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Viewing 25 posts - 226 through 250 (of 619 total)
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  • in reply to: can someone explain batteries to me? #49376
    trash
    Participant
    • Posts: 651

    Sorry guys, hadn’t noticed this thread.

    The AMP HOUR rating is just a unit of capacity.
    Sort of like saying I have a 20 litre fuel tank or a 50 litre fuel tank.

    It simply means that the battery can supply
    (example 800mAh) Can supply 800mA for one hour,
    or 400mA for two hours, or 100mA for eight hours.

    Of course it isn’t a perfect world, and you have to remember that the voltage of the battery is going to decline over that same period, this is going to effect how much current is going to be supplied.

    You will definately want to have a look at the battery university.

    http://www.batteryuniversity.com (I think that’s the correct URL).

    Anyhow… one of the biggest factors you will want to consider is INTERNAL RESISTANCE of the battery. When this is the same as the resistance of the load (the motor) then you have MAXIMUM POWER TRANSFER. This means the battery is supplying as much current as physically possible
    to the load. 100% it don’t get any better than that.

    There are a few other things to look at like power to weight ratio’s etc.

    in reply to: Attempting to SMASH through the 75km/h barrier!!!! #49349
    trash
    Participant
    • Posts: 651

    ….. I’m picturing the scene in the car park from “back to the future”….

    ^^^^^^^^^^^^^^^^^^^^^^^^^^
    ^^^^^^^^^^^^^^^^^^^^^^^^^^

    Have you got a flux capacitor installed in your Z yet ?

    in reply to: Aircraft #49348
    trash
    Participant
    • Posts: 651

    BONSAI !!!!

    I often wondered why the kamakazi are portrayed as yelling out the name of a small tree as they
    hurtle themselves into the side of a ship.

    in reply to: We’re Moving! #37500
    trash
    Participant
    • Posts: 651

    Oh no, we’ve forgotten to tell the DNS where we’re going !!! 🙂

    in reply to: Aircraft #49309
    trash
    Participant
    • Posts: 651

    Interesting. looks a lot like a yellowbee ?

    in reply to: Aircraft #49301
    trash
    Participant
    • Posts: 651

    will have to check them out.
    got a photo of it ?

    in reply to: For those of us in sydney??? #37709
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    Participant
    • Posts: 651

    sorry dgs… had a shocker weekend when I said I’d be there. I spent 99% of my weekend on the floor with a monster headache and I hadn’t read this thread until now. Just drop me a PM when you going to be around. I have some things already planned for tomorrow, but I might be able to get some time in there somewhere. 🙂

    in reply to: Aircraft #49283
    trash
    Participant
    • Posts: 651

    I’ll try and find his number and give him a call for ya. Don’t forget to mention Ausmicro …the more a dealer knows that this site is responsible, the more likely they are to help support it.
    I wouldn’t worry to much about the landing gear. Most of the guys that I fly with that have outlaws just leave the landing gear off.
    I do the same on my dragonfly.
    I’m sure he can get them and I know he has spare props.
    I’ll find you a phone number later. 🙂

    in reply to: Aircraft #49277
    trash
    Participant
    • Posts: 651

    Sounds like a dodgy fly by night operation !

    Your prop shouldn’t haven’t been too hard to find.
    There is a guy up here in Penrith that stocks all the parts for these sort of planes. Next time I go out there I want to see if I can talk him into considering sponsoring ausmicro.

    in reply to: Aircraft #49267
    trash
    Participant
    • Posts: 651

    hehehe… take a number and stand in line for the control knob on the wind 🙂
    Chris is a really good pilot, and one of the better instructors. He just doesn’t put much priority on teaching as other instructors do.
    You will enjoy yourself… know what it’s like to be a bird 🙂

    in reply to: Aircraft #49265
    trash
    Participant
    • Posts: 651

    Just listening to the ATIS this arvo…

    “wind 020, 15 to 20 knots” Good wind, wrong direction again for you Talldude… no hang gliding today 🙁

    Next two days are going to be worse. NW tomorrow swinging to SW with thundrstorms late in the arvo.
    Thursday or Friday will probably be your day … should be moderate SE winds then.

    in reply to: Aircraft #49264
    trash
    Participant
    • Posts: 651

    Check the ballance on your outlaw… they are often tail heavy. A little bit of bluetac in the nose fixes the problem. You’ll know if you outlaw is unbalance if it swoops a lot.

    in reply to: melbourne meetup, the aftermath……. #37842
    trash
    Participant
    • Posts: 651

    Can we get some pixelation for the photo’s ?
    Those pictures are scarey ! 🙂

    in reply to: what is the best tank out there? #37844
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    Participant
    • Posts: 651

    I have me 3 digi-Q’s. They’re fun… they’d be even more fun if they were the new steerable turret models. They are really a table top tank, no good for the carpet.

    in reply to: Aircraft #49262
    trash
    Participant
    • Posts: 651

    yep, the outlaw is about 3 times the size of the mirage. It’s sluggish compared to the mirage.
    Actually, the mirage is lightening fast, the outlaw is normal response.
    If you check somewhere back in this thread I think I mentiond how each performs.

