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(mostly from the Buzzards List)
Tips for Paraglider Pilots
Click here for a great set of tips by Jérôme Daoust. Print it,
and take it with you to review it while you're waiting for the right wind.
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Moore Mountain Weather Tip
Moore Mountain works great when the High Pressure system is either
directly over (light, variable winds usually followed by wonder
winds) or has drifted off to the east and is sitting near the NC coast
or above, giving us prevailing true south winds. A front moving in will
also give us south winds (prefrontal conditions) regardless of where the
high pressure is if this front is coming from the west/north, but it CAN
be turbulent depending on how strongly the different air masses clash.
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When to expect strong turbulence
High Pressure, cloudless day during the late morning and early
afternoon, here we can usually fly until 11 am and again after 4 pm, but
it changes.... Not everyday is the same.
Low pressure is a completely different ball game, there will still be
turbulence from the instability but it makes for good thermal flying
with lift indicated by the cumulus clouds, but another danger lurks, OD
(no not too much coffee) but thunderstorms forming. Be aware and
constantly look at the sky for signs of dark, growing clouds. If in
doubt, head back down to mother earth, it's no fun not being able to
come down (do you know how to descend?) There are some good stories out
there, no need to repeat, like the latest Cross Country issue the guy
who went to 21000 feet involuntarily and tossed his reserve so he could
wrap himself in his Glider, he had only shorts on.... All documented by
his barograph.. and he walks away from it all....
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Speed bar facts
#1 Rule: Always have it hooked up when you launch, even if it's a no
wind sledride, the winds always pick up when you don't have it.
Make sure it works properly by doing a dry run sitting in your harness
on the ground with somebody holding up the risers. Watch the pulleys as
you push and see them come together for max speed.
Try it in smooth air and get used to it, it's not an emergency thing
only, experienced pilots use the speed system all the time, between
thermals, to cross sink, to beat Bill to the LZ and so on.
There is more than "on" and "off" on your bar, use only as much as you
need.
On full bar in rough air you might get a frontal collapse, let up
immediately if you feel major turbulence.
If you collapse, relax. The frontal is uncomfortable but harmless and
doesn't require much input from the pilot, the Glider will reinflate
instantly, you can stop the surge you might get with properly timed
braking (you apply the brakes as you swing back in your seat, Glider is
surging forward).
Surge control should be something you do all the time, "active flying".
Before you push on the bar make sure the lines are routed properly,
there was this guy out in AZ a few years ago who had the line wrapped
around his reserve handle and had an accidental deployment....... when
he pushed on the speed bar.
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Retrieval
When the pilot is high, radio communication seems to be easy - even running 1/4
watt with a rubber duck antenna I was able to talk to some ham radio operators
north of Durham while in the air over Lillington, NC (about 90 miles away!!). I
was amazed! Granted, this area is quite flat, so I imagine that the pilot would
have to be high enough to clear the top of whatever range you're flying from in
the mountains to be heard, especially if he's gone "over the back." One key
that can't be underestimated is the without exception, the standard antennas
that come with ham radio handhelds are all very lousy antennas (I am assuming
you guys are using the amateur bands). Diamond makes an excellent flexible whip
(a little longer than the usual duck) for about $29 and it provides much better
reception. If you're going with a mobile radio, don't just get a quickie
mag-mount antenna from radio shack if you're really going to do hunt-and-peck
retrieves - Diamond and many others make superb mobile antennas with over 5dB of
gain and these have been pretty much well worth it - I was "received" with one
about 17 miles away in New Mexico one summer, and I was transmitting with a HT
at 5 watts.
So, bottom line for easiest radio improvements:
1). communicate your possible imminent landing while still 1000' AGL (this seems
to work in the flatlands anyway).
2). Get better antennas, they're one of the cheaper ways to get much better
performance.
2.5). Keep transmissions short and intelligible: give your GPS coordinates if
you know them, and some helpful landmarks are nice but don't get too hung up on
them. The first time we flew in NM, Steve Bland told us "I'm landing right next
to the windmill, you can't miss it!" - as we drove along, we noticed that every
single ranch out there has a windmill!
3). Whoever is left to drive retrieve should keep a notebook and pencil handy
and keep update points - write down each "I'm at 1000', at North xxx, West xxx,
and scratching hard." That way, when you finally do lose communication after
the pilot has landed, if you missed the last check in or two, you can get a good
bearing on which way to go and usually pick up radio contact again. Since we
normally tow, there's almost always someone in the vehicle pulling someone else
up - take those notes and acknowledge the tranmission.
