You have a few options on the QL to drive aux equipment:
- If you go down the Kohler AQS path, you can use a drive cup pulley. My 1450 has this (some don't though). The coupling between the crankshaft and the front rag joint MAY have a pulley casting into it. They do pop up on ebay from time to time as well
- The front crank connection using a lovejoy has already been mentioned
- The rear output of the hydro unit can also be used (little stubby shaft). You could run an extension out to the rear of the tractor and use it to power something as well (or even put the compressor under the seat and relocate the battery). That is what the SGTs did to run rear PTOs.
Do you need lots of power? The charging system on the AQS is 10-15 amps IIRC, so if you are going to run a radio/bunch of lights/chimes/etc, you may be looking at adapting an automotive alternator using one of these three locations, and a compressor off the other. A one-wire alternator for a GM is probably the simplest setup one can do, and there are a pile of different pulley options available.
For a compressor, a York compressor (used on old volvos, some older fords, etc) works great as a compressor (~ 10 CFM & 100 psi, depending on the specs), and has an integrated electric clutch, so you can turn it on & off, or wire it to a pressure solenoid to turn off the compressor when at pressure (give you more engine power/less fuel burned). I ran one of these to power a semi air horn, air tools, and inflate tires on a couple different vehicles.
You can do U-joints as well. I am putting together a 1450 using u-joints (idea based on Dave Kemp's writeup). Search his name, cub cadet, and u-joints on google and it will pop up. I used a different series/brand joint setup, as his is now price prohibitive (had a few eccentricities with my joints, but figured it out).
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