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  1. T

    Gas engine backfire

    Yup if it is a Syssa, its probably a sheared key. I believe they had an update fix for that problem. Send it in, you should have it back in 6 months or so. And yes, that last sentence was a snarky jab at Syssa!
  2. T

    dle 30 or eme 35

    Remembering back when my DLE 30s were new, I tried the first one with the stock muffler and really didn't like the way it ran. Frankly it sounded like crap and had a horrible mid range burble. A week later I brought the same plane out with a shiny new Pitts wrap around muffler on it and what a...
  3. T

    dle 30 or eme 35

    I own (2) DLE 30, one mounted in a 1/4 CUB and the other in a YAK55. Both have been absolutely great engines and IIRC, one is 5 years old, the other 4. They've never been babied in any way and they never fail to satisfy my requirements for reliable power. Sorry, no experience with the EME...
  4. T

    DLE 85

    I have a new DLE85 mounted and ready to go when the weather changes. Compression was excellent right out of the box so I have no plan to change the ring until and if I see a need for it. On the other hand, the carb was clearly defective and would have leaked fuel through the needle valve as...
  5. T

    dle 30 or eme 35

    I own two DLE 30s. One is 4 seasons old, the other 5. Other than a timing and plug issue on the younger engine when it was new, both have run flawlessly. I would be hard pressed to say anything bad about these engines. I wouldn't hesitate to buy another or the EME 35. Frankly, I'm thankful we...
  6. T

    Desert Aircraft vibes

    I think it is the whole package that makes for the increased vibration. Rotational and reciprocating weights not quite balanced out by the crankshaft combined with more efficient cylinder charge filling and an advanced timing plus a higher compression ratio all contribute to the problem. I've...
  7. T

    Desert Aircraft vibes

    thurmma, I think you are pretty much on tract with your line of thinking, especially the compression ratio thing. DA doesn't list the compression ratio of their engines, at least I have not seen it in print. But my bet is their newer engines are higher performance engines than previous models...
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