Alan B
100 GW
Some folks take the Magura and cut it to make a half twist. I use the standard uncut Maguras on my 3 ebikes. Nice linear control, and enough quality for e-motorcycle use.
Correct.lollandster said:As far as I understand I will fry the CA3 if I have the Thun connected while running at 74 volt. So to do this I need to cut the 10v supply (white wire) and feed the Thun with 12v from a dc-dc step down converter? Is this correct and the only thing I need to do?
Not sure of your packaging requirements, but here's an ES thread about re-purposing laptop power supplies. A quick eBay search turns up some 12v candidates for less than $10. The ones for the Asus netbook are only 3A and look nice and small (about 1x1.3x3.34in - 26x35x85mm). This approach gets a waterproof package with easy hookup.lollandster said:Does anyone know where I can get a small dc-dc converter with input max >84v? The only ones I find are 10A and relatively big. I can build one myself if someone can point me to the correct semiconductor, the only ones I have are LM7812 and LM317.
I thought it was a pretty good trick, as well...lollandster said:I have a lot of 12V switching power supplies laying around, but I never knew they could do DC-DC.
Not at this time. It seems to always restart using the preset in use at shutdown.izeman said:just wanted to ask if the 'fail safe' start is implemeted. what i mean is that the ca restarts with a predefined mode no matter what you used before.
A couple more details:Michall2008 said:I'm having throttle connection problem, just can't get it work.
The set up: throttle is connected to CAs Thi, DP cable is connected to SA-shunt, there are 3 wires running from the SA-shunt black, yellow, green and 3 wires running from the controller black, red, blue i connect the blue and the green wires push the throttle and nothing happens.
CA settings:
THROT IN
POWER
Min - 0.99 Volts
Max - 3.99 Volts
Fault - 4.49 Volts
THROT OUT
Voltage
Min 1.00 Volts
Max 4.65 Volts
Up Ramp 500
Down Ramp 500
Have you verified that the voltage on the controller 'Throttle IN' pin (blue wire) follows the OUT reading on the diagnostic screen?
Good.Michall2008 said:Yes, when the throttle connected directly to the controller it work fine.
Good.Yes, The throttle is connected to CAs Thi plag via the original connector (all three wires)
Good.Yes, when i push the throttle the diagnostic numbers follow and the throttle gauge is also moving.
Good. But very puzzling....I connect a voltmeter across the black (SA shunts) and blue (the blue and the green are connected) wire, the voltmeter reading follows the ThO of the CA.teklektik said:Have you verified that the voltage on the controller 'Throttle IN' pin (blue wire) follows the OUT reading on the diagnostic screen?
amberwolf said:some older controlelrs' ca ports put th e ca trhottle line to the brake pad instead of throtlte pad. i had to fix mine.
you wouldn't want t o wire a new on eup that way. i maaeant that on some old controllser that cmae wth ca connecotrs, they could already come wired like that. mine was. ihad to move hte controller thi to the throtlte pad from the ebraek pad.Michall2008 said:Instead of connecting the CAs ThO to controllers Thi, connect brake signal pin to controllers Thi ?
teklektik said:Good. But very puzzling....Michall2008 said:I connect a voltmeter across the black (SA shunts) and blue (the blue and the green are connected) wire, the voltmeter reading follows the ThO of the CA.teklektik said:Have you verified that the voltage on the controller 'Throttle IN' pin (blue wire) follows the OUT reading on the diagnostic screen?
Hmmm - so it seems the V3 is working and is producing the configured output voltage, but the controller doesn't like it.
No - this does not apply - you are using a new V3 shunt not a controller DP connector...Michall2008 said:Instead of connecting the CAs ThO to controllers Thi, connect brake signal pin to controllers Thi ?amberwolf said:some older controlelrs' ca ports put th e ca trhottle line to the brake pad instead of throtlte pad. i had to fix mine.
Okay. So it seems by (2) and your previous post that the CA ThrOUT voltage on the blue/green wire junction of CA ThrOUT and controller ThrIN is appearing relative to the CA Gnd but not relative to the controller throttle Gnd. According to (3) the throttle Gnd and CA Gnd may be the same. Puzzling. (Actually looks like either a bad blue/green connection or a different ground reference - neither of which seem likely...)Michall2008 said:1. Its 1KW/36V YK43 brushed controller
2. The voltage is always zero
3. The same thing here, always zero
4.As a load im using 2 halogen bulbs, pulls about 900W at WOT. Start glowing at 1.8, WOT is 4.83 (I'm using a not very accurate voltmeter so +- 0.1v)
Cashed in on this deal and just got the package from JRH with free Priority Mail. Great price and service!teklektik said:Actually, Denisesewa just posted in another thread about a good deal from JRH - about $40 shipped.