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Misbehaving 26cc Engine

Tony Phalen April 24, 2013 THE RC DOCTOR 95 Views

Question:
Hey there Doc,
When I’m out running my 26cc 5B Baja I’ve noticed that when the engine is hot and running near the top end (high revs) it seems to misfire alot. Any suggestions?

Thanks,
Jacque

Answer:
Hi Jacque.
While the larger, 2-stroke gas engines (like those in the Baja) aren’t as finicky with tuning as their 1/10th scale nitro counterparts, you occasionally need to tweak them to get keep them running optimally. It sounds like the top end is a bit lean and, when the engine nears it’s top-end revs, it’s searching for more fuel. Richen the top end up a bit (counterclockwise) and that should cure your problem. It’s best to do this in 1-hour increments so that you don’t over-tune yourself out.

Good luck!
The Doc

About Tony Phalen

Tony Phalen - As an avid RC enthusiast, Tony has been building, bashing and racing RC Cars for over 30 years. He has participated in every kind of surface racing events - 1/18 scale trucks, 1/10 scale TC, Rock Racers, Rally - if it had wheels, he's raced it! He's also worked on both sides of the industry fence; collaborating with many major manufacturers (as well as being a sponsored driver) to working for a high-profile industry magazine. During this time he has learned many tricks, tips and techniques and is sharing that knowledge on CompetitionX - the most informative RC website on the internet!