Evolution 45 Power System
 

Wild Cat 5/20 fuel:

APC 11 x 6: 12500 rpm
APC 12.25 x 3.75: 11500 rpm
MA Kseries 12 x 4: 12000 rpm

RE: Evolution 45 Power System
 

Wild Cat 5/20 fuel:

APC 12.25 x 3.75: 11500 rpm - 5.6 lb of static thrust (fish scale)

RE: Evolution 45 Power System
 

Wild Cat 5/20 fuel:

APC 13 x 4: 11000 rpm - 5.8 lbs of static thrust (fish scale)

RE: Evolution 45 Power System
 

Carefully with APC 13 x 4 on evolution 45 PS.
I think that this propeller is too much for this engine.
The increase of propeller load increase the heat in the combustion chamber.

RE: Evolution 45 Power System
 

Wild Cat 5/20 fuel:

Pro Zinger 12 x 4: 11100 rpm

RE: Evolution 45 Power System
 

This is an Evolution Trainer A 45
Fuel: Byron 15%Nitro 18%Synthetic/Castor mix
67 degree F 2570 ft altitude 18% RH
About 3/4 gallon of fuel thru it.
Mounted on Alpha 40.
MAS G/F 3 11X4 14400
MAS G/F 3 11X5 13450
MAS G/F 3 11X6 12150
MAS G/F 3 11X7 10650
MAS G/F 3 11X7.5 10300
MAS G/F 3 11X8 9900
APC Scimitar 12X6 9450

The engine was still not broken in after 1 gallon as had to remove restraints to lean out idle.

Earlier after about a quart
H9 3 blade 10.5X4 10000
MAS G/F 3 11X4 13500