Search found 2057 matches

by Rassy
Jun 25 2020 11:24pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5776
Views: 491220

Re: new eZip motor

Good price on the breaker, and with free shipping. Should be good for the job based on what the seller wrote. In the first diagram the positive doesn't go to the meter. Probably just a drawing error? Otherwise all three diagrams are identical going from the battery to the controller. Depending on th...
by Rassy
Jun 25 2020 4:49pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5776
Views: 491220

Re: new eZip motor

Here is a link to another site that lists their breakers by amperage rating:

https://www.electricscooterparts.com/ci ... akers.html
by Rassy
Jun 25 2020 4:44pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5776
Views: 491220

Re: new eZip motor

Ok LC, I have edited my previous posts, mostly related to your diagram that labeled the two switches as kill switch 1 and kill switch 2. I think it reads better now and will be less confusing. One thing though, in my experience, even if a controller provides for an on/off power switch the capacitor ...
by Rassy
Jun 25 2020 3:55pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5776
Views: 491220

Re: new eZip motor

I'm sorry LC, but I missed something in your diagram and did not notice that your power switch is not in line between the battery and the controller. I will have to modify my previous response, but have to look at it a bit first. Edit, I see there was a previous diagram that did have two switches be...
by Rassy
Jun 25 2020 3:48pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5776
Views: 491220

Re: new eZip motor

I do normally leave my meter running for my entire ride even though I sometimes turn off the power switch which makes the trike inoperative and also turns off some lights that come on automatically when the power switch is turned on.
by Rassy
Jun 25 2020 3:02pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5776
Views: 491220

Re: new eZip motor

To read my comment correctly, I always think of all current flowing from the battery, at least in the case of the positive current. So the word ahead of the meter would mean between the battery and the meter. I do use the DC breaker in place of the fuse since they have the same purpose. Think about ...
by Rassy
Jun 24 2020 8:22pm
Forum: E-Bike General Discussion
Topic: new eZip motor
Replies: 5776
Views: 491220

Re: new eZip motor

LC, your last diagram is very close to what I have used for years with one small variation.. I have always used the original Watts Up meter, which was expensive and is no longer available, but their instruction sheet always required you to power up the meter before powering up the controller and whe...
by Rassy
Jun 06 2020 9:50pm
Forum: Battery Technology
Topic: Noob to EVs looking for BMS recomendations LiFePO4 12S
Replies: 7
Views: 227

Re: Noob to EVs looking for BMS recomendations LiFePO4 12S

Charge at too high a rate at too cold a temperature and you've instantly murdered the pack, rendered it to scrap, unrecoverable. Thanks John. Makes sense, if I have seen specifications for low temperature/charging limits I probably ignored it since weather here is not too extreme. But that does bri...
by Rassy
Jun 05 2020 3:49pm
Forum: Battery Technology
Topic: Noob to EVs looking for BMS recomendations LiFePO4 12S
Replies: 7
Views: 227

Re: Noob to EVs looking for BMS recomendations LiFePO4 12S

I understand that you are looking for some special monitoring capabilities, but I have been sold on the Signalab BMS that Ping uses on his batteries. All his batteries are LiFePO4 so his 12s BMS should be perfect for your application. The main reason I like these is the 12 LEDs that all light up whe...
by Rassy
May 31 2020 10:08am
Forum: Battery Technology
Topic: A123 26650 FIRE
Replies: 14
Views: 350

Re: A123 26650 FIRE

AW wrote: There was a Ping battery fire on ES some years ago, but I can't find the thread now, and don't recall the circumstances. AFAICR it happened while someone was riding thru a park, and they had to throw the battery out of a basket? AW, good memory, except I don't think it was a Ping battery, ...
by Rassy
May 30 2020 8:56pm
Forum: Battery Technology
Topic: A123 26650 FIRE
Replies: 14
Views: 350

Re: A123 26650 FIRE

I would like the opinion of some of you concerning relative safety of LiFePO4 batteries versus other Li-Ion batteries. My preferred and often recommended battery is a Ping LiFePO4 battery that is constructed using a prismatic type of cell. I have been under the impression that these cells would not ...
by Rassy
May 18 2020 9:50am
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 138
Views: 31962

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

Brad, nice that worked out for you. The problem at low speed that you mentioned is also present in the older BBS02s that worked "properly". I think what happens is right at the point where the throttle takes over for the PAS system there is a very small dead space where the throttle signal isn't str...
by Rassy
May 16 2020 2:34pm
Forum: E-Bike Technical
Topic: Big mid-drive motor, bypass IGH?
Replies: 27
Views: 968

Re: Big mid-drive motor, bypass IGH?

