Next, you can pull the fuel line going into the carb and pull the fuel line going into the muffler. First, turn the car upside down and open the fuel door to drain all of the fuel from the tank (drain it into a place where you can safely recover it in compliance with all local laws).

It isn't uncommon to lose 1 or 2 during break in.ĥ. Even though the engines are different, the fundamentals are the same and Traxxas has great instructions.Ĥ. Go on the Traxxas website and watch their tuning videos. Clockwise turns leans the mix and counter clockwise turns richen the mix.

A 1/16 to 1/8 turn on a needle is all it takes to make a tuning change. NOTE: these engines are extremely sensitive to tweaks on the needles. I would set the screws to where the factory tells you to in the manual and tune from there. I will often bump up the trim when I am starting a car until it warms up at which point I set it back to 0 trim.ģ. No, you didn't mess up the idle speed with the throttle controller trim. ST D/R is steering dual rate you can control how far the steering servo will travel from side to side. I prefer to use the big square 1.5v hobby batteries so I don't have to worry about the glow warmer battery dying.Ģ.

I will leave the glow plug warmer plugged into the glow plug for ~45 seconds to 1 minute while it is warming up. The factory sets a default tune on all of its engine carburetor needles this doesn't mean that the tune is right for your area or that the assembler set the needles correctly.ġ. Be prepared for a little more frustration as you travel up the learning curve, but also understand that it is very rewarding when you figure it out.

Based upon the size and design of the very small nitro engines, they are very sensitive to tuning. Thanks guys, really excited to get the buggy running and broken in.įirst off, welcome! Second, nitro RC has an unavoidable learning curve that can be frustrating. Other than running it dry, how does one manage to drain all of the fuel out of the system when you're done (such as when you can't get it started)? Would a new plug be advisable even though I know the one I have works?ĥ. Would you recommend tweeking the high speed mixture needle? Or maybe the throttle stop screw? There's smoke blowing out of the stinger when it's running and again, we've only run 2 tanks of gas through the engine so far.Ĥ. Thankfully, a Youtube video helped me resolve that problem.ģ. I can tell you my servos were reversed out of the box. I understand what 'ST Trim' and 'TH Trim' mean, but I have no idea what the smaller'ST D/R' dial does. How long should we be leaving the glow plug igniter connected after the motor fires?Ģ.Is it possible we screwed up the idol speed by twisting the throttle trim dial on the radio controller? Unfortunately, there were no instructions for the Hobao HT-2 controller in the box. Any thoughts or suggestions?Ī couple of questions I have for starters:ġ. Same deal afterwards - couldn't manage tore-start the sucker. Today, the buggy fired upon like the second pull cold and ran for maybe 15-seconds before stalling when I gently nudged the trigger. I've read a few postings about flooding the engine, but I'm not sure this is the problem as I'm not witnessing significant fuel in the head when I pull on the starter handle with the glow plug removed (not hard to pull the handle, either, with or without the glow plug installed). We did manage to run one tank through it yesterday afternoon but then couldn't get it re-started after the 5-minute cool down. Oftentimes, all it takes to stall the motor is a very subtle twitch on the throttle trigger. Specifically, the machine frequently stalls out after we get it started, and then we have a difficult time getting the engine re-started. I recently helped my 11-year-old son purchasea new RTROFNA Hyper 7 Black buggy, and we're having some problems with the break in. Weight.Hi folks, I'm brand new to Nitro-powered RC buggies.

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