Re: [RCSE] 6G receivers with RANGE!
I hope my speculation is wrong. The way its available channel partitions is not 20kHz per RF channel. My interpretation to that is a system which demands a compatible system in safe operation. Question to ask before committing an order is this. Will it survive a 2nd and/or third Tx operating at +/-20kHz adjacent to it? YK Chan Seattle - Original Message - From: Rodger Hamer [EMAIL PROTECTED] To: Scobie Puchtler or Sarah Felstiner [EMAIL PROTECTED]; Karlton Spindle [EMAIL PROTECTED]; RCSE [EMAIL PROTECTED] Sent: Saturday, July 08, 2000 7:28 AM Subject: Re: [RCSE] 6G receivers with RANGE! And how about flying with others and safety from being shot down RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Ferrite Chokes for long servo leads?
Since, experimenting with 5C is much easier to proof the direction of the root cause. I would strongly recommend us to rule out 5C before we commit to ferrite. Does that make sense? YK RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] speed 480 gearbox
Have we forgotten gear box efficiency factor as associate parameter? YK - Original Message - From: Mike Bailey [EMAIL PROTECTED] To: rcse [EMAIL PROTECTED] Sent: Tuesday, June 20, 2000 6:34 PM Subject: Re: [RCSE] speed 480 gearbox Does some one have motocalc? Could you run a 480 motor on 7 and 8 cells 2.3:1 geared. 7x6, 8x6 or other prop. Thanks. - Original Message - From: Karlton Spindle [EMAIL PROTECTED] To: Mike Bailey [EMAIL PROTECTED] Sent: Tuesday, June 20, 2000 8:46 PM Subject: Re: [RCSE] speed 480 gearbox The 480s we sell have the same shaft as the 400. I do not have any of that data the ratio is 2.3:1 with that you can do the calculations based on the data from the motor you have. The permax 480 2.4 mm shaft 92g weight 6-8 cells No-load speed: 17,000 rpm Max current drain: 10A (4 min) Max current drain 12A (1 min) max input power 86 W Smooth Sailing, Karlton Spindle Http://www.MultiplexRC.com - Original Message - From: Mike Bailey [EMAIL PROTECTED] To: Karlton Spindle [EMAIL PROTECTED] Sent: Tuesday, June 20, 2000 6:15 PM Subject: Re: [RCSE] speed 480 gearbox The 480 that I have has a larger shaft than the 400 that I have. Does this gearbox have a gear that will fit the larger 480 shaft. Do you have any performance data for this gearbox? # of cells on which motor makes so much thrust. - Original Message - From: Karlton Spindle [EMAIL PROTECTED] To: Giuseppe Ghisleri [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Tuesday, June 20, 2000 12:13 PM Subject: Re: [RCSE] speed 480 gearbox In stock Part # 33 2690 (works with 400 and 480) Ratio 2,3:1 $14.61 Smooth Sailing, Karlton Spindle Http://www.MultiplexRC.com - Original Message - From: Giuseppe Ghisleri [EMAIL PROTECTED] To: RCSE [EMAIL PROTECTED] Sent: Monday, June 19, 2000 11:24 PM Subject: Re: [RCSE] speed 480 gearbox Mike Bailey wrote: Does anyone know where I can get a speed 480 gearbox for less than $40.00 US. Ask to [EMAIL PROTECTED] I think he could help you. Beppe 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-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] Where to get a 1100 mah pack
Let me add something to the subject. Higher supply voltage: The bridge transistors that pass on battery current to our servo motor will turn on much harder at higher supply voltage that pass on those would be loosed energy in heating them back to the benefit of the motor. We have an electrical efficiency appreciation. Switching power transistor at a sizeable load are selected by sustainable power dissipation Pd at ambient T, allowable saturation voltage (lower the better) and current gain. In a price world survival the fittest, cost will drive the gain, size and Pd down to a point where nothing is operating optimal when design is done, un/intentionally. High saturation voltage translate to loss of motor input voltage. To make things worse, a lower than normal supply voltage will starve the drive current into these transistors making their saturation voltage goes higher than marginal that results in even lower input voltage at the poor motor. Due to the effect of drive current and ON resistance is much higher as a result of lowering the supply voltage, light duty plane that only need low fractional of available servo power will benefit from electrical duration. The duration gain is out of starving the servo motor voltage down to a marginal point. However, there is a limit down that path. Since, each motor has its permanent field that each motor must first over come before honoring their duty. Such magnetic field plus servo load in flight can stall our servo motor as those low voltages. So between endurance and stall rpm, there is a "sweet" sport one can go about. That may opens up an area of interest in finding such sweet sport. Going from 4C to 3 or 2C is not for big bird and yet weight saving from battery is not what we care first either. What is left is our HLG where weight is paramount can we find enough incentives to risk before a near stall servo in operation. When a servo stall, any more/less mAh remains in battery will not matter any more. I hope we do not mixed