4200XL gearbox failure out of the box?
 

Got my hydraulics all filled up and took it out for the maiden voyage to find the lower is not functioning really at all. Started to get into it a bit but it doesn't look good. Bent motor shaft? Will see what RC4WD says after I send them the vids. A little disappointing to not even get a battery through it and I've gotta start wrenching unless I'm missing something here that someone knows of?

https://www.youtube.com/watch?v=8Km26FwRQyM

https://www.youtube.com/watch?v=lVjj6_1bRe0

Re: 4200XL gearbox failure out of the box?
 

I believe it's a spur gear gearhead... I could see it that one small gear might fail, but to have two flawed gearheads on the same model that is brand spanking new :thinking:, that's a new low for this idiot company to have sent out without catching with QC... :rolleyes:

Good luck Benny fixing their never ending mistakes in model engineering

Re: 4200XL gearbox failure out of the box?
 

I suggest you contact Tang from Eagle machinery to see what the issue is, send him the links to your videos. He usually answers within a day or two.
eaglemach@foxmail.com

Re: 4200XL gearbox failure out of the box?
 

Thanks for the responses. Going to check the ESC's as well, the motor's cutting out is interesting too. Very odd for both tracks to be flawed out of the box and I'm wondering if it's something electrical and not mechanical though looks like it could be both.

Re: 4200XL gearbox failure out of the box?
 

I'd bet doll hairs to dollars that it's entirely mechanical failure... either there's some grit in the gearheads or some component of it is bent... the motors are stalling out. Take one gearhead apart at a time, just incase you have a brain fart while taking it apart & forget exactly how it goes back together - you'll have the other gearhead to refer to. ;)

Re: 4200XL gearbox failure out of the box?
 

Right on. I'm a chef in the real world so always gotta have your "Mise en place" which translate nicely to r/c organization as well.

Re: 4200XL gearbox failure out of the box?
 

It's almost like there is a set screw that's not tightened on the motor shaft or something. Just catching enough the move the track slightly.

Re: 4200XL gearbox failure out of the box?
 

Yea, gonna get into the motors/planetary's tonite to see what's up.

Re: 4200XL gearbox failure out of the box?
 

Found some culprits. Negative ESC wire not in the powerblock. Not 100% sure if it was this way to begin with or while I pulled the electronics out, either way was probably the motor problem. Big issue is the planetary's are thrashed, debris and gear teeth everywhere. Hoping to get some new ones sent to me.
Tracks seem to be a bit tight, could this cause this much damage? I'm used to r/c tanks having some slack in the tracks, same on heavy equipment? Does have spring loaded idlers.

Re: 4200XL gearbox failure out of the box?
 

This china hoe DOES now come with spring loaded idlers?

Tracks too tight would only matter if there were alignment issues with driven gear/rollers/idler wheel... could cause some unnecessary load on the motors, but not enough to destroy the gearheads.

Can't see your pics... some members use attachment photos & the pics will show up, sorta. I'm not sure how it works; I've always used an external photo host site to photo link pics to forums...

Re: 4200XL gearbox failure out of the box?
 

Yes, it has sprung idlers now. I have the latest version 1.5. Not sure why the pics aren't loading up. I've never had to use an external service, may have to here I guess. Good to know on track tension.

Re: 4200XL gearbox failure out of the box?
 

Here's a quick video of how to post pictures on forums

http://youtu.be/ZhYe94pcvzs

Re: 4200XL gearbox failure out of the box?
 

Mine is 1.5 version and it did not have sprung adjusters on it, I had to make my own, also if you run it in clay or dirt that packs easy it will destroy your motors and break tracks.

David

Re: 4200XL gearbox failure out of the box?
 

Interesting. So is mine a prototype or demo model hence the busted up planetaries? We'll never know I'm sure.

Re: 4200XL gearbox failure out of the box?
 

I'll give it a try just so everyone can see these planetaries straight out of the box.

Re: 4200XL gearbox failure out of the box?
 

Couldn't get photobucket to work so made the pics smaller and they kinda work. Wire not installed and planetary. You can see shavings and busted off teeth in the grease on the cap and of course the broken teeth off the gear. No joy.

Re: 4200XL gearbox failure out of the box?
 

Photobucket isn't loading my pics atm either, must be a site problem... which happens on occasion.

I see your attached photos now... wow, quite obvious couldn't be bothered to properly/carefully mesh the gears during assembly & crushed them together.

Your last pic looks like a looper/jumper wire & should be inserted into 3rd terminal from the left... the exposed wire doesn't look to be soldered either, just twisted up :confused:... what a bunch of rookie fools... just makes me sick to see this company put out the trash they do in this hobby

Re: 4200XL gearbox failure out of the box?
 

Wow, that sucks! Clearly that wasn't checked before it was shipped. No quality control there. Hopefully they send you new parts ASAP although they shouldn't have been needed in the first place if it was checked.

Re: 4200XL gearbox failure out of the box?
 

Yes I see, have been through this before, one on each side and another again. Finally decided to go with the upgraded system of RC4WD and these work good. I think Cooper bought the upgrade to but he dident think they had the power of stock, but I sure do?

The stock ones are not designed to last with the torque and resistance of the tracks in dirt, they work for a while but eventually start to bust teeth, same with the turntable motor and planetary.

Really to bad this was already messed up right when you recieved it. Make sure you E-Mail them back about the problem they will replace the parts for free.

David

Re: 4200XL gearbox failure out of the box?
 

Yea I already tinned and got the jumper in place. 2nd planetary is even worse. I only counted one existing tooth on the final gear. Hope to get some replacements once I hear back from Tang and RC4WD. Would love to know what happen to these. Wonder if it was the 8 year old's first day on the job that does the "tested before shipping." Moved it a foot heard some crunching and said yup....good to go. If nothing else it's provided me some laughs and a crash course on how this clone goes together.