ORIGINAL: Countryboy
ORIGINAL: EASYTIGER
See that bullet shaped thing on the front of autostart engines? That takes a shotgun cartridge minus the buckshot. You whack on the front of the housing with a hammer, the firing pin sets off the starter cartridge, and the blast from the cartridge spins up the engine. That's how we do it in Brooklyn, those dopes down in Kentucky want to hand-crank, it's no sweat offa MY back.
Way too go ET.... lead your fellow New Yorker astray!!! Shotgun shell you say, well here's a thought.... don't hold your farts in, they will travel up your spine where they reach the brain, and that is where shi*ty ideas come from. Although my reply too the inquiring mind of Philng was perhaps in poor taste, it was all in good fun... sorry Philng. The only thing is ET, unlike your shotgun shell method, my recommendation does hold a wee bit of validity.
1. Commence vigorous hand cranking, 2 operators.
2. At IGNITE speed, tachometer indicating 450 to 550 rpm and fuel pressure gage reading 550 lb/sq. in. minimum, open fuel control valve to on position.
3. Continue vigorous cranking to STOP CRANKING speed, 1200 to 1300 rpm indicated on tachometer, from which point the engine will accelerate normally to rated speed.
With engine stabilized at rated speed, oil pressure should be 20 lb/sq. in. minimum and exhaust temperature normal operating range is 600 to 950 deg. F, (315 - 510 deg. C).
Normal running speed is 4430 rpm, speed must not be allowed to fall below 3600 rpm and avoid running at speeds in excess of 4500 rpm.
Shut down sequence to stop engine, allow 2 to 3 minutes running at no load in order that engine may cool down, turn engine fuel control valve to off position.
Note that all tachometer speeds quoted are output shaft speeds, the turbine is actually turning at over 40,000 rpm. The spiral bevel gear in the gearbox is rotated at 9.1 to 1 by the bevel pinion mounted on the end of the turbine rotor shaft. A reversal of this speed reduction by hand cranking, together with the speed increase in the chain and sprocket linkage, allows the operator to crank the engine with an approx. 70 to 1 speed increase. The magneto operates continuously to fire the spark plug whilst cranking and stops when hand cranking is discontinued, the sprag clutch disconnects when the turbine speed exceeds the cranking speed.