between going from 4C to 5C and from 4C to 3 or 2C of the same hardware. Going down will risk motor stall but gain in duration by starving the "worker" servo. Going up in C can mean higher available watt-hour or Wh and up in efficiency will the duration increase as well. I am glad that Tord was not close to me before I finished that final paragraph. :-) or I may not live long enough to finish my writing. YK Chan Seattle - Original Message - From: Karlton Spindle [EMAIL PROTECTED] To: Werner, Jason [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Tuesday, June 20, 2000 9:51 AM Subject: Re: [RCSE] Where to get a 1100 mah pack LOL! That Emory! He went up and down telling me I HAD to use the voltage regulator!! Arg it will not hurt and they work great with the MPX voltage monitor switch :) Smooth Sailing, Karlton Spindle Http://www.MultiplexRC.com - Original Message - From: Werner, Jason [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 19, 2000 1:47 PM Subject: RE: [RCSE] Where to get a 1100 mah pack Karlton, You know I hate disagreeing with you! But you do NOT need a voltage regulator for the duralite packs. Yes they are 6v packs (2 cells) and run almost 6.9 v when fully charged. But this is fine for almost every every RC part we have. The only problem one was an old Futaba 7 channel PCM rx that would only use a max of 6 V. All other RC equipment is rated up to 7+ volts. I use 2 480mah cells in my HLGs for even better performance at the same weight as a 4 cell 110mah nicad pack! yes you have to use the charger supplied. And you also CANNOT run the batteries down past a certain voltage. If you do then you have a burnt out pack that is not even good as a paperweight because the don't weight enough! The charger is a 12V charger and works great. Plug in and when the light goes off it is fully charged. no messing up the pack and no overcharging situations! I have used Duralites for 4 years now. Emory, the importer into the USA, gets in the 800mah cells and should have another shipment soon (like 25,000+ cells!). The only disadvantage in reality is the 2A per cell max discharge rate. Exceed it and they are toast. But to get higher current rates you double up. So a 1600 mah pack has a 4A rate (2 pairs), a 2400 mah pack is 6 A (3 pairs), etc... A 1600mah pack is about the same size as a 500mah 4.8 v nicad and a litle lighter. Jason Werner -Original Message- From: Karlton Spindle [mailto:[EMAIL PROTECTED]] Sent: Monday, June 19, 2000 10:21 AM To: Orbitone; soaring exchange Subject: Re: [RCSE] Where to get a 1100 mah pack Have you guys tried DUTALIGHT packs I am amazed at how light they are disadvantage is you HAVE to have a voltage regulator and a special charger but the weight savings is truly awesome! http://www.performanceprod.com/ I just picked up some 1600mil packs they are less then 1?2 the
Re: [RCSE] Antenna Problems on Stylus
That can be fixed with a 2" jumper cable one side with eye slug and other with C clip. The C clip has inside diameter much smaller than bottom section of telescopic, while the eye slug will be pressed contact to the source at the mounting point inside the housing. Hope that helps. You may us any replacement antenna of any diameter telescopic but length must be stock compatible. Hope that help. YK Chan - Original Message - From: Terry Throop [EMAIL PROTECTED] To: [RCSE] [EMAIL PROTECTED] Sent: Tuesday, June 20, 2000 9:54 PM Subject: [RCSE] Antenna Problems on Stylus I have been having problems with antennas for Stylus transmitters. The brass insert at the bottom of the antenna breaks loose so the antenna won't tighten down on top of the transmitter. This is the second antenna in about three months that this happened to. Three questions: 1) Anybody else been having this problem? 2) Is there a loss of signal because the antenna isn't completely "solid?" Talking to Airtronics, they feel that this is a "problem", but then again at $20 per antenna I would always classify this as a "problem." 3) Can the antenna be soldered and be a "better" antenna? TIA Terry Throop 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] Great Moments in Physics
Tom, I like your story. I will wait and see who cannot tolerate some distractions like that. When I see one, I will place them at the same side as the physics professor's side. :-) YK Chan p.s. we apply physics often enough in aerodynamics, hardly any distractions. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] full-size wing vapor
