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  1. #1

    Join Date
    Sep 2006
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    OS MAX H80 /R.C. 1971 W BISSON LOW NOISE MUFF

    OS MAX H80 /R.C. 1971, with Bisson low noise muffler. With MAS S2 Scimitar 13x6 propeller 10000 rpm.
    This was with about 500 rpm rich setting. The engine was definitely not fully broken in as it has two rings
    and was near the end of a third tank of fuel when it was measured. The two plugs were OS#7 and the fuel
    was 5% nitro, 25% oil made by mixing 2 oz of castor oil with 30 oz of 5/20 Byron fuel.

  2. #2
    Broken Wings's Avatar
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    Jan 2003
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    RE: OS MAX H80 /R.C. 1971 W BISSON LOW NOISE MUFF

    They're neat engines, I've got a couple of them. Your engine probably has a needle bearing in the big end of the connecting rod. Just for kicks I mounted a Rev-Up series 2 Special Pro 16x41/2 and i could read the letters on the prop at idle...
    Club Saito member #715
    Club Jett member #12


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