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Submitted by: Anonymous

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End all your engine problems. Use Super Tigres. Excellant bang for the buck. The ringed engines start easy transition well and have more than enough power for its size, whatever that may be. If I buy any new engines ST always gets the nod. Oh and by the way they run for what seems to be an eternity.

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Submitted by: Matt

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Hi Dennis, I have a couple of Evo engines myself. I like'em! The low end needles is supposed to come set from the factory. Many people have discovered that they are not set correctly. Here is what to do. Remove the blue collar. Then close the barrel until it is 1mm open. Then close the low end needle all the way, then reopen 1 1/5 turns. See if that helps. A few guys at my club as well as I have found that the evo 46 runs a lot better with an O.S. #8 plug instead of the factory Super Plug. You may want to give O.S. #8 plug a go and see if that helps also. Are you doing the <a href="http://www.hooked-on-rc-airplanes.com/nitro-engine-tuning-tips.html#1">pinch test</a> to check the high end? You definitely need to do that. If you follow those steps and you should be good to go. Let us know how it turns out. Good Luck! Matt

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Submitted by: Dennis

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Thanks Mat, I'll try that. Yes I'm doing the pinch test and can get the high end set well but it seems to be a problem at the low end. I'll try your remedy and see how that goes. Thanks again. P.S. Before the engine was broke-in, it ran like a champ. After a few hours, this issue arrived.

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Submitted by: Eric

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I would also try taking off what I believe is called a prop drive or as some would say the thing that the prop gets pressed to on the back of the shaft. The one that comes with the engine is weighted and you might have trouble especially if you change to a two blade prop.

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Submitted by: Anonymous

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Hi Dennis, I have the same trouble with a .46 NT/NX. An O.S. #8 definately helped, but still loads up after idling a while (usually within the time it takes to taxi to/from the active runway). The low-speed needle seems super touchy. Me and about 4-5 different guys at the field fiddled with the low-speed needle for about an hour and a half before we got it running/transitioning comfortably enough to fly it. Seems like it's very difficult to adjust the low speed needle to the point you get a good transition without it loading up at low throttle settings. In order to keep it running, I stopped several times during taxiing and applied full throttle to get rid of all of the junk building up in the engine. I didn't fly with anything less than 1/2 throttle until I was ready to land. I'm running 10% omega and the engine is mounted horizontally. I'm stumped. I haven't yet tried a different carb on it to see if that helps.

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