After reading this entire thread, I set up mine by loading program 6, and setting the drive frequency to 3. I'll be testing it out this afternoon. And I won't be running a receiver pack, either, with 3700s.

doug

I run it at 2.5 (2500hz) for 19T 1/12th.

Hey Adrian,

I used my Zero Extreme for the first time today, and up until the second heat, it worked perfectly. Programed on P6 with the drive frequency dialed up to 3 for 19T 12th scale, I was happy with the performance. I wanted a little less brake, though, and between rounds decided to change the brake frequency. Big mistake.

For whatever reason, the ESC would not allow setup changes, and wouldn't load another program. After what I thought was where I had started, the call for the second heat came and I switched the car on to find steering but no motor. I went back to the pits and for 2 hours tried to change any settings in the ESC, with no reponse. I couldn't set up the transmitter or even load a program. When switched on, the screen read HELLO, then -31p. The drive freq. set itself to 20, and wouldn't allow a reset. BTW, I still had full power for steering, too, which worked perfectly.

I missed the second and third round, gave up on the race day, and went home.

Something obviously either failed in the ESC, or I mangled the setup to the point of no return, which I don't think I did. The only other thing that I think may be a problem was possibly a low trnasmitter battery, which I don't think it was, because I still had full range with the steering.

One thing that puzzled me was on startup, the setup screen had the three far right LEDs lit, which I couldn't figure out.


Any ideas? Does this need to be sent in, or is there a simple fix for something I overlooked in my frustrations this afternoon?



doug

I would say 9 out of 10 speedos we get back have nothing at all wrong with them. We bench test them and find there was a user error in setting the speedo to the TX. Most of these user errors are a result of incorrect transmitter endpoint settings. Lots of guys that run stock sedan , oval or 1/12th dial out their brake end point on their radio. If you do this you cant program the speedo and the brake endpoint is too low for the speedo to pick it up. Make sure your full throttle and full brake endpoints on your radio are are 100%...no higher or lower and reset you speed to your transmitter. After that try to reprogram the setting you need.

Hello Adrian,

Could you please explain the part of "Make sure your full throttle and full brake endpoints on your radio are are 100%...no higher or lower and reset you speed to your transmitter". My radio (KO Propo Mars SE) has settigns up to 150, you mean that I should setup the ESC (Rapida Pro) with that settings to 100 and not 150?

Thank you

Nick

Thanks Adrian, here's what was done this morning:

Not wanting to be one of those 9 of 10 people who sends it back because it is set up wrong (could be an issue with the instructions or the way the programming is set up if THAT many repairs sent are due to improper setup, no?), I went back with a clear head today to see if my panic at the track missed something.

After charging the transmitter overnight, I went into the transmitter setup and moved every end point setting to 100%. The ESC still did not take a program. Still reading "-70P" after starting HELLO. I scrolled through the radio menu, and reset all settings to default settings, in case I missed something earlier. The ESC still refuses to take a setting. Still, steering works, but no throttle.

I even swapped receivers in case something may have come loose on the internal board on the receiver. No-go. After that, now the LEDs are flashing, some are lit up and some are not. The FreqPower counted down automatically to .1 and stopped without me doing anything, and is now stuck there. Before, it had been stuck at 20 and wouldn't move.


I don't know how long it takes to inspect the ESCs when they are sent in. I surely am not excited about missing a long period of the indoor season waiting for it to come back. It will probably be in the mail tomorrow to speed up the process, though. :(

Sure sounds like it isn't correctly set to the radio. The fact that it says -31p when you switch on shows that it believes the throttle is in that position - i.e 31% into the breaking region. When you go into the freq it counts down, something that it would do if you pulled back on the stick/trigger.

The radio is a relatively new Futaba 3PK running Spektrum DSM. I would blame the radio first, but nothing was changed on the transmitter between the time that it worked last and when the problems began. Since then, everything was returned to radio defaults (via clearing the adjustment menues), as well as 100% on ALL throttle endpoint adjustments. I have returned to a blank slate with the radio, and regardless of where I have ANY radio settings, the ESC does not behave anything like it did when I first got it.

I'm past the point of no return on this thing. I refuse to miss more races because of it, that's for sure.

Send it back to us so we can look at it. Include a details note with your problems with the unit so we know what to look for.

Thanks,

Adrian

BTW, I just found a 15 year old Tekin ESC in my old parts box, set the radio to zero, soldered everything up, dialed the ESC to neutral, and the throttle to high, and everything worked perfectly; brakes, full throttle... everything. Took about 2 minutes, too, and most of that time was spent trying to take the little rubber covers out of the adjustment holes. The radio is definitely not the problem.

If anyone thinks it's just a setup issue, you can have it for $75 shipped to your door.

Has this ever happened to you?
 

The included picture is the result of my first ever 1/12th race (no I didn't hit anything) and is to date either the 4th or 5th Keyence case I've been through.

Notice in the picture that the screw is even sticking out from the case.

The other times it's happened the result has been the same, although not always the same corner of the Esc.

So has anyone else had this happen to them, even if only once?

Send it in and we will have a look at it.

I just got a Keyence Rapida. Just the standard model... Is there anything I should do with it before I drop it in my 12th scale? Any precautions? Do I really need the capacitor on the motor? Or do they mean the diode? Is there a capacitor I need to put on the actual esc? Also does anybody know the gauge of the wire? It looks like 16 gauge to me, but want to make sure...

Thanks,
Aaron

Were do I send my speed control in I had one go bad at nats last week?

Anyone.....???

I need to know for Friday...