Can we take a look at the water surface in that picture? SS trail effect do show up at the water surface too. YK - Original Message - From: Gordon Cottrill [EMAIL PROTECTED] To: Ciurpita, Greg [EMAIL PROTECTED] Cc: 'RCSE' [EMAIL PROTECTED] Sent: Sunday, June 04, 2000 7:23 PM Subject: Re: [RCSE] full-size wing vapor I see as I have just tuned back in, that this thread is still running, so I will add my two cents once again. Greg, you are wrong in thinking that planes do not go super sonic during a low level fly-by in front of a crew, as I have witnessed this on many occasions when I was stationed aboard the JFK. in 1968-1970 I now work at the former Navel Air Test Center at Patuxent River MD. where going SS was an every day thing until too many windows were shattered and now we only do it out over the ocean. Don't confuse a vapor trail with the one shown in the photo of the F-18 as they are two different events, caused by different circumstances. I do believe the F-18 is in the process of going SS. I see vapor trails coming off my cameras on the underside of the F-18s and F-14s I work on every day during weapons separations. This happens at speeds far lower then Mk1. Now don't get me wrong, I'm not an expert at this, but I did stay at a Holiday Inn Express last night. Cheers :-) Gordon. "Ciurpita, Greg" wrote: i doubt that the fly-by in the mpeg was even near super-sonic that close to the ground and crew. i live in new jersey, right along the northeast corridor. at times, i get to see airliners fly overhead every 5 minutes. lately i've begun noticing vapor clouds forming behind the wings in certain spots in the air. yesterday, i saw this for sure, as a plane flew directly overhead and relatively low. i could see a vapor trail, maybe 10% of the wing chord behind the wing. obviously, i can't see if it forms above the wing. what is this, and what is its cause? Gregory Ciurpita Lucent Technologies, Bell Laboratories Room 1N436, Crawford Corner Road, Homdel NJ 07733 (732) 949-5771 [EMAIL PROTECTED] "Good programs work. Great programs are easy to debug!" 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-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Stuck in the tallest tree
Is there a fire chief around who enjoy rescue more than just human in distress? YK - Original Message - From: Pat McCleave [EMAIL PROTECTED] To: Bill Rose Haymaker [EMAIL PROTECTED]; RCSE [EMAIL PROTECTED] Sent: Sunday, June 04, 2000 3:06 PM Subject: Re: [RCSE] Stuck in the tallest tree Dose anyone have experience getting a H/L out of really tall trees? Bill, At a recent HLG contest I was unfortunate enough to land my new Spectre in our local GET (glider eating tree). I could see that the plane was just barely haning up there so I started moving the elevator and rudder stick back and forth as little gust of wind hit the plane and surre enough the tree let go of the glider in a nice nose down attitude and after a short dive away the glider flew. I tried to convince the other contestants that the plane was just resting and that I should be able to continue my flight from where it left off but they would not buy it. The darn tree cost me the contest but at least it did not get to keep my glider. See Ya, Pat McCleave Wichita, KS 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] Stuck in the tallest tree
Is there any balloon that has pay load twice a glider? Kit it with a hanging fish hook up there when the wind direction is on the same side of the tree where the glider is. YK - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, June 04, 2000 4:55 PM Subject: [RCSE] Stuck in the tallest tree Cut the branch off with a laser - all hand launchers seem to have one nowadays. sorry, I couldn't help myself - Rob Glover Dose anyone have experience getting a H/L out of really tall trees? 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] Re: antenna wire size
Mark, If you follow my early post close enough, you may find that (0.01 to 1) to (0.001 to 1) dia to length ratio is the range I would use comfortably. Not only that too small dia. is bad for band selectivity, it is far too fragile in this harsh environment. If copper tape is used, width to length will be take into the ratio, instead of copper thickness. Let me know if that address your concern? YK in Seattle - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, May 28, 2000 6:16 PM Subject: [RCSE] Re: antenna wire size In a message dated 00-05-28 13:58:04 EDT, [EMAIL PROTECTED] writes: Wire size is always put in relationship to its wave length 0.01:1 is a comfortable ratio. 0.001:1 may cause a mild concern of bandwidth. **massive snip of gobbledygook.. Y.K., thanks for the help, how about usable info? For 72 mhz and 39" antenna, how thick or thin may the wire be? Mark (cut the shit) Navarre - 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] packing tape as hinge tape
It has been a common knowledge for RC fans in UK and Canada that one type of tape is also good in hinge tape application. It is Waterproof and durable which is normally applied / supplied in the medical industry. I do not know the trade name in the US, but it is labeled as "Blenderm" First Aid Dressing Tape. I have tried it and I like it. _YK in Seattle - Original Message - From: Ciurpita, Greg [EMAIL PROTECTED] To: 'RCSE' [EMAIL PROTECTED] Sent: Saturday, May 27, 2000 5:25 AM Subject: [RCSE] packing tape as hinge tape i picked up some of this clear 2" wide 3m packing tape and used it as hinge tape on the DAW 2m 1-26 i just slapped together. it seems strong, but i can see how if it gets cut, it will easily tear. what are the qualities of a good hinge tape? Gregory Ciurpita Lucent Technologies, Bell Laboratories Room 1N436, Crawford Corner Road, Homdel NJ 07733 (732) 949-5771 [EMAIL PROTECTED] "Good programs work. Great programs are easy to debug!" 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] swapping JR Tx crystals
