Traxxas TRX 2.5R, Руководство пользователя

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TRX 2.5R • 26
TUNING THE TRX 2.5R
Tuning the Engine by Temperature
The following procedures require an optional infrared temperature probe or on-board temperature
gauge (Traxxas on-board digital temperature gauge, part #4091). Engine temperature can be used
as an effective tuning aid when you understand the relationship between engine temperature and
ambient temperature. The engine operating temperature, when tuned for maximum performance,
will vary according to atmospheric conditions. The atmospheric condition that has the most
influence on engine temperature is air temperature. Expect the engine temperature to vary almost
in direct proportion to air temperature. Assuming you tuned the engine for the same maximum
performance each day, the engine will run about twenty degrees hotter when it’s ninety degrees
outside than it would in seventy-degree weather. For this reason, we cannot give you a definitive
temperature range that indicates the best possible engine tuning.
The temperature gauge can aid you in tuning by giving you a relative indication of how your
adjustments are affecting the engine and by preventing you from exceeding maximum engine
temperature. For example, as you lean the fuel mixture, the engine performance will increase along
with the temperature. If you continue to lean the fuel mixture and the temperature increases but
the engine performance does not change, then you have exceeded the maximum safe lean
setting. Even if it’s 100°F outside, you should be able to tune for maximum performance. Try to
keep your engine from exceeding 270°F when measured at the glow plug. If tuning for maximum
performance results in engine temperature exceeding 270°F, try to increase airflow to the engine
by cutting out the rear of the body, windshield, and front valance. If the engine temperature still
cannot be kept below 270°F, richen the high-speed needle slightly.