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  1. #1

    Join Date
    May 2005
    Houston, TX

    OS 120 Surpass Ver. 1 valve clearance

    I have an old OS Version 1 120 Surpass that I have started running finally the last three years. Ran great until a pushrod bent so now I am going to replace those and check the valve clearance. The manual says between .04 and .10 mm for valve clearance. Is better to be closer to .04 or .10?
    If it aint right, fix it. If you can\'t fix it, don\'t fly it.

  2. #2
    Join Date
    Apr 2002
    Champaign, IL

    RE: OS 120 Surpass Ver. 1 valve clearance

    Anything in that range is correct. The two feeler gauges in the tool kit OS has available are "go/no-go" sizes. One fits the other doesn't, and that's all that's needed.

    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007

  3. #3

    Join Date
    Jul 2002
    Brockton, MA
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    RE: OS 120 Surpass Ver. 1 valve clearance

    I have seen people take a folded-over piece of a cigarette wrapper and use that as a 'feeler guage'. I've done it myself, and had good results. I never did measure it though. But I believe that it would be within range.

    Just my $.02

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