Re: [RCSE] 3M #853 tape
Jim, Found this link talking about various tapes. The most recommended is the 3M #845 used for book repair http://www.amadistrictii.org/cjrcc/Articles/hinge_tape.html This may have similar properties to the #853 I found this library supply company which sells the #845 http://www.vernonlibrarysupplies.com/cgi-bin/vernlib.cgi/results_prod.html?catcode=1027maincatcode=1022 At 01:08 AM 5/14/2006, Jim Laurel wrote: I bought a roll of this stuff from NSP years ago and have found many uses for it. This is a super thin polyester tape, highly resistant to tearing, highly resistant to UV, very strong. Alas, my precious roll of the stuff is almost at an end. Does anyone know where to buy it by the roll? There are many vendors online, but they are selling $600+ cases. Is this the same stuff that NSP now sells as Bonk tape? --Jim Laurel http://www.twango.com/channel.aspx?channelname=jim.soaring RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format Best Regards, Russ Light [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
RE: [RCSE] What is your favorite tool for building?
Dremel Tool That is until I got my Li-Ion battery operated unit for xmas, cordless bliss!!! My favorite tool is my hands. There are an infinite number of attachments that can connect to them to take care of any job you may have in mind. Mark __ Yahoo! DSL Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format Best Regards, Russ Light [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
[RCSE] Saving our Flying Fields - Save 60 Acres South!!!
All, The recent thread Some thoughts on AMA-it's about LAND has special significance to the soaring community in the Seattle area. Our county designated flying site, 60 Areas South, managed by the Seattle Area Soaring Society (SASS) for the past 30+ years, is now in another fight for its life with a youth soccer association which is looking to expand its facilities. You will recall a few years ago we successfully fought off a water reclamation plant on our site that was a classic case of a public official being bought by a large corporation. Currently the Lake Washington Youth Soccer Association (LWYSA) has soccer fields on 60 acres to the north of our field, we fly on 30 acres to the south with a road in between. All 90 acres is owned by King County and was purchased in 1968 using a voter ratified bond to create parks. The language of this bond is very specific about how these lands will be used and the activities of SASS and other users of our field fit this definition perfectly. About 5 years ago the LWYSA purchased adjacent farm land with full knowledge it could not be developed due to zoning restrictions which prevent farm land in this area to be used for other activities. The LWYSA believed they could through court action rezone the land which they have failed at doing and are now saddled with ~$600k of debt. In secret negotiation between the LWYSA and King County Parks the LWYSA reached an agreement where the county would get ownership of the farm land in exchange for sole ownership of the land that SASS uses. Note that they will own the land, not just be granted use of it. Unbelievably but true, tax payer purchased land will be given to a private organization for exclusive use at its discretion. OK, the county will get the farm land which they in turn plan on giving to a technical college for its agricultural program but this is in clear violation of the bond initiative the acquired the land in the first place. Essentially, its a bail out of the YWYSA, a private organization, by the county at the expense of the current users of the park. A couple of other points to get your blood boiling: SASS allows model rocketry (we sometimes have hundreds of cub scouts come and use the field for big rocketry events), dog racing and walking, kite flying, small electric flying ( Speed 400 power), etc., the LWYSA has signs all over their site that allow one activity SOCCER ONLY. They use their fields about 5-6 months of the year, our site is open to all 365 days of the year. If you have ever flown at our site you will know how unique and wonderful it is, a beautiful combination of thermal flying and some slope lift formed by an adjacent ridge. The site attracts users from all over the greater Seattle area and hosts a number of competitions throughout the year. From spring through the fall, every Wednesday, SASS hosts a beginner night where club gliders are made available and members help novices get started. SASS manages the field in such as way as to be a true public park, where diversity of use is encourage when it does not impact safety. The same cannot be said for our soccer neighbors. SASS and other groups in the area will be fighting this 'land swap' deal with everything we can manage but it illustrates some points being made in this thread. There is an article in MA this month about how one power club went about purchasing its own field and mentions that the AMA is encouraging clubs to consider going this route. After they got their private field they were able to get a $5k grant from the AMA to make field improvements, perhaps this is the way of the future. Its interesting to note that this club was displaced by soccer fields developed adjacent to their old field (and a new high school building) at which point they were asked to leave. In the coming weeks and months I am sure others will be posting about our plight, so stay tuned. SASS would appreciate any help that the RCSE community may be able to provide. At 08:07 PM 11/2/2005, Michael Lachowski wrote: Wow, you have slope and thermal sites in less than an hours drive. That's pretty good. A better description for NJ is it takes an hour to get anywhere for anything. I will admit I'm lucky in that I do have a field 10 minutes away and I can fly the small stuff out of my back yard. [EMAIL PROTECTED] wrote: How much flying will you be able to get in when you will have to drive an hour each way to the field or slope? It's going to happen, just a question of time. RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format Best Regards, Russ Light [EMAIL PROTECTED]
[RCSE] Problem with posting to RCSE
For some reason I have been trying to post a message regarding the Triton charger for the last week but it never shows up. Is there a method for contacting the list moderator for this type of problem? It will be interesting to see if this message posts. Regards, Russ Light [EMAIL PROTECTED] (personal) RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
[RCSE] tape for molded planes
All, What kind of tape is preferred for the following applications on molded planes? I want to avoid surface damage. 1) Servo covers 2) Wing joints I have used the tape from Jim Carlton for my bagged wing planes in the past and it has worked well. I had to lay down a layer of clear tape on the wings and fuse to keep the paint from coming off however. Is this required on molded planes? Regards, Russ Light [EMAIL PROTECTED] (personal) RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
[RCSE] Slow charge with a Triton - found method
WARNING: This process defeats some of the safety features of the Triton charger. The user is responsible for any and all screw ups. The following information is for entertainment purposes only and no one in their right mind should follow any of the instructions given below. This procedure was only tested using a 4 cell, 2300 mAH NiMH battery pack but I don't see why at this point why packs with more or less cells will not work. Different cell capacities may have different charge voltage curves that my procedure may not be able to handle. Charging at a .1C rate should not damage anything so its worth trying. The Triton charge step size is 100mA so for battery capacities below 1000mA the charger will not be able to do a .1C rate. Through some of the input I received, a little web research, and some experimentation I have determined how to use the Triton charger to work as a low constant current charger to condition new NiCad or NiMh batteries. The problem with the