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  1. A

    New Mac Problems?

    All said and done I got the axle OLD down to 134.8 by replacing the single 4mm cassette spacer with 2x cassette spacers at a total 3.5mm, then by replacing the stock 10.5mm shoulder-nut on the cassette side with a 5.7mm thick jam nut then 1.6mm total shims (to bring the surface *just* outside of...
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    New Mac Problems?

    That sounds good. The noise is actually slightly louder when mounted because somehow it gets amplified by the swingarm. :lol: It's not actually any worse though. It's noticeable both forward and backward, but slightly more forward. At any rate, if yours is similar and you've had no problems...
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    New Mac Problems?

    So yours makes the exact same noise? How well does yours freewheel?
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    New Mac Problems?

    Back to the dropout spacing (not to ignore the other). Here goes... I got my hardware today. By replacing the 10.5mm thick shoulder-nut thing (which you can see in the video above poking out of the center of the cassette) with a regular thin nut that ended up being 5.7mm thick then adding both...
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    New Mac Problems?

    Well that wasn't as hard as expected. I've never uploaded a video from my phone before. Cool. Maybe plenty of vids coming when I get Project Loose Cannon on the road. 8) There are two irritating high-pitched noises in this video. Ignore one of them... That's my bird. :lol...
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    New Mac Problems?

    I received the motor fully assembled. The only thing that was loose was that shoulder-nut thing that I mentioned, but it has no effect on the squealing. Actually, let me try to upload a video to Youtube. A picture is worth a thousand words, a video is worth a thousand pictures, therefore a...
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    New Mac Problems?

    Thanks! The squeal isn't related to the cassette or the cassette freehub body, it does it independently from that. It squeals both with the motor mounted and without, in both directions. Same with the drag (although I'm obviously speaking of only the freewheeling direction for that one). Just...
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    New Mac Problems?

    Bueller? Bueller? Anybody? Would a mod kindly move this to E-Bike Technical?
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    New Mac Problems?

    So after much measuring, pondering, and spec'ing hardware, I ordered from McMaster all the proper dimension SS nuts, washers, and round shims that I should need to allow everything to clear while adding inside washers on both sides and keeping the dropout width to <140mm. I do know that 140mm...
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    New Mac Problems?

    Well somehow I looked at the freewheel version on the drawing and skipped over the cassette version. :roll: The freewheel version OLD is 135mm, but the cassette version is indeed 138mm. Still I feel that I need inside-the-dropout washers. The thinnest on McMaster are 2.3mm and if I used those...
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    New Mac Problems?

    I just measured the difference in axle width vs dropout width and it's an extra 3.7mm, so 134.3 + 3.7 = 138mm. I know a 3.7mm dropout spread isn't a big deal even for aluminum but it really seems like this axle should have washers between the shoulders and the dropouts, but if I used the 3mm...
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    New Mac Problems?

    I just bought from EM3ev a Mac 8T w/cassette kit laced into a 20" wheel for my folding bike. I'd send these questions to them, but it is now the E-bikers (and RC'ers) favorite long-term holiday, Chinese New Year. So... -I temporarily mounted it on the bike and plugged everything up and it all...
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    8fun motor and unknown controller worth saving? (A shittii ebike story)

    I should have included the earlier pic of the part number in case it may have helped with identification, but it wasn't on my mind since it didn't seem to match with anything else I'd seen. Well here it is anyway...
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    8fun motor and unknown controller worth saving? (A shittii ebike story)

    Thanks for the info, guys. Sounds like I was right in that it should still be perfectly usable despite the damaged axle. Yeah, it was a 26" wheel. I was thinking that it's a "350W" version because of the width. The 500W versions seem to be wider. However, I was only going from pics so I could...
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    8fun motor and unknown controller worth saving? (A shittii ebike story)

    The grease in the motor with the gears isn't black or burnt like it looks in the pic, it's solid green, not burnt at all. Just a bad pic.
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    8fun motor and unknown controller worth saving? (A shittii ebike story)

    Pics
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    8fun motor and unknown controller worth saving? (A shittii ebike story)

    Edit: pics in next post...
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    8fun motor and unknown controller worth saving? (A shittii ebike story)

    The motor and controller in question came off of a Bullshittii (Busettii) ebike that my neighbor bought new several years back (I wish he had talked to me before he did! I don't even want to mention how much he paid). I believe this motor was rated at 350W but the motor is labeled with a...
  19. A

    JP spot welder

    Okay, that's certainly better than nothing... I'll check them out. If any of them are bad then I'd prefer to replace all of them anyway (then I can find out which were bad just because I'm curious). Thanks again.
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    JP spot welder

    Thanks for the input. Any way to test them without removing them?
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    JP spot welder

    Hi ES, I hope everyone is doing well. It's been a long time but I finally just set up the new JP spot welder I bought last year (health issues always get in the way of fun), and I think I fried something. Could be a couple causes. 12V battery is an Optima Redtop, 720 CCA, 4.5 years old though...
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    24s BestechPower BMS Thread

    Thanks for the much more sensible post. I'm willing to respond to that one. :) I said 3.5V would be ideal for the specific situation that I explained above, not 3.4V. 3.45 - 3.5 is what I said that I've read can be float at almost indefinitely... I just started to explain why again, but I was...
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    24s BestechPower BMS Thread

    LOL! Did you even read my whole post?
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    24s BestechPower BMS Thread

    I just read this whole thread because these D131 BMS' are my best option in terms of function and size. However, there seems to be a lot of failures with these things. I know some failures are from user error, but it appears go beyond that... What's the deal? Are they as unreliable as they...
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    Falco e-Motors

    Pardon my still-mostly-lurker-status self for interrupting this truly epic thread, but I figured I'd jump in for a moment since I have great interest in the subject of debate. Hopefully my in-between position can add a useful point of view. (I'm far from an ignorant joe-public sheep, but I...
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