RC car electric start simple circuit

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SUMMARY

The discussion focuses on building a simple electric starting circuit for an RC car powered by a Nitro Methane motor. The circuit utilizes a rechargeable 4.8V, 600mAh NiCd battery connected to a servo-operated micro switch. The circuit branches into two paths: one unregulated for the starting motor and another for the ignitor, which requires a resistor to limit voltage to 1.3V. The user seeks guidance on the appropriate resistor sizes and whether a second resistor is necessary on the cathode side of the ignitor.

PREREQUISITES
  • Basic electronics theory, including Ohm's Law
  • Understanding of RC car components, specifically Nitro Methane motors
  • Knowledge of NiCd battery specifications and characteristics
  • Experience with circuit design and troubleshooting techniques
NEXT STEPS
  • Research resistor calculations for voltage regulation in circuits
  • Learn about the specifications and limitations of glow plugs in RC vehicles
  • Investigate the use of micro switches in electronic circuits
  • Explore circuit simulation tools to test designs before physical implementation
USEFUL FOR

Electronics enthusiasts, hobbyists building RC vehicles, and anyone interested in designing electric starting systems for small engines.

sailinghickey
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I'm a communications electrician in the Navy. I went through some electronics theory about eight years ago. Now, I'm trying to build a simple circuit for an on-board electric starting system. The vehicle runs on a small Nitro Methane motor and uses a glow plug for the ignition. I'm using a rechargable 4.8v, 600mAh NiCd connected to a servo operated micro switch. From there, the circuit branches into parallell. One branch is unregulated to power the starting motor. the other branch powers the ignitor. The ignitor can only handle 1.3v.

1) What size resistor or resistors do I need to use in this system? I know one has to go before the annode of the ignitor.

2) Do I need to have a second resistor going into the cathode side as well?
 
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Do you guys need more info or pictures? I noticed over 80 people have looked at this. Yet, no one has posted a reply. I've been trying to build the circuit through trial and error. No luck yet though.
 
You need to post circuits, pictures and current and voltage measurements as well as a full description of what you are trying to do.

You have some electronics experience, so you should be able to gather much of this information.

Then it would help if you could say what you have already tried.
 

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