Rooting around in my 1/2A and smaller drawer a couple of days ago, I pulled out an .010 that was buried under various .049's and junk, all gummed up and dusty, wouldn't turn over. Tsk tsk. After chewing myself out for being such a slob with such a precious little engine, I proceeded to tear it down completely. All metal parts started with an overnight soak in lacquer thinners. Brushing and wiping removed all the gummy oil residue. The plastic parts were swished out in a small jar of methanol. Everything blown out and wiped clean. Oiled it up, reassembled, new piece of silicone over the needle valve, and a new fuel line from some nice small diameter silicone I bought from Texas Timers (for FF pinch offs).
Moment of truth this morning.. wife's awake, time to fire it up in the basement.
Oh yeah.. ^%$%$.. remembered my glow panel burned out late last year and all I have is a single cell NiCad starter. 1.2V don't work worth beans on Cox plugs. Hmm.. what to do.
Aha! Great idea! (uh oh) I made up a clip to attach to my Hitec charger (120V input) and set it to NiCad charge, set to 2 amps..''start''.. cool, working, not hot enough. Ramp it up to 2.5A, looking good! Nice red/orange, not too much.
The macho way to test run an .010 is to hold it between thumb and forefinger of course. 5 turns out. Fueled it up with some 1/2A brew (25% nitro, 23% oil), a small suck on the intake to draw it up the line to the venturi, a tiny drop in the exhaust, flip it a couple of times to limber up. Power on the plug.. brpp.. brrp.. yeehah! I was pleased/surprised with a 3 flip start.
Whee, ran fat and rich with plug heat for a while, then nudged it into a rich 2 cycle (boy the exhaust glow is bright..?), clip off, ran out the tank. Wiped my left hand clean, let's do it again! Hmm, the plug is dead? Then it dawned on me.. the possible folly of connecting the plug to a current versus voltage regulated source. At least that's what I think took the plug out - as the element heated (which should result in increased resistance and less current flow) the charger faithfully kept the current at 2.5A. Oh well. I have a respectable collection of new plugs, thanks to scoring a handful at a swap meet some years ago.
It was just so satisfying to see and hear it spring back to life, and especially to know I hadn't ruined the poor thing with neglect. Phew! No more battery charger starts though.