I have recently acquired a plane (Carl Goldberg Super Chipmunk) with an on-board glow driver system in it. The system includes an external on\off switch, a throttle servo actuated switch, and an external charging port. The component in question here is this port. It is a small, silver, round port, about 1/8" deep. It has threads on it as if the charger can attach to it securely. I am trying to find a charger that will adapt to this type of port. If anyone has an idea as to what type of system this is, please chime in. I will attempt to get pics of it ASAP. Thanks.

Why don't you just replace them? Radio Shack has some nice coaxial plugs and connectors. Mount in a 7/16" hole.

http://www.radioshack.com/product.as...Fid=274%2D1576
http://www.radioshack.com/product.as...Fid=274%2D1568

John

Here is a pic of the installed jack.

Looks like it might be an 1/8" phone jack. I don't belive the threads attach to the plug. Can you show a photo of the inside or the jack itself??

The jack is not as deep as a phone jack connector, it is maybe 1/4" deep, if that. will try to get a pic of the back of the connector this afternoon.

Like this. http://www.radioshack.com/product.as...5Fid=274%2D286

John

Primodus,
Boy your're fast. Answered before I got the photo up. You can also search Allied Electronics or Newark Electronic on line catalogs.

www.newark.com
www.alliedelec.com

John

Here are two shots of the inside setup. they show the whole rig wiring setup. the charge jack is positioned top left corner.

Primodus,
Even with the pictures I cannot make out what type the jack is. Sorry. An 1/8" jack and plug would work however.
John

On board glow plug heater? Maybe this is the charger plug for the battery?

yes this is the charger port for the battery.

I tested a 1/8" audio phone plug in the jack and it was a perfect fit. Now I have a new issue. I know that there are different types of 1/8" audio plug styles. Which one will give the proper internal polarity connections. I noticed the negative wire is not connected to the jack lead, but to the jack housing itself.

2 Styles of 1/8" plugs are common - stereo (3 terminal) and mono (2 terminal). It is common for the ground to be connected to the housing for audio and does no harm as a negative for a battery system. If you get a stereo plug it will also substitute for a mono plug in a stereo jack. Plug it in and read the voltage off the plug terminals to get polarity for your charger.

John