hiperlight

Hello Arthur and Cecil, I've been in the tablelands for 3 or 4 days mustering and crutching sheep, trying to cope with the worst drought in living memory, and I've just arrived home after a four hour drive. Anyway...I haven't flown my hiperlight yet. I still have to convert my PPL to an ultralight certificate but with my body mass (like big boned) I have some difficulty sitting in a dual seat ultralight with an instructor heavier than about 40kg...but I'm working on it. Even when I was younger and fitter I couldn'tsit comfortably in a Cessna 150. The stupid thing is my Hiperlight will carry me easily. Piper Warriors are great, but I have this fettish for biplanes...something to do with my toilet training, I think. My relationship with two strokes is very good...but the little beasts have minds of their own and will stop at the drop of a hat if they are not pampered all of the time. With moral support froma friend of mine who was involved with HAPI and Limbach in the 1980's I have been building up a half VW engine for the Hiperlight, but my mate was diagnosed with a brain tumour last May and he fell off his perch in early October. I am now continuing with the project after a bit of a delay, but I do miss his input. My wife is on my back to move a couple of electric pottery kilns...the house needs work...I am in the middle of a complete rebuild of a 1973 Porsche 2.4 engine for my 72 911 ....and I am continually running out of money for my projects. God...I have to live to 150 just to do those things on my wife's list. We havetwo rules in this place: (1) My wife does exactly what she wants and (2) I do exactly what my wife wants. I retired 20 years ago but I can tell you I had more spare time when I was working full time. I don't know why I'm writing this, but there you go! I'll feel better after a good sleep. And I'll shift those bloody kilns tomorrow. Bruce

Hello Tom, I've been away for a few days and I'm just catching up. I'll check in the morning and answer your question about oil stains. The exhaust exits under the blue panel of the lower wing and the tailpipe points downwards. I don't think it is a problem but I'll let you know tomorrow. Bruce

(1) 'Our gasoline has as rule 25% of anhydrous ethanol mixed' (2) 'We do not make any change to the engine they are standard.' (1) Except in very low humidity the ethanol would not be anhydrous for very long. (2) Unless the carburettors or injection systems are modified the engines would run dangerously lean. Bruce<?:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><?:NAMESPACE PREFIX = O /><O:P></O:P>

Thomas, I don't want to send you on a wild goose chase but try www.specialtytapes.net . They are located in Wisconsin. 3M 'Therma-Bond' might be the go. I'm surprised that Ted Mayfield or Ron Jones couldn't advise you of the tape brand. Ithas tobe a proprietary item. I'll bet they didn't make it themselves. If you manage to locate the tape please let me know as I'll be recovering my Hiperlight pretty soon; although I'll probably use the Stitts system. Our 95.10 allows up to 300kg MTOW and is not as restrictive as your FAR 103 regs. Are you still using a 277 engine? Regards Bruce

Welcome Thomas, I'm rushing out at this time so I'll contact you on this forum later today. In the meantime you should contact Ron Jones at Thunderbird Aviation in Michigan USA. Google 'hiperlight' for his website. Talk later, Bruce hiperlight

There are some incidents in one's life that are indelibly imprinted on one's memory. One such incident is the training exercise required in RAAF basic flying training in DH 82's: "#24. Re-starting the Engine in Flight" which was not to be practiced solo. My instructor was P.J. Gallagher and after three attempts to stop the prop by stalling, recovering and re-climbing to about 5000 feet over Hoxton Park (an abandoned airstrip in those days) I managed to stop the prop by stalling the aircraft in a vertical position. The aircraft slid backwards before falling nose first towards terra firma. I kept it in a vertical dive (and I mean VERTICAL). The prop moved when we reached 145mph. I think the wings fall off a DH 82 at 150mph. I recall that Pat (an exfighter pilot from WW2) made some expletive through the Gosport Tube and thanked someone. Bruce hiperlight

The aerial photo of Wagga Airport stirred up someinterestingmemories for me. I was an Air Traffic Controller in Wagga Control Tower (the original tower attached to a hangar, not the one in the photo.) That was 45 years ago, in 1961/62. During the time I was there Ansett's VH-TVC ( 700 series Vickers Viscount) crashed into Botany Bay, in Sydney, during a storm. That was in late November or December 1961. Theresulting investigation recommended, inter alia,the installation of sophisticated radar at major airports in Australia. The rest is history. Up until then we used a 'wartime' Cossor raw radar which was useless ininclement weatherbecause of 'rain clutter' returns. Bruce

