Wayne T Mathews

Seriously Fellahs, you've gotta be careful of those Ipads... The kids'll infect it with facebook and then you'll start to twitter... I'm warning you now so that later on, I'll be able to say, "Nya nya nuh nya nya,,, I told you so...." Having set that up, let me say I've got OZ on my Iphone and it's great mate... an ersa in my pocket... It's great for that alone.

Oh good Lord, Don, I'm sorry,,, I didn't know... On top of every thing else, you're a one eyed Hunter Valley biggot b'gorah... Don't pay too much attention to him Declan... For sure the Hunter Valley is nice in places, but for really great flying country and conditions, you need to get through the Murrurundi Gap (at the top of the Hunter) and go just a bit further North West...

Hear hear... Thanks Michael.

WilCo Glen. Thank you for having us.

Hey David, do you have a copy of your final post on the other forum, and can we see it? If you're not comfortable posting it publicly again, will you email it to me please? I notice that CFI's last words over there dissapeared fairly smartly too.

Now you're being cruel Carol... I'll be alright 'cause I'll be up at my Mum's place doing her hunny-doo list, and that comes with lashings of all the good stuff mentioned above... But the other blokes?... Poor bugahs,,, most of them are ankle deep in drool by now. :fest30:

G'day Declan, What David forgot to mention is that when he says 23 hours driving to Port Lincoln, he means 23 hours driving at 100 KPH in a relatively straight line. It's not like Ireland, Mate. But it is a great place for the Irish... Come on down and have a look around,,, shouldn't take more than but a year or three to do that...

INCOMING!!!..... :peepwall:

Good on you Will... Are you coming to Gloucster?

I'm sorry Eastmeg2, I do not like that idea. I agree there is a slim chance it may dislodge some small piece of ice. But with a heated collar around the carby outlet, it's a mighty slim chance. What it will do though, is waste fuel. It will reduce your engine's life by virtue of the expansion and contraction stresses you inflict every couple of minutes. And it will tire you more than needed because you're putting in unnecessary engine, and therefore flight control, corrections every couple of minutes. What does your aircraft's operating/flight manual say about setting and maintaining cruise power? Does it say to increase and then decrease power over about 2 to 3 seconds every couple of minutes? If it says to do that, then fair enough. But I'll bet a dollar, sight unseen, that your aircraft's operating/flight manual doesn't say that. Keep the sunny side up, Wayne.

Be very careful OME... Last time I saw a guy take up a challenge like that, he had a very rough, and painful landing... Ouch!... Keep the sunny side up, Wayne.

Thank you for that David, I'm not familiar with trikes, and wasn't thinking of pusher configurations when I wrote my previous post. Putting a heated collar on such engines makes perfect sense. In early August, our Tecnam Seirra had an incident with a new pilot flying. Coming in to join the circuit, the engine coughed and burped when power was applied to level off. The pilot elected to not continue the circuit, and landed immediately on the vacant runway in front of him. Not a bad decision given the circumstances. On the ground, the engine ran normally and everything was fine. No fault was found with the engine during subsequent ground runs and test flight. A rare case of carby ice was diagnosed. However, in mid September, I went and got the aircraft and ferried it back to Gunnedah for it's 100 hourly. During the after take-off checks, when I turned the boost pump off, the fuel pressure dropped towards zero. I turned the boost pump back on. The fuel pressure recovered, and I climbed to altitude before investigating the problem. Turns out we had an intermittent engine driven fuel pump (EDP). We changed the EDP and haven't had a problem since. Intermittent faults are rare, and a pain in the butt to diagnose, but they do happen. And carby ice ain't the only thing that'll cause an engine to cough and burp. Keep the sunny side up, Wayne.

