Giants From Down Under

[RustyTumbles]

	Quote: Originally Posted by RH1N0
	OK. Here are the trends I can see: Trend 1 - Actual RPM - basically just the average of all results and about 1620 RPM. Trend 2 - Series of negative spikes - possibly idle miss fires which create that stroboscopic effect and looks like the the prop stands still every now and then if you stare at it. Trend 3 - A series of arcs which are probably an engine harmonic and may allign with the lumpy idle sound that a DA170 has. Possibly related to port timing etc. Trend 4 - A much shorter series of arcs which repeat at roughly 9 cycle intervals so maybe a (3 x 3) propeller harmonic? I'm no expert and most of the above is just guesswork on my part.

Thanks mate now I can see them. Have to remember I'm just a dumb blackhander after all

[RustyTumbles]

	Quote: Originally Posted by RH1N0
	OK. Here are the trends I can see: Trend 1 - Actual RPM - basically just the average of all results and about 1620 RPM. Trend 2 - Series of negative spikes - possibly idle miss fires which create that stroboscopic effect and looks like the the prop stands still every now and then if you stare at it. Trend 3 - A series of arcs which are probably an engine harmonic and may allign with the lumpy idle sound that a DA170 has. Possibly related to port timing etc. Trend 4 - A much shorter series of arcs which repeat at roughly 9 cycle intervals so maybe a (3 x 3) propeller harmonic? I'm no expert and most of the above is just guesswork on my part.

Thanks mate now I can see them. Have to remember I'm just a dumb blackhander after all

[RH1N0]

	Quote: Originally Posted by RustyTumbles
	Thanks mate now I can see them. Have to remember I'm just a dumb blackhander after all

I'll make a queertrader out of you yet!

[RustyTumbles]

LOL I doubt that....

[RustyTumbles]

Had a pretty good day today. Got 5 flights on the sukhoi and 2 on the badboy. Managed to do a benny and had the fuel tank come loose on the last flight. It didn't split but in slid foward and pinched the carb line resulting in a deadstick landing (that I only just got back onto the field). I cleared the fence but about 3 feet so the heart was pumping pretty hard.

[Jamieman]

Not a bad day here either.
Forecast was for strong winds & rain.
Dead calm & slightly overcast all day.
Top days flying.

[Greg Bellert]

Excellent day here too.
NO wind, slightly overcast ( keeps the sun out).
No guessing there was'nt a comp organised anywhere.

Member in our club maidened a Hangar 9 2.6 m 260.
Evolution 116 twin.
Nice plane, and has some real grunt.

[RustyTumbles]

That thing would be off the hook. Those motors put out some serious grunt. I've flown one in a comp-arf 2.6m yak with cans and a 29x10 and it would still rip the prop.

Just curious as to how many guys from down Hervey Bay/sunny coast area would travel to Townsville for a comp?

[Greg Bellert]

Rusty

I was thinking the same when John flew it.
This thing really does rip the prop.
Did they go to a 3 blade - what size ?

[RustyTumbles]

Went to a 29x12 I think not 100% sure.

[Royster]

	Quote: Originally Posted by RustyTumbles
	That thing would be off the hook. Those motors put out some serious grunt. I've flown one in a comp-arf 2.6m yak with cans and a 29x10 and it would still rip the prop. Just curious as to how many guys from down Hevey Bay/sunny coast area would travel to Townsville for a comp?

Mmmm 17hrs+ from Brissy, dunno but sounds like fun and if there was enough notice I'd say yes.
Zac and I would probably stay at least a week to be worthwhile the trip up.

Nice save on the Sukhoi Rusty

Good to see ya still flyin the 3D profile dude

[snoopy]

a few shots i found on th brownie and Richo is in love with someone in each photo