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Engine basics => Engine set up tips => Topic started by: dave siegler on April 26, 2009, 08:30:33 AM
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I just got a card (12) of fox long RC plugs from a hobby shop that is going out of business. They had an old price on it and were 30% off. (about $1.25 ea)
The thing I did not notice is the little sticker on it that said you need an extra resistor to limit the current to 6A. It states the R is .15ohm . A 1.5 batt will pull 10A.! Is this a standard fox screwup?
I think my globee will work because us goes down to .2ohms, but do power panels work on a current limit of voltage limit?
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I wouldn't worry about using a Fox plug with a 1.5 volt battery, or espically one of the little NiCad headlocks that are only 1.2.
I use Fox plugs with a power panel and they last a long time. I have an old panel with no rheostat but some sort of internal limiter that glows the plug without burning it down.
If yours has a dial, just hook up a plug and dial it up 'til the color looks good. Leave the EE stuff to professionals.
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Power panels work by pulsing the 12V on and off which is why you can hear them buzzing. I never go by the green and red scale because different brands of plugs can have a huge difference in the correct setting for a decent glow. With a new plug I always turn the knob right down before connecting it then slowly wind it up until I have the glow I want and then check the setting on the scale. OS plugs always seem to need to be way up in the red while others just barely get into the green.
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I have used fox plugs for a long time but I have never seen toies that had a little sticker on each one that said warining you must use an external resistor.
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I remember seeing a Caution from Fox, either in an ad or on a plug card, saying if you used a 2 volt wet cell you needed an external resistor to drop the voltage if you were using the 1.5 volt plugs. Fox was at that time making 2 volt and 1.5 volt plugs. Do they still make 2 volt plugs?
Herman