Search found 2006 matches

by Russell
May 30 2015 2:47pm
Forum: Battery Technology
Topic: Pure sine wave inverter not powering 400W charger
Replies: 20
Views: 1667

Re: Pure sine wave inverter not powering 400W charger

If the charger is like mine it has a very poor power factor which makes it draw far more VA than the 600W rating of the inverter. I monitored my charger with a Kill-A-Watt meter on the AC side and a Watts-Up meter on the output side while it was charging a battery. For a 191W DC output the charger d...
by Russell
May 29 2015 11:30pm
Forum: Battery Technology
Topic: 36v 12 amp battery early cut out
Replies: 5
Views: 414

Re: 36v 12 amp battery early cut out

Works well with good power until I've used about 4 amps and then it cuts off. Battery re charges fully (2 amp charger) inless then 2 hours. Why is the BMS doing this. Can it be reprogramed? Please describe the battery you're using; manufacturer, chemistry & type of cells. What is the starting pack ...
by Russell
May 26 2015 8:37pm
Forum: E-Bike Technical
Topic: Need help with Battery pack that just arrived with kit.
Replies: 4
Views: 319

Re: Need help with Battery pack that just arrived with kit.

Actually the link you provided has a picture that tells you what the wires are for:

Red/Black to controller +/-
Red/Yellow for charging +/-
2UEFTS_YTF96.jpg

-R
by Russell
May 25 2015 12:20am
Forum: E-Bike Technical
Topic: Problems with Q100 kit - total beginner
Replies: 10
Views: 556

Re: Problems with Q100 kit - total beginner

Got a Q100 kit for my wife's beach cruiser. First problem - rim on motor is much narrower than stock rim which is 1.75. Tires used on cruiser are 2.125. Is this safe on the narrow rim? (no size marking on the Q100 rim). Also the narrow rim does not allow brake contact before the v brake arms hit th...
by Russell
May 10 2015 8:05pm
Forum: E-Bike Technical
Topic: putting 800w controller into 250w hub motor
Replies: 3
Views: 482

Re: putting 800w controller into 250w hub motor

Hi, I want to try to make my 250w ebike move faster. I tried putting it 48v, but It only goes to 34 km\h (+6 km/h). so I want to replace the 250W controller and put a 500w-800w controller. Do you think It will make my ebike faster? Your post lacks a lot of details so I will respond with some genera...
by Russell
May 10 2015 2:16pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Gravity Hybrid E-Bike
Replies: 3
Views: 1172

Re: My Gravity Hybrid E-Bike

After just a handful of rides I have rebuilt this bike. There was nothing wrong with it however the Outrider motor I installed on my Jeep Comanche bike turned out to be a disappointment so I returned the YOUE front motor/wheel to that bike restoring it to the configuration I so much enjoyed last sea...
by Russell
May 09 2015 10:51am
Forum: Battery Technology
Topic: 0-60v 1000W power supply - forget meanwell
Replies: 80
Views: 8361

Re: 0-60v 1000W power supply - forget meanwell

Make note of the following on the ALiExpress ad; Specification Operation Voltage Range 170 – 264Vac Operation Frequency Range 45 – 65HZ Output Voltage Range 0 – 60V Output Current Range 0 – 17A Efficiency (220Vac/full load) ≥89% Full Load Input Current(220Vac) ≤5.1A No Load Input Current(220Vac) ≤18...
by Russell
May 08 2015 9:10pm
Forum: E-Bike Technical
Topic: how to bundle power wires from battery to controller
Replies: 12
Views: 1428

Re: how to bundle power wires from battery to controller

I like to use 2 and 3 conductor black rubber jacketed cable instead of individual wires. This is what I expected to find at Hobby King (I know it's at hardware stores), and not finding it is what prompted some research, and eventually this thread. Heat shrinking the connector ends over the cable ja...
by Russell
May 07 2015 6:31pm
Forum: E-Bike Technical
Topic: how to bundle power wires from battery to controller
Replies: 12
Views: 1428

