E-bike kit controller type?

[KTP]

Thanks Mike! I appreciate the research. I am going to take apart my controller tommorow and see whats what. If you could let us know what you discover about the cruise and (more important to me) regen, that would be awesome!

 

[auraslip]

It is a good controller, but don't mod the shunt.

At 48v I blew my shunt modded controller when I attempted to run the front hub motor while holding the rear brake.

The regen mod is super easy, and IMHO awesome. Ebikes eat through brake pads. Regen saves them.

 

[mwkeefer]

Actually you can mod the shunt on anything, the question is can the FETs and traces on the PCBs handle it... with a little beefing of the traces on the PCB I solder down the shunt for about 2x current peaks or roughly 70A...

How long it could handle 70A, don't know but it never blew up (yet)... the controller will also cutout after a 5 second stall condition (holding the brake) which at normal currents will protect the controller and motor but not at high current

There are several models of controllers now from e-bikekit, with various onboard features... I think it would be good if when making comments we remark the actual model, for instance my high current models are all EB809XC-A-12 9FET (older programmable models)... The one I modded last night and haven't tested yet is an EB709XC-{explained above, forget already} which I modded for safe operation at 15S to start off but I will move to a final test of 18S with upgraded caps.

I'm curious which model you have which supports regen.. (I knew all this was going to get confusing)

-Mike

 

[ambroseliao]

Ambrose,
Can you give me an idea of what kind of performance (speed) you are getting (along with battery type,size)?

Mwkeefer,
I will look tonight, but I do recall the bottom outside plate on the controller had a white sticker with some specs along with 22A on it. Also, I bought this kit around July 1st of this year, so hopefully I have the most recent version.

Thanks!!!

Sorry for the delayed response!

When I use a 36V Bosch Fat Packs, I get around 22-23 mph. When I used my Bosch Fat Packs along with a 12V SLA booster pack for a total of 48V, I get around 29 mph. The caps inside are rated for 63V, I believe so I couldn't push the controller to 60V since the batteries fully charged, would be over 63V.

I currently use a 6 FET 72V 35A controller from Lyen and I can easily get over 40 mph (I haven't verified it with my GPS yet). Fresh off the charger, my 2S5P Bosch Fat Pack configuration delivers 83.8V so it really flies!

Hope this helps.

Ambrose

 

[KTP]

I finally got around to opening up my controller and it is marked EB809XC-A-12

This came with one of the last of the 700C rear 6x10 kits I ordered around July 1, 2010.

 

[mwkeefer]

old style programmable EB809XC
-Mike