A prop washers a prop washers a prop washer .
The 56 is the ST 60 with a mm smaller piston dia. 51, 56 & 60 flown in same plane HERE : . ( hit user name for the others ).
If you dont want the magnum , give it to ME ! .
for a Merco 61 that needs a Ring or ABC ! .
the FSR ( Magnum 40 ) is a high timed OS FSR of Bob Hunt 78? World Chumps fame . Genisis . Many used em in that era .
Tank needs to be 1/8 High for even run.
4 or 5 inch pitch prop .
Got conned on one with a missaligned bored wrist pin hole , so the pistons twisted , so liner was twisted to not unmask cut outs .
( in other words it was sh*t )
The 45 ( and theres a 46 the same case ) Magnum , & Royal may be a bit more docile . a ton of power . The ASP is timed to high ( 160 Ex)
Dunno on the Thunder Tiger . Theyre ALL Clones of the OS 40 & 45 FSR . OS did a 40 FSR S ringed C/L Stunt F2B version . Differant Crank .
So theyre both good injuns if used appropriately . Fly 60 Ounces No trouble .