[RCSE] Re: NEW KILLER HLG
Bill You must be very careful with this type of design! I re-designed one of my skeeters to thermal from an "at rest" position on the ground and it became a big problem. When I would lay it down at the end of a flight it would take off again. Finally lost it though. Got to laying it upside down so it wouldn't fly away. One time I left it lay that way while we went for lunch and when I got back there was nothing but a hole in the ground. I'm not sure where it finally ended up but shortly after that one of the guys on the list from Australia reported seeing a glider pop out of the ground and fly away. Guess I'll have to check with Tord and see if anything has turned up in the Harbor. Denny Maize RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] That AMD CYCLONE DEAL IN SE....
At 11:59 AM 2/4/00 -0500, [EMAIL PROTECTED] wrote: I posted the information for the USA dealer, but it turns out now that I have had a chance to read the advert. that it is AMD themselves offering that special of $89.99 with carry bag. That model looks like the old Sig Samurai... 8-) Jim Downers Grove, IL ICQ 6997780 Visit my R/C Soaring Page at http://www.mcs.net/~bacuslab/soaring.html RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] For Sale: MPX 3030 tx/rx/4servos
OK, now I have converted over to using my p4000 fulltime, I can offer this wonderful 3030 to some lucky flyer. 20-ish memories 9 channels more mixers than you can throw a stick at. backup battery system for cross-country flying see www.multiplexrc.com for more specs. It's a _very_ good radio. Offered with MPX PCM rx and 4 ballraced, metal gear servos, plus a bundle of assorted useful accessories. Accepting offers around $500. tim RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Hera ball links
My Hera uses a ball link system on the ruddervators. The system is very nice, smooth, easy to hook up, etc. I have never used these before and want to know if anyone has had problems with their reliability. The only reason I have a question is that these are new to me and seem too good to be true. Mike Clancy RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Fwd: Hera ball links
Mike, I have had no problems with the elevator system at all. I did replace the pushrods with Carbon rods. I would recommend putting some cloth on the inside of the fuselage on the bottom skin beneath the stab mount. Stock, it is glued with a slurry that will crack with time. Be careful with the stab mounting bolts, as they are threaded into aluminum inserts that are bonded to the fuselage. The threads can stretch, so check your stab for rocking often. The Hera is a great flying toy, I hope you have good luck with yours. LJ
Re: [RCSE] SEALED LEAD ACID BATTERY CHARGING
- Original Message - From: "Garry Whitfield I use a 17ah sealed lead acid battery for fast charging on-field. How do I re-charge properly. Is there a battery charger for this type of battery? At this stage I charge off an ordinary overnight car charger on a low setting. Is there an peak detect system for this type of battery? Help appreciated. GARRY It sounds like what you are doing is about as good as it needs to be. Lead Acid batteries don't "peak" so a peak detecting charger won't work. The preffered method for charging LA batteries is with a constant "float" voltage instead of the constant current chargers we use for NiCd and NiMH batteries. This type of charger provides current as needed (up to its capacity or selected setting) to hold the voltage constant at about 2.3 volts per cell. As the battery charges its voltage increases. The closer it gets to the float voltage the lower the current until the current tapers off to a trickle. The car charger you are using may be doing this already. If you can rig a way to put an ammeter in series you should be able to verify this. The only likely problem could be that LA batteries don't like sustained fast charges. (So using a low setting of about 2A is good for your battery size.) Unfortunately car chargers may consider this a trickle relative to a 100AH car battery and may not drop any lower. You can check for this with an ammeter as described above or with a voltmeter. Watch the voltage as your battery charges. If it flattens out somewhere around 14v, you're fine, use it without concern. If it continues charge beyond this, you will have to keep an eye on the charge to terminate before it overcharges. Other alternatives: Hobby stores do sell 12v trickle chargers for this type of battery. I'm not a fan of this approach, however, as they provide no protection against overcharge so you may as well use your car charger. Another solution is to go to Radio Shack and get a cigarette lighter plug and a 1/2 ohm 10 watt resistor and solder up an adapter to plug your battery into the car. The resistor will keep the current from getting too high if you plug in the battery nearly dead and the car regulator will prevent overcharging. Note: do this while driving, your 17AH battery could drain your car battery if the car is stopped. Rick, RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Staggerwing drawings
Hello, Would anyone know of a web site with some decent drawings of a Beechcraft Staggerwing? They don't have to be too exact but the closer the better. Thanks in advance, Bill Swingle [EMAIL PROTECTED] Pleasanton, CA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] LEAD ACID BATTERY FIELD CHARGING
