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  1. E

    anyone remove an axle from a rear hub motor?

    need to replace mine on a QS205. The stator is fine but the axle threads are destroyed. I removed both bearings as well and will buy new ones. I also removed a clip ring that was on the axle shaft as well Is this possible to remove with basic tools? I have no access to a press. Thanks
  2. E

    Fardriver watercooled heatsink new

    This will fit the 84 and 96v versions. I dont need it because Im using the finned heatsink There is also hardware included 50 shipped
  3. E

    BMS discharging/balancing issue

    Hi all! I have a question regarding my ant bms. Im trying to slowly let the bms discharge/balance them to the same level as the lowest cell. You can see one of my cells is quite low When the low cell reaches the cutoff voltage limit thats programmed in the app, the balancing stops totally and...
  4. E

    Dnm shock repairable?

    Hi guys This shock doesnt have much mileage on my ebike but it started leaking oil at the top from the blue knob. Just curious if these are easy to repair or not worth the time to fix? How hard would it be for a first timer to repair if I went that route? Thanks!!
  5. E

    Cycle Analyst abnormal readings

    Moderator edit: This post and it's siblings were moved to the new thread ebike11 started about this problem, to give context and already existing info and troubleshooting steps to readers of the new thread. Hi Is anyone using a fardriver with external shunt and cycle analyst? My power readings...
  6. E

    Is this normal?

    Regarding built in precharge circuits on this QS10. Shouldnt the negative prong on the connector be sticking out farther so that the first contact point is the negative side? The QS10 connector has the positive prong sticking out farther. Im sure its normal but why is it like that? Thanks
  7. E

    Precharge resistors

    Hi all I have a question about precharge resistors. I am using a large 96V fardriver controller. I purchased a 20W 2k ohm resistor and wired it up. I plugged it in before the main battery to controller connectors. However Im still getting sparks on my Anderson connectors. I even waited a minute...
  8. E

    Please recommend proper grease for this

    Hi guys I just got my Anderson connectos and housings ready but didnt put any lubrication on the actual metal terminals They spark every time i connect to my controller causing pitting and damage to them. Now they are almost impossible to connect together. These are SB50A. Should i be putting...
  9. E

    Parallel wiring..perhaps a unique scenario?

    Hi guys At the moment my pack is 28s lipo 20Ah pack. Its connected to a 300A ANT BMS. I can monitor each cell because the BMS can handle 32s Id like to keep the same voltage but wire another separate 28s pack in parallel to have 40Ah. Its easier for me to mount to separate packs in parallel...
  10. E

    Can anyone give advice on this ??

    Hi everyone! Im currently trying to stuff thicker phase wires into the axle of a qs205. I plan to remove the stock wires shown and insert slightly larger gauge after removing the thick silicon jacket and heat shrinking it with PTFE high temp silicon heat tubing. I have 2 questions. 1...
  11. E

    Step down transformer/converter

    Hi guys I have a 220V charger that was sent to me by mistake from aliexpress. They sent the wrong voltage even after telling them to send 110v. Anyway since we use 110V in north america, and since my charger is 20s (84v) 9A output...would I just need a 220v down to 110v and around 1000W...
  12. E

    Phases...a quick question

    Hi guys I read a build thread where the person replaced the stock oem phases from inside the motor with larger 6awg but removed the silicon coating and shrink wraped it to make it slimmer on all 3 phases to get them through the axle. The shrink tubing I have is rated 125 degrees celcius...
  13. E

    DNM usd 8 fork brake adapters x 2

    Hi Need a couple of these. Let me know if you have any..thanks!!
  14. E

    I think I made a mistake up a hill

    Too much heat going up a hill. :( :( :( :( Its one of my other motors, small 350w First time it has happened...it also snells terrible. Like some type of chemical
  15. E

    Which would you use?

    Hi Which connector would you prefer to use if you are going to be pushing over 100A ? 8awg is being used also. 1. 8awg soldered to XT90 2. Anderson 50A but crimped. Andersons are rated lower but the connector itself seems stronger than the connector in an xt90 At the moment the choice is only...
  16. E

    Are these capable of 40A charging rate??

    https://hobbyking.com/en_us/turnigy-high-capacity-battery-20000mah-6s-12c-drone-lipo-pack-xt90.html?queryID=82e067fdf0390db0dbdf000d8d28360b&objectID=78412&indexName=hbk_live_products_analytics&___store=en_us These cells are rated 2C in the specs, so Im assuming 40A max. charging rate? :shock...
  17. E

    Puffy lipos

    Hi all In your opinion is it worth strapping or using heavy duty zipties (which would be a slimmer/space saving preference) to keep lipo packs tight to avoid puffing? The packs are new, purchased early and late last year. They are freely mounted in a rack bag and frame I am using the larger...
  18. E

    21 inch down to 18 inch, good idea??

    Hi everyone! Had a question about motor/wheel performance. I have a high Kv (3T) qs205 motor in a 21inch wheel but with the tire mounted it is the same height as a 26in bicycle wheel/tire. Its a little bit too high. I originally read that the bigger the wheel size the more top speed. Top speed...
  19. E

    Will the motor act abnormal/sputter??

    Hi again guys I wanna test the temperatures between the original phase wire and then another original phase wire that has 4awg cable crimped onto the wire around 15cm outside of the motor. Im just curious to see the temperature difference. I will use 2 separate temperature probes that are...
  20. E

    Can anyone read Chinese?

    Got this metal spec tag that was on one of the APT controllers. Im assuming its 350A continuous 650A max current 900A phase current I tried google translate but I thought someone could translate it better. Thanks in advance!
  21. E

    Steel seatpost racks

    Is there such a thing? One that doesnt mount to the rear hub nuts. They dont seem easy to find for obviously reasons because aluminum is lighter etc. Still wanna consider a steel one if possible, thx
  22. E

    Qs273 heat tolerances

    Hi huys I remember seeing some numbers related to the qs205 but wondering if there are any spec sheets for the heat tolerances of the motor/phase wires etc at different voltages..?? The qs273 is quite a bit bigger than the qs205 so I cant really go by the 205 numbers. Thanks!
  23. E

    Best easy to use onscreen speed/power overlays?

    Hi guys I see a lot of videos on youtube using tachometer overlays on their videos showing the speed, distance but amps, watts etc. as well I think it would be interesting to use the program. Do you need a specific camera and what are a few of the programs you would recommend? Curious as well...
  24. E

    QS273 vs 4AWG pics

    Hi guys Decided to get some 4awg for basically a heatsink on each phase. Will crimp to original qs273 phases wires roughly 15cm from outside the motor. Here are some pics...one thing i noticed is that the 4awg wire strands are very fine but the qs273 wire strands are thicker and stiffer. Not...
  25. E

    Cutting phase wires?

    Hi all! Is it worth/beneficial to, for example, cut the phase wires on a qs273 motor, leaving about 15cm sticking out of the motor then replacing the rest of the long phase wires that were cut with 6awg wire on each phase and crimping everything tight?? Its almost impossible to fit thicker wire...
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