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-   -   3PK - Spektrum System (https://www.rctech.net/forum/radio-electronics/67107-3pk-spektrum-system.html)

JLock 04-07-2005 03:09 PM

You are absolutely correct, Mr. Fontaine.:nod: On one of my cars, I had to trim it to the left quite a bit to compensate for it throwing my wheel to the right of what I had a center. I was too lazy to undo and re-do the servo horn.;)

Galifrey 04-07-2005 03:10 PM

John

My 3pk system using 9 cells is flickering between 11.5 and 11.7v very fast...

It may be the way the module is consuming power...

Doesnt appear to be a problem, I have another coming soon so I will compare the 2

:D

IslandBwoy 04-07-2005 06:53 PM


If everyone gets one, I'll be the only guy there with crystals.
good point. Thats one way to look at it.

IslandBwoy 04-07-2005 07:04 PM


The strangest thing happened yesterday with the second transceiver that I was about to send back to Horizon. I decided to give it one more try before mailing it in. I hooked it back up in the car, went back through the binding steps, double-checked that my transmitter was on PPM, and it decided work properly and bound itself to the transmitter module. I tested it out again and it works fine so for the time being, it escapes being mailed in to Horizon for evaluation.
Just my two cents about this is that you may not have turned the radio off and back on after you switched the mode. If i remember correctly this is required and will not work properly unless you do so. Likewise, i'm not sure if just using the backlinght switch to change such settings work the same as actually turning on the radio. So for those of you that are still setting up your systems try those two things just to be sure everything works as expected b4 shipping it off and having to wait the time to have it retunred. Just my thoughts.

Nice pics by the way. I think i'm going to try your apprroack.

IslandBwoy 04-07-2005 07:07 PM

Hey minidriver,

You mentioned that you dremeled just the center brace of the cover. I'm not sure what you are talking about by doing so and dont want to assume so could you post one more pic of the underside of the cover for clearance.

Thanks again,

You mod looks really nice.

Difuser 04-07-2005 08:25 PM

Th original window for the "gold" PK has a center bar on the module cover. It is not on the inside of the cover it is what divides the opening into 2 "slots" In Dave's picture is not shown. On one of the earlier shots you can see where the bar is still in place.

syndr0me 04-07-2005 09:31 PM

Now that I've finally secured a decent deal for mine, I should mention that lots of people from Hong Kong seem to be parting out new 3PK (Megatech) systems, and selling the transmitters w/o servos, modules or anything else. Looks like you can have a new one for under $200 (in black) which can be paired nicely with a Spektrum. I'm aware of the lack of warranty on the Megatech, so I guess I'm rolling the dice.

Hopefully it's not a scam, but the people selling them have crazy feedback scores. The cost of shipping negates the deal a little bit, but you can still keep it close to $200 shipped (controller only) which isn't terrible.

aantonis 04-08-2005 12:21 AM

Megatech is what it is called here in Europe and Asia. Believe me I ve had 2 Megatechs 3PKs so far, the normal and the black one and not a single thing has heppened. That rumor that the Megatechs are crap gets on my nerves.
The only thing that does stand is the US warranty. Nothing will happen to your Megatech 99,9%.

John Fontaine 04-08-2005 05:21 AM


Originally posted by Galifrey
John

My 3pk system using 9 cells is flickering between 11.5 and 11.7v very fast...

It may be the way the module is consuming power...

Doesnt appear to be a problem, I have another coming soon so I will compare the 2

:D

Wow, i'm glad to know this is happening to other people other than me. I'm using 8 GP2100's and it's flickering from 10.3 to 10.6, the same thing happened when I installed 8 fresh energizers. Maybe give Horizon a call and talk and let them know that it's happening to you too. Tell them that I reported the problem two days ago....maybe they can trouble shoot why the spectrum module is doing this to "some" 3PKs, but not all of them.. I've considered buying another 3PK, but then I thought that was silly since the system seems to be working fine.

John

JLock 04-08-2005 06:45 AM


Originally posted by IslandBwoy
Just my two cents about this is that you may not have turned the radio off and back on after you switched the mode. If i remember correctly this is required and will not work properly unless you do so. Likewise, i'm not sure if just using the backlinght switch to change such settings work the same as actually turning on the radio. So for those of you that are still setting up your systems try those two things just to be sure everything works as expected b4 shipping it off and having to wait the time to have it retunred. Just my thoughts.

Nice pics by the way. I think i'm going to try your apprroack.

My 3PK was in PPM mode. I ran the Hitec 03mm receivers in all of my race equipment which requires the transmitter to be in PPM mode. It strangely did not work and then on my last try before sending it back to Horizon and it strangely just started working. Hopefully, the next RX transceiver I buy will not put a scare in me like this second one did.:sweat: It is still working fine in static tests and will be put to use this coming weekend to see if it will continue to work. Thanks for you suggestion.;)

jeepnyy 04-08-2005 09:23 AM

What will be your recommnedation for servo~~~standard high torque or DIGITAL servo to pair with Spektrum ? :tire:

Thanx

Henry E.:batman:

JLock 04-08-2005 09:31 AM


Originally posted by jeepnyy
What will be your recommnedation for servo~~~standard high torque or DIGITAL servo to pair with Spektrum ? :tire:

Thanx

Henry E.:batman:

Either one will work fine with the system. I use the regular servos because of the receiver pack power drain of the digital servos. I use Hitec 525s through 645s with no problems.:D

minidriver 04-08-2005 10:05 AM

islandbwoy:

I just saw your post. no need for a picture of the underside of the cover, as it remains untouched.

It is as Diffuser said, no modiification of the underside of the cover of the gold 3PK cover.

Step one. I put a cut off wheel on the dremel and simply cut out the 1/4" X 2" center bar from the cover, which leaves you with a neat rectangular hole in the cover. That part is done in 10 seconds or so.

Step two requires a cone shaped dremel bit. You use it to round out the one corner of the rectanglear hole (if you are looking down at the 3pk with the transmitter in hand, the corner in the upper right) to accomodate the spektrum antenna. Take your time and dremel it bit by bit, you don't need to take much out (and you obviously can't put the material back once you make the cut). Then use just the tip of the cone bit to dremel out just a touch of left side of the rectangle (about 10 o'clock) to give clearance for the bind button.

Anyone know a store that has extra Spektrum receivers in stock??

JJ187RC 04-08-2005 10:24 AM

minidriver

Call Mik'es Hobbyshop in the Dallas/Fort Woerth Texas area. They have a bunch of them in stock if I remember correctly. The number is 972-242-4930, just ask for the car department. If you call today, ask to talk to Tye.

Galifrey 04-09-2005 02:02 AM

Well thats me hooked...

Used it at my 1/10th touring car club last night and I dont think I have ever been as in touch with the car as I was then..

I must have been getting loadsa hits before, my driving has never been better, and thats with a 4 week layoff...

I was using the number 2 rx not the rx that came with the system (thats in my 1/8th Buggy) and observed no lag or control issues all night...

Wicked system...

Bye Bye Crystals forever

:D


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