The rest of the car came apart easily.  There was no visible wear on any parts, apart from a few scrapes on the chassis and rear motor guard of course.

To my slight surprise, even after reading that the car was fully ball raced, it was still a surprise to see the full compliment of 14 ball races included even in the gearbox. Anywhere that feasably could be ball raced, was. Great stuff.
I noticed the ball races were fairly well packed with grease, so I put all the cars ball races in some motor spray for de-greasing and oiled them with some trinity royal oil.  This frees things up greatly and would help the standard motor propel the car.

The rear Universal Joint drive shafts look very capable of handling anything you can throw at them with large diameter plastic halves and a brass centre. The steel dogbones are pinned to the plastic UJ half and a 'C' clip keeps it all together.

The UJ's were still when I got them, I greased them and used a scalpel to bend the mating parts, it helped but they should free up more after some more running.

If you have ever seen the likes of an Associated Stealth or Losi XXX transmission, then you’ll be at home with the Frog gearbox.  It really is like a shrunken version of those transmissions with a top steel layshaft, idler and large diff gear, all spinning on ball races.

The gears are wide and look capable of taking plenty of torque.  The gears all came well smeared in grease from the factory, which should make for a long life. 

I wanted the most speed I could get out of the Frog however, so removed most of the grease to reduce friction. An alloy motor plate screws onto the side of the gearbox which provides a solid mount for the motor and dissipates heat well.

The ball differential is tiny and is similar to those found in the rc10B4 or XXX buggys, but without any internal ball races. 

The diff action spins on 8 main diff balls and 6 smaller thrust balls.  The diff halves / out drives are all plastic though metal ones will be available as a Hop Up from Tamiya.

Diff parts	Thrust bearing

The transmission is protected by a dual pad slipper clutch on the layshaft.  All the mating surfaces are plastic, with the plastic spur gear clamped at either side by a plastic plate, all held together with a spring and nut.