Hello Skip, I like your 1/2A Pinto; the side mounting is very clever. I'm surprised your model
weighs only 10.75 ozs. I'm not sure of your final fuel tank capacity, but it will probably only
add an additional .5ozs. I've got an older RSM Pinto kit, and I intend to power it with a
PAW .5cc diesel engine. My projected ready to fly weight, sans fuel, should be right at 7.0 ozs.
If I'm lucky I might get the weight down to 6.5-6.75 ozs. Unlike you, I intend to use the 1/32"
sheet for planking. Don't be afraid of 1/32" sheet wood. I have built many Fast Combat ships
with 1/16" planking for wing leading and trailing edges. I'll use Jap Tissue for covering and use
appropriate grained 3/32" sheet balsa for empennage and flaps. With diesel power, I can use a
significantly smaller fuel tank than a glow engine requires. I have considerable experience with
small diesel engines in Pinto sized models. My modified Ringmaster Jr's have stock airfoils, tail
moments, but have shortened nose moments to accommodate smaller tank dimensions and much
lighter airframes. The PAW 0.80cc engines get approx. 7 minutes airtime on 2/3 oz capacity tanks.
Their ready to fly weight is 7.2 oz's sans fuel. These Ring Jr's turn very sharp and can stay overhead
on 44'X .008" lines.
I hope to start construction in about a month(construction area is in disarray due to building updates).

Tony