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Sorry Sam...definitely not Sweers Island!!!! Bruce

I think the F111 was called 'PIG' by the RAAF crews from 1973 or so. I think the official USAF name was F111 'AARDVARK' which was not adopted here. An Aardvark is a mammal sometimes called an 'earth pig'. That sounds logical.....doesn't it? Bruce

Hello again Tim, I don't know the Ossa 250. Is it an offroad bike? What era? Is Mick Andrew an Aussie? (no pun intended). Bruce

Hello timb, Do you mean a BSA 650 Thunderbolt? Bruce

Captain NBL Cappy. I don't relish the thought of waking one morning with the handle of a bread knife sticking out of my breastbone. Bruce

Hello there BigPete A mate of mine had a Beesa Bantam in about 1952 I think. He had to dismount and walk it up anything that looked like a hill. I've known motorised pushbikes to perform better. 70mph in second gear!!!! That was also its terminal speed if you dropped it from an aircraft at 3000 feet. My AG100 is flat chat at about 60 kph, but with five gears I reckon it would out accelerate a mid 1950's 650 Trump Thunderbird to 60 kph. Bruce

Darren I'll see you at The Oaks sometime. Bruce

BlueSideUp, Sixteen years before I bought another bike...I needed it to muster sheep, didn't I? The flying bit was easier...I was an 'approach/departures' controller from 1961 at Sydney Airport and I had to keep up with flying for my job, or so the story went. That was around about the time the #10 pickle jar was full of dried peas. In 1976 I started helicopter training. By this time the kidswere asking why we were keeping so many jars of dried peas, so we dumped them. If we had continued putting peas in jars we would have cornered the market for peas...and pickle jars! So the records are lost! Bruce

Darren-me-old-mate...good for you...but when you've 'harrowed the land that I've ploughed', give me another call. Bruce

You know, it's a bad sign when one reminiscents about the past. Tonight I've had a good dose of anti-oxidant in the form of a few or more glasses of a good red wine, so I figure I'm entitled. I seem to remember that I reckoned I was due for a big spill from a motorcycle when I sold my bikes and removed the supercharger from my 1192cc VW. My girl friend and Icame toa mutual agreement that if I wanted a life of sex with her, they (and flying) had to go. I seem to recall that Tiger Moths, Chipmunks and Austers cost about three pounds seventeen shillings and sixpence an hour and my salary was about eleven hundred and fifty pounds a year. John Laws had a Berkeley SA322 sports car with an 322cc British Anzani motorcycle engine, and he was being paid 100 quid a week -whew! We have been married now for more than 46 years and our four daughters range from 45 to 36. After a few years and a little coercion I found I could 'have my cake and eat it too' - so to speak. Back to motorbikes...in the late sixties (I think) a friend lent me his Honda CB750 four. A brute of a machine...like stuff off a teflon shovel in a straight line with a inbuilt desire to fall into corners. One had to 'pump iron' on a regular basis to pick it up if it fell over. That'll do for now...the anti-oxidant is wearing off. Bruce

At present I have a Yamaha AG100 and a Yamaha Big Bear 4x4 quad...do they count? In a previous life in the 1950's my old man classified me as a 'Temporary Australian'. I had a Harley outfit, an Indian outfit, a Triumph 500 Speed Twin solo, a Triumph 650 Thunderbird with a Murphy sidecar, and access to a BSA Gold Flash, a Red Hunter Ariel, a Square Four Ariel plus others I can't remember. Bruce hiperlight

Pure water has a higher coefficient of heat conductivity than glycol(either ethylene or propylene) or Evans Coolant. HOWEVER, water boils at 100 celcius and Evans NPG+ boils at 190 celcius. For those interested, read the contents of the Technical Info tab onwww.evanscooling.com Also, there is a recent amendment to the Rotax 912/914 service bulletin dealing with coolant dated August 2006. http://www.rotax-owner.com Bruce hiperlight

HEAR, HEAR!! Unless your engine is solid cast iron with a copper radiator and built before 1955 stick to the manufacturer's recommendations for coolants (including change times). Bruce

