GT3B Hack Question and Answer Thread

[losikid]

Originally Posted by the_ocho

Can anyone help me out real quick I'm on my way to a comp right now and can someone tell me how to set up a 3pos third channel on my controller.

Long enter REV
Scroll to 3, press enter
scroll to CH3, press enter
scroll to NOL, press enter
scroll to 100, Long enter
press back or end afew times

thats it

[skinner]

After messing with radio last nite and got good understanding how works I can say its nice!! Have lipo coming as notice feels bottom heavy and AA's don't cut it.
Austin did you get the wheel issues sorted? And any other wheels besides ones you have listed?

[ik632]

Originally Posted by Charlie-III

What servo?
Do you run an external BEC to it (if it's over ~200inoz)?
Did you try another servo in the steering port to see if it's a RX issue or the servo?

The servo is a Hitec 645. I think it's only about 80inoz of torque (had it in my Stampede and just use for testing). I think it's always had a big of noise even at neutral and even other servos when plugged into 1 did similar. I'm wondering if it's my receiver or if I pinched the antenna wire in the radio when I was working on it. I need to order some batteries, so I figure when I do I'll just get another receiver or two.

[monkeyracer]

Originally Posted by losikid

Yea, it looks like it's the same factory. Are the two upper adapters the same size in yours?

No, the two small ones looked the same but one fit the GT3B and the other was a little big. I wonder if they sent you the wrong ones?

[losikid]

Originally Posted by skinner

After messing with radio last nite and got good understanding how works I can say its nice!! Have lipo coming as notice feels bottom heavy and AA's don't cut it.
Austin did you get the wheel issues sorted? And any other wheels besides ones you have listed?

No just 8 spokes and 18 spokes. Adapters are too big so i include some shim that needs to be installed between the adapter and steering peg.

Originally Posted by monkeyracer

No, the two small ones looked the same but one fit the GT3B and the other was a little big. I wonder if they sent you the wrong ones?

Yea both of the ones in mine are just a hair too big

[ik632]

Ok, here's the massive power button and 5v blue 30ma LED from RadioShack wired directly to the new power regulator.

Pics as promised:



The more I use the new power button the more I like it. It's got a good solid click when you turn it on and then the LED lights up. The old button I couldn't tell if it were on or not. I have noticed that it doesn't beep when you turn it on now. Is that normal with the new firmware?

[losikid]

WOW, why such a big button? wouldn't it be ideal to make a more low profile power switch?

[ik632]

I looked at all the switches RadioShack had and liked that one. The stock button kept getting turned on when I had it in my travel bag. This one it hard to push and you can rest the weight of the radio on it without being accidentally turned on. I think it actually looks cool though

[Francois]

Originally Posted by ik632

I looked at all the switches RadioShack had and liked that one. The stock button kept getting turned on when I had it in my travel bag. This one it hard to push and you can rest the weight of the radio on it without being accidentally turned on. I think it actually looks cool though

This is a hudge switch for the super mega power mode....


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I am here: http://maps.google.com/maps?ll=30.078849,-95.460146

[ik632]

So, I did some testing of my radio and receiver tonight and it's definitely glitching bad. I did pinch the antenna cable a little when putting the two halves together, but the wire looked ok when I checked it out. I do remember it glitching even before pulling it apart where the steering servo would jitter back and forth. I did check the servos on another receiver/radio (Traxxas) and it was OK.

What's the best way to troubleshoot this? I don't have another GT3B radio or receiver. I was going to order some 3s packs from HobbyPartz so I could order another receiver while doing that to see if it's the receiver. How often does just the receiver go bad? I don't want to spend that money just to realize it's a bad radio now.

[losikid]

Originally Posted by ik632

So, I did some testing of my radio and receiver tonight and it's definitely glitching bad. I did pinch the antenna cable a little when putting the two halves together, but the wire looked ok when I checked it out. I do remember it glitching even before pulling it apart where the steering servo would jitter back and forth. I did check the servos on another receiver/radio (Traxxas) and it was OK.

What's the best way to troubleshoot this? I don't have another GT3B radio or receiver. I was going to order some 3s packs from HobbyPartz so I could order another receiver while doing that to see if it's the receiver. How often does just the receiver go bad? I don't want to spend that money just to realize it's a bad radio now.

Its probably a bad rx, but i haven't heard of this before so...

[ik632]

Well, I guess the credit card gets some more work out tonight. There goes my "budget build"

Anyway, I'll order a new RX with my 3S packs and see if it runs any better. If not, there will be a lightly used but slightly glitchy FS-GT3B in the for sale section

[losikid]

Hey Guys, GT3B alum steering wheels and foam grips are in stock.

Home - OverkillRC

[ik632]

Nice wheels!

So I did some further testing and the new servo is glitchy on my Traxxas receiver/radio as welll, I didn't see it well last night but saw it this morning. I'll start a new thread for the hitec 7954sh.

[skinner]

Ik632 good to see ya found your issue.

Austin nice wheels, itching to order one soon as standard wheel feels lil to cheesy....been reading manual you have trying to understand how to change servo speeds which only work on #1-#2 channels correct?

[ik632]

Yeah, working through the servo issue. It may be that it's supposed to work that way. I'm posting a video later tonight in another thread.

For the wheel, I did the bearing mod and it's a lot smoother and feels much more beefy. Need to do a better wheel at some point, but I want to figure out if my radio and gear is working correctly first.

[ik632]

Does the center cap pop off so you can screw the wheel on?

[skinner]

K ya Gt3b owners....I put one of the rx's in my sc truck which works great with that radio, one thing, how do you set failsafe on this tx/rx? .
Btw Austin do you sell wheel foams separate? And will it work on stock wheel?

[losikid]

Originally Posted by skinner

K ya Gt3b owners....I put one of the rx's in my sc truck which works great with that radio, one thing, how do you set failsafe on this tx/rx? .
Btw Austin do you sell wheel foams separate? And will it work on stock wheel?

I think the button on the rx sets fail safe some how, i'm unsure though

yes i sell foam separate, yes it fits the stock wheel

[skinner]

K thanks. I found this elsewhere and said put your throttle where you want( neutral or brake) and than push little button on rx.