888kt24 said:
Thanks melodious, I have my charger returned to hobby king, hope they'll credit back .
The problem is order something new from hobby king took forever, the last one took 3weeks and one i need for replacing it is in backorder, so hate to wait.
I'm looking for 66,6volt setup,so I'll going to need new controller .
Which one better is it Infineon C 7225NC from ebike.ca,or lyen 6fet 4110 ? Any sugesstion ?
Actually you don't need a new controller, just update the caps you have from 63v to 100v and the fets are rated for 75v, 66.6v nominal is 18S and it should work fine, you will need to adjust the power resistor in the stock controller to accomidate the higher voltage but that's simple and more or less straight forward, anyone of us who have fussed with infineons and many who I think have modded LVC of the controllers to work at 36v and if not.... I can explain howto in a wiki article in days time (preparing to move and moving the 5th so busy till at least the 6th - just taking a break right now) but look for the trace from the variable LM317 voltage regulator and follow it back to the VCC line - those resistors in there, those are the dividers - check their color codes to get their values online using a calculator and then using a same calculator figure a proper R1 and R2 (generic term for voltage divider) - I like to rate mine at 2-4w depending but if they are selected properly my CA claims I pull through .02-.05 A or roughly (on 18S pack) 1.52w to 4.536w idle with the power switch on (ignition wire connected).
The trick is knowing the range of operation and ensuring you have 12v coming in at absolute LVC... so a divider configured for max voltage of 75.6 (okay you will want to charge your lipo to 4.15v but you won't miss much capacity, trust me - and it's safer for your LiPos) so your actual Max Voltage off charger will be 74.7v - I know many would advise against this and yeah a newer controller might be better but I've used these FETs (in our controllers which came with the Gen2 48v controller) up to 18S with no issues once I replaced the caps.
In either case, in your calculator you can specify the LVC or 3.0v (trust me, this ensures proper high enough voltage at the variable regulator input to sustain the 12V FET Rail) so basically do this:
Input Voltage: 54v
Resistor R1: Specify the R1 you already have on board
Resistor R2: Leave Blank, the calculator will tell you what to replace this one with
Output Voltage: 12.5v
Click calculate and you have the proper R2 which you will put in place.
Now your voltage regulator will work from LVC through nominal and all the way to maximum charge.
That said, I do prefer a programmable controller with multiple speed settings (power levels) such as an ed lyen or eCrazyman - my preference is the infineon EB2XX or EB8XX series controllers, direct drive I prefer the 8XX series for variable regen since your using a Gen2 regen isn't important (freewheeling) so an EB200 series would be fine, there are some minor issues (covered in the forums) about the EB3XX series controllers and there are simple enough work arounds for the various issues - if normal power levels 20A primary and maybe 30A phase (don't do the 2X phase stuff with geared motors, they don't need the low end torque multiplier like DD).
Check my next post for a few suggestions and solutions I've come up with over the past few days / weeks with my GNGv2 on a Dahon Jack 26"
Hope this helps and feel free to PM me if you'd like to be in touch via PM/Email or Phone I can likely help you a bunch!
-Mike