Search found 1997 matches

by Rassy
Jul 13 2019 4:10pm
Forum: E-Bike Non-hub Motor Drives
Topic: Mid drive using hub motor
Replies: 6
Views: 266

Re: Mid drive using hub motor

I set up a couple of tadpole trikes as mid-drives using hub motors a few years back. The first one started with a Nexus 8 transmission, which was replaced with a NuVinci auto shift. Both trikes worked great, but were heavy, and the NuVinci was quite inefficient compared to a derailleur system. I wou...
by Rassy
Jul 04 2019 4:56pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 432

Re: 1kwh pack recommendation

My older Ping battery has no specification information on it, but my newer one (over 5 years old) has a label on it that says "Lithium Battery Pack", "MODEL 20V 4400mAh Battery", and "Date of production: 201505", along with other general info. It does not say Ping or Ping Battery, etc on it. The 20V...
by Rassy
Jul 03 2019 7:44pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 432

Re: 1kwh pack recommendation

Those "Topband" cells do look interesting. So if you put 12 of them in series you would have a nominal 36V 25AH battery. In your estimate did you include shipping, a BMS, and a charger? If you do make your own battery from these cells please document the details. I could see making a 48V 10AH batter...
by Rassy
Jul 01 2019 8:00pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 432

Re: 1kwh pack recommendation

A Ping LiFeP04 48V 20AH pack is made up from 64 5AH 3V prismatic cells 4P16S format. So it's still sort of mind boggling to think about, but I've personally purchased 7 of his batteries for myself and friends and never gone inside any of them except for a couple of BMS replacements. All except 1 are...
by Rassy
Jun 30 2019 11:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: Mid drive kit on Babboe City cargo bike?
Replies: 8
Views: 443

Re: Mid drive kit on Babboe City cargo bike?

I think the bike would be a good candidate for a BBS02 or BBSHD. A BBS02 would give you plenty of assist on hills in the lower gears, or a BBSHD if you need more speed going up steep hills. I put a little bike together for my sister five years ago with a BBS02 and a Nexus 8 IGH. It's a great combina...
by Rassy
Jun 29 2019 10:44pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 432

Re: 1kwh pack recommendation

For what it's worth, I like the relative safety of the LiFeP04 as compared to some of the other battery choices. If I was faced with your decision I would probably check out a 48V 20AH (about 1000WH) from Ping. The weight would be about 20 pounds. https://www.pingbattery.com/servlet/the-2/lifepo4-li...
by Rassy
Jun 29 2019 5:43pm
Forum: Motor Technology
Topic: Bafang BBS01 Error 30 -> Controller broken?
Replies: 3
Views: 156

Re: Bafang BBS01 Error 30 -> Controller broken?

Yes, on an early BBS02 4 years ago. Did a test similar to what you did and eventually replaced the controller, which I had to purchase since it was out of warranty. That BBS02 is still in service with no further problems. Good luck with getting it fixed. If you can get them to send you a new control...
by Rassy
Jun 27 2019 12:27pm
Forum: E-Bike Technical
Topic: Issues with Bafang BBSHD + 14S9P battery pack from Em3Ev
Replies: 11
Views: 368

Re: Issues with Bafang BBSHD + 14S9P battery pack from Em3Ev

I have never had a DPC18, so probably not much help, but here is a little summary on some other display units reaction to error code 21, and of course the speed and any speed limits do not work on any units when error code 21 occurs: C961: BBS02 still runs, but is stuck in the current PAS level unti...
by Rassy
Jun 27 2019 10:34am
Forum: E-Bike Technical
Topic: Issues with Bafang BBSHD + 14S9P battery pack from Em3Ev
Replies: 11
Views: 368

Re: Issues with BBSHD + 14S9P battery pack from Em3Ev

In my experience (all with BBS02) how the error 21 (speed sensor problem) affects the system depends on the display that is installed. Some displays quit functioning, but still allow you to continue riding in whatever PAS level you were at, and also allow use of the throttle. Others shut the system ...
by Rassy
Jun 26 2019 6:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: Best BBSHD programming profile for PAS use.
Replies: 1
Views: 168

Re: Best BBSHD programming profile for PAS use.

I think the best profile is the one that suits your needs the best. Many of the canned profiles are designed for high speeds and fast acceleration. All my experience is with 48V BBS02 systems, but setting it up to your preference is the same. I also ride with PAS on multi-purpose paths most of the t...
by Rassy
Jun 22 2019 8:42pm
Forum: General Discussion
Topic: 2 stroke gas/350w front hub full Regen project
Replies: 14
Views: 480

Re: 2 stroke gas/350w front hub full Regen project

This guy just posted this month also, with much the same issue. Responses here may be useful to you:

https://www.endless-sphere.com/forums/v ... 2&t=100733
by Rassy
Jun 21 2019 2:36pm
Forum: General Discussion
Topic: HELP: Tongsheng tsdz2 - stuck halfway in bottom bracket
Replies: 3
Views: 194

Re: HELP: Tongsheng tsdz2 - stuck halfway in bottom bracket

Had a similar issue installing a BBS02 on an aluminum frame bike. There was a ridge inside the bottom bracket right in the middle. First I reamed the ridge out with a hole saw that fit within the threads of the bottom bracket and then used a round file to finish the job so that the BBS02 would slide...
by Rassy
Jun 12 2019 12:19am
Forum: E-Bike General Discussion
Topic: Cyclist spits at me and makes a buzzing noise !
Replies: 71
Views: 4990

Re: Cyclist spits at me and makes a buzzing noise !

You could speed ahead of them, on a really fast bike, then drop the tacks. But not if you expect to see them again at a stop light. Come on Dan, don't give the jerks any ideas. tacks aren't particular about whose tires they flatten. A few years ago I was on a charity ride where someone had thrown o...
by Rassy
Jun 12 2019 12:01am
Forum: E-Bike Technical
Topic: hybrid power w charging via regen brakes ?
Replies: 4
Views: 270

Re: hybrid power w charging via regen brakes ?

My inclination is why charge the battery? In other words, when going on these out of the way spots, just use the gas engine wherever you don't need to run the quieter electric motor, and thus always save some battery to use when needed. Of course you could carry a small generator, but again, if you ...
by Rassy
Jun 06 2019 10:22am
Forum: Battery Technology
Topic: lifepo4 options?
Replies: 4
Views: 262

Re: lifepo4 options?

I understand your concern about the Ping LiFePO4 packs, but I've used them for years with no problems. Some are over 5 years old and still performing good. The protection from the shrink wrap is adequate for normal handling, and as long as they aren't placed against anything sharp or against bolt he...
by Rassy
Jun 02 2019 10:19pm
Forum: E-Bike Technical
Topic: Perfect especifications for hills
Replies: 6
Views: 287

Re: Perfect especifications for hills

The problem with your information is that there is no way to know what actual grades one might encounter, even though the average is under 10%. I.e., very few climbs have a constant slope and will have places that are significantly steeper then the average. This is why I prefer a mid drive or crank ...
by Rassy
May 31 2019 10:41am
Forum: E-Bike Technical
Topic: Bagang bb02 on tern link folder
Replies: 11
Views: 951

Re: Bagang bb02 on tern link folder

If you worry about too much power from a 750W 48V BBS02 you need to just get a programming cable and adjust the current, etc. to suit your riding style. On my trikes, both equipped with a 750W 48V BBS02 the max current is set at 15 amps and the PAS current percentages are at varying percentages betw...
by Rassy
May 30 2019 10:09pm
Forum: E-Bike Non-hub Motor Drives
Topic: Definite guide to suppress BB creacking noise with mid drive kits
Replies: 7
Views: 425

Re: Definite guide to suppress BB creacking noise with mid drive kits

Good idea for a thread. I've had a BBS02 on my tadpole trike for over 4 years and over 3000 miles. Recently it started making that creaking noise you described and of course I ignored it for a while. The torque arm had loosened a bit and the BB nut had loosened. After fixing it all, including making...
by Rassy
May 26 2019 11:05am
Forum: E-Bike Build Threads / Photos & Video
Topic: 2018 Kona Unit BBSHD Build with questions
Replies: 8
Views: 644

Re: 2018 Kona Unit BBSHD Build with questions

I couldn't quite tell from the pictures, but be sure the motor is tight against the down tube. You can use a spacer if needed, such as a piece of hard rubber, etc. This will prevent any tendency for the motor to rock back and forth, which is what makes the big crank nut to come loose. Looks like a n...
by Rassy
May 21 2019 2:06am
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 78
Views: 13270

Re: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue

That software fix that AW documented appears to apply to the voltage problem some experience when trying to use a 52V battery instead of a 48V battery. I would be surprised if it addresses the pedal/throttle issue documented in this thread. However, you will probably be able to change the number of ...
by Rassy
May 20 2019 11:36am
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 78
Views: 13270

Re: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue

LowkeeRider, That's the same display I installed on my Sister's bike and I think I was able to set it up for more than 3 PAS levels, but not sure. She lives 100 miles away so I can't check real easy. I have another one of those displays on the shelf and if you are stuck I will either plug it into on...
by Rassy
May 06 2019 9:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Bacchetta Giro | BBSHD | 14s7p 35E | 500w PAS
Replies: 4
Views: 394

Re: Bacchetta Giro | BBSHD | 14s7p 35E | 500w PAS

Looks like a nice ride. You like speed more than I do, and you did a great job getting that bike set up for what you wanted. Before his stroke a decade ago my brother had a Burley SWB with rear suspension. He was planning a cross country ride, but was looking for a SWB recumbent without suspension f...
by Rassy
Apr 13 2019 6:39pm
Forum: E-Vehicles General Discussion
Topic: Need some guidance on watts up meter
Replies: 2
Views: 425

Re: Need some guidance on watts up meter

In general, you got good advice, but for your application it may not be so good. You have to get access to the positive and negative wires that run between your battery and your controller. If your controller is located within the battery rack that may be very difficult or even impossible. Even if y...
by Rassy
Apr 01 2019 8:29pm
Forum: E-Bike General Discussion
Topic: Giant cruiser budget build
Replies: 89
Views: 6729

Re: Giant cruiser budget build

Glad to see you posting as you go. Looking forward to seeing the end result!
by Rassy
Apr 01 2019 8:27pm
Forum: E-Bike General Discussion
Topic: My solar-assisted custom tricycle FOLLIES
Replies: 1205
Views: 117675

Re: My solar-assisted custom tricycle FOLLIES

You got me! Good see you getting out anyway.