Bruce,

How do they sound, I mean the chain drive?  I wonder if it's louder than a 3rd Rail E7 with the belt drive?

Is only 1 truck belt driven, the other free wheeling?

I've read where people replace the gears with PD gears or others and change the gear ratio to make the engine slower, is there a chart somewhere that shows which gears to get?

I'd like any system that took up less room, did not stick up in the cabs, and enabled the engine to crawl thru turnouts.

Boy,,,,that even LOOKS noisy!

I've seen quite a few of these at the relatively good price listed.  How do they work for Electronic upgrades?   Do EOB or ERR boards fit easily in the cab/engine compartment space??? with the existing motor and drive system??

Mike CT 

Not bad at that price.  Three problems: split sprockets, split axle gears, and the 8x14 Pittman motor.  All three are easily corrected.  The motor is ok; it just runs hotter than the rare earth motors - by a bunch.

Opinion.  Check out the thread on the 2- rail forum.

The chain drive in the Weaver RS is nowhere near as noisy as the drive in the 3rd Rail E7.  Back in the 90's when I still ran mostly conventional, I came to enjoy the sound.

The chain drive still operates after all these years, although I don't use the RS3 very much.

I doubt I could get used to the E7 drive noise.  However, because of the sound unit, the noise from the drive is a non-issue.