I’ve got an Atlas S1(red box) that has a cracked gear on the axle. It appears to be an 18-tooth gear on the axle. Does anybody have experience replacing the gear, or is there a drop-in replacement that somebody makes for the axle? I do have a spare unit that I can cannibalize, but I’d like to avoid that if possible.
I would recommend contacting Atlas directly via phone or email. They do sell parts and I’ve had good experience & success from them in that regard. Might as well try getting the original part from the manufacturer first.
If that’s not an option then you might be able to locate an Atlas S1 chassis on eBay. Like the Proto 2000 gears, it should be a drop-in replacement.