Thanks redhillwings, I’ll have a look.

Weight is under a ton as it is but with accessories and a prop, etc, I believe the weight is around 2,500lbs.

Yes, indeed, how do things fly with this weight up front. They come a lot heavier than this one; the R-3350 is around 1.5t before anything is attached and complete power plant engine change units, or power eggs, can come in at 2.5 to 3.0t with the mounts, radiators, coolers, hoses, prop, cowls and everything else that it needs.

The R-4360 Wasp Major was even bigger.

Of course, the paradox is that the aircraft will not leave the ground without this weight to both power it and balance the airframe.

Fascinating stuff.

Anon.