hub drive from 26" wheel to 20" wheel

    So moved my 500w Bafang geared hub motor from my old 26" rear wheels trike to me new 20" rear wheeled trike. I installed everything including the KT display and controller from the old trike on the new one. I changed the speed setting from a 26" to a 20" wheel, and everything works fine. The...
  22. R

    Hub drive from 26" wheel to 20" wheel

    I have a Bafang 500w rear hub drive (620 I believe) on my 26" rear wheeled trike. I would like to reuse the hub drive on a 20" rear wheeled trike. I was told that if I do this the motor will have a lower top end speed, but more torque. Using the throttle on the 26" wheel I get a top speed of...
  23. R

    KT Square wave vs sign wave

    It sounds like "upgrading" to a sine wave controller would not be worth the cost. Especially since there would not be much if any difference, the sine-wave may not work with my motor, and the square wave one I have works very well.
  24. R

    KT Square wave vs sign wave

    Some time back I bought a 500w Bafang geared hub drive kit off Amazon. Not liking the way the controller worked, I replaced the standard Bafang controller with a KT square wave controller (48ZWSRM). It works very well, except it is a little noisier than I would like. I plan to use the same...
  25. R

    KT display battery level accuracy

    I generally charge my battery to full the night before leaving on a ride of 30 miles or so. I can typically get in around 70 miles before I get down to about 45v, so that's about two 30-35 mile rides on my 17.2Ah battery. I know you should not charge it up to full capacity as it is not healthy...
Back
Top