Search found 30 matches

by Tordnado
Apr 10 2018 12:45am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4363
Views: 611920

Re: Cycle Analyst V3 preview and first beta release

What is happening is that the CA has cranked ThO down to the minimum in a futile attempt to slow the bike going downhill and there is a huge error wound up in the speed PID controller. It takes a while to counter that large error - your reported delay. You are entering the realm of PID tuning - whi...
by Tordnado
Jan 19 2018 2:22am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4363
Views: 611920

Re: Cycle Analyst V3 preview and first beta release

Hi I have bought and installed the CA3 some time ago but I have an issue: * I live in Europe so im using PAS and have limited speed to around 25 km/h * Throttle only for 0-5 km/h * Front hub MAC 700W * Controller Infineon The problem is that when going downhill I will exceed the 25km/h setting (even...
by Tordnado
Jan 27 2017 2:45pm
Forum: Motor Technology
Topic: Infeon controller too much torque
Replies: 10
Views: 895

Re: Infeon controller too much torque

I am getting there :) Last test: "Phase current" 38A and "rated" 30A. It is a lot better without feeling weak. The max A draw during my ride was 25A vs the original settings 30A so I should be fine. i will turn turn down the phase even more and turn up the rated amps. I believe this is the way the c...
by Tordnado
Jan 25 2017 8:39am
Forum: Motor Technology
Topic: Infeon controller too much torque
Replies: 10
Views: 895

Re: Infeon controller too much torque

The Kelly ones I found were pretty expensive as well as the CA which I understand is based on Infeon right? Would be nice to get input on the cheaper BMSbattery controllers. Otherwise I have to go lower on the phase amps but it does reduce climbing capability. If I have control of the max A drawn to...
by Tordnado
Jan 25 2017 3:31am
Forum: Motor Technology
Topic: Infeon controller too much torque
Replies: 10
Views: 895

Re: Infeon controller too much torque

I have a throttle but I removed it since we are not allowed to have throttles here in EU. I know my power is over the legal 250W but I have limited my speed and power is not so easy to measure for the cops. Any input on the bmsbattery controllers? Are they not as hard hitting as the Infeon? I really...
by Tordnado
Jan 25 2017 2:06am
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

I made a mistake above and wrote that my commute is 0,8 miles. It is 8 miles. What I found yesterday seems correct however very strange. Today I used 45,5 Wh again almost the exact same figure as the other rides regardless of speed setting. However looking at the Ah used the meter says 2,7Ah and tha...
by Tordnado
Jan 24 2017 3:22pm
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

I think I have found something but I will need to repeat it to trust it. It seems that the meter is showing accurate Ah but not accurate Wh when discharging. However when charging both Ah and Wh matches????? It makes no sense at all but let me do it again tomorrow. On my ride home I have been using ...
by Tordnado
Jan 24 2017 3:12pm
Forum: Motor Technology
Topic: Infeon controller too much torque
Replies: 10
Views: 895

Re: Infeon controller too much torque

The controller is in the link. Its a 25 amp 6 mosfet controller. The PAS "display" does indeed control/change amps as well as top speed, it is clear both in terms of acceleration and visible in my wattmeter https://lunacycle.com/batteries/chargers/watt-meter-battery-gauge/ maybe you are thinking abo...
by Tordnado
Jan 24 2017 9:09am
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

The maths was for the theoretical part of it before I could do testing and it matched so thats good! however it does not solve the problem. The meter at the wall outlet was a double check to see if the other meter seemed to match and it did and that is good to know. I am doing what you are asking f...
by Tordnado
Jan 24 2017 7:26am
Forum: Motor Technology
Topic: Infeon controller too much torque
Replies: 10
Views: 895

Infeon controller too much torque

Hi. I have this MAC-motor kit http://em3ev.com/store/index.php?route=product/product&product_id=244 I use it on my commuter and it is front wheel drive. I also have this http://em3ev.com/store/index.php?route=product/product&path=41_57&product_id=144 and this http://em3ev.com/store/index.php?route=p...
by Tordnado
Jan 24 2017 6:56am
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

The maths was for the theoretical part of it before I could do testing and it matched so thats good! however it does not solve the problem. The meter at the wall outlet was a double check to see if the other meter seemed to match and it did and that is good to know. I am doing what you are asking fo...
by Tordnado
Jan 23 2017 3:14pm
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

Wow some good old maths still works. I charged 117Wh vs expected 116Wh so that seems right. The plot thickens! I will measure discharge and charge tomorrow from a full charge this time. Shouldn't make a difference but anyway. By the way the measurement i did before the charger did not have enough re...
by Tordnado
Jan 23 2017 1:33pm
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

I wont be able to ride until tomorrow but I´m experimenting now. From the socket I´m pulling 115 W and trough the earlier discussed meter 100W so 85% efficiency of the charger which seems reasonable right . I am charging from 52,7V/13S= 4,05 ~80% charge to 54,6/13=4,20 ~100% charge. The battery is s...
by Tordnado
Jan 23 2017 12:48pm
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

I have the same type as Luna sells but I set up the connectors so I can use it both for charge and discharge. The battery is new. Around 5 cycles. It is a hailong shark pack 13S 4P Samsung 30Q. I do not pull high C. I am using it in europe so I have set the top speed to 25-27 km/h (16-17mph) and I l...
by Tordnado
Jan 22 2017 2:06pm
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Re: Charge vs discharge Wh? Huge difference!