Hello Yenn The article is an extract from the link given. If you read the last paragraph of the extract again and then read the rest of the article on the website you will get a complete picture. Glycol in a cooling system oxidises with timeand becomescorrosive tothe point of destroying your engine. That is why premixed coolants have additives to, inter alia, neutralise those oxides. If the high glycol mix in your engine is freezing in the bottom of your radiator to the point of blocking it then I suggest you get hold of a glycol refractometer and test the coolant. Fiddling with coolant mixes without a reasonable knowledge of the 'theory' is quite risky. Bruce

Hello gtblu The following is an extract from www.koolance.com/technical/cooling101/102.html Thermal Conductivity Thermal Conductivity is the amount of heat a particular substance can carry through it in unit time. Usually expressed in W/m K, the units represent how many Watts of heat can be conducted through a one meter thickness of said material with a one Kelvin temperature difference between the two ends. (Note: "Thermal Conductivity" is the measure of heat flowing through a length, not to be confused with "Thermal Conductance", which is the measure of heat though a surface.) <TABLE id=Autonumber6 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%"> <T> <TR> <TD vAlign=top width="33%"> <DIV align=center> <CENTER> <TABLE id=Autonumber7 style="BORDER-COLLAPSE: collapse" borderColor=#111111 height=1 cellSpacing=0 cellPadding=0 width=200> <T> <TR> <TD width=200 colSpan=2 height=16> <TABLE id=Autonumber8 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%" border=1> <T> <TR> <TD width="100%" =#999999> Solids </TD></TR></T></TABLE></TD></TR> <TR> <TD width=122 height=6>Diamond</TD> <TD align=right width=78 height=6>2000 - 4000</TD></TR> <TR> <TD width=122 height=19>Silver</TD> <TD align=right width=78 height=19>417.3</TD></TR> <TR> <TD width=122 =#cae4ff height=19>Copper</TD> <TD align=right width=78 =#cae4ff height=19>393.7</TD></TR> <TR> <TD width=122 height=19>Gold</TD> <TD align=right width=78 height=19>291.3</TD></TR> <TR> <TD width=122 height=19>Aluminum</TD> <TD align=right width=78 height=19>216.5</TD></TR> <TR> <TD width=122 height=19>Iron / Steel</TD> <TD align=right width=78 height=19>66.9</TD></TR> <TR> <TD width=122 height=19>Lead</TD> <TD align=right width=78 height=19>34.3</TD></TR> <TR> <TD width=122 height=19>Ice (H2O @ -5<SUP>o</SUP>C)</TD> <TD align=right width=78 height=19>1.6</TD></TR> <TR> <TD width=122 height=19>Concrete</TD> <TD align=right width=78 height=19>1.1</TD></TR> <TR> <TD width=122 height=19>Wood</TD> <TD align=right width=78 height=19>0.12 - 0.04</TD></TR> <TR> <TD width=122 height=19>Carbon</TD> <TD align=right width=78 height=19>1.6</TD></TR> <TR> <TD width=122 height=19>Glass</TD> <TD align=right width=78 height=19>0.8</TD></TR> <TR> <TD width=122 height=19>Rubber</TD> <TD align=right width=78 height=19>0.2</TD></TR></T></TABLE></CENTER></TD> <TD vAlign=top width="33%"> <DIV align=center> <CENTER> <TABLE id=Autonumber7 style="BORDER-COLLAPSE: collapse" borderColor=#111111 height=1 cellSpacing=0 cellPadding=0 width=200> <T> <TR> <TD width=200 colSpan=2 height=16> <TABLE id=Autonumber8 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%" border=1> <T> <TR> <TD width="100%" =#999999> Liquids </TD></TR></T></TABLE></TD></TR> <TR> <TD width=140 height=6>Mercury</TD> <TD align=right width=60 height=6>8.3</TD></TR> <TR> <TD width=140 =#cae4ff height=19>Water</TD> <TD align=right width=60 =#cae4ff height=19>0.67</TD></TR> <TR> <TD width=140 height=19>3M Flourinert FC-43</TD> <TD align=right width=60 