Good morning Red, Most conventional aircraft engines use "RAM Air" direct from some sort of NACA scoop to the carby. The air is cold, therefore more dense, which allows us to get the maximum power out of our engine that we can. However, when there is moisture content in the air, and the temp of the air passing through the carby venturi drops to zero, ice forms in and around (usually downstream of) the venturi, making it hard for the engine to "breath". We counteract this in most aircraft engines by fitting/having "CARBY HEAT" or "ENG ANTI ICE". The carby heat usually takes air from around the warm muffler and directs it to the carby inlet, therefore raising the air temp through the venturi to above the freezing level and preventing ice formation. However, the warm air is less dense, therefore the engine does not supply maximum power with carby heat on. Rotax 912s don't use RAM air, they use air that has already been slightly warmed by passing over and around the engine. Mr. Rotax has worked out that with the air intakes at the back of the engine, getting carby ice is extremely rare. So he normally doesn't fit carby heat to his engines. Having said that, it is possible during a power off descent to cool the engine sufficentlly to have air going through the carby at a low enough temp to induce carby ice. A practical remedy/protection for this event, is to smoothly increase, then decrease, the power for a bit every thousand feet during the descent, which normally keeps the temps out of the critical range. I'm not a fan of "blipping" the engine, certainly not every couple of minutes during the cruise. It is a statistical fact that most engine failures occure during or immediately after a power change. And blipping the engine during cruise makes about as much sense to me, as changing down a gear for a bit while driving, so as to give top gear a rest. (believe it or not, I know a bloke who used to do that) Keep the sunny side up, Wayne.

G'day Cazza, there's a few of the carers have checked in here in the last few days... Unfortunately I can't make it to the big T in November, but thanks for the invite... And for those who haven't met the lady yet, let me tell you she makes outstanding cookies.:trust_me:

G'day Turbs... Man, has this site got some bells and whistles, or what? :fencing: :fest30:

G'day Don, Sure is a bunch of the blokes over here aren't there? Don't know about everyone else, but I've a learning curve like a lunar shot at the moment as I learn how to drive all these buttons and things. :think: :why:

Good to see you here too Scotty. All this new fangled stuff... Wow!... That cave I've bin lookin' at down in the S/E corner of the South Island is lookin' betterer and betterer. D'ya reckon CFI and his kin'll give us a fair exchange rate if we slink off down there to hide from all this new teknowledgy? Ol' Jay Tigre got downright sprightly when I ran the clip for her. Asked me t'tell you not to let him hurt hisself showin' off though. She wants him to look his best when he gets his pitchar taken with her down there in Gloucster. We've gotta do something about that Dave fellah. Just 'cause he's grayer than us and has less hair, he seems to think he can be cheeky... I'm lookin' to find some sippin' whiskey... That'll cure him, I reckon.

Palmolive, David, it's palmolive what does it. Not your fault you don't know that though, considering the time you spent with the polynesian pommies.

G'day Scotty, I'll be there at Gloucster with the old girl. But you've gotta promise to keep a tight rein on that fiesty young stud of yours. We don't want him hurting himself showing off when the old girl shows him how she likes to do it, now do we?

Thank you folks. Please bear with me while I work out what's where here. I haven't got a clue what all the buttons and things do yet. :confused: Sure are some people here I recognise though. I'm sorry Darren, but I don't know the Jerry's.

I know of only one, Nev. He's a Captain on 737s for them, and he is unsure of how long they'll need/keep him. We were expecting him home this year, but the Indians keep extending his contract for him. Keep the sunny side up, Wayne.

I was told about this site tonight while enquiring where David had gone. May I come in too please? Keep the sunny side up, Wayne.

Heck Scott, I wasn't talking about the picture of the assembled aircraft. I was talking about what you've managed to do so far with the ribs, the empernage, the wheels, the engine et al.... Well done Mate... I love what you've done with your website too... What do I have to do to get you to teach me how to do something like that? Please don't tell me it's just another thing young Jack does to help his Dad. Keep the sunny side up, Wayne.

Geez it's comming along well Scott... Well done. Regards, Wayne.

Welcome aboard Bob... It's an interesting ride, this one.