Some more background I have one of these: https://lunacycle.com/batteries/chargers/watt-meter-battery-gauge/ I measure between the battery and the controller for discharge and between charger and battery for charge (seems like the only way to do it!?) I have tested 3 rounds and they all had a big di...
by Tordnado
Jan 21 2017 1:32pm
Forum: Battery Technology
Topic: Charge vs discharge Wh? Huge difference!
Replies: 27
Views: 1468

Charge vs discharge Wh? Huge difference!

Hi I have a 13S with Samsung Q30 cells. I rode a short ride today with a newly charged pack and the watt meter showed that I used 55Wh. I put the same wattmeter on the charging process (2A) and I charged 200 Wh. Almost 4 times as much!? I understand there are some losses but I didn't think it would ...
by Tordnado
Jan 03 2017 8:07am
Forum: Battery Technology
Topic: charging 14S with 13S charger.
Replies: 5
Views: 420

Re: charging 14S with 13S charger.

Thanks a lot for that!

Did you try lowering the 90% and 100% to get it to 54,6?

Can I measure voltage directly at the charger leads when it is not connected to a battery or will it be more precise/accurate to let it fully charge the battery and see where it ends up (risky on higher settings!)?
by Tordnado
Jan 02 2017 2:41pm
Forum: Battery Technology
Topic: charging 14S with 13S charger.
Replies: 5
Views: 420

charging 14S with 13S charger.

I had a misunderstanding with EM3V and they sent me a 52 V charger with switch for different charge http://em3ev.com/store/index.php?route= ... uct_id=120. We solved the misunderstanding but now I have 52 V (14S) charger and a 48 V (13S) battery. I realized that the 50% (53,2 Volt) setting should gi...
by Tordnado
Jan 02 2017 5:13am
Forum: E-Bike General Discussion
Topic: Trailriding short steep hills. Low top speed.
Replies: 32
Views: 2393

Re: Trailriding short steep hills. Low top speed.

I got my build ready and it looks like the attached pic (dont have an updated picture where everything is ready but I can fix it). I just tested it in the garden and on pavement and it runs very well. Using Carls secret juice (I think it is called) for programming and for a final verdict I have to r...
by Tordnado
Dec 12 2016 2:03am
Forum: E-Bike General Discussion
Topic: Trailriding short steep hills. Low top speed.
Replies: 32
Views: 2393

Re: Trailriding short steep hills. Low top speed.

Thanks for all the good input guys. I did have another very close look at adding an Bafang BBS02 and I am pretty sure it will work so I placed an order with http://www.eclipsebikes.com/ Their pricing is good and low freight cost to Sweden (country in Europe) and no tax or customs fee. Hopefully a qu...
by Tordnado
Dec 10 2016 4:41am
Forum: E-Bike General Discussion
Topic: Trailriding short steep hills. Low top speed.
Replies: 32
Views: 2393

Re: Trailriding short steep hills. Low top speed.

Thanks for directing my but isn't that the Q128H as in the H-model without cassette?

What about this one: http://www.elifebike.com/peng/iview.asp ... 2S8V.1T5PW it is rated 192 rpm @ 48V. The "best" I've seen so far from an ok seller. How do you think I stands up to the Q128C?
by Tordnado
Dec 09 2016 4:28pm
Forum: E-Bike General Discussion
Topic: Trailriding short steep hills. Low top speed.
Replies: 32
Views: 2393

Re: Trailriding short steep hills. Low top speed.

I have been reading and reading and I think I have found the best reasonable solution (probably not) but I need your input. Please update with your result... If you are asking for my "best reasonable solution" it was the Q100, Q128 or the bafang swx but I find it hard to find comparable figures. I'...
by Tordnado
Dec 09 2016 3:12pm
Forum: E-Bike General Discussion
Topic: Trailriding short steep hills. Low top speed.
Replies: 32
Views: 2393

Re: Trailriding short steep hills. Low top speed.

I agree it is incorrect or too simplified to call it just torque. It should be torque at maximum efficiency and the corresponding speed at that efficiency and torque at 1/2 and maybe 1/4 speed. I guess one quickly moves in to graphs to describe it! Anyways I'm still open for suggestions on a motor t...
by Tordnado
Dec 09 2016 9:34am
Forum: E-Bike General Discussion
Topic: Trailriding short steep hills. Low top speed.
Replies: 32
Views: 2393

Re: Trailriding short steep hills. Low top speed.

Agree, though I get the feeling Op wants supplementation (~200w), but wants it geared for 10mph or so max. I'd think a small geared should hold up fine for that, and deliver some nice supplemental power for climbing when volted/geared properly? Personally I'd be more concerned with any handling def...
by Tordnado
Dec 09 2016 2:01am
Forum: E-Bike General Discussion
Topic: Trailriding short steep hills. Low top speed.
Replies: 32
Views: 2393

Re: Trailriding short steep hills. Low top speed.

For serious off road riding, you need a serious motor. That's the MAC. em3ev.com/store/MAC Anything less and you'll probably be blowing out gears and clutches riding off road. There is a cassette option for the MAC. A 10T would probably be low enough. There is a 12T option that goes even slower. A ...