Thought I would add another possible solution to the thread. Back when I raced rc cars, a few of us used Weller TC201 or TC202 soldering pencils without their transformers with good results. They are fed with about 20 volts from their power supply, but seemed to work well with 12.5 volts at the track. We would cut the plug off the irons and solder alligator clips to the wires. They did heat up a bit slower, but worked fine. Lately they have been showing up on ebay, new or nearly new, without the power supply, just the iron , making them a bit more affordable than they were back then.
Here is a link to search ebay for them. Check once or twice a week and you'll come up with a deal you can brag about :-) http://search.ebay.com/weller_Business-Industrial_W0QQcombineZyQQfromZR9QQsacategoryZ12576QQsocolumnlayoutZ3QQsorecordsperpageZ100QQsosortpropertyZ1 Here is a link to a brand new soldering pencil only: http://cgi.ebay.com/ws/eBayISAPI.dll?viewItem&category=73154&item=3860778071&rd=1 Bill Heishman RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.