Let me add to that. FCC care for emissions, any emissions that falls within the FCC bible. That include Rx emissions of a pre-approved radio product. Any RF Rx product that has one or more oscillators is potentially harmful until proven safe. Once proven safe, changing Xtals in Rx beyond its factor specifications (in theory) should not cause FCC concern but may cause Rx frequency offset. A Rx with offset frequency is a concern shared by the insurance company, and thus pilots who want to swap in non-standard Xtal. -YK in Seattle - Original Message - From: Graham [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, May 27, 2000 7:23 AM Subject: Re: [RCSE] swapping JR Tx crystals Generally speaking, transmitters traditionally, at least in recent history, have been the only radio devices that needed to be licenced while recievers were not. I would think that swapping is not FCC approved as you would in all probability your transmitter would no longer be properly tuned to the channel of your xtal and would be in violation of being off frequency as well interference on adjacent channels and possibly spurious signals out of band (ie harmonics). So, to swap xtals in transmitters you would need to have the transmitter adjusted to its new frequency which would have to be done in a radio by someone with the proper equipment cheers, Graham At 08:29 AM 5/27/00 -0400, you wrote: when i needed a new flight pack, i figured that getting a JR 421 radio would at least provide a 2nd Tx battery pack, as well as, a 2nd set of crystals. i've been swapping Rx crystals, but thought i read that the JR transmitters are not FCC approved to allow field swapping of their crystals. is this true, and if so, what would it take to swap the Tx crystals? Gregory Ciurpita Lucent Technologies, Bell Laboratories Room 1N436, Crawford Corner Road, Homdel NJ 07733 (732) 949-5771 [EMAIL PROTECTED] "Good programs work. Great programs are easy to debug!" RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] - - Graham[EMAIL PROTECTED] Are the shadows there for me to find, or placed there by my searching mind. When I reach and find them gone, was I right or was I wrong? - -- 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] antenna wire size
Wire size is always put in relationship to its wave length 0.01:1 is a comfortable ratio. 0.001:1 may cause a mild concern of bandwidth. That will generate band selectivity and can cause some channel are more effective than another across the RC band. Over all wire size variation can cause much less impact than wire length (0.25wave on groundplane, 0.5wave air borne). Once again, we are using a ground base antenna in air borne applications that is electrically incorrect. I use 0.5wave across my 2m planes, or 0.5wave in "J" tips for my HLG. If CF is inevitable, we may apply "skin effect" on antenna theory. In principle, imagine a CF boom inside an aluminum tube-antenna. Majority of RF current flow at the outside surface of metal tube, that effectively making the CF transparent. knowing that the tail boom has a high aspect ratio, a practice 2nd best to the outside tube may be considered. That is to split a single wire into two equal length and run it outside the CF in all parallel arrangement. We would expect the RF one each paralleling wire to repel one another and concentrated at the far outer portion avoiding "seeing" the CF in between them. Any metal lengths or push rod MUST carry signal current "in phase" with the antenna current. That can be met by treating them in same fashion as a member of the team of split wires, except it stay at the core. However, all lengths must be equal to comply the "in phase" requirement. Aluminum strip with adhesive is one idea that comes into my mind at this point (only if you can make reliable electrical contact at all times without soldering connection). Copper although is solderable, some may think that is too heavy. I would use copper. When ever affordable, use 4 split parallel wire can produce improved result. The split wire ending near stabilizer need not be electrically connected together, but wire tips should not flare/diverge from one another by more than 0.05 of full wire "length". Dealers and vendor, can pay attention to this potential marketing opportunity, for "thin" copper foils with adhesive. :-). Let me know if I have missed any relevant points. _YK in Seattle - Original Message - From: Antonio Martinez [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, May 27, 2000 12:41 PM Subject: [RCSE] antenna wire size I know this has been addressed in the past - but I wasn't paying attention (sorry YK)... Does the size of antenna wire matter, or just the length. I have been using a pushrod as the antenna in my HL, but I'd like to use CF rods instead. This means I need a bona fide antenna. I was hoping to use wirewrap material (very fine dia copper wire) glued onto the fuse exterior. Any antenna engineers out there? TIA a 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] Experience with cellular phones ...