Re: how to bundle power wires from battery to controller

I like to use 2 and 3 conductor black rubber jacketed cable instead of individual wires.
IMAGE001.JPG
IMAGE001.JPG (90.63 KiB) Viewed 1360 times
-R
by Russell
May 07 2015 4:57pm
Forum: Battery Technology
Topic: 0-60v 1000W power supply - forget meanwell
Replies: 80
Views: 8361

Re: 0-60v 1000W power supply - forget meanwell

I think you are being enticed by a subliminal message... ps.jpg But seriously it does look like a good buy. If you need a quiet charger with high current output for quick opportunity charging and have uses for a variable power supply (and who doesn't) then go for it. For charging at work when you're...
by Russell
May 07 2015 1:32pm
Forum: Battery Technology
Topic: 0-60v 1000W power supply - forget meanwell
Replies: 80
Views: 8361

Re: 0-60v 1000W power supply - forget meanwell

To date my power supply has... - always been reliable - is noiseless - charge the battery to the correct voltage and amp. I have a watt meter integrated to my bike so I can see it reached max voltage - i've been using it daily for over 6 months and no problem at all - it''s one of the most compact ...
by Russell
May 07 2015 11:00am
Forum: Battery Technology
Topic: 0-60v 1000W power supply - forget meanwell
Replies: 80
Views: 8361

Re: 0-60v 1000W power supply - forget meanwell

Back to the original topic. The power supply looks nice...and if you want a wide range adjustable power supply it's handy to have, but if you just want to charge your battery I'd just buy another charger. The ones I bought from BMSbattery are a bit loud but they are internally adjustable for voltage...
by Russell
May 07 2015 10:36am
Forum: Battery Technology
Topic: 0-60v 1000W power supply - forget meanwell
Replies: 80
Views: 8361

Re: 0-60v 1000W power supply - forget meanwell

Could you take a video with this way ? I really want to look at this. If the current is decreasing when the voltage is increasing, your power supply is REALLY BAD. No I can't take a video. And NO this is EXACTLY what should happen when using a power supply to charge a battery. You set the desired v...
by Russell
May 07 2015 9:59am
Forum: Battery Technology
Topic: 0-60v 1000W power supply - forget meanwell
Replies: 80
Views: 8361

Re: 0-60v 1000W power supply - forget meanwell

You CAN charge a Li-ion battery fully with a power supply but it's best to use one with a current limiting feature. Say you're charging a single cell, just set the power supply to 4.20V and the current limit to an appropriate value and go. The power supply will maintain a CC for a period of time, de...
by Russell
May 06 2015 6:51pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Jeep Comanche E-Bike
Replies: 20
Views: 8287

Re: My Jeep Comanche E-Bike

I'm probably going to move the YOUE motor currently on my Gravity bike back to this bike then make that one rear drive. -R And that's what I did. I removed the YOUE front wheel from the bike I just built up and returned it and the 45mm wide fenders back to this bike. IMAGE021.JPG IMAGE026.JPG From ...
by Russell
May 06 2015 11:14am
Forum: Motor Technology
Topic: Sensorless, halls, encoders, motor efficiency?
Replies: 28
Views: 4417

Re: Sensorless, halls, encoders, motor efficiency?

bowlofsalad wrote: Any chance you've made some dynamometer or motor efficiency graphs for comparison? I would literally pay to see them.
Have you read Justin's thread about his FOC controller testing?

http://endless-sphere.com/forums/viewto ... 50#p981766

-R
by Russell
May 05 2015 9:34pm
Forum: E-Bike General Discussion
Topic: 12.5 AH now is 8.3 ??????
Replies: 11
Views: 1142

Re: 12.5 AH now is 8.3 ??????

rider95 wrote:That's what HPC is saying the shunt value is 1.88 and I have the ca that has the speedo cable and mag pick up so how do I change the shunt value in my ca?? I have a program cable I bought with my ca do I use that ??
The instructions are all in the second link in my previous post.

