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Magnum Engines XL 70 RFS Blue R/C 4-Stroke EngineProduct Review (submitted on August 30, 2012):
Well, I have two .70's, one for my Great Planes 56" Mustang and one for my VQ Yak 52. These pull both exceptionally, and I'm ofen asked if I have a .91 in the Mustang! Ha, go figure, and the reply I get is always a surprise that its only a lil ole 70, very good on fuel might I add.
One comment was about the idle, which I too had problems, which were all mine as all I had to do was lean the idle mixture quite a bit from the factory setting and voila, perfect start and idle, litterally every single time.
Bravo Hobby People! Love all the Magnums, especially this one!!