Help Identifying Vintage 049's

Hello all. I recently came upon an old box of glow engines and parts that I hadn't rummaged through in years. Much to my delight I found a nice little RR1 with the original spinner in fair condition, but am having difficulty identifying some of the other parts, crankcases, etc.

I've searched considerably, both on this site and many of the Cox Engine sites mentioned in these posts, but to no avail. I'm hoping someone here can offer some assistance.

In the pic below are four different crankcases that I have. I'm pretty sure the two on the left are older vintage Baby Bee's, as each of them has only one oil groove for the crank. They use what I would call a "standard" crankshaft as viewed in the pic. I can't identify the two on the right, however. The two on the right use what seems to be an oversize and quite beefy crankshaft, and one of the crankshafts is tapered on the drive end, instead of having splines.

These motors were collected over years by my older brothers, and it's likely that many were product motors from Baja Bugs, Cox Helicopters, and a few others. I was also wondering if they were related to the Killer Bee's.

Essentially, I'm just trying to find out what I have here. I didn't know what I had with the RR1 until considerable investigating. I'll most likely be selling the stuff that is collectible, and for the stuff that's not collectible, well, someone somewhere probably needs the parts.

I'd really appreciate any info or input you guys could offer. Thanks a lot.




My RR1. Not the prettiest example, but I've seen worse!

Nice early maybe 1957 RR1.
Thick crankcase is a car one.