    The dragon fly is a my personal choice of the three planes. It glides well, and is rather stable. The yellow bee is pretty similar just a little more unstable in normal flight.

    The mirage, mine lasts a bit longer than 1 minute. I used to get about 4 or 5 minutes out of a flight, a little longer if I climbed into the lift. I guess the longest flight I’ve done with a mirage would be 10-15 minutes. Those little batteries don’t have much left when you get to the bottom of their charge.

    Welcome to the wonderful world of meterology folks. Or like I think they should have on the nightly news ….. WHEEL OF WEATHER !!!!

    tonight we’ll spin the wheel and tomorrow’s weather will beeeee………………….sunny !

    If you get to a site and it’s too windy …
    pack up and go home. It’s just a simple faccet of flying. You know you’re going to break something if you try to fly.

    Such is the case with Stanwell Park Talldude…
    Anything more than an easterly and it’s not flyable, it’s not worth even trying and I have seen some fools try. (ambulance arrived soon after.)

    You can ring the ATIS at sydney airport..
    02 9667 9810 … you want wind from about 100 to 180 windspeed about 5-15 knots not gusting more than 5 knots above maximum.

    15 knots at 130 degrees is ideal day 🙂

    in reply to: Aircraft #49254
    trash
    Participant
    • Posts: 651

    Updated the Mirage and A40 in the same picture.
    sorry for the delay.
    http://community.webshots.com/album/92999857CtGlDi

    in reply to: Aircraft #49253
    trash
    Participant
    • Posts: 651

    Yep, Chris Boyce, was my instructor.

    It’s different for everybody, some people learn quicker than others. Generally it is about 10 days worth of training.

    2 days of running around in a paddock with the glider on your back. Teaches you how to handle the glider and basically how to take off correctly. You’ll also get about 2 or 3 tandem flights to learn handling, turbulance, and flight patterns at stanwell.

    Another 2 to 3 days doing short glides of a small hill. (most instructors down there use austimeer).
    That’s the first you get your feet off the ground.
    It’s tiring and exhausting walking up and down the hill. When you can fly perfectly on these short glides land on a designated spot, your ready
    for the big hill.

    The instructor will have a radio on your helmet to give you some instructions of when to make turns.. the rest is pretty much up to you.
    First flight will be off the hill, down the cliff face, turn and land.
    You’ll do a few more of these each time with a few more turns on the hill before head down to land. Finally you be soaring along the front of the hill and each time you fly, the instructor will be giving you less guidence. Eventually you’ll know when a good time to land is and you’ll have developed good habits.
    Finally you’ll do the 30 question idiot test and you’ll be free to fly anywhere anytime.
    (weather and CAO’s permitted of course).

    If you do decide you like it…. pick you instructor carefully, stanwell park instructors tend to put a lot of effort in doing tandems rather than teaching their students. The weather is always a factor.

    Yep I still fly.. both hang glider and paraglider.
    I haven’t flown stanwell for a while because of some stupid rules that they have now, but that won’t bother you.

    in reply to: Aircraft #49233
    trash
    Participant
    • Posts: 651

    I take it is at stanwell ? Who’s the instructor ?
    Look for a day with a good to strong SE breeze.

    I haven’t done a tandem since I learn to fly.
    If you’re thinking of learning to fly, tell them so that you get some hands on flying. Most of the good tandem pilots do it as a matter of advertising and fun. People kick a thrill out of knowing that it is so easy, even they can do it.
    🙂

    in reply to: no such thing as an off-road ferrari! until… #37974
    trash
    Participant
    • Posts: 651

    Somewhere in my travels I know I’ve seen a real life version of that. I just can’t remeber where.
    (must have been USA) 🙂

    in reply to: Aircraft #49227
    trash
    Participant
    • Posts: 651

    3-4am !! Good time to fly, no wind, but not many thermals at that time of the night 🙂

    I guess if you have enough light to see it’s ok.
    LED’s tend to be heavy with batteries to power them. Even with lithiums. On bigger planes it would be a sinch, but the mirage comes into the
    ‘femtolight’ catagory :-).
    Even those fishing glowsticks are too heavy and not bright enough.

    I wouldn’t expect there to be a lot of 49Mhz interference anywhere in Australia, except from other radio control stuff. If you really wanted to extend the range, you could buy a 6m (six metre) linear amplifier and use it. They’re a ham radio thing and would set you back a few dollars.
    Slightly illegal, but I’m not one to rain on parades 🙂

    Same goes for 27Mhz, it’s very easy to find amplifiers for that band. 27.145 is a majorly noisey frequency. ISM band. ISM bands are the garbage dumps of radio !