height=19>0.66</TD></TR> <TR> <TD width=140 height=19>Methanol</TD> <TD align=right width=60 height=19>0.25</TD></TR> <TR> <TD width=140 height=19>Glycol, Antifreeze</TD> <TD align=right width=60 height=19>0.25</TD></TR> <TR> <TD width=140 height=19>Ethanol</TD> <TD align=right width=60 height=19>0.14</TD></TR> <TR> <TD width=140 height=19>Liquid Nitrogen</TD> <TD align=right width=60 height=19>0.14</TD></TR></T></TABLE></CENTER></TD> <TD vAlign=top width="33%"> <DIV align=center> <CENTER> <TABLE id=Autonumber7 style="BORDER-COLLAPSE: collapse" borderColor=#111111 height=1 cellSpacing=0 cellPadding=0 width=200> <T> <TR> <TD width=200 =#c0c0c0 colSpan=2 height=16> <TABLE id=Autonumber8 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%" border=1> <T> <TR> <TD width="100%" =#999999> Gases </TD></TR></T></TABLE></TD></TR> <TR> <TD width=122 height=6>Hydrogen</TD> <TD align=right width=78 height=6>0.18</TD></TR> <TR> <TD width=122 height=19>Helium</TD> <TD align=right width=78 height=19>0.15</TD></TR> <TR> <TD width=122 height=19>Oxygen</TD> <TD align=right width=78 height=19>0.023</TD></TR> <TR> <TD width=122 height=19>Nitrogen</TD> <TD align=right width=78 height=19>0.025</TD></TR> <TR> <TD width=122 =#cae4ff height=19>Air</TD> <TD align=right width=78 =#cae4ff height=19>0.026</TD></TR></T></TABLE></CENTER></TD></TR></T></TABLE> Specific Heat Capacity Specific Heat Capacity is the amount of heat a particular substance can hold. Typically expressed in kJ/kgK, the rate depicts how many kilojoules of energy are required to change the temperature of one kilogram of said substance by one Kelvin. <TABLE id=Autonumber6 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%"> <T> <TR> <TD vAlign=top width="33%"> <DIV align=center> <CENTER> <TABLE id=Autonumber7 style="BORDER-COLLAPSE: collapse" borderColor=#111111 height=1 cellSpacing=0 cellPadding=0 width=200> <T> <TR> <TD width=200 colSpan=2 height=16> <TABLE id=Autonumber8 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%" border=1> <T> <TR> <TD width="100%" =#999999> Solids </TD></TR></T></TABLE></TD></TR> <TR> <TD width=122 height=6>Human Body (avg)</TD> <TD align=right width=78 height=6>3.47</TD></TR> <TR> <TD width=122 height=19>Concrete</TD> <TD align=right width=78 height=19>3.3</TD></TR> <TR> <TD width=122 height=19>Ice (H2O @ -5<SUP>o</SUP>C)</TD> <TD align=right width=78 height=19>2.1</TD></TR> <TR> <TD width=122 height=19>Wood</TD> <TD align=right width=78 height=19>1.7 - 2.7</TD></TR> <TR> <TD width=122 height=19>Rubber</TD> <TD align=right width=78 height=19>1.6</TD></TR> <TR> <TD width=122 height=19>Aluminum</TD> <TD align=right width=78 height=19>0.89</TD></TR> <TR> <TD width=122 height=19>Glass</TD> <TD align=right width=78 height=19>0.84</TD></TR> <TR> <TD width=122 height=19>Carbon</TD> <TD align=right width=78 height=19>0.71</TD></TR> <TR> <TD width=122 height=19>Diamond</TD> <TD align=right width=78 height=19>0.50</TD></TR> <TR> <TD width=122 height=19>Iron / Steel</TD> <TD align=right width=78 height=19>0.45</TD></TR> <TR> <TD width=122 =#cae4ff height=19>Copper</TD> <TD align=right width=78 =#cae4ff height=19>0.39</TD></TR> <TR> <TD width=122 height=19>Silver</TD> <TD align=right width=78 height=19>0.23</TD></TR> <TR> <TD width=122 height=19>Lead</TD> <TD align=right width=78 height=19>0.13</TD></TR> <TR> <TD width=122 height=19>Gold</TD> <TD align=right width=78 height=19>0.13</TD></TR></T></TABLE></CENTER></TD> <TD vAlign=top width="33%"> <DIV align=center> <CENTER> <TABLE id=Autonumber7 style="BORDER-COLLAPSE: collapse" borderColor=#111111 height=1 cellSpacing=0 cellPadding=0 width=200> <T> <TR> <TD width=200 colSpan=2 height=16> <TABLE