Jump to content


Popular Content

Showing content with the highest reputation since 04/16/2019 in all areas

  1. 3 points
    Once again, the Brazilians have spent a heap of time, money and effort producing something that provides no real engine benefits, no technological advances, no weight reduction, and no fuel economy gains. I really do wonder what the aims of these engine development programmes are, and if anyone actually wrote down attainable and important targets for their redesign. At $12K for a MotorAV engine, you might as well go and buy a Revmaster 2300 for under $9K and have a VW engine that was designed and refined over 40 years or so, by a bloke who is an engine design expert. The bragging rights about snaring Bill Brodgen from Continental Motors doesn't hold any water for me, Continental were still manufacturing 4 and 6 cyl side valve industrial engines with abysmal power output in the mid-1970's. These engines designs dated from the early 1930's. I'd like to think that engine technology has advanced at a pretty exciting rate over the last 40 years, at least - but companies like Continental are classic industrial dianosaurs - "We've always done it this way! - it works, why do you need to change anything?" If the Japs were into aircraft engines like they're into automotive engines - by today, we'd have a Japanese IC aircraft engine available, that weighed 50 kgs, produced 200 reliable HP, ran as smooth as silk, and had a 3000 hr TBO. Honda are producing their new i-DTEC 1.6L diesel with aluminium heads and block, high-swirl combustion chambers, chrome-moly steel pistons, a variable geometry ECU-controlled turbocharger with intercooling - and it produces 118HP at 4000RPM and weighs 47kgs less than their previous 2.2L diesel engine. This new engine features weight-saving in every single engine component, high plateau bore honing to reduce friction, plus a special synthetic oil designed specifically for the engine. All this translates into 3.7L per 100kms on the highway in a Honda Civic. If Continental had advanced with their technology and design like the Japs have done, they just might be producing hundreds of thousands of lightweight aircraft engines today, instead of being an industrial and technological laggard.
  2. 2 points
    Hey Friends, it has been some while since my last post. Sorry I was bussy flying my Savannah. First 10 hours I did solo flights then my friends wanted to go with me. I love the look on their face, when we are crusing the air. Right now the hobs couter reads 76 hours and the list of friends to go flying is much longer then the list of friends already done it. I want to take the opportunity to again say thanks to you. You where a great help. What would I have done without the collection of tipps I got esp. from Mark and Kyle. Thanks Guys... you are great!
  3. 1 point
    While any terminals should ideally be 'bright' and certainly free of oxidation, cutting them back with a coarse abrasive is not always the best policy: First, if the terminal has an anti-oxidation plating, you may well cut that away. Second, if the resulting surface is scored, you are actually reducing the surface area that is in contact. Grease/petroleum jelly to reduce oxidation is an excellent idea. And with a wooden aircraft, I would be attaching all my terminals to a piece of metal, then attaching that to the aircraft. That is, I would not be relying on a screw, or bolt, that passed through wood, to maintain pressure on the terminals.
  4. 1 point
  5. 1 point
    Yeah, got me baffled as well.. Next they'll be designing drum brakes.....great design and metallurgy. ....but in the end, well, they'd still be just "drum brakes". It's all a bit of a shame that all that effort went into producing what looks (as in visually) like a great engine but just underperforms in nearly every aspect. I can't fathom why you would get an ex Continental employee involved. It's like getting a designer of the Holden HQ on board for your new car...lol. I so wish Honda would make a competing engine to the Rotax, just out of spite and in response to it's absurd pricing. (Monopoly) Including the same mounting points. I imagine a "junior" design team, using Honda's data base, could knock up a 100hp engine in a few months. They wouldn't even have to use advanced or current technology to beat Rotax in EVERY preformance level. Rotax marketing must totally dumbfounded why no one has had a serious crack at the crown ..... for over 20 yrs. DESPITE the purchase price and DESPITE the hundreds of percent markup on parts.... most being off the shelf commercial/industrial/automotive products.
  6. 1 point
    Plus most of the newer roads have constant radius bends, so you set your lean angle & go for it. I also found French car drivers to be very sympathetic to bikers, unlike just about every UK cage driver.
  7. 1 point
    Weddings and birthdays.
  8. 1 point
    As is so often the case in our risk /responsibility averse society - Best not to ask the question.
  9. 1 point
    I look at the stats page regularly The extra 2300 members we have gained in the last year should be providing enough of a boost Can't understand why this big increase is not flowing on to more aircraft, steady around 3350 all year I do think over $400 to keep a file on Thruster and I is getting up there.
  10. 1 point
    Arguably Australia's best-loved aeroplane, the Southern Cross lies almost forgotten in a small display case near Brisbane Airport. As Eagle Farm has been developed, this memorial to the pioneering flights of Smithy, Ulm, et al has been bypassed and is rarely visited. Meanwhile, about a mile away, millions of travellers pass thru the modern airport oblivious to this historic gem. Few are probably aware that it was first to cross the Pacific. This aircraft helped pioneer long distant flight and should be relocated and given pride of place where every traveller can see it. (There is a persistent rumour that bits of this aeroplane came from the one another Australian, Sir Hubert Wilkins, used in his pioneering over the North Pole.)
This leaderboard is set to Melbourne/GMT+10:00