Torq 2 with ecrazyman controller

[fishingpaul]

I am now running my torq 2 with an ecrazyman 36v 350 watt 25 amps controller,after trying out several known working wiring patterns i have arrived at phase wires green to green,yelo to blue,blue to yelo,and hall wires yelo to yelo,green-blue,blue-green,it is now running very smooth throttle responce is as before no load speed is as before with the ezee controller,but on the road speed is not matching the previous speeds i obtained at 36v,even at 48v it is reaching little more flat speed than with the ezee controller,could this mean 350 watts is under powered for the ezee motor or is 25 amps not enough,overall for a £28 including postage from china controller it does run very smooth and pretty much as before, much better than i expected considering the cost of an ezee replacement one at £125.

 

[emissions-free]

Fishingpaul,

that is a bit strange, that controller should be powerful enough. What batteries are you using? Have you got a multimeter to check some voltages?

 

[john]

I asked ecrazyman about his 25A controller recently and he told me that 25A is peak current, it only supplies 13A continuously.

 

[flecc]

I asked ecrazyman about his 25A controller recently and he told me that 25A is peak current, it only supplies 13A continuously.

And that's definitely not enough for the eZee motor, at least 20 Amps continuous capability is necessary.
.

 

[emissions-free]

The current demand goes up significantly, by a mutiple of 48/36, so 1.33 the current at standard supply voltage. If you can get a multimeter connected in line, with at least 20A capacity, that will give you some idea of how much current the controller is actually pulling. Better yet use a shunt resistor or current clamp as multimeters don't like having 20A through them for any length of time.

It's shocking to see how much current these controllers pull especially if it's a rather meaty motor and with over volts on top. I have a 25A controller that is rated for 500W at 36V but it was current limiting at low speeds when connected to a 500W at 36V motor. I had to send it back to the manufacturer and it was modified and now functions ok.

Your likely very conservative rated 250W nominal motor at 36V is in reality pulling a lot more than that at 48V. The additional cost for a more powerful controller isn't a big deal IMO, but the extra bulk is a bit of a pain. If you have a look at the attachment it shows a small 15A UK legal controller that I've been testing next to an Ipod classic. Compare that to the 25A controller, rated 500W at 36V that I mentioned above Not so easy to tuck that little beauty away unnoticed.

 

[john]

Infineon make small powerful controllers. 20A is about $80.

 

[emissions-free]

Cheers John. I'll look into them some more, but 20A is still only a baby

 

[mechaniker]

Hello

ecrazyman is able to deliver many different controllers from continuous
350watt (peak 700Watt) up to continuous 2500Watt (peak 6000watt)
from 6fet´s up to 18Fet´s controller.
from 36Volt up to 90Volt
And in next month (i hope) comes a new 6fet controller with low temperature

so everybody can choose the controller what he want from ecrazyman or me
if somebody want a special setup for the controller, in some boarders it is possible to setup the Ampere current, the low voltage-protection, the 3speed when you using the 3speed controller. Battery recharging is also possible, cruise-control and so on

If you use the Puma 36v-500watt i suggest the 12fet´s controller with continuous 750watt (peak 1200Watt)

regards
frank
(Das Elektrorad von Frank Scheftlein: Komplette Pedelec- / Elektrofahrrad Umbausätze und Ersatzteile von Bafang, Puma (eZee), Tongxin u.a.)

 

[fishingpaul]

Fishingpaul,

that is a bit strange, that controller should be powerful enough. What batteries are you using? Have you got a multimeter to check some voltages?

I am using 3 or 4 12v 14ah lead acid batteries depending on 36v or 48v, these are the same batteries as i was using before at 36v with the ezee controller.

 

[fishingpaul]

I asked ecrazyman about his 25A controller recently and he told me that 25A is peak current, it only supplies 13A continuously.

That is probably it then i have been playing around with the wiring for ages,and it only crossed my mind yesterday that maybe the controller does not have enough output.

 

[fishingpaul]

And that's definitely not enough for the eZee motor, at least 20 Amps continuous capability is necessary.
.

Maybe i should look at it as a good thing,it will try and assist at least a little up to to 24mph at 36v,and it still climbs reasonably well and i guess it should take less out of the batteries and more out of me,plus if i run it at 48v it will climb a little better than before and beat almost any cyclist i am likely to encounter,do you think a 48v 10ah lifep04 would cope with this.

 

[fishingpaul]

Hello

ecrazyman is able to deliver many different controllers from continuous
350watt (peak 700Watt) up to continuous 2500Watt (peak 6000watt)
from 6fet´s up to 18Fet´s controller.
from 36Volt up to 90Volt
And in next month (i hope) comes a new 6fet controller with low temperature

so everybody can choose the controller what he want from ecrazyman or me
if somebody want a special setup for the controller, in some boarders it is possible to setup the Ampere current, the low voltage-protection, the 3speed when you using the 3speed controller. Battery recharging is also possible, cruise-control and so on

If you use the Puma 36v-500watt i suggest the 12fet´s controller with continuous 750watt (peak 1200Watt)

regards
frank
(Das Elektrorad von Frank Scheftlein: Komplette Pedelec- / Elektrofahrrad Umbausätze und Ersatzteile von Bafang, Puma (eZee), Tongxin u.a.)

Is there any way of converting this to english,thanks paul.

 

[Alex728]

the version I see (on Firefox) contains a drop down box with a direct link to Google Translate, which provided a reasonable translation apart from the word Benzinknattermaschine (some sort of slang term used to describe a petrol powered vehicle)