Can the worm gear be driven by the crown tooth gear or will I have to use one of the regular gears to drive a worm gear? Or is the worm gear used to drive a regular gear? How is the worm gear bracket used in an application? I guess I am going to find out this weekend one way or another, but I don’t want to break anything by using it improperly.
In order to make the worm gear turn, you have to turn the axle it’s on. You can NOT have a gear meshed directly with the worm gear, and make the worm gear turn by turning the other gear.
I don’t think a crown gear will mesh with a worm gear.
The bracket in the gear set is not for the worm gear but for the rack. You can combine several racks (they click together with a pin) and put a 1x beam underneath for strength… This assembly will then slide through the brackets.
The worm gear can be driven by any gear that is on the same axle. The worm gear can then drive any straight gear (not the crown gear), but that gear cannot in turn drive the worm gear.
Steve, that clears up something that I was wondering about the worm gear, whether it could be used as a driven gear. So the crown gear can only interact with a straight gear you’re using so that the power can be transferred on a 90 degree angle. Shucks, that shoots down that idea about driving a shaft with a worm gear. I guess that I’ll have to build a differential… no, that won’t work either, cause the transfer will be different directions when I interface the crown (driving) gear with two straight (driven) gears. I think that there would have to be two crown (one driving and one driven) and two straight (one driven plus transfer and one just driven… Hmmmm.
Jetro, that bracket that I was referring to was called the worm gear bracket, not the rack gear. (The black foundation piece, six in all that come in the kit.) I think that I’m understanding a little bit more about the kits themselves.
Yes, the 2x2 Corner Connectors that have a pair of snaps on each end are the Worm Bracket. They are used to make interfacing the 12 Tooth and 36 Spur Gears to the Worm Gear easy. Here’s are two photos showing these parts used to make a compact worm gearbox:
WooHoo!! Thank you, Art!! That clears up my question completely! Now if I can find a shaft long enough to extend both ways through the straight gear and interact with the rack gears on both sides of my scissors lift with maybe twelve tooth gears running back and forth on the racks. 
Now with two motors driving the chassis, one driving the scissors lift and two motors running the sweepers I think that I’m just that much closer to my goal. Awesome pics, Art! I can’t say thank you enough… 