Neither of them worked- when batteries were put in, one just ran and ran, but drive cog for cartridge did not spin inside, and zoom didn't work. The other camera was just dead.
There are always about 6 of these on Ebay for $1 plus shipping it seems- and a few sellers said when they put batteries in, the camera runs and runs by itself, but no zoom, won't advance film.
In the archives here, I found this post as well:
super8fireman wrote:I've also had 5 Kodak xl10, xl 33, xl55 cameras that had given me grief. They all had the same problem. When batteries are installed and first run,as soon as you release the bar, everything would stop and it sounded like the motor would keep running but nothing was moving. It would do this until a battery was removed. They never worked again.
I decided to "sacrifice" both of my XL-55's, take them apart, and find out what's wrong. Here's the deal, to anyone interested in using/buying the Kodak XL-55:
There is a small DC motor that drives both the shutter and zoom lens, by turning gears that mesh together. Thh main motor drive gear is plastic- as is most of the other gears. The main drive gear in both cameras, was SHEARED OFF from age/use. All the teeth were broken off it- this drive gear presses onto the motor drive shaft itself. The camera has to be totally disassembled, to change it.
So in effect, what happens is, the motor sits there spinning, but the shutter and zoom is not engaged, neither is the film cartridge drive cog. This is a real shame, because if they put a steel or aluminum drive gear in, these cameras would both work now.
If you happen to get one of these cameras and it works, I highly recommend NOT using the zoom function. The zoom lens puts a lot of strain on this small drive gear, and if it sticks, all the drive gear teeth simply shear/break off. These gears are so fragile and dried out from age, they break easier than an eggshell. Use the manual zoom, and save the drive gear for shutter/cartridge cog drive. Fortunately, I did not pay much for these cameras.