Search found 55 matches

by kevinscargobike
Aug 19 2019 3:30pm
Forum: E-Bike Technical
Topic: GMAC vs MAC and Infineon vs Phaserunner
Replies: 17
Views: 1413

Re: GMAC vs MAC and Infineon vs Phaserunner

I just passed 3000 miles in a little less than a year with my MAC + Phaserunner combo, including occasionally feeding a full 40A at 52v on my short hill climb home, and it's still working great. This weekend I opened the motor up to add some more grease, since I was noticing that it was getting a li...
by kevinscargobike
May 25 2019 2:04am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Cycle Analyst V3 preview and first beta release

So you say it's a hardware issue? My memory of it the first time was that they had me double check that the dot was in the right place relative to the crank arm, and then just mailed a new one to me - which I guess must mean they thought it was a hardware problem? The second one was more strange, i...
by kevinscargobike
May 24 2019 5:04pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Sempu goes crazy

Sometimes it shows 0Nm if no pedal pressure is present, which is fine. Then you put your foot on the pedal and it shows a WAY too high amount of torque (leading to way too much throttle). But worst of all the torque value sometimes doesn't go down to zero after you release pedal pressure. Or it sho...
by kevinscargobike
Apr 26 2019 11:32pm
Forum: E-Bike Technical
Topic: 12T MAC motor and high current
Replies: 28
Views: 4568

Re: 12T MAC motor and high current

I live on a 180 ft hill that averages 9% but has one 15%+ section at the end. I have a Mac 8t in a 20” wheel on a 100lb cargo bike, the only time I haven’t made it up the hill was with an adult passenger, making for about a 450lb total weight, and a battery that was only 50% charged. I think I was r...
by kevinscargobike
Apr 12 2019 12:35pm
Forum: E-Bike Technical
Topic: 2WD vs high power mid drive kit ?
Replies: 12
Views: 741

Re: 2WD vs high power mid drive kit ?

I've been back and forth on this too. I bought a used Cetma cargo bike because I was confident that the steel frame would flex enough to fit a 138mm MAC 10t in the back, to use along with a MAC 8t on the front - but since LR is local to me, I've also thought about one day getting a Rohloff hooked up...
by kevinscargobike
Jan 25 2019 5:47pm
Forum: E-Bike Technical
Topic: automatic assist level based on slope. Anyone do this?
Replies: 8
Views: 519

Re: automatic assist level based on slope. Anyone do this?

I was curious about doing something like this, at least from the hill point of view, and I think it turned out to not quite be possible with the Cycle Analyst - I think I wanted to tie the proportional assist from the Sempu Torque Sensor up with the speed mode for the throttle (the one where positio...
by kevinscargobike
Jan 19 2019 11:16pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1218
Views: 212165

Re: Compact Field Oriented Controller, ASI + Grin, limited run

Could it just be the reverse checkbox? (I didn’t double check, but I think I recall that being a thing)
by kevinscargobike
Jan 12 2019 5:33pm
Forum: E-Bike Technical
Topic: Motor commutation chatter with EZEE and Phaserunner?
Replies: 6
Views: 607

Re: Motor commutation chatter with EZEE and Phaserunner?

I just ran across this, have you upgraded to a torque sensing BB yet? We have a Bosch CX box bike and a Mac + Phaserunner + CA3 + Sempu box bike, and I feel like I did eventually make something that is nicer than the Bosch, but it took a fair bit of tweaking. It might also just be that I like that i...
by kevinscargobike
Dec 13 2018 4:00pm
Forum: E-Bike General Discussion
Topic: Lightest motor for hill climbing and 135mm dropout with disk brake?
Replies: 19
Views: 1436

Re: Lightest motor for hill climbing and 135mm dropout with disk brake?

I've been using a Mac 8t in a 20" wheel on a front loading cargo bike for about 4 months, and I live on a hill that's 150 ft climb that averages 9% but peaks somewhere around 15%. In the peak of summer, once or twice I saw the motor reach 90C after I'd reached the top of the hill and stopped at the ...
by kevinscargobike
Sep 19 2018 11:52am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Cycle Analyst V3 preview and first beta release

Yep - that's not an uncommon situation. It's been mentioned before that an outline of some common configurations or Use Cases might be useful so that settings could be seen in play to address typical applications. But, a work in progress.... :D I wonder if you could decentralize that work a bit wit...
by kevinscargobike
Sep 13 2018 12:05am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Cycle Analyst V3 preview and first beta release

I just thought I’d update on my surgy Sempu behavior. I’d solved it well enough, but since I’d changed lots of settings, I didn’t really know what had really fixed it. While riding around a lot with passengers in the front of my bike (toddler, adult, adult+toddler), I decided that I’d really like a ...
by kevinscargobike
Aug 21 2018 9:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: CETMA Largo Cargo Bike
Replies: 6
Views: 1239

Re: CETMA Largo Cargo Bike

IMG_0953.jpg The bike finally leaves the basement. I wanted to get the entire install to be independent of whatever is mounted on the fame, but putting the battery on top of the platform really felt like the only sensible place. Because of the angled support struts in the cargo area, there's plenty...
by kevinscargobike
Aug 21 2018 4:29pm
Forum: E-Bike Build Threads / Photos & Video
Topic: CETMA Largo Cargo Bike
Replies: 6
Views: 1239