-R
by Russell
May 05 2015 12:55pm
Forum: E-Bike General Discussion
Topic: 12.5 AH now is 8.3 ??????
Replies: 11
Views: 1142

Re: 12.5 AH now is 8.3 ??????

I have E mailed HPC after reading the reply's I have not read anything about this before, so I buy a kit from EMV3 a mac with speed controller and CA but the battery is from HPC . It works fine I run it for a yr the ca displays 12.6 before it cuts out as I ride and learn what it will do I notice th...
by Russell
May 04 2015 2:37pm
Forum: E-Bike Reviews & Testing
Topic: Dual "fast wind" mini-motor build
Replies: 35
Views: 15142

Re: Dual "fast wind" mini-motor build

What really led me down this path is: The original build was a single mini MXUS on the frt. Later, when I wanted to go faster, I could not safely go back to the original (non-motor) frt. wheel because of the metal that was removed from the drop-outs. . Hmmm...now you've given me an idea how to use ...
by Russell
May 04 2015 2:16pm
Forum: Motor Technology
Topic: Sensorless, halls, encoders, motor efficiency?
Replies: 28
Views: 4417

Re: Sensorless, halls, encoders, motor efficiency?

OK, OK I'll try to stay on the subject :o Something interesting you might want to pursue is changing the timing of the hall signals. I know it can be used to increase motor speed but I wonder what it does to motor efficiency. There is someone on the for sale thread selling a device that changes timi...
by Russell
May 04 2015 10:20am
Forum: Motor Technology
Topic: Sensorless, halls, encoders, motor efficiency?
Replies: 28
Views: 4417

Re: Sensorless, halls, encoders, motor efficiency?

OK if you want to squeeze every little bit of efficiency out of your system then you start with the low hanging fruit - losses due to resistances. First get a controller with IRFB3077 or 4110 FETS. Next use some good high C-rate batteries. Then use large gauge wire for all connections. A direct driv...
by Russell
May 03 2015 7:55pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Jeep Comanche E-Bike
Replies: 20
Views: 8287

Re: My Jeep Comanche E-Bike

I started out with the MXUS with a Grin 48V Li-on Batt. and I didn't have anything to compare with then, I know now that it is a little brute of a mini motor, able to run all day @ 23 to 24 mph without even getting warm. And this last year, I ran it with that hot Infineon controller and while it wo...
by Russell
May 03 2015 7:07pm
Forum: E-Bike General Discussion
Topic: 12.5 AH now is 8.3 ??????
Replies: 11
Views: 1142

Re: 12.5 AH now is 8.3 ??????

Yes, the CA needs to know the resistance of the shunt in the new controller otherwise the values it gives for current, Ah and Wh will not be correct. The shunt resistance value may be printed on the controller, if not you'll have to calibrate it using an ammeter or in-line wattmeter.

-R
by Russell
May 03 2015 5:44pm
Forum: Motor Technology
Topic: Sensorless, halls, encoders, motor efficiency?
Replies: 28
Views: 4417

Re: Sensorless, halls, encoders, motor efficiency?

I didn't do any formal testing of sensored vs sensorless however I have kept a detailed log of my rides since 2005, several years before I electrified . Originally I used it to see what small changes to my bikes and how training affected my average speed. I continued this when I started E-biking to ...
by Russell
May 03 2015 4:13pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Jeep Comanche E-Bike
Replies: 20
Views: 8287

Re: My Jeep Comanche E-Bike

Did some more experimentation to find the root cause of the front end shaking violently over 20 mph. Removed motor/wheel, fenders, Schwalbe Big Apples (28x2.15) tires and rear bag w/ battery, tools, tube, etc. Installed new front wheel and original rear wheel both with 700x40C tires and Nashbar self...