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Old 8th Apr 2013, 07:59
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Don’t worry Leaddie – you’ve forgotten more than I'll ever know about matters aviation!
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Old 8th Apr 2013, 09:45
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Its why you often see intake runners that curve on top of the engine.
Old Akro
Isn't that pretty much what Continental have done with their IO 520 P engine ? Just wondering if that's what you're referring to.
Cheers RA
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Old 8th Apr 2013, 10:35
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Isn't that pretty much what Continental have done with their IO 520 P engine
Yes.

But if you look at the engine I know best - TSIO 360, its inlet manifold looks like something a plumber would make using scrap exhaust pipe.

The paper by Ratcliffe & Rogers says that inlet air passing the runners sucks atomised fuel out of one inlet runner and pushes it onto the next. You can absolutely imagine that happening with the stubby little tubes on the TSIO 360. The IO 520 (where GAMI made its name) looks pretty similar to the TSIO / IO 360.
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Old 8th Apr 2013, 11:33
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Creampie, yep, it pretty much is the lawyers fault, whom else's fault would it be?

They rarely have induction/injection systems that result in all cylinders reaching peak on the lean curve at the same point during the leaning process.
GAMI Injectors
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Old 8th Apr 2013, 17:10
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Apologies to John Deakin, I blame it on a late and very cold night after a long day here in Beijing.
What for? I've read the thread, and can't find anything to get excited about! I must be missing something!
As one poster has noted, forced induction does not solve the problem of lousy intake design,
Good comment, and historically some intake manifolds have been unbalanced. But just for the record, one of the things that came out of the research that led to GAMIjectors is that the intake plumbing on the typical 520/550 and 540 engines by CMI (formerly TCM) and Lycoming are remarkably well-balanced. Once the fuel is taken care of, there's very little else that can be done. There ARE some problems with the TSIOs. George thinks he's got a handle on that, but he's so busy trying to get his fuel (G100UL) approved, everything else is on the back burner.

On that subject, if the FAA will just get out of the way, he'll have a real winner! It will mix well with 100LL, you can fill your storage tank or your airplane with any mix of G100UL and 100LL. It has slightly better performance, and is slightly heavier, a wash. Smells good, too!

(Disclaimer: I am not associated with GAMI, TAT in any way, beyond friendship. George Braly, Walter Atkinson and I are principals in APS.)

Best...
John Deakin
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Old 8th Apr 2013, 21:44
  #86 (permalink)  
 
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Welcome to the pprune in the pacific JD 6-7 years and this is your first post!

Folks if you want to take the course and meet John and Walter, the opportunities are getting slimmer. So book in ASAP. Melbourne is almost half booked out already and the Brisbane one is getting close to 70% booked.

Remember if you fly a piston aircraft, understanding the engine, its operation and how to use any engine instruments to monitor, diagnose and thus manage the engine over its life are things you have not been taught in any training school so far. Some of what we are taught is plain wrong.

The payback on this course is really fast. Don't miss it. Your wallet and your safety are the benefactors here. Several thousand pilots in the USA and not one has asked for their money back!

Pleasing to see several commercial operators and LAME's have booked in too.
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Old 19th Apr 2013, 10:41
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I see a few ppruners booked in too
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Old 19th Apr 2013, 10:51
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mmmm, that'll be interesting

Can I buy an APS t-shirt?

Or a GAMI baseball cap?
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Old 19th Apr 2013, 20:28
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Jack, you crack me up!

No need to buy an APS shirt, there are plenty of APS shirts with the famous combustion curves on them which are awarded for best questions and answers.

No doubt you will be in the winners circle! All part of the fun.
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Old 3rd May 2013, 05:04
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only about 10 or less seats left.

If you want to be there and have not booked yet, get on with it.

Missing this opportunity is sub optimal
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Old 5th May 2013, 18:12
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Thumbs up

Only a week before we embark upon the aluminum tube of death in challenge of the Pacific to come see you blokes.

Looking forward to it.

I'll be looking for some good references from my new friends on the best Aussie beer while we're there... and no, I don't think it'll be "Fosters."
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Old 5th May 2013, 21:48
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Walter,
You'll need to indicate if you want your brain to run rich of peak or at peak or lean of peak before we make recommendations.
Bottoms up RA
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Old 5th May 2013, 21:52
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Walter, some of the best beers come out of the States

I have been testing beers for the last 30 years & will have a taster pack ready for you in Mel-born

Have a great trip & don't forget to look right when you cross the road out here
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Old 5th May 2013, 22:50
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I run ROP when appropriate and LOP when appropriate, so I'm flexible!

That "look right" is gonna be a tough one--I think I'll let an Aussie drive!

Looking forward to the taster pack.

Last edited by Walter Atkinson; 5th May 2013 at 22:51.
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Old 5th May 2013, 23:10
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Beer is for making batter for Barra!

Real men drink Bundy OP.

Dr
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Old 5th May 2013, 23:15
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Forkie does have a point. Mr Atkinson does appreciate an Ord River Rum, which I am out of

Perhaps you should bring some Barra down for the BBQ Forkie?
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Old 5th May 2013, 23:44
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Forkie does have a point. Mr Atkinson does appreciate an Ord River Rum, which I am out of
Perhaps you should bring some Barra down for the BBQ Forkie?
I assume the Caboolture Seafood Market sells Barra!

I couldn't catch one to save my life ATM!

40+ x legals boated in each of 2011 and 2012 vs 3 x legals for 2013, to date!
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Old 6th May 2013, 02:53
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Now we're talkin'.
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Old 8th May 2013, 11:11
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Jabba
Damm you Jabba sucking me into this course. My game plan was to blitz the introductory test , scalp my ticket and retire to the nearest pub for 3 days while Mrs RA waited at home believing I was improving my mind. As it turned out I got 3 wrong 88% so now I have to attend tail between my legs.
Tip for procrastinators like me--write down your answers on a piece of paper so when you get one wrong you don't have to wrack your brain what you thought er worked out was the answer after you see the correct one. See ya all at CAB if for no other reason than to test the octane rating of the local brew.
Cheers RA
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Old 8th May 2013, 12:07
  #100 (permalink)  
 
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Mrs Jaba can attest to getting that score!

Actually you have done very well indeed. Far above the average.

Beer/Rum testing 201 is the subject schedule for 6pm Saturday.
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