Cox heads are 1.5 volt rated and the 1.2 works just fine. Many people do hook a couple of small cells in series in an attempt to acheve easier starting and this is a mistake beyond the already mentioned fact that your plugs will not last very long.

The most common control we have of our glow engines ignition timing is the glow heat. A hotter plug will advance the ignition timing and a cold one will retart the ignition. Since easier starting is by retarding the timing and an advanced timing will cause starting problems. When you up the voltage in a Cox head you increase starting difficulty.

The best ignitor if you don,t have the Cox or one of the aftermarket clips is just a couple of 'C' or 'D' cells Nicd or alkaline with a short wire of at least 22AWG soldered directly to the cells in parallel and a couple of aligator clips for hookup.

Works just fine, as a matter of fact controlline team racers use a hot glove for pitstops. The pitman has a couple of cells taped to his arm and a glove with contacts attached to the index finger and his thumb. He just wraps his finger under the crankcase and his thumb on top of the plug . A single squirt with a bottle and a quick flip results in refuel and relaunch in seconds.


John