Robert, I tried the ventilator and it worked ok. I have the Leslie simulator pedal made by Lealie. I bought this one because it has a speaker selector where you can select several Leslie speakers. It is a little more expensive but I think it’s worth it. If you would like to hear how it sounds. Go to you tube and check out Monsters of Melodica “Mr Pc” I use it with a Hammond 44. You can go to Monstwrs of Melodica on Face book and you can find it there as well. I love the effect. You can also try the B9 pedal by Electro Harmonics works with the Hammond 44 with some tweaking if you want the Hammond sound.
Monsters of Melodica