hiperlight

At the risk of being pedantic, the last time I was at Crookwell airstrip, it was north-west of Goulburn. With a density altitude of around 3000 feet, the hill off the north-western end and Crookwell's own dedicated cloud, operations there could be interesting. Bruce

Ozzie said: 'careful, there is always a spare slot at the wall for troublemakers' Is that 'The Wall' at Darlinghurst??? Hiperlight

YHOX - bye, bye In 1955 Hoxton Park was an abandoned WW2 emergency airstrip with weeds growing through cracks in the bitumen surface. We (RAAF National Service Trainee Airmen) did stall and spinning training, in Tigers and Chippies, above the strip. On one occasion, indelibly etched on my memory, the engine in my Chipmunk (VH AJD) failed to respond to the throttle after a spinning exercise. I was on final for what would have been runway 34, just about to shut the switches and fuel off, when the motor came to life and I returned to base. It was not until 2004, 49 bloody years later, that I landed at Hoxton in a Piper Warrior. The weeds were gone and the bitumen was painted with runway markings. It's sad to see it go, but understandable in a rotten society motivated by money and greed - and believe me, I am anything but a socialist. Bruce

Brains My three year old grandson was sitting in the bath when he noticed his testicles...'Mum, are those my brains?' he asked. His mother quickly replied: 'No, son...not yet!' Bruce

Nev, I don't think it is quite that simple...'centrifugal force' is an apparent force...centripetal force is a net force applied to an object to change the object's straight line inertial path which is tangential to its new circular path. Without a centripetal force (which acts on an object towards the centre of its circular path) an object with a velocity (speed and direction) will move in a straight line, unless there are other external forces acting on it. OK, that's enough mental exertion from simple old me...where are the Physicists out there. Bruce

]Nev, Please define and quantify 'centrifugal force'. Bruce

You know what I like about QLD? Whenever I go there - everyone's always smiling! :big_grin::big_grin::big_grin: That's because they don't know what's really happening!!! Bruce

Hiperlight II with Wankel Rotary A few years ago a Hiperlight II was fitted with a Wankel Rotary (twin). I don't have much info on it...here is a photo taken at Oshkosh.

A classic example of two linked crankshafts 'fighting' one another was the Ariel Square Four. Another interesting opposed piston diesel was the Napier Deltic used in Motor Torpedo Boats in WW2. Three crankshafts set up at the apexes of an inverted triangle with three cylinders and six pistons between, in each bank. General Motors bought the rights to that engine in the 1960's (I think), and converted it to steam as an exercise to prove that steam power was not a practical alternative to their 'gasoline' guzzling V8's. GM has, I believe, archived it for the 'future'. Bruce

The Rootes Group Commer TS3 'Double Knocker' from the 1940's until the 1970's was similar in design to the Gemini 100 except for the single crankshaft and substantial rockers. http://www.oldengine.org/members/diesel/technical/TS3.htm Bruce

John...I don't think there is anything to add to your post. It is very sobering. After reading it, I felt numb. Bruce

Hello Bob, Here are a couple of ideas: (1) if your mate sends those emails to other computers and they are not duplicating there, then maybe you have your email program is set to leave a copy of all messages on your server...then each time you download mail you will see the message again. (2) if your mate's hard drive is almost full and Outlook Express has insufficient space to move the sent message from the outbox to the sent items folder then the message will remain in the outbox and will be resent each time he selects send/receive. Bruce

Oops...9.24pm Sunday in Vietnam is 1.24am DST Monday in Sydney...DST has another week to run!!! Bruce

pdutholt...that would only work if aircraft flew with groundspeed and not airspeed!!! Bruce

Looking at the traumatic damage to crankshaft makes one wonder whether it was due to a prop. strike with power on. Bruce