Hi, I did just that using a fan from a old factory fan heater (furnace blower in USA) mounted on a 3pt frame with suitable pulley belt ratio to get a decent speed (approx 3:1 increase on pto speed) fashioned a chute from scrap tin sheets. Worked okay. still have it in shed but now use a...
Have been browsing the Build it yourself pages for a few days now.
Notice there are very few from this side of the pond.
I have made a variety of add ons and stand alones for variuos machines over the last 40 years.
Starting with trailers , grader blades for small Gutbrod tractors
(8hp) ...