Re: CETMA Largo Cargo Bike

IMG_0650.jpg I marked up this picture to ask Grin whether the Sempu needs to be oriented so that the wire goes straight down, or if I can come down at an angle, since the eccentric bottom bracket adds an extra complication. Angle is ok! IMG_0710.jpg Purple cranks! IMG_0665.jpg Battery fits upside d...
by kevinscargobike
Aug 21 2018 3:59pm
Forum: E-Bike Build Threads / Photos & Video
Topic: First ride on my 20"/26" Cyclefab eCycleTruck
Replies: 1
Views: 490

Re: First ride on my 20"/26" Cyclefab eCycleTruck

Great bike! I have almost the same setup, x2, just with Mac motors - I started out by trying it on my wife's old Boda Boda, and loved it so much that when I bought my Cetma, rather than move the parts over from that bike we decided to keep that bike as is and I bought all new stuff for my new bike. ...
by kevinscargobike
Aug 13 2018 5:41pm
Forum: E-Bike General Discussion
Topic: A new fast and stealth cargo ebike
Replies: 17
Views: 2223

Re: A new fast and stealth cargo ebike

Are you saying that the BBSHD chain ring would hit that driver side chain stay? Maybe? I brought a Tsdz2 to a shop to see how it would fit, and it was the gearing to the inside of the chainring that made it fail. I think Yuba themselves told me that the Bafang drives don't fit. Or maybe it was an a...
by kevinscargobike
Aug 13 2018 4:25pm
Forum: E-Bike General Discussion
Topic: A new fast and stealth cargo ebike
Replies: 17
Views: 2223

Re: A new fast and stealth cargo ebike

I made a thread, but I haven't updated for a while, so it leaves off before the phaserunner and motor showed up:

viewtopic.php?f=6&t=94601&p=1393896#p1393896
by kevinscargobike
Aug 12 2018 1:08am
Forum: E-Bike General Discussion
Topic: A new fast and stealth cargo ebike
Replies: 17
Views: 2223

Re: A new fast and stealth cargo ebike

The problem with the Supermarche is the angle of the chain stays, the way the drive side one comes down keeps you from sliding on an aftermarket mid drive. I dunno about the original poster, but I ended up finding a good deal on a used Cetma and just this week got a Mac 8t / Phaserunner setup going ...
by kevinscargobike
Aug 08 2018 11:52am
Forum: E-Bike Technical
Topic: Sempu BB + cycle analyst assist not working well
Replies: 21
Views: 2116

Re: Sempu BB + cycle analyst assist not working well

I had a funny observation. Building up my Cetma cargo bike with a belt drive, I followed the gates tensioning guidelines. Once I finally hooked everything up I found that the torque sensor would have been zeroed out at 2.5v ! A mechanic had already mentioned to me that the Gates app suggests making ...
by kevinscargobike
Jul 31 2018 4:30pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Cycle Analyst V3 preview and first beta release

For what it worth, that sounds exactly like the surging that I've been having - other than that I don't see Hwt go up. Along with Teklektik's suggested mitigation, I also went to 3 presets, so that most of the time when I'm not climbing a hill I have a lower wattage maximum and no assist under 2mph,...
by kevinscargobike
Jul 10 2018 5:44pm
Forum: E-Bike Build Threads / Photos & Video
Topic: CETMA Largo Cargo Bike
Replies: 6
Views: 1239

Re: CETMA Largo Cargo Bike

I had fun last night seeing how cable wrap that sort of matches the paint would work out. IMG_0599.jpg I think it kind of looks futuristic, but a little clunky. Our Packster uses black spiral cable wrap, and I think it's really effective for reducing the cable-clutter feel. The wrap I have isn't spi...
by kevinscargobike
Jul 08 2018 11:46pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Cycle Analyst V3 preview and first beta release

My settings are: PAS Poles: 24 Pulses/Rev Pas Signal Type: 2-Wire PAS Direction Polarity: 5V = Reverse Device Sensor Type: Custom TRQ Torque Scale: 20.0 Nm/V Zero Torque Offset: 1.49 My torque scale was set by feel, but got a bit more generous when I set my "Assist Start Level" to 0 HW. I'm not sure...
by kevinscargobike
Jul 06 2018 4:09pm
Forum: E-Bike Build Threads / Photos & Video
Topic: CETMA Largo Cargo Bike
Replies: 6
Views: 1239

Re: CETMA Largo Cargo Bike

My short update is that when I got back from vacation, I got the rebuilt Nuvinci wheel back, and put the Stokemonkey on. The Stokemonkey is weird. It's like you're on a tandem with a robot, and you have a lever that lets you ask the robot to pedal faster or slower, and then you have to match however...
by kevinscargobike
Jul 04 2018 1:51pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Cycle Analyst V3 preview and first beta release

Yep those were the 'ish' numbers I saw but now knowing the Start Assist for sure: we expect to see a motor power of motorPower = (100HW-65HW) * 10W/HW = 350W You are getting more than that - over 500W -- not 50% of expected. Well, half of what *I* expected :D (it might be helpful to update the Assi...
by kevinscargobike
Jul 04 2018 12:29pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 700620

Re: Cycle Analyst V3 preview and first beta release

Yeah, sorry, the video isn’t a great way to see. The multiplier was at 10x (I waggled the knob a bit to show the value), my Hwt was 100ish and the motor wattage was 5-600ish. My start is at 65w now. I’ll try to send a PM with all the info later today to work on the surginess, if I can sneak away fro...