I guess you guy's know by now i spend a fair bit of time on you-tube . Now you may well remember a little while ago i came across a spitfire with a kolm triple pot motor , that sounded like a dragster on a fly past . Well have a listen to these two , their sporting moka's motor's . The sea fury is rotating a 5 blade prop on a moka 250cc , and to my ear's is the best sounding of the two . The second is a moka 400cc using a three blade , and sound's more like it would be more at home on a dc3 dakota , than the corsair it is planted in . either way enjoy eh .