stanzahero

Small technical point, there Blackhawk. Designer of the diesel engine was Rudolf Diesel. Nicolaus Otto was known for his work on two stoke spark ignition engines, and was the one who was credited with perfecting the standard for stroke cycle. Stanzahero.

I still don't think it is the holy grail.... There have been things like this around for ages.. ...sleeve and rotary valves... The big issue was always compression sealing and oil consumption. A similar design is already in use for model engines is SP range of RCV engines. It has only the single con-rod connected to a gear driven rotating sleeve. Nice idea but it is limited to a single cylinder and the component strength of the cylinder gear. Stanzahero.

does this mean we go back to the days of "rotary" engines not "radial" ones?

Biggest Buzz My biggest Buzz was landing at another airfield after receiving my XC endo, with my brother (shortly to become fist non-pilot passenger) watching, and have him comment that he thought it was a real pilot - not me.:confused: With no instructor present, or within radio contact it hits home the responsibility. :thumb_up:

mmmm.... trainer : J120 (man of simple tastes...) fun : CA 13 Boomerang (I'd live with a Hawker Fury here) people mover : SupermarineWalrus (I like the outside loop idea)

:encore: Well done! now the fun starts... You want to date an aircraft???

Bunny in a Log First... catch, kill and clean said bunny - I'll call him (or her) "Bugs" for future reference. Boil Bugs till the meat falls off the bone. Mix (not mixed-up-my-toesies: just the meat) with a dry bread crumb, a little salt and some thyme. Hollow out a large marrow (the log, folks) then stuff the marrow with Bugs and breadcrumb. Bake the marrow until cooked (about 20 minutes to half an hour). Serve sliced in 1 inch (25.400 mm for the metric-asized youth) chunks.

Beats the heck out of the biggest engine I ever built... I remember seeing an engine like this using a large (6 cylinder - 8 liter) diesel engine as an oil pump. I like how they engage reverse... they slow the engine down to an "idle" then advance the timing enough to fire it backwards...

Some weird single engined B-17? No armament or wing borne engines... the prop must have one heck of a diameter.... imagine the rudder needed on take off!

I heard a quote once... "It is a shame that that daughters grow up like their mothers, while their sons don't."

A belly landing where the wheels got in the way? "... now making impact at gate 3...."

An ash cloud would have sand-blasted the aircraft.. One image shows the fuselage still has a good paint job.

I don't think Decca would of had it any other way. He jumped at every chance he had to spend time with his.

I met up with Decca several times while Bec and buby were in hospital in Ballarat. I couldn't believe how much of a positive attitude and fighting spirit he had. I only hope I would have the same in that circumstance. At least he can fly now. Stan, Bec and little Megan.

Back in the early days of my career (first 10 years) I used to work with Bedford diesels. Some of these engines had no valve stem seals by design. When they were fitted, they increased the stem and guide wear considerably because of oil starvation. This not only made some heads unserviceable (they had integral valve guides and once more than .025" wear was indicated thin wall guides could not be fitted), but it also killed the life of the engine valves. Most manufacturers will life a part to save a more expensive / critical part (don't start me on Alfa's) which is why timing belts are changed on cars at a odometer reading rather that when the belt starts to deteriorate. My Opinion: Adding stem seals is not a good fix for the issue. This may lead to stem wear at best and "valve no worky" problems at worst. Tommo may be a good reference for this conversation as he is also in the industry.

K-Line Guides I have had a lot of experience with them (though none on aircraft engines), and I have found them to be an excellent device for repairing some guides. As fact hunter had previously said, they used to have a straight groove down one side to assist in the installation of the guide. This was changed into a stepped groove (in the genuine item anyway) to prevent the guide turning inside the guide boss. I have never seen a k-line guide grab except when there was a carbon build-up at the head of the valve. A major advantage to these guides are they are more tolerant of low oil lubrication. A major drawback of them is that an uneven weight distribution (compare the weight of the valve head to the valve stem) tends to wear the guide unevenly because it is a softer material than the cast it replaces (compare "hardness" to "toughness"). I have found them to be good on low-weight valve (DOHC engines - 3FSE/5SFE Toyotas and the like) or where the original has an integral guide (early red/blue motor, early Chev 6 & 8's) and not so good on engines where the valves sit at an angle or flat (some Mercedes, Subaru) My opinion is if the OEM guides are easily replaced and obtainable, use them instead - especially for a flat engine. The manufacturer spends a lot of time researching the engine components and if they deemed them necessary, they would have used them in the first place. Stanzahero.

Does anyone else think this thread doesn't make cents?

Arrow Active II. Flown in the 1932 and 1933 Kings Cup. As for the famous pilots, prehaps someone else could shed some light on that one.

The nose looks like it hides a DH power plant... Which leads me to a Percival Mew Gull... A '30's era racing machine powered by a DH Gipsy Six.

Horten Flying wing?

It was also designed around the main gun to the point that the nose wheel is actually located to the starboard side of the center-line.

There are three types of people in this world: Those that count, and Those that don't. I thought I was funny, then I realized I was kidding myself. If you have two arms, you have more that the average number of arms for a person.... ... Same goes for legs...

Serious question.. no offense indented.. Would that have been a road accident or an aircraft accident if a fatality / serious injury had occurred?

I agree with cficare... I did one lesson a week and had no issues. I also had a six week break (busted ribs) with little ill-effects to anything but confidence. I drew a picture of the dash on a piece of cardboard to practice while I wasn't flying and it helped with my circuit checks.

I said "no" to the solo twice before I went. He was happy with me but I'd done one rough landing at the start of the lesson and I wasn't game to go it alone.