I presume Tord's phone operates under GSM system. That maximum peak power in principle is 3X of what is in most cell phone in the US. The legal RC channel frequency is about half of what is in the US. Those are the two differences. The best way is to ground range or bench test with the cell phone turned on from time to time. The next time a cell phone in operation can be some one else, inadvertently. Dealing with the problem is better than running away from it. YK Chan in Seattle. - Original Message - From: Tord [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: RCSE [EMAIL PROTECTED] Sent: Wednesday, May 03, 2000 12:25 PM Subject: [RCSE] Experience with cellular phones ... Dear Ken, Just a short note on the dangers of mixing mobile phones and electric flight. I had a powered Studio 'B' Avro Vulcan in my lap, powered by a Kyosho car motor, and a 8:1 Graupner gear box and a seven cell RC2000 pack. It was not running or anything, but it was armed when I decided to make a call on phone, and as soon as I had dialed the number the engine started to run at full speed! With the tx on one side of me (it was on) and the plane in my lap I never would have thought it could run like that. Happily, for this event at least, the prop collet was loose on the shaft, so I was not damaged, just scared and puzzled. The ESC was one of those ultra-safe Gordon Tarling speed controls, that you have to arm by throttling fully up and then down before they start the motor. It had been armed, but I would never have guessed that it would run when the cellular tried to contact the nearest repeater. Further testing showed the transmitter to be totally unaffected (it was a Graupner mc-15 - a close relative to the JR computer radios) but getting the cellular's antenna close to any metal part of the rx, the wiring or the pushrods set the motor off again! This with the rubber duckie antenna on the tx in place and just two feet away! So while the tx passed with flying colours the kit-built rx did not! I guess any rx would have similar problems - glad that the tx seems OK with phones ;-)! So do turn off your cellular before playing with your models. Had this been a big model with one of my Aveoxes, god knows if I've been around now! We had 28+ C last week, pretty fair for March in Sweden! Safe flying! Tord, Sweden -- If reply difficulties - use [EMAIL PROTECTED] Tord S. Eriksson, Ovralidsg.25:5, S-422 47 Hisings Backa, Sweden 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] Walmart Transmitter Case - F3J Junior Auction!
I have attach a URL path to a place call Harborfreight. They carry aluminum case similar to the Wal-Mart Transmitter case. Costing about 12 to 13 dollars. Check it out and see if it fit your application and budget. YK Chan in Seattle - Original Message - From: Ben Diss [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, April 30, 2000 9:26 PM Subject: [RCSE] Walmart Transmitter Case - F3J Junior Auction! As you probably know, the Walmart Transmitter cases are very hard to find. I have an extra one, so following Karlton's lead I have decided to donate my extra one to the F3J Juniors. While this might not have as much monitary value as the previous auction, I hope to have better success by using eBay. So, show your support for the F3J Juniors by bidding up: http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItemitem=322094200 If this goes well, maybe we can convince Karlton to use eBay! -Ben RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Shortcut to Harbor Freight Tools.URL
[RCSE] Aluminium Carrying Case, again?
I drive by a popular machine tool retail shop call Harbor Freight (Everett, WA) and saw some cute little Aluminum Case, although I have no idea of how those in Wal-Mart looks like. These are 10X6X4 (?) price at $12.99. No sponge for shock proof inside but with soft wall lining. I am not sure it can hold two Tx. Thought you would interest. YK Chan in Seattle RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] You know your getting old when....
