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Engine basics => Engine set up tips => Topic started by: frank mccune on July 18, 2019, 05:06:02 PM

Title: Heat differences between chip mufflers and expansion type of mufflers?
Post by: frank mccune on July 18, 2019, 05:06:02 PM

    Has anybody ever done a test to determine if and how much of a difference in heat each of these mufflers produce while running? Results?

                                                                Tia,

                                                               Frank     

Title: Re: Heat differences between chip mufflers and expansion type of mufflers?
Post by: Brett Buck on July 18, 2019, 10:38:29 PM

Quote from: frank mccune on July 18, 2019, 05:06:02 PM

    Has anybody ever done a test to determine if and how much of a difference in heat each of these mufflers produce while running? Results?

    It's highly variable between specific mufflers, so, it's more-or-less impossible to answer in general. In any case, you choose the muffler or settings that make the airplane fly the best/engine run the best, regardless of the temperature. If it melts or seizes, then it won't fly the airplane very well; Otherwise, its OK.

   You can make tongue mufflers either more or less restrictive or retain more or less heat by blocking some of the holes. This was a very common technique back before mufflers became obsolete.

     Brett