ORIGINAL: balongski
i have this cox engine lying around for some time now, i remember when i burnt the glow plug cylinder head assy with 12 volts car battery( I hooked it up not knowing how to fire it up I was so stupid ) 10 years ago untill i met my friend who's into rc, he told me how to fire a nitro engine, the engine has no tanks in the back like what i see on the web, it has a needle valve and a nipple located at the back plate ithink it uses an external or seperated tank the thing is can any body help me how to do the plumbing and the correct level of fuel tank how far it should be. it fires on morgan 15% heli fuel and i change the plug into number 8 OS i tapped the glow plug. because there are no parts available here in the philippines
The fuel tank centerline should be level with the intake on the rear of the engine or just a tiny bit below that. The fuel draw is not strong, so the fuel tank should be as close as possible to the engine, otherwise your mixture settings will be erratic. A one ounce fuel tank is lots, in fact more than you need most of the time. Normally a retapped glow head like yours will not perform as well as the Cox glowhead, but will still run, and at least you can get replacement glow plugs.