I just couldn't leave well enough alone. My Pershing was running perfectly, and then I had to mess with it. I had ordered metal gearboxes for my Tiger, which I no longer needed, so I decided to put the metal gears into the Pershing gearboxes. After that major pain was over, I had also received a set of metal sprockets for the Pershing. It was hell trying to get them on. There was no amount of "pressing" to get them on, they had to be "tapped" on with a hammer. After wrestling with the tank for about 2 hours, I got it back together and tried to run it. The tracks would barely move! (I attributed most of this to the metal gears needing to "break-in") I tried to run it for a while to break the gears in, but the strain kept making my Scorpion esc go into overload protection. The gears must be in too much of a bind, and I can't believe how hard it was to get the sprockets on. I consider myself a decent mechanic and tinkerer, and have been around cars, dirt bikes, and r/c cars for years, but man, I feel like a boob trying to work on these HL tanks. So far, I'm 2 for 2, ruining both of them. I'm beginning to think this hobby is not for me. At first I thought, "Hmmm.. .R/C tanks are slow and couldn't break anything, and shouldn't be too hard to work on." I was definately wrong.

I just propped the tank off the ground so the tracks were clear then I connected the motors to a battery and ran them till the battery went flat, then I repeated this but running them in reverse. Now it runs fine.

Sounds like some thing is binding. When I put the metal gears in my Tiger never had to brake them in it ran fine from the start. Seeing as I do not have a Pershing I don't know about the gear box shape is it the same as the Tiger? they sell a gear box for the Tiger and the Pershing that would lead me to believe their is a difference. I would try running the tank with the top off to see if it is binding with the upper hull that and you could see what is going on in side.

Jeff

Its not the metal sprockets on too tight is it m8?Try turning the sprokets to see if there moving freely?
dont give up bro [sm=thumbup.gif]

I have the HL Pershing also, I also had to "tap" my spockets on...I have not taken them off...nor do I want to try. I was one of the furtunate ones in that so far I have not had any problems with the pershing. When I first put the metal tracks on they were really tight..but on used all the links that came with it and so far the tracks have stayed on with no problems.

Yes, I've had to use my dremel tool to sand down the shafts for the sprockets to fit. I also disassembled and filed the gears that were binding then put them back together.