KO PROPO Staff

Looks like your setting is too aggressive initially for a 7T. Do you have the Current limiter on?

Try this:

FREQ0=37
FREQ1=37
FREQ2=37
FREQ3=35
FREQ4=33
FREQ5=32
FREQ6=30
FREQ7=29
FREQ8=28
FREQ9=27

Pro Models

At the moment the current limiter is set at 260amps is it too high? do you think its possibile to post or pm me a complete profile for a 7t.

Thanks

DirtyDog3375

iTrader: (37)

I would be interested in the same profile as well.

rbboy

hey guys! im kinda having problems with my 1-month old KoPropo VFS Hara Twister 2.1... it was perfectly fine until last night my car would stop after hitting 10-12 laps. i installed a newly cut motor twice and the same thing would happen... now i am checking it with different motors, it seems to be working fine with 27T,23T & 19T but when i change to modified (a DC Ti3 6x1 & DC XXX-Cobalt 8x2) the motor would respond with just a blip on a quick full-throttle. but when you slowly pull the trigger it would run okay.. hope anyone can help me out on this. also, i added a Novak 36a schottky diode and last week the original Ko Schottky exploded.. guess it was because i kept on hitting the breaks.. i am using a spool.

Carlo

Pro Models

Carlo I had the same problem when my other vfs-1 use to heat up whilst using 7 singles however since I changed to the Pro version and installed a heat sink I never encountered this problem again accept from the problem mentioned above.

daniz24

I believe its the thermal cutoff. Try using a fan blowing to the esc if you run hot motor. I've never had problem with the new VFS1 Competition (carbon case) because off the higher thermal protection.

KO PROPO Staff

Well, you may be experiencing the current limiter coming on. I would turn it off to see if it solves your problem. Try Hara's setting from the World Championships from our site. They were using 7T motors then. Hara's Setting
-Robert

KO PROPO Staff

Carlo-
Are you using the same profile for 6x1 as you are for your 27T and other motors. The settings should be completely different for the two motors. Try the Hara setting I posted for your modified motors.

If you damaged the shotki diode then you may have damaged the FETs also. If you were only using the schotki diode SINGLE that came with the esc, then you probably damaged the esc. The SINGLE is only good for up to 16T motors. Anything lower will require the DOUBLE or two singles.

Our single shotki diode is rated at 80A and the double is rated at 160A. It would be safe to say that the novak diode is not enough for modified.
-Robert

Glowster21

iTrader: (136)

Had some bad luck with my VFS1 Pro today. Programmed it for stock on my computer, shut it off and plugged it back into the receiver. Went to the track for some practice and the ESC wouldn't turn on. Rewired the motor and battery wires and still nothing. I always run the CAP and Stock Schottky diode and the esc was working great prior to this. Any ideas? I was running with 19 turn before I re programmed for stock...HELP!!!

chris_morrison_

same thing happend to me today.
so i changed out the battery and it worked fine

DirtyDog3375

iTrader: (37)

Just got my VFS-1 Pro comp and so far so good. I am chasing a baseline profile for mod touring (on asphalt) using 7-9t motors on a large technical track. I have tried Hara's profile and my comm came back burnt and motor was very hot, but runtime wasn't a problem. I have also tried Masami's profile (mod tourer) and it was better but I was looking for some more rip/punch (inital to mid throttle). I feel that the rip/punch is somewhat "soft" with these two profiles.

However, from my limited understanding of this esc, if I program lower drive freq in the first 16 stages, I will heat up the motor more and possibly burn the comm even more.

How do I not cook the motor whilst increasing punch/rip (inital and mid throttle)?

Any help or advice would be greatly appreciated.

Spud_J

If your running on large tracks at predominantly mid to full throttle I would raise the frequency at those settings, that should help with your comm life a little. Then the next step is to try lowering the frequencies at 1/4 to 1/2 throttle to get a little more punch.

Glowster21

iTrader: (136)

Tried that too and nothing worked. Looks like it's going in for repair.

KOSTAFF,
How long does it usually take to get an ESC returned once it gets to you? Also, do you contact me via the info on the form for payment information? Just curious.
Thanks

Scrad

iTrader: (16)

I just sent in a speedo to Robert and it came back in about a week. Not too bad. Just put your info on the form or email Robert and he will get back to you. He emailed and called me. Great service...

KO PROPO Staff

It sounds like you may have damaged the transistor and the esc will not turn on. I will contact you via the information that you provide on the request form. At this moment, repairs are same day - 1 day turn around.
-Robert