Improvement?
Try to enclose the thing in a plastic box with a removable lid (you have to make a cutout in the cylinder area, to allow cooling/occasional lubing). You may need to mount the assembly on an aluminium strip/plate 2mm thick first, which can in turn be bolted to the box with 4 mm bolts.
The funda behind the box - easier to stow away without fear of something getting into the motor/damaging the gear/getting oil from the crank assembly onto other stuff/avoids stressing the solder joints on the wires. Makes it usable in the rain too, without having to worry about the rain getting into the motor.
Provided you choose the box well, it will hardly take up much more space than the naked motor+cylinder assembly - certainly a lot less than the bulky case these things come in originally.
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