R/C Tech Forums - View Single Post - Reading piston and combustion chamber

04-29-2010 | 08:38 AM

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From: 我的名字是沈先生。我是中国人, 居住美国

Quote:

Originally Posted by fulcrum2

Hi there,

I am trying to learn how to "read" the parts of my engine after a run. It´s a Nova Flash after two days racing at Lostallo. This particular track has an extremely long straight (7 sec full throttle). Question to the experts: If you look at the pictures, is there something I have to take care of before I run the engine next time on this track? The parts look a little bit different compared to when I checked them last time. Are those tiny spots signs of pre-detonation? I think the engine was not too lean, because I could hardly make 5mins. My friend told me to use a 8 plug instead of a 7, or put a 0,1mm shim more under the head.
Looking forward to hearing your thoughts!

Later, Stefan

We ran at Lostallo last year during the 1/8 worlds and we shimmed our engines to 0.90mm using ORION fuel (spec fuel during the worlds) engine ran perfect, no detonation whatsoever, using Ninja # 7 plug, it will only make a little more than 4 minutes per fuel tank, no body makes 5 minutes only Collari does, by the way Lostallo track is NICE !

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