Yes there are specialized chargers for small lead acid batteries. I bought a Lead-Acid gel-cell for powering a Sirius charger to field charging Nicads. It worked 'fantastically', at least until I got a clue. Anyway, when I got lead acid battery, I bought a special charger, explicitly for small lead acid batteries. They take a long time to juice up, and you have to keep them charged. They die quick if you let them discharge without load over the course of a year, or don't maintain them properly. If you want a successful experience with the gel cell, you may want to read up on the characteristics of lead acid batteries, they have their drawbacks. The Lead Acid charger I got I think was $20. It is just a large transformer with two LEDs, and some nominal black-box circuitry (I guess), all about a 3"x3"x2.5" case which plugged directly into the wall. Its an over-night charge. After field charging for a few months, I grew weary of it. I found a way that easier and probably more effective... I just carry a few extra fully-charged nicads for the radio and receivers. I charge and top them off with the Sirius charger in the car on the way to the field (using the lighter jack). Usually after flying the receiver and xmitter batteries aren't near fully drained. Since you haven't fully discharged the batteries, it doesn't take long to recharge them with the Sirius charger. If I have a lot of drained batteries to charge, I take em' down to the car 30-60 minutes or so before leaving. By the time I'm there I can have three or four packs fully charged for both the xmitter and receiver. To keep a jump on the recycling, I just leave an xmitter battery and receiver battery plugged into the Sirius charger in the car all the time during the flying season, and sometimes rotate them when going to the store, or mailing a letter, etc... (then capping them off before flying only takes a few minutes per battery). The Sirius goes into very (very) low drain 'conditioning mode' and the LED's flash green when the (NiCad) is topped off. Never seen the Sirius have any impact whatsoever on the car battery even when I left it plugged in and didn't drive at all for days at a time. So if you drive almost every day, no problem. Carrying a gel-cell of decent capacity and a charger to the field along with all the other gear is a hassle, because a decent capacity lead acid cell is heavy, and then breaking it out and actually using it was more trouble than its worth, especially since you can't really 'quick' charge the lead acid batteries in the way you can with NiCads, and since you have to be religious about properly maintaining a lead acid cell. Managing a single large lead acid gell-cell at home is more trouble than quick-charging a few NiCads in advance in the car, I've found. Initially you think you've got the hot setup, able to fly all day, charge in the field, but you eventually realize you're just trading off baby sitting NiCads for baby sitting your gel cell, and its not any more convenient at all. Less so, in fact. -Paul Garry Whitfield wrote: I use a 17ah sealed lead acid battery for fast charging on-field. How do I re-charge properly. Is there a battery charger for this type of battery? At this stage I charge off an ordinary overnight car charger on a low setting. Is there an peak detect system for this type of battery? Help appreciated. GARRY RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Hera ball links
Been flying mine for over a year and a half with no problems at all. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Friday, February 04, 2000 12:03 PM To: [EMAIL PROTECTED] Subject: [RCSE] Hera ball links My Hera uses a ball link system on the ruddervators. The system is very nice, smooth, easy to hook up, etc. I have never used these before and want to know if anyone has had problems with their reliability. The only reason I have a question is that these are new to me and seem too good to be true. Mike Clancy RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Liftroll.xls Question for John Hazel
Discussion in rec.models.rc.soaring usenet group reveals that enthusiastic local Liftdistribution software "experts" do not understand (at least in a satisfying intuitive way) why the "Local Cl" graph tends to peak up when local chord become narrow and decrease when local chord become large (the situation at the root of strongly tapered wings). It is clear that this is the way that Liftroll responds but it is not quite clear and intuitive why this is. Could you provide us an insight as to why Local Cl increases as local chord gets smaller (tips) and decreases when local chord is larger (root)? Does the expression that gets plotted on the Local Cl graph include local chord as a term in the denominator (thereby making the plotted expression larger when local chord is smaller)? Is there some other interesting (and intuitive) reason why the Local Cl graph has this behavior? __ Get Your Private, Free Email at http://www.hotmail.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Re: staggerwing
here ya go http://www.scaleaero.com/3vuindex.htm Brian RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] skegs on sailplanes
Mark, from Daryls excellent post to yours. I have this mental picture of you. Do you sometimes wear a pointy hat with eyeholes cut out, or a specific armband? You must be a legend in your own mind. Klaus, I, promise that I am not a member of the klan, or any other right wing conspiratorial group, just someone who is tired of political correctness and the attitude "that because America needs to get with the rest of the world attitude." The last thing I am is a legend in my own mind, just a hard working guy who enjoys to fly and anything about flying, but I am very competitive when I walk out on the field of battle. Marc Gellart, Lima, OH RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] skegs on sailplanes
In a message dated 2/4/00 4:30:56 PM Eastern Standard Time, [EMAIL PROTECTED] writes: The last thing I am is a legend in my own mind, just a hard working guy who enjoys to fly and anything about flying, but I am very competitive when I walk out on the field of battle. Gellart is a meglomaniac, totally full of himself and feels that only his way is the only way. He is a fearsome sight of a man, intimidating on the soaring field of battle. No one likes the guy. except me:-) and I enjoy the look of a vicious skeg right on the tip of a sailplane. Gordy RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
