Is it worth it? what should I do?

From the been there done that club, I got a box of prewar American Flyer O "cheap" at an antique show.

I found I need to replace the frame do to broken motor mount, wheels that break if you touch them, front and rear trucks with bad wheels too.

Frame was very weak and soft metal, wheels have to be pressed off and on to move to replacement frame. Valve gear rods are pain to replace.  Parts are hard to find and expensive.

I would just wait to find a good complete Royal Blue Engine, that runs next time, rather than trying to save a basket case model.

Prewar 3/16 AF wheels for that loco are not available to my knowledge, so that probably makes the decision easier. Sell them on ebay, someone will pay well for the shell.

It is time to ask yourself a question. "How serious am I about the hobby?". If you plan to collect AF you may want to keep the parts. Who knows, you might just need a part down the road. I have parts that I've bought back to the sixties. A true hobbiest will always keep parts, "just in case". I've been there and done that. And I'm still buying parts, "just in case". Just a thought.

Thanks for the input guys! Like Pappy said, i'll keep them in case i ever need them someday. The Marx pieces that came with it however I will try to restore. They're in a good condition. Need to test the motor.