R/C Tech Forums - Spektrum

Stock and 19 turn foam, Standard size receiver, Keyance Rapida Pro ESC, Airtronics 94757 Servo, EA IB4200 cells, No capacitor needed and the fastest EAKD19 turn motors I've ever had in a car. I know quite a few guys who were running mod foam (the ultimate in amp draw and voltage drop) without any capacitors and not one issue.

bxpitbull

09-25-2006 01:31 PM

Quote:

Originally Posted by Jon Kerr

Shi-it. Then help me out please. I am running the GTB/4.5 on profile 3. This is supposed to feed 2% upon trigger squeeze. Maxamps 6000. The three times it has happened, the car just rolled to a stop. How can one tell if the receiver is an old one? I bought it less than two weeks ago. Anything additional you can tell me will be appreciated.

RCGaryK

09-25-2006 03:03 PM

Quote:

Originally Posted by Jon Kerr

Good to hear Jon.

Seano

09-26-2006 12:04 AM

Quote:

Originally Posted by DOTMAN

There was an early complaint too that it wasn't fast enough. I'm not good enough of a driver to feel the difference in speed.

Doesn't matter how good of a driver you are, nobody could feel such a small difference in speed. I mean it only adds 0.0056 sec with the original system and 0.003 sec with the pro series to the response time. :)

coons88

09-26-2006 05:26 PM

1 Attachment(s)

Quote:

Originally Posted by coons88

I have come accross a new problem with Spektrum.

Equipment:
RC12L4
Tekin G-10pro+
Spektrum SR3000 RX
Reedy Ti 10x2
KO 949
IB4200SHV
Futaba 3PK running standard spektrum module

Problem:
Some times when I turn the car on channel 1 and 2 seem to clash with each other. I turn on the car, and the servo will be like vibrating, and same with the motor, when you hold the car you can feel it vibrating. When you accelerate, the motor will go 100%, but also the wheels will turn right without touching the steering, you can turn the wheels using the throttle. And same when you brake, the wheels will turn left whilst the brakes come on. When you turn right and leave the throttle alone, the servo will start to vibrate (it sort of does very fast pulses between -5 and positive 5) it doesnt go full lock like it should. At the same time the motor will start moving at about 20% thorttle. When you turn left the brakes come on about 20% and the servo once agian just basically sits at neutral vibrating.

To fix the problem I have to turn everything off and unplug the servo and esc and then plug them back in again and it will then work fine. It probably happens about once every 15 times I turn it on. No big deal but its kind wierd, and a pain in the ass. I have tried the cap, doesn't fix it.

Anyone had this problem?

Ahh found the problem! Nothing wrong with Spektrum. The attached picture should explain it. I fixed the problem by poking the contact back into place, and put a small bit of masking tape over those contacts so if it pops out again it wont come into contact with the other plug.

Thanks for the help anyway RCGaryK

RCGaryK

09-26-2006 06:06 PM

I actually had the same thing happen on my Tekin Mini Rage. Ok, makes sense now. I ened up replacing my connector with new pins and all and that seemed to fix the problem. Good to hear it was something simple

Jon Kerr

09-27-2006 12:52 PM

Quote:

Originally Posted by Seano

With my first system (one of the very first ones released) it wasn't really a matter of actually feeling any major delay. It's hard to describe. I just started to struggle on the track. The car didn't feel right, it didn't feel like it was reacting the same way it used to. It was just weird. I didn't attribute it to the Spektrum for a long time. I figured there was something wrong with the car, I was just struggling, etc... Then it was suggested to try standard 27 band stuff and viola! That car felt right.

But any issues that the original system had have been all solved. There's no funny feeling with the new stuff, no delays, no shut off's, nothing.

Scottrik

09-28-2006 05:49 AM

I'm finally looking to go Spektrum on my cars (been flying with one all summer!!) but I've got a couple questions...

I'm interested in the lap counting feature, does the sensor for that plug into the receiver or is there a separate module into which any/all sensors plug?

How/where does one read the laptimes?

Thanks,

Scottrik

RCGaryK

09-28-2006 06:23 AM

Quote:

Originally Posted by Scottrik

There's a telemetry module that the sensors all plug into. Its the same size as the SPM3500 micro receiver. To pick up the laptimes, you need a lap trigger (SPM1330- http://www.horizonhobby.com/Products...ProdID=SPM1330 ). Other than that, you should be good to go

RCGaryK

09-28-2006 06:23 AM

double post

Scottrik

09-28-2006 06:56 AM

Quote:

Originally Posted by RCGaryK

There's a telemetry module that the sensors all plug into. Its the same size as the SPM3500 micro receiver. To pick up the laptimes, you need a lap trigger

That's what I was afraid of...not too keen on adding the module as there's not a whole bunch of room in my 1/12 cars, especially the brushless Mod car. I had seen the lap time trigger--is that where the lap times are displayed, or...?

Thanks,

Scottrik

RCGaryK

09-28-2006 10:42 AM

No, there's a hand-held receiver that displays and records lap times

http://www.horizonhobby.com/Products...ProdID=SPM1320

Thistle

09-28-2006 08:04 PM

Hi RCGaryK,
I started off using the JR module in my R-756 radio. I had 2 Sr3000 receivers which were giving me the "shut down" issue while racing on carpet. Even the capacitor didn't help. This past spring, the module and receivers were sent in for check-up/updates (through my dealer) and my dealer was told they were now the newest spec. I have not had the chance to test them on carpet since.
In the articles I've read about the new receiver, I've heard there is a coating placed on the circuit boards... My receivers still don't have this coating.
I'm curious now... would this coating further protect my system from shut-down? I have since bought a KoPropo Helios radio with spektrum module and 3 receivers.
Should I considder sending both modules and all 5 receivers in for software updates and circuit board coating?

Stuart.

RCGaryK

09-28-2006 08:32 PM

The conformal coating doesn't have anything to do with the ESD issue. The conformal coating is applied to make the receivers fuel proof and water resistant. The conformal coating cannot be applied to the SR3000 receivers. If you sent your receivers in before the middle to the end of April, I would send them in just to make sure you have the latest firmware. Same thing with the modules.

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