Curious minds question : some say that an old style dry blower using the (squirrel cage blower) like the picture bellow isn't effective and prefer a gas blower type, due to added hot air which helps dry off the dirt (if it have some moisture in it). Where I go , there is no rain whatsoever ...
Keene Engineering Dry Washer, Modifications 04: spacer inserts
https://www.youtube.com/watch?v=hAUGH_5bHP0
The drive wheels tend to wander, and when they wander "inward" towards the device they jamb. I've added spacers to prevent that.
Previous videos...