4). When searching for the lost pilot, the vehicle should keep the squelch OFF
on the radio to be able to pick up the pilot. Very annoying, but often your
first clues that you're nearing the pilot won't break squelch and if you're off
the track a bit you might go right by. Call the pilot every five miles, and
give your location also - the pilot will hear you long before you can hear
them. Then listen.
5). We always have a backup phone number (usually my work phone that goes to
voice mail). The mailbox number and password is passed out to pilots going XC
and also to those who might wind up driving. Sometimes, the retrieve crew can
also change the greeting which is kind of nice too: "Hey, if this is Brent, we
got your last message and will be within radio range by 5:30PM.
6). Cell phones were amazing: too bad New Mexico doesn't have digital coverage
yet (I guess the AT&T digital phone "kind of" worked out there, but Sprint users
had a nightmare, even in dual-mode analog transmitting. Analog coverage there
is great though, and almost everyone offers you a phone when they stop to check
you out. And almost everyone stops too: "Hi, need anything?" and better yet (or
more annoying, depending , is the "Hey man, you sure didn't get very far
today? Want some water while I go call Curt?" you get when you're within 20
miles of Crossroads Windsports! This year, almost everyone had one (7 of us
this time) and we all carried cards with each other's cell #s, ham radio
repeaters, and the VoiceMail instructions for my work number.
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Using a Timer Can Improve Battery Life
One of the failure modes in Ni-Cd cells is shorting.
While many things can contribute to shorting one of
the significant contributors is cadmium migration
through the separator where it forms a conductive
bridge, ultimately shorting the cell
Cadmium migration is a function of the time the charge
current is flowing through the battery and less a
function of the level of current. Therefore we have
found that high pulses of charge current to maintain
the charge state are better than a steady low rate
(trickle) current. This is very difficult to quantify
as their are many other factors contributing to the
life equation but improvements in battery life of 10
to 20 percent by pulse charging vs trickle are not
unrealistic.
Therefore it has been found that sustaining a pack at
the fully charged state by way of pulsing the charge
is better than an continuous trickle charge.
Some chargers employ this technique. You can do the
essentially the same thing rather simply and at a very
low cost.
Simply connect your regular wall module charger that
came with your system to an appliance timer.
Intermatic makes a good unit for around $5.00. Set the
trigger pins on the timer so that it is on for 1 hour
a day. When you return from a flying session turn the
timer wheel so that the on off triggers come up in 14
to 16 hours. Then turn the timer knob to on. This will
give your pack a full charge and then a sustaining
charge for 1 hour a day. The battery can be left in
this manner for a long time and still be maintained at
a fully charged state with minimal overcharge.
If you only use your radios for a couple of hours, you
can just set the timer so that you get 6 or 8 hrs
before you go into the 1 hr. day mode.
The system usage will vary, depending on your flying
style, how much you gab, etc.
paraphrased from an article by Reds R/C Battery Clinic
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Kiting
There is a reason in NORMAL conditions to build a wall, pull the wing
up in a reverse, STOP the wing, CHECK it out, turn, check it out
again and then go. That reasons are:
- Check the wing for twisted lines. Brake lines OK?
- Check the wing for trash in the lines. Holes, etc.
- Check that you have a FLYING wing.
- Have the wing under control and stable before you start your run.
- A few other things I have missed I'm sure.
This will prevent some of the problems we are having on launch. Not
all, We have ALL pushed launches now and then, sometimes we win,
sometimes we loose, now and then we loose big. (CHRUNCH!)
Slow down gang, it's better to have 1 good flight than 3 lousy
hurried attempts, besides, it wears me out! Choose your air to FLY
in. Even birds wait til conditions are good before they "pop" up out
of the trees!
Remember, practice kiting, PRACTICE kiting, it's "NOT just for
beginners you know!" Have you ever noticed how much kiting Chris
does? watch sometime, he does 5-15 min. most flying sessions! There
is a reason.
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Misc.
Radio frequencies: 151.6250, 151.9550, 151.9250
Weather: 162.4750 (Big Walker, Moore), 162.40 (Sauratown?)
Weather (other areas): 162.4250, 162.45, 162.50,
162.5250, 162.55
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