RCU Forums - TT 91fs idle

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High Planes Drifter

04-28-2003 08:51 PM

TT 91fs idle

Ran my TT91 for the first time this weekend. Started and ran no problems. Used Powermaster 30% heli fuel and a 14/6 APC prop. After three 12 oz tanks I tried to get it to idle but the lowest I could get it was about 3100 rpm without the glow driver on it. I was just wondering how low can I expect to get it to idle. :confused:

Thanks,
Neil

bdtsr

04-29-2003 12:03 AM

TT 91fs idle

You might want to post this in the engine discusion forum.

Sport_Pilot

04-30-2003 03:37 PM

TT 91fs idle

First run 2 to 3 more tanks of fuel. Use a Fox Miricle or OS F plug and at least 10% nitro. Ignore the lumpy idle, it should idle at 2,800 even less with more run time. Use the pinch test to be sure that the mixture is set right. It should speed up a bit a second or so after pinching the fuel line.

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