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  1. M

    Oil cooling a motor with transformer oil/dielectric fluid - the next frontier?

    I was going to give this a try, but i was only able to find some old polychlorinated biphenyl based transformer oil that was hidden in the back of a seacan. The newer stuff we use in our 69kv-12kv transformers was sealed away in unopened containers :/ They last changed the oil when i was on...
  2. M

    Bafang M620/G510 (and all other Bafang motors) now on CAN-BUS (2021+) rather than UART (2018-2020)?

    The title is a bit misleading as its still fairly easy to get m620 UART kits from GBK (and likely other sources). I was hoping for a m620 UART firmware that doesn't have as aggressive of a power save mode than the current stock one has. At the moment, once you drop below 47V (with 52V...
  3. M

    Bafang G510/M620 (Bafang Ultra) thread

    Not sure about any UART full bikes, but i was able to get a current m620 UART motor kit from greenbikekit's website. Included the new rotor design, 1000W, and i was able to use one of my already owned eggriders with it to program most settings. Only issue i've been having is a power save mode...
  4. M

    Cyc x1 pro and stealth gen 3 announced

    I only started bike riding because my bus times shifted and no longer was able to make it to work on time. I started with a hub motor, but they wouldn't work with where I live in Canada due to the Hilly terrain and wanting to stay street legal. Also the wheel weight plus being on the heavy...
  5. M

    Cyc x1 pro and stealth gen 3 announced

    I forgot to add: torque sensor no longer functioned correctly, would randomly function normally then suddenly activate full on for any rotation at all on the cranks. Would also cause the bike to jump forward for a moment when braking to a stop and letting off the brakes. I replaced those...
  6. M

    Cyc x1 pro and stealth gen 3 announced

    I ended up retiring my stealth kit because it is unable to keep up with the wear and tear of a daily commuter even with running at reduced power. Heres how's my commute been in 2023 on the CYC stealth... 1200km - Sprag slipping, motor power not engaging drive chain. (2 months out of commision)...
  7. M

    BBSHD slightly too wide for 68 mm bottom bracket

    When i had my BBSHD on an aluminum frame, it did loosen off from time to time, and i needed to keep tightening it with my very accurate beater screw driver and hammer :P This may be due to cold flow from aluminum (not sure if it affects 6061 alloy tbh). However on a steel frame it doesn't...
  8. M

    Cyc x1 pro and stealth gen 3 announced

    They really don't have much choice on the clutch rating being less than the advertised rating. Even the best sourced clutch for those dimensions is well under 150 nm
  9. M

    Dumb question: why are there e-power cutoff brakes at all?

    I hated running without brake sensors. With torque sensing, it's easy to put too much pressure on your pedals at a light, you end up causing the bike to try to take off. Sure hydraulic brakes can hold it, but it's unnecessary strain on parts. With Regen braking, you save a ton on pad wear...
  10. M

    Oil cooling your hub- NOT snake oil!

    I've been contemplating using Dexron III in my CYC x1 Stealth gen 3 mid drive to help deal with some thermal throttling i encounter in long climbs (85C peak). The heat drops really quick once the load lessens, so i suspect it is the ~1-2mm air gap between the outer casing and the motor casing...
  11. M

    Cyc x1 pro and stealth gen 3 announced

    the part that wore out is not rated for 150Nm, if you look up the specs of the FE433Z2 Freewheel Clutch Insert Element, it is rated for a nominal torque of 56nm from most Chinese manufacturers, or 78 nm from GMN. Likely this is the intended point of failure. Dimensions of the clutch are...
  12. M

    Cyc x1 pro and stealth gen 3 announced

    After 1100 km (1 month of use) it looks like the sprag clutch wore out on my stealth gen 3 motor. Had to put my BBSHD kit back on the bike because it was slipping so much i had to walk up steep inclines. This is with running 800watts and keeping the bike in the lowest gears on hills, so its a...
  13. M

    Cyc x1 pro and stealth gen 3 announced

    I got my stealth gen 3 a few days ago. Retired my BBSHD that is approaching 45000 km on it. I'm not noticing the noise too bad, when running on street mode with pedal assist. I still have a studded front tire on, so that is louder than the motor. Compared to a BBSHD though, it's louder on...
  14. M

    Bafang BBSxx - fault finding and fixes

    Just remember that not all vendors who supply the parts will set it up for being backwards compatible. Im still waiting to hear back if the bearing is a 606 as they said or a 609, as the dimensions they gave are for a 609. Oh and that is me who asked on FB lol
  15. M

    Bafang BBSxx - fault finding and fixes

    It should be noted that in april 2019, Bafang changed their rotor design on the BBSHD and use a larger bearing on the motor stator lamination side. Because of this, if you break your rotor from one manufactured before this date, you will need to order a complete stator+rotor setup. Here is a...
  16. M

    Mcfizzlestag's GT Avalanche Elite BBSHD Build

    I have called it quits on the 14s3p GA cell Luna Battery. Here is my experience with my soft pack luna battery. Tried Running at 25A that luna advertises being rated continious, can't touch the battery for more than a quick tap when done commute. Had to dial back amps to 20A, which still gets...
  17. M

    Greatest boxers of all time ?

    I prefer the saxx brand, I used to be fruit of the loom but they changed them a long while back and never was the same
  18. M

    I broke a bolt in my hub motor. How do I get it out?

    My rack snapped off its screw mount the other day, what worked for me was using a spring loaded center punch, drilling a hole and using a bolt extractor. Thankfully i was lucky enough to harass the millwrights at work to lend me the extractors :D
  19. M

    Dr. Greger explains the cause of insulin resistance, p 17 and explains how to reverse heart failure pg 17

    Neptronix, are you on a ketogenic diet? My wife is very high risk for type 1, due to family history and with both of us being overweight, she made the lifestyle change. In 6 months and with the holidays being off the diet, we are still down a good 65 lbs combined and have plenty of energy...
  20. M

    BBSHD Motor shuts off while riding

    How many AH is your battery? I use a 14s3p (10.5AH) battery from luna, i hit LVC early at around 46-47V after running 20-22A for an extended period, voltage sag isn't that horrible, but its enough to kick out the controller early.
  21. M

    Eggrider V2 Display

    Who here has an Eggrider v2 and what are your thoughts on it? I have been using mine for a week now and already loving it much more than my old ebikes display (BAC-601) which i ended up removing completely. It is by far the most minimalist display i've found to work with the BBSxx motors, so i...
  22. M

    Mcfizzlestag's GT Avalanche Elite BBSHD Build

    The build was indeed fairly easy, just a bit of frustration redoing the brakes. I had a good solid week of commuting (i work 6 on/3 off), with detours to see what the motor can push at 20 amps. I did give a try upping the amps for the off road profile to 25, but i was not comfortable with how...
  23. M

    Mcfizzlestag's GT Avalanche Elite BBSHD Build

    The Parts are in and my wife is angry! Here's a list of what I have added to the bike over the last couple weeks... Topeak super tourist uni dx pannier rack (chainreaction) Cane Creek Thudbuster Quadra LT Seatpost (chainreaction) Planet bike cascadia II 29er full fenders (MEC) BV Rear side...
  24. M

    Mcfizzlestag's GT Avalanche Elite BBSHD Build

    Guess im a bit lucky here where the winters are relatively mild in vancouver. The roads are generally fine, and i stick to side streets. Last year i used studded tires, but they ended up wearing through the inner lining of the tire within 3 months and popped 5 tubes in 2 weeks. My biggest...
  25. M

    Mcfizzlestag's GT Avalanche Elite BBSHD Build

    With winter approaching and my current MP edge build is dealing various component issues and wear, i have decided to scrap the build in the coming months. After a couple weeks of scouring craigslist being disappointed by shady responses or finding flagged serial numbers, i decided to take...
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