... your eyes cannot focus close up objects. - YK RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: Why Negative Last
Last time I did just opposite to that have caused me an alternator part and labor. I think the best way is to first isolate the auto system before we apply auto charger current a the auto battery terminals. YK Chan p.s.. I assume the battery and charger in question are auto type but model type. - Original Message - From: George Voss [EMAIL PROTECTED] To: RCSE [EMAIL PROTECTED] Sent: Monday, April 10, 2000 6:28 PM Subject: [RCSE] Re: Why Negative Last Thanks for the help. I gather from the answers then that it won't matter if I hook the negative up first when I use my 15A, 12V power source in the house since there are no fumes involved?. gv George Voss wrote: Why are we told to hook up the negative lead to a battery last, such as when hooking up our battery charger to a 12V source? gv 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] Why Negative Last
I think John got this right. That is the originating reason. YK - Original Message - From: John Ensoll [EMAIL PROTECTED] To: George Voss [EMAIL PROTECTED]; RCSE [EMAIL PROTECTED] Sent: Monday, April 10, 2000 5:55 PM Subject: RE: [RCSE] Why Negative Last High George, The reason is probably due to the recommended system on your car or truck which will have a negative earth system. If you make the positive connection last there is a danger of your spanner making contact with some other part of the car and "Bloooie" you've done a welding job! or melted your spanner. This can't happen if you make the negative connection last. Regards John RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Wal-Mart aluminum case $14.00
one thing I do not understand is if those boxes are hot cakes, what make it discontinue so soon? YK Chan in Seattle. - Original Message - From: Glenn E Eiden [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, April 02, 2000 5:59 PM Subject: Re: [RCSE] Wal-Mart aluminum case $14.00 Hi Ben: There was four in the inventory computer inventory. I never seen the fourth one, there were three in hardware and we didn't look but they thought the Fourth one was in sporting goods. If someone still needs one, call the manager at the Van Wert store. and see if they can find it. Tel 1-419-238-5438 ( SKU# 002599790603) Part Number Glenn On Sun, 02 Apr 2000 20:45:45 -0400 Ben Diss [EMAIL PROTECTED] writes: Thanks for the tip Glenn. However, at this time they're all sold, and no I didn't get all three (only two)! -Ben Glenn E Eiden wrote: Hi Dan: I found four Aluminum cases in Van Wert, Ohio at the Wal Mart store. In checking around for the aluminum cases which will hold two transmitters I found none in the two Wal Mart stores in Fort Wayne. (discontinued Item) Went over there this morning and purchased one. They had them listed for $17.43 I explained to the Ast. Manager ( the only person in the store that could find them) that most other Wal Mart stores were selling them for $14.00, but it didn't impress him a bit, he said they must have marked them for clearance. I purchased one, and there is three more over there at Van Wert if any of the Local (RCSE) members or Loft members need a two transmitter case. Glenn Eiden New Haven IN On Wed, 16 Feb 2000 20:42:56 -0800 "gardan" [EMAIL PROTECTED] writes: Someone told someone here, about aluminum case from Wal-mart. The local store found 8 in a store 1 hour away. Nice town in the foothills, senic. Made the drive worth it. Interior demension: 17 3/8" W - 12 3/8" L - 3 5/8" H (up to fiction fit 2" wavyfoam in lid.). two 2" foam pre-sliced 1/2" grid with 1" frame uncut; make for easy fitting. A micro diamond plate rough texture aluminum outside is easy to scar, but the case is durable,nice rubber lining. 4 ft. shoulder strap/pad nice . Here agian is the SKU# 002599790603 They are worth some effort. Dan 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-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: R: [RCSE] 4 vs 5 cell battery
Not silly inputs. You do not understand. Who want to pay for another (5-cell able) Rx? Do you? YK Chan in Seattle Take the RX and put it in a plane who uses a 4 cell pack. As for the plane with the 5 cell pack, use another RX who is designed for a 5 Cell pack. There are many. Of course this is only my humble opinion :) thermals Kjelli __ 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-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] 4 vs 5 cell battery