    Yep, a cheap hang glider starts at $300 and they go up in price from there. A $300 “Mars” glider is one of the first of the ‘safe’ hang gliders.
    They fly like a house brick, so if you own one you learn how to fly the hard way. You almost have to flap your arms to stay in the air.
    Other better performing ‘training’ style gliders
    now sell for about $500-$1200. You can pick up a good intermediate for about $1000-$2500
    Most advanced gliders are above that and a brand new novice ‘floater’ style glider is about $4500.
    The top end gliders are about $15000. ouch !
    Hang gliders have a good lifespan. Paragliders
    are a bit more limited lifespan and cost about $2000-6000 with all the gear.

    in reply to: Aircraft #49221
    trash
    Participant
    • Posts: 651

    Arrgghh !!! 2 cells will make it worse !!!
    Don’t do it !!! Push the cells as far forward
    in the bay, and you need to clip the two slots on the elevators and bent them down just slightly.
    You mirage will then fly like an eagle !
    I know these planes well 🙂

    I think you PM went astray leonli ? got 2 today, but none from you ?

    I’m not sure how you do some of these things talldude. I haven’t been able to fly my A40 out of range deliberately while I can still see it.
    They say the range is 300m. (1000ft) That is REALLY high. Most football fields are 100m long
    and that is heaps of space !
    Oh your head is way way way up there in the clouds. You need to upgrade to a bigger plane, with less power in the motors.
    Might I suggest on of these ?

    http://community.webshots.com/photo/95528914/108586288zhsupY

    They’re easy to fly and you can pick an older second hand model up for a cheap as $300.

    in reply to: Aircraft #49213
    trash
    Participant
    • Posts: 651

    Yep, I can get the planes by themselves.
    You know how much the wings cost, the rest won’t cost much more.

    I could tell you how to disable the electric fence, but it’s conected to an alarm and well, the security guard won’t be far away. I could think of several other options, but by far the best is just turn up at 6am on monday with a six pack of VB under each arm. Builders are thirsty people and easily bribed. (remeber the BLF ?)

    As your you flying… you didn’t pay much attention in History at school did you ??

    I tell ya a little story.
    There is an island in the Mederteranian called Crete. There was a fella that lived there called
    Minos. He later became King of the place. King Minos had a pet monster called the Minataur.
    (The local people were a bit Ovine crazy, and I suspect a few of them got a bit intermate with some of the local livestock after a heavy night on the Knossos vino. But that’s another story)
    Anyhow, Minos needed a place to keep his pet monster, he had a bad temper and aparently a taste for human flesh. He had a thing called the Labirynth built to keep both his Minataur and his enemies busy. (they didn’t have TV back then).

    So he had a bloke named Daedalus and his son Icarus build the sucker. Minos was unimpressed with their shoddy work. (they forgot the statue with the water fountain!) so he had them imprisoned in a tower where he figured they wouldn’t bother him ever again with their appauling taste.

    With lots of time on their hands, they went a bit stir crazy. I suspect the mound on the walls that they had been eating led them to believe they could fly. (another story).

    Anyhow, after collecting enough pidgeons, they soon had enough feathers to think they could fly.
    They stuck them on each other with wax. (I personally would have gone they 5 minute epoxy)

    Daedalus was an expert at whacky stunts and warned his son about flying. Don’t fly close to the water and don’t fly close to the sun because the wax would melt.

    I suspect that if Icarus lived today, he’d get sucked out of a 747 when his old man told him not to play with the lever on the door !!

    I do suspect the Icarus was reincarnated flys a paraglider these days. I’ve seen him hanging from trees around Manilla on occasions !

    Any greeks in your family ? 🙂

    in reply to: Cheap and Nasty RC helicopters??? #49201
    trash
    Participant
    • Posts: 651

    it’s probably set up so that the chopper flys fordward slowly. The second channel controls tail rotor. That you whichever way you point the chopper, it flys in that general dirrection.
    Pretty simple stuff.

    in reply to: Aircraft #49199
    trash
    Participant
    • Posts: 651

    Adiabatic lift ???
    Do you mean Anabatic as opposed to Catabatic ?
    I did write a thing on soaring in the “Flight School” It’s releated to flying micro planes in thermals. If you want to know about the bigger thermals up higher, I can write something about them for entertainment purposes 🙂

    I’m not sure superglue is so good for foam PH.
    5 Minute epoxy is your friend. Straighten out the crumpled foam piece and use a nice dob of epoxy.

    Smooth it out with your fingers. Remember that the leading edge and the top surface are to be a smooth as possible. Try keep the weight to a minimum.

    in reply to: Cheap and Nasty RC helicopters??? #49195
    trash
    Participant
    • Posts: 651

    $100 …. god damn even bigW is a ripoff sometimes. Uncle Pete had them for $180.
    (Jed where’s my shotgun?)

    They cost about $20 in HK and wouldn’t cost much more to get them here. I thought they were rather lame when I first saw them. Just up and down control, and I haven’t bought one.

    The UFO that I have on the other hand, is the same sort of 1ch RC system, but it looks cool.
    Especially at night when I take it out and freak out friend’s neighbours.
    I am keen to see a steerable version made.

    The helicopters aren’t worth it for that price.
    And a real 4ch will take you some time to learn to fly. They’re harder to fly than a real chopper, and I often think just as expensive. 🙂

Viewing 25 posts - 226 through 250 (of 619 total)