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Engine basics => Engine set up tips => Topic started by: phil myers on June 01, 2009, 02:55:12 PM
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Was wondering where I could find information about the older fox engines out of curiosity really, i'm particularly interested in the Fox .15 of the late 60s early 70s, ie the weight and power output compared to modern glow .15s. Realise there may have been more than one version around in that period. The sig Akromaster plans (circa 1973) recommend this engine.
I dont plan on using a .15 anyway,(using a modern .12) just want to know coz i'm nosey.
Thanks for any pointers....Phil ~>
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Peter Chinn "Latest Engine News",Model Aircraft (British) June 1962. discusses the Fox 15X and 15XX. These are later models which look sort of like a Stunt 35. The 15X on 20% nitro turned Tornado 8 x 4 at 11,600 RPM, The 15XX turned 12,800. I don't know about modern 15 glows, but Ron Warring, "Engine Analysis", Aeromodeller Jan. 1962 gives figures for the short-lived TD 15 of between 15,200 - 16,000 on 20% nitro. A TD 09, way overpropped, on 30% nitro, will turn an 8 x 4 at 13,200. A Medallion 09 is about the same as the two models Fox 15 with an 8 x 4.
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Jim, Thanks for that, just looking for the weight of them now..
Cheers Phil
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Here is a link to copies of the engine reviews by Peter Chinn for the British mag Aero Modeler. The Fox 15X review from 1962 lists the weight as 3.6 oz- that would be without a muffler. The 1959 review of the older Fox .15 ( 2 bolt rear cover) lists the weight at 4 oz.
http://www.the.elmores.btinternet.co.uk/engine_tests/_cat001.html
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Bill, Thanks for the link, I was hoping there was something like that out there! Now I've got hours of fun reading thro' those old reveiws. Brilliant.... Phil