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Needle setting for TRX2.5 Rustler
- Thread starter toscano1
- Start date
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Mayhem
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High Speed
A good starting point for the TRX 2.5 hi-speed needle is 4 turns out from closed. This is preset at the factory, and is a good default setting in case you lose track of the engine's current mixture setting.
Low Speed
Notice the thin darker gray area between the low speed needle and the throttle arm. This is actually the other end of the slide valve from inside the carburetor. The low-speed needle is threaded into the slide valve and is set flush (even) with the edge of the slide valve. Note: This is a good base setting. Adjustments may need to be made to the low-speed needle for best performance in your running conditions.
Info from traxxas.
A good starting point for the TRX 2.5 hi-speed needle is 4 turns out from closed. This is preset at the factory, and is a good default setting in case you lose track of the engine's current mixture setting.
Low Speed
Notice the thin darker gray area between the low speed needle and the throttle arm. This is actually the other end of the slide valve from inside the carburetor. The low-speed needle is threaded into the slide valve and is set flush (even) with the edge of the slide valve. Note: This is a good base setting. Adjustments may need to be made to the low-speed needle for best performance in your running conditions.
Info from traxxas.
Last edited:
Nitro_Freak
RCTalk Addict
mayhem got it. just be sure to know, that the 2.5 requires very small adjustments to both needles compared to most other engines. on my 24.7 i can trn the needle 1/4 and not feel much diff, but on my 2.5 i turn it 1/8 and notice a huge diff in performance.
