9920 damage need fixin

[squeeforever]

Actuallly, on the 9920, there arent holes. Its just a spot and the are soldered on very lightly. they would be alot stronger if there were holes. I would know, I've broke 2 off :mad:. Luckily I was able to solder them back on. Its not really that hard, I just dabbed a little solder on the board (since theres almost none from the factory) and placed them both on there at the same time while in the jumper and touched it with the soldering iron, and presto! Done...

[BrianG]

Wow, that sucks. Sounds like it will probably happen again then no matter what you do. Well, in that case, you could program it the way you want and then just solder across the two solder pads. If the gap is a little too wide, use a very short piece of wire to bridge it. You'll have to desolder them again if you ever need to re-program it though...

[brijar]

Well, I got un-lazy and tried to solder the right way. I tinned the spots on the circuit board and tinned the wires. Then I put the tinned wire on one of the tinned spots, and put my iron to it, and it went right on. I did that to the other one and just stripped the non soldered ends of the wires and twisted them together. It seems to be working great, but when I'm driving it around in my Rustler with 1 7-cell GP3300 battery because my Maxx is down right now, the truck will be going full throttle and just stop for about 1 second, then go again. It is very annoying, especially when you are trying to climb a 60* loose dirt hill with RWD and on-road tires:035:. I think this is cogging, but I'm not sure. I tried putting in a fresh pack, but it did it even worse. I'm charging my RX pack right now, so maybe that will cure it. It has never done this before in my Maxx or when I had it in my Rustler.

Thanx for the help,
Brijar!!!

[BrianG]

Good job on the soldering. The only problem with simply twisting the wires is that you'll get oxidation on the exposed wires and the contact will become poor. Also, the vibration may momentarily break contact in the twist causing some weird stuff to happen.

Cogging usually only happens at very low speeds because the ESC can't sense the motor position so it turns and stops turning in rapid succession.

[brijar]

Well, I stripped them about 1/2 and inch and twisted them all the way up very tightly. After my Rx pack is done charging, I will see if the glitching goes away. I have noticed that if a battery wire touches the antenna tube, or gets withing 1/2 inch of it, then there is bad glitching, so I have made sure that there is nothing touching the antenna tube except the antenna wire. Speaking of antenna, my old one was just recently ripped out of my Traxxas 3-Channel Receiver when I plowed into a 3-rail fence in midair:032:, so I replaced it with 27 inches of Futaba Rx wire. I'm not sure this is causing the glitching as I replaced the wire in the same fashion on my other Traxxas Receiver and it does not glitch. Thought you ought to know in-case that is causing something.
I'm glad I used my 40w iron instead of my 80w iron:036: :007: :032: on that circuit board.
BTW, that was a really quick reply:027:! After I posted, I edited my sig for about 5 minutes and bam, there you are! Thanks a lot!

Brijar!!!

[brijar]

Well, that seems to have done it. After charging the Rx pack it only glitched once for the rest of the run. My Duratrax Digital piranha said it put in about 600mah. My Rx pack is 1100mah, so it was pretty empty.

Thanx a lot for the help guys,
Brijar!!!