Besides going down the path for a N x 400mA of linear regulator for the first 5% from fresh charged and suffer 5.5 to 5.7V for the remaining discharge cycle, here is an alternative. You know, a fresh charged 5 cell pack can peak at 7.5V or so. This voltage cannot sustain beyond 5% into discharge and will stay marginally above 6V until 5V declaring at final discharge. If that is OK to our Futaba here, we have something that might work If we have a 550 mAH pack discharge 1.65A for one minute will leave the pack at 6V or so and a 95% of remaining capacity. There are few thing handy that can provide similar current drain. How about a free run 6V speed 400 motor? (if desired, fine adjust motor commutator timing for 1.63A sharp. A free run motor is consider as a constant current drain device under fractional change of supply voltage). A 3.66 ohm 10W resistor?. A 10W 6V light bulb? YK Chan Seattle area - Original Message - From: Erik Wikran [EMAIL PROTECTED] To: Soaring-Digest [EMAIL PROTECTED] Sent: Tuesday, March 28, 2000 2:19 PM Subject: [RCSE] 4 vs 5 cell battery I have two Futaba receivers (R138DP/R148DP) that I want to use in full house planes. I also want to use 5 cell battery packs but I am having trouble with the receivers/servos (JR3341). With a 4 cell pack every thing is acting OK but with 5 cells they are going crazy. The receivers ar rated at 4.4-6.0V but the 5 cell pack is putting out 6.7-6.9V. Is there an easy way to regulate the voltage down to a stable 6.0V? Any suggestions? BTW: I have tested it with a Hitech DC receiver and there were no problems at all on 5 cells. -- Regards Erik Wikran Tromso, Norway --- 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] ?Causes of Radio interference/glitch(long)
I second the explanation of sun spot as the cause, simply the Sun's reaction is indiscriminate to individual. I often saw loss of control with near by sheet metals, turf farm hose system and autos in parking lot ... The other popular cause is intermittent electrical connections at connectors and cable between connectors, not excluding antenna wire and telescopic antenna. In most case a follow up ground range check do not support such problem. But there is one thing in common among those cases I witnessed is that it happen more often to the 'high risk group'. Groups that practicing Rubber ducky, Metal and/or CF pushrod bundle inside fuse, CF fuse, long wing/tail servo cable without 4 cell operation and CF wing ... etc. One thing ground range check will not detect is the 'death spot' of an airborne antenna radiation pattern. The ground wave cannot discriminate any death sport or not (not sun spot :-) ). This is why I developed that "wake your plane test". In most installation the natural death spot is pointing at horizontal. There are at least one dominant but sharp death spot while the 2nd is shallow and coarse. The optimal antenna beam angle of a typical RC plane is vertical. A low flying plane give chance to the death spot and that explain a low and far plane out there is at maximum risk. ( I place my dipole span wise to eliminate that risk leaving a down wind thermal to far out) Try avoid circling at low altitude near sheet metal the size of 2 meter or its multiple. Soaring close above parking lot is a high risk act (personal injury), although there is good thermal and perhaps draw attention. YK Chan Seattle - Original Message - From: Walter Lynch [EMAIL PROTECTED] To: [RCSE] [EMAIL PROTECTED] Sent: Sunday, February 20, 2000 3:27 PM Subject: [RCSE] ?Causes of Radio interference/glitch(long) Hi all. I have been flying RC off and on since 1973. During that period, as unbelievable as it sounds, I have, except for a Rx battery lead short one time, never had any sort of a radio problem, not even a recognizable glitch. Yesterday at a fun fly I was playing around in low level lift w/my Mantis, when the plane started acting a little erratically. Since the Mantis is super sensitive to any kind of bump, bubble, etc and I fly with a rearward CG - I at first thought it was reacting to some bumpy low level air. Then all of a sudden it hung a quick diving left, heading down into the parked cars at the field- it wouldn't respond and at the last minute at about 20-30 ft I got control back and landed. I immediately put down my Tx antennae and started a range check, at which I lost control of plane at only 10 ft range. Went home, tried to duplicate problem and nothing -every thing was fine. Batteries were in the good range so I dont think it was that. Equipment used is a Vision Tx, channel 54 PPM, new Hitec RCD Rx. Only one other person I know of was on 54 and he was off, frequency control was in effect. I do have antennae run down interior of the CF boom on Mantis, which has never once caused a problem. I will now run it on the outside of boom. Could I possibly have been getting a "hit" from some thing else? Dirty Tx antennae? Maybe I need a new radio, but hope not as Vision seems to work pretty good and I am comfortable w/ its programming. Any suggestions to problem would be appreciated as I am new to radio problems. thanks, Walter 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]
