Aermotor 8 Cycle (PUMP JACK) engine "HIT & MISS"

[snowyphil65]

I love watching hit and miss engines, nice muffler also.

[Motaro76]

Nice engine - air cooled without fan! It would be nice 4displacement boats, when it had smaller flywheel.

[fpvshitsonhsv]

This is why we have 4 strokes and 2 strokes now.But good to see an old engine tho

[Jebaroni]

the 4 extra strokes (breathe-exhaust-breathe-exhau­st) were used to help keep the cylinder cool. Remember this is an air-cooled engine with no fan to draw air across the cylinder. Also, the farmer would fill up the fuel tank and then leave...the engine would run until the fuel ran out-totally unsupervised.

[ChuckE2009]

cool!!!

[4x4Explorer]

i bet that thing is amazingly effecient

[RoboTekno]

d@mn, never heard of an 8 cycle, neat

[41Zman]

yeah they are a very unique engine and a littl bit hard to find parts for. ive got one that im almost done restoring. just waiting for a part to be made and hopefully that will finish it off. then ill post a video of it on here

[1989FtB]

can you rev them? jw and what were they used for, what kind of gas, this stuff is very intresting to me

[fm1224]

no, they run at one speed, they fire (hit) then miss several times, the weight from the wheel gives it inertia. It was used to run a pump, the one with a handle, only with the handle removed. Back in those days people would take engines of any kind and try to get them to run anything they could from washing machines to grinding stones, those big round ones.

[geoff390]

Does 8 cycle mean that it fires every 8 cycles? Great sounding engine.

[fm1224]

Basically yes.

[nafango22]

whats the point of it firing so unfrequently?

[fm1224]

Good Question...that was the way they all were back then, This was before they figured out how to run them smoother, called throttle governed. The weight from the big flywheels gave the engine inertia, this was the driving force giving the engine power to work, the "hit and miss" run on just a little bit of gas, and they were cheap to run all day long, with little gas. They were crude mechanical engines that just worked, and ran just about for ever!

[CyberDruidtheModGod]

What a lovely sound

[41Zman]

is the magneto on this engine a webster tri polar? ive heard these type of aermotors are hard to find

[fm1224]

Yes, the magneto on this engine is a Webster tri polar, thanks for your comment.

[fm1224]

Also for those who don't know, a Magneto was an up grade from the standard coil and battery, often called a "buzz box". With a "mag" a farmer or who ever didn't have to worry about having a charged battery all the time to keep the engine running. This option was very expensive back in the day $5-$20 more, and a lot of people couldn't afford this, so to find an engine that has a mag makes it more rare. For engine collectors it makes it nicer, keeps you from messing with a charged battery.

[fivestander]

American made and still running! Thanks

[RPSRecords]

Very Cool

Its so nice to see it run

Great work Frank

Gary