"11x4 APC with 20% nitro."
What a hacker! This is so wrong on so many levels it ought to be against the law.
Everybody knows that when using an APC 11-4 on the 25LA the proper fuel is 63% nitro, 7% propylene oxide, 20% Klotz KL-100, balance methanol. I sincerely hope this settles the issue once and for all.
I continue to believe that a box-stock 25LA--including use of the stock muffler--run on pretty much any brand of 10%- to 15%-nitro fuel, is a pretty decent combination, especially for those new to CL Stunt, just coming back, and/or not wanting to spend much money.
But my prop of choice is the APC 9-4. Have yet to see anything better.
A friend has an Oriental with a 25LA fitted. I don't particularly care for this specific model, but that has more to do with personal taste than anything else, I suppose. He likes it just fine, and the motor has more than adequate power.
Dan