Re: Contra vs Counter Rotating Props

PV Pilot Wed Apr 25, 2012 2:06 pm

The Dehavilland Mosquito spun them in the same direction(right hand). The fix for the torque issue?,,put a big fin on it!

Cox International Wed Apr 25, 2012 3:06 pm

fredvon4 wrote:Does the red 8cc stunt tank provide some Coriolis effect to the propellers?

HUH ???

fit90 Wed Apr 25, 2012 6:46 pm

Cox International wrote:
fredvon4 wrote:Does the red 8cc stunt tank provide some Coriolis effect to the propellers?

HUH ???

Only the gold tanks. The red one might, though, on a good day.

**RknRusty** Wed Apr 25, 2012 9:55 pm

fit90 wrote:
Cox International wrote:
fredvon4 wrote:Does the red 8cc stunt tank provide some Coriolis effect to the propellers?

HUH ???

Only the gold tanks. The red one might, though, on a good day.

What if you're in the Southern hemisphere?

dinsdale Thu Apr 26, 2012 6:20 am

WingingIt74 wrote:
nitroairplane wrote:Counter is inward contra is outward.

I don't think that's right Indra...

Contra-Rotating Props
http://en.wikipedia.org/wiki/Contra-rotating_propellers

Counter Rotating Props
http://en.wikipedia.org/wiki/Counter-rotating_propellers

Phew!! someone finally got it right. Whether a twin engined aircraft has its props spinning "inwards" or "outwards" IS UTTERLY irrelevant (in this context) - they're still COUNTER rotating. Contra rotating props are concentric, as the picture above shows.

dinsdale Thu Apr 26, 2012 6:30 am

I flew Dakotas and Caribous in the RAAF, both having their props (engines) spinning in the same direction. Neither aeroplane had any particular vices on 1 engine, either side - I KNOW from experience!! Flying

WingingIt74 Thu Apr 26, 2012 8:28 am

I'd love to fly on a DC-3 aka Dakota. It's one of my favorite planes.

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