id=Autonumber8 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%" border=1> <T> <TR> <TD width="100%" =#999999> Liquids </TD></TR></T></TABLE></TD></TR> <TR> <TD width=140 =#cae4ff height=6>Water</TD> <TD align=right width=60 =#cae4ff height=6>4.184</TD></TR> <TR> <TD width=140 height=19>Methanol</TD> <TD align=right width=60 height=19>2.55</TD></TR> <TR> <TD width=140 height=19>Ethanol</TD> <TD align=right width=60 height=19>2.48</TD></TR> <TR> <TD width=140 height=19>Glycol, Antifreeze</TD> <TD align=right width=60 height=19>2.38</TD></TR> <TR> <TD width=140 height=19>Liquid Nitrogen</TD> <TD align=right width=60 height=19>2.04</TD></TR> <TR> <TD width=140 height=19>Benzene</TD> <TD align=right width=60 height=19>1.72</TD></TR> <TR> <TD width=140 height=19>3M Flourinert FC-43</TD> <TD align=right width=60 height=19>1.47</TD></TR> <TR> <TD width=140 height=19>Freon 11</TD> <TD align=right width=60 height=19>0.87</TD></TR> <TR> <TD width=140 height=19>Mercury</TD> <TD align=right width=60 height=19>0.14</TD></TR></T></TABLE></CENTER></TD> <TD vAlign=top width="33%"> <DIV align=center> <CENTER> <TABLE id=Autonumber7 style="BORDER-COLLAPSE: collapse" borderColor=#111111 height=1 cellSpacing=0 cellPadding=0 width=200> <T> <TR> <TD width=200 =#c0c0c0 colSpan=2 height=16> <TABLE id=Autonumber8 style="BORDER-COLLAPSE: collapse" borderColor=#111111 cellSpacing=0 cellPadding=0 width="100%" border=1> <T> <TR> <TD width="100%" =#999999> Gases </TD></TR></T></TABLE></TD></TR> <TR> <TD width=122 height=6>Hydrogen</TD> <TD align=right width=78 height=6>14.32</TD></TR> <TR> <TD width=122 height=19>Helium</TD> <TD align=right width=78 height=19>5.23</TD></TR> <TR> <TD width=122 height=19>Steam (at 110<SUP>o</SUP>C)</TD> <TD align=right width=78 height=19>1.97</TD></TR> <TR> <TD width=122 height=19>Nitrogen</TD> <TD align=right width=78 height=19>1.04</TD></TR> <TR> <TD width=122 =#cae4ff height=19>Air (at 100<SUP>o</SUP>C)</TD> <TD align=right width=78 =#cae4ff height=19>1.0</TD></TR> <TR> <TD width=122 height=19>Oxygen</TD> <TD align=right width=78 height=19>0.91</TD></TR></T></TABLE></CENTER></TD></TR></T></TABLE> What do all of these numbers mean in a liquid cooling system? The above thermal conductivity shows why copper is the preferred cold plate material for cooling systems. It is extremely close to silver in performance, but only 1/6 the cost. Like most metals however, copper doesn't hold heat for very long-- it needs to be absorbed by something else. The specific heat capacities show water to be the best liquid for holding heat. Practically, it is also the best for transferring it. This would indicate the ideal configuration is to use copper to transfer heat from the processor, and to use water to absorb and move away the heat. Although there are many other factors involved, here you have the basic foundation of a liquid cooling system. Bruce

Unless your engine and cooling systemare made ofthesamehigh quality stainless steel DO NOT ADD A SALT TO THE COOLANT. Bruce

I think it is important to understand that themost effective'coolant' is pure water. Glycol is added to reduce the freezing temperature of the coolant. But glycol also reduces the efficiency of the water as a coolant. Other additives areused to provide inhibitors to electolysis. These also reduce the effectiveness of the water as a coolant. Cooling systems are pressurised to increase the boiling temperature of water. The answer is to use water with the minimum of glycol and inhibitors to provide the required protection. Difficult to determine I know, but if these facts arekept in mind you willcreatethe most effective coolant for each application. Bruce