I have 2 LA 46s...both set up exactly the same: 272 venturi, ST needle, 1 head shim, metal backplate(FP40), Thunder bolt RC long plug, old FP 40 muffler, no re-works to p/l or crank, XOAR 11-4 prop.
The one is in an ARC Cardinal and does the pattern on 3-3/4 oz of 5% 11/11 GMA fuel with several (10) laps to spare, tank is 4 oz Brodak ATF, launch at 10,100-10,300, wet 2 with a little break, 63 ft eye to eye lines, 5.2 laps....flies wonderfully.
The other is going in an ARF Nobler which has a 4 oz Brodak ATF tank already installed...exact same tank as in the Cardinal.
Here is my question: what are the chances the one in the Nobler will have the same mileage?
Had a (later run)Brodak 40 with 280 (down form the 300 that came in it) venturi and could not get past the vert 8s. Thought what the hell...if my card does pattern on 3-3/4 ozs I'll just put the other in the Nobler and stop worrying about losing the model to fuel shortage. I liked the way the brodak did the old 4-2 but just can't get the mileage and the Brodak seems a little low on power. was having to use 59' lines. This is NOT a Brodak 40 bash as it is a sweet motor but just can't get the mileage down. It is WELL broken in...lots of flights and proper up front break in procedures were followed. the mileage did improve with age but has now leveled off.
Anyway...can i expect the same(close) mileage out of both LA46s? Please don't suggest putting a bigger tank in the Nobler. the 4 oz ATF fits perfectly and I DON'T like plastic tanks....another subject...