I played around with plug braking in about 2005. The platform consisted of a cheap mountain bike with poor brakes and a pusher trailer with two brushed 36V hub motors. On every ride I had to start by going down a quarter mile hill with up to a 15% grade and ending with a sharp corner at the bottom. ...
by Rassy
May 10 2020 1:04pm
Forum: E-Bike General Discussion
Topic: Backward Pedalling to clean chain
Replies: 9
Views: 661

Re: Backward Pedalling to clean chain

So long as the voltage range is known, Ah is a much better measure than Wh for both storage capacity and energy usage over time. I agree. I've been told to go with Wh lots of times for it's meaning across different voltage systems, but all my systems and those I've done for others are 48 volt syste...
by Rassy
May 05 2020 9:35am
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 138
Views: 31962

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

Nice job mayon, glad you were able to fix your BBSHD. Your fix is pretty close to what I would do if I ever need to fix another BBS02 in the future. The nice part about your fix, which is similar to what I proposed in my post just ahead of yours is that it keeps you from having to do any real tight ...
by Rassy
May 04 2020 3:05pm
Forum: E-Bike Technical
Topic: Bafang bpm speed sensor error
Replies: 4
Views: 256

Re: Bafang bpm speed sensor error

I am still unable to give you any real help. When all components like that do not come as a kit (i.e. motor, controller, etc.) it can be very hard to get any support. I have tried to contact Bafang directly a couple of times in the past with no success, even the dealers seem to have trouble getting ...
by Rassy
May 04 2020 11:14am
Forum: E-Bike Technical
Topic: Will this setup work?
Replies: 20
Views: 522

Re: Will this setup work?

Pretty much agree with the details Bob listed. In my humble opinion the requirement for both hill climbing and long distances on the flat is where a mid drive, such as a BBS02, really shines. Some big differences between us, since I am 80 years old, weigh 200 lbs, and currently ride a recumbent delt...
by Rassy
May 03 2020 4:49pm
Forum: Battery Technology
Topic: Battery advice for a novice first bike build
Replies: 23
Views: 526

Re: Battery advice for a novice first bike build

I don't understand why a novice would be advised to work with volatile chemistries, particularly if living in an apartment. I do understand they are lighter and have higher c rates and are initially less expensive, but that doesn't make them a good choice for many of us. At some point something will...
by Rassy
May 03 2020 4:09pm
Forum: E-Bike Technical
Topic: Bafang bpm speed sensor error
Replies: 4
Views: 256

Re: Bafang bpm speed sensor error

jonny, sorry I can't help you directly, but as a new kit your vendor should be able to help. Normally I would not expect the motor to be directly involved in sending a speedometer signal to the controller/display. What I would expect is for the kit to include a magnetic pick up either from one of th...
by Rassy
May 03 2020 11:37am
Forum: E-Bike Technical
Topic: Will this setup work?
Replies: 20
Views: 522

Re: Will this setup work?

Welcome to the forum saad. One small issue, it seems that many new members neglect to enter their country when signing up. In your case when you mentioned a speed of 25 we have no way to figure out if you mean 25 MPH or 25 KPH. :D Unlike Bob, I am a big fan of crank drive systems for casual riding l...
by Rassy
May 03 2020 11:11am
Forum: E-Bike Technical
Topic: BBSHD throttle
Replies: 4
Views: 211

Re: BBSHD throttle

EDIT: And welcome to the forum Tony! It is hard to test the throttle on the bench because the motor goes to full speed with such a small amperage requirement. If the throttle works very smoothly you may be able to notice slight differences in speed at several points, but I would not worry about it u...
by Rassy
May 03 2020 10:06am
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 138
Views: 31962

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

Yes, as long as you stop turning the pedals the throttle works correctly. However, I represent the mild exercise and recreation style of riders, normally cruising along on paths at about 10 MPH in a very low PAS setting and just grab a little throttle when encountering a short hill or crossing a roa...
by Rassy
May 02 2020 10:15am
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 138
Views: 31962

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

@arcsat, thanks for posting the detail pictures of your fix. Good to hear it worked out for you. @opperpanter, thanks for the update concerning that the current stock from EM3EV still has the throttle issue. I would not hesitate to purchase one if I was in the market, but would plan to do the hardwa...
by Rassy
Apr 28 2020 5:46pm
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 138
Views: 31962

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

Does "full throttle" mean wide open throttle or full throttle range? I contacted EM3EV after this problem showed up and one of his guys did a test for me that confirmed they had adjusted some of the settings so that the throttle didn't go wide open immediately but it still didn't deliver full range ...
by Rassy
Apr 28 2020 2:07pm
Forum: E-Bike Non-hub Motor Drives
Topic: DIY Fix for BBS02/BBSHD Pedal/Throttle Issue
Replies: 138
Views: 31962

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

opperpanter, I have no idea how valid anything is in that link but I think it depends on which firmware you may have in your controller. I did what you are suggesting, i.e. putting a good spare on the shelf. So currently one trike has an early model BBS02B controller that works properly, the other t...