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Inverted engine - 1/15/2002 7:17:59 AM   
Allie33


 

Posts: 158
Joined: 12/24/2001
From: Palm Bay, FL, USA
Status: offline 		Help me out here. The Inruder ARF I just got is set up for an inverted engine. I have never run one like that before. What should I expect? Or do. BTW, is a OS .61 2 stroke.

Thanks.
       Post #: 1

Inverted - 1/15/2002 3:17:16 PM   
ec121k


 

Posts: 255
Joined: 12/27/2001
From: Conestoga, PA, USA
Status: offline 		Usually it isn't too bad if you can start the engine with the plane inverted. Two strokes are like that. I had one and that was enough. I try to usually mount my two strokes sideways with a "Pitts" style muffler.

Expect to either install low throttle glow heat or have a higher idle since they tend to load up easier inverted.

4strokes like inverted alot better since they have valves at the top of the head. Alot less chance of a hydraulic lock and maybe a bent rod. Better scavenging means they don't need glow heat.

Hope this helps.

Tony

(in reply to Allie33)
       Post #: 2

Inverted engine - 1/15/2002 5:30:36 PM   
downunder-RCU



Posts: 1125
Joined: 12/27/2001
From: Adelaide, South Australia
Status: offline 		About the only problem you might have is overpriming causing a hydraulic lock...but you've got to be REALLY trying if you do that
Presumably if the plane is set up for an inverted engine then the tank will be at the right height, that is, the centre of the tank roughly level with the centre of the carby.
I find the easiest way to prime them for the first start of the day is to invert the model and prime as normal and when it feels a little wet just flip it back on the wheels and start it up. Remember that if you prime with the engine inverted it's more difficult to get the fuel UP to the crankshaft port and into the engine, it likes to dribble out onto the ground Same place the fuel goes if the tank syphons......
I've never had a problem with loading up at idle but it could happen if the low end mixture is too rich and you idle for extended periods. I've been running inverted engines (CL and RC)for 30 odd years so it's all a bit second nature now.

(in reply to Allie33)
       Post #: 3

Inverted???? - 1/15/2002 6:07:49 PM   
ec121k


 

Posts: 255
Joined: 12/27/2001
From: Conestoga, PA, USA
Status: offline 		Not really. How can you say your engines are inverted if you live in Australia?

Couldn't leave it alone,
Cheers,
Tony

(in reply to Allie33)
       Post #: 4

what a reply - 1/16/2002 7:27:53 AM   
FIVESQUARE



Posts: 625
Joined: 12/9/2001
From: little rock, AR, USA
Status: offline 		Tony you are my hero!
5

_____________________________

When things start going wrong while airborne, its like the whole world is a tuxedo, and you are a pair of brown shoes.

(in reply to Allie33)
       Post #: 5

downunder - 1/16/2002 8:03:48 AM   
downunder-RCU



Posts: 1125
Joined: 12/27/2001
From: Adelaide, South Australia
Status: offline 		LOL....have to pay that one

(in reply to Allie33)
       Post #: 6

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> Inverted engine
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