Good Morning, Oppo

"ttyymmnn" (ttyymmnn) 03/02/2020 at 09:15 • Filed to: good morning oppo

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Let’s get this week started.

CB > ttyymmnn 03/02/2020 at 09:19

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Which, funny enough, is my last day of work before my weekend.

WilliamsSW > ttyymmnn 03/02/2020 at 10:08

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It's a lot warmer than that here, yet my motor still won't start today. 

Only Vespas... > ttyymmnn 03/02/2020 at 12:00

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It looks like  the start assist rig on that truck isn’t linked to the truck’ s motor. There is just a big ol crank on the top that some guy has the honor of coaxing into life a V-12 with pistons the size of coffee cans. That will keep o ne warm.

user314 > Only Vespas... 03/02/2020 at 12:29

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So from a quick search I’ve found that is either an AS-1 or -2, which were built on the chassis of GAZ-AA or GAZ-AAA trucks, which were license built and modified versions of the Ford AA truck. I can’t find definitive info on how the started worked though, could be hand-cranked, a PTO from the truck or a separate engine. 

gmporschenut also a fan of hondas > Only Vespas... 03/02/2020 at 12:38

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Looking up some of the other models it appears to be either a Chain or second  drive shaft up from the main driveshaft

fintail > ttyymmnn 03/02/2020 at 13:24

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Truck appears to be a GAZ-A, effectively a Ford built under license in the USSR.

kanadanmajava1 > ttyymmnn 03/02/2020 at 16:51

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I went looking for more info and found a second picture of the situation.

ttyymmnn > kanadanmajava1 03/02/2020 at 17:22

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I’d be interested to know if the cranking mechanism is powered by the truck engine, or if it’s hand crank only. Doesn’t seem to me that you could do all that much with the crank alone.

kanadanmajava1 > ttyymmnn 03/03/2020 at 16:20

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I also found this:

“As aircraft engines gained in power and size, the difficulty and danger involved in starting an engine by “swinging the prop” increased dramatically. The idea of developing a mechanical means of starting an aircraft engine was first conceived by Capt. B.C. Huck, a test pilot for the Aircraft Manufacturing Co., Ltd. (AIRCO) of Great Britain. Thereafter, truck-mounted aircraft engine starters, regardless of manufacture, were popularly known as “Huck” starters.

The starter consisted of a “claw” or similar adapter that was fitted to the propeller. A drive shaft, which could be adjusted both vertically and horizontally, was mounted on a truck chassis and was driven by means of a chain or gear from the truck. A spring-loaded clutch that engaged the claw or prop boss was mounted on the end of the drive shaft. Once the engine started and the propeller’s rpm exceeded that of the starter, the clutch retracted a few inches and disengaged from the prop. ”

The hand crank likely serves some purpose but it’s not for turning the propeller. Maybe it’s used for height adjusting  the angle drive p art?

ttyymmnn > kanadanmajava1 03/03/2020 at 16:44

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Good stuff. Thanks!