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  1. Chalo

    Mid drive chain efficiency and longevity tips

    Nah, just submerge the whole bike in hot wax. If it's such a miracle on the chain, surely it's equally marvelous for all the bike's other moving parts, and will make the thing last forever.
  2. Chalo

    HeyBike Mars error 21 on display

    Put the battery on the charger and leave it there as long as you can stand. If the BMS does any balancing, it's a very slow process that occurs only when the battery is fully charged and still on the charger. Leave the battery a couple of days on the charger and then see if it behaves better...
  3. Chalo

    Wire mismatch with new 205QS motor and my stealth fighter f-37

    If your plugs aren't compatible, you'll have to crimp new ones on or splice the old ones on your new wires. Test the motor with your prospective wire assignments before you stuff all the crimps into plug housings (or apply permanent wire splices), because the color codes may not match. Rule...
  4. Chalo

    HeyBike Mars error 21 on display

    I would very much suspect the disc brake rather than the motor. Remove the caliper and tie it out of the way, and see if the noise doesn't stop.
  5. Chalo

    HeyBike Mars error 21 on display

    I got this from googling "Heybike Mars error codes": https://heybike.zendesk.com/hc/en-us/articles/38093136987673-9-Error-Codes
  6. Chalo

    HeyBike Mars error 21 on display

    I looked at your updated top post. The brakes of your bike are unrelated to the electric components, except for switches in the levers that cut power to the motor when you apply the brakes. So a brake failure is probably a maintenance issue but not an electrical one. It makes me wonder if the...
  7. Chalo

    HeyBike Mars error 21 on display

    I keep a test rig at work that is a very cheap 18A controller with learning wires, a throttle, and a small assortment of battery and motor adapter cables for testing motors of unknown provenance. If a motor from a non-working e-bike runs fine on my test controller, then I can eliminate the...
  8. Chalo

    HeyBike Mars error 21 on display

    That's the first clue it isn't the motor. PAS is a discussion that happens between the pedal sensor and the controller. Motor isn't involved. That sounds like a display problem. If you're talking about the cartoon battery with a number of bars on it to represent capacity, those things are...
  9. Chalo

    Mid drive chain efficiency and longevity tips

    On a related note (related to 90wt oil on chains), there are a number of "wet conditions" bicycle chain lubes out there that are a sticky disgusting mess if you make the mistake of using them. Anything gooey or tacky not only makes your chain into a crap magnet, but it probably doesn't even...
  10. Chalo

    HeyBike Mars error 21 on display

    You haven't said why you think it's the motor. Other components of the system are far more likely to be the source of problems. Most likely of all it's a plug or cable. But you haven't said anything that would indicate what is going on. So maybe describe the symptoms you're getting as...
  11. Chalo

    AKM-75sx and VESC - motor poles count?

    In this situation, first I start with a rough guess at poles per revolution, like 100 for a geared hub motor. I run the thing wide open throttle and get a steady RPM number using either an optical tachometer or comparing against beats-per-minute videos on YouTube. The display (if I have one)...
  12. Chalo

    Mid drive chain efficiency and longevity tips

    Fondue was a thing in the old days. Yeah, I know.
  13. Chalo

    Mid drive chain efficiency and longevity tips

    Now that is effing gross, at least on the road. Thin wicking lube, applied to the whole chain and then wiped off the outside as much as possible, is how bike chains get oiled.
  14. Chalo

    Volonaut Airbike

    It looks like an excellent way to sift out people who deserve it.
  15. Chalo

    Mid drive chain efficiency and longevity tips

    Nothing you can feel, at all. Even no lube whatsoever won't slow you down-- but it will make noise that might annoy you, and will accelerate the wear process.
  16. Chalo

    Mid drive chain efficiency and longevity tips

    Repeated reapplication of the wax drip lube (as needed) eventually drives off the oily part without having to spend time and chemicals degreasing the chain.
  17. Chalo

    Mid drive chain efficiency and longevity tips

    Yeah, wax is so convenient that not one mechanic at any bike shop I've worked at since 1992 uses it. Waxing chains is a hobby. Every cyclist already has a hobby. Also, even the cruddiest chain's friction losses disappear in the noise of other far more significant drags on the bike, up to...
  18. Chalo

    72 Volt Electra Townie Rocketship

    That's the capacitors in the controller charging up. It sucks but it's normal. I just replaced the Anderson 45A Powerpoles on my honey's controller and one of her batteries, because she had a sudden inconsistent power failure and I discovered that the negative lead terminals were burned and...
  19. Chalo

    72 Volt Electra Townie Rocketship

    Yeah, a bunk controller can do pretty much anything wrong, because it's the brains of the operation. But in my experience it's the least likely problem component except when the problem is sudden total death of the system. Almost always it's a wire or plug, next most likely it's one of the...
  20. Chalo

    CYC X1 Pro Gen 4. Removing Hub drive from rim. Is this Quando Hub/axle combo strong enough?

    Yeah, it's most likely a 15-20 pound frame doing a 4 pound frame's job. That's the kind of thing you make when you don't understand structures or adopt best practices. See also fat tires that don't get used on snow or sand.
  21. Chalo

    72 Volt Electra Townie Rocketship

    The twitching behavior is characteristic of incorrect phase and Hall sensor wire connection, and the shutdown is characteristic of a problematic battery whose BMS is intervening.
  22. Chalo

    Wind and Solar vs Coal, Gasoline, Nuclear

    Or dumped out on the land and waterways.
  23. Chalo

    CYC X1 Pro Gen 4. Removing Hub drive from rim. Is this Quando Hub/axle combo strong enough?

    That's a normal axle size for bicycles, including tandems and cargo bikes. In addition, the axle overhangs are short. What problem do you think you would have? Just because it isn't a heavy ugly piece of junk doesn't make it weak. I'd be more concerned about the structurally crippled frame...
  24. Chalo

    A recumbent build

    That's a workable solution. However a front derailleur has the secondary effect of keeping the chain from bouncing off the ring. All my single ring bikes with rear derailleurs have front derailleurs that aren't connected to anything, which are mounted lower than normal so they straddle the...
  25. Chalo

    A recumbent build

    Sunrace M9 (RDM900) is a great choice-- cheapish, clutched, functional up to 51t sprockets, and compatible with Shimano pattern 5-6-7-8-9 speed shifters. Just because you have three rings on the front doesn't mean you have to use them all. You can lock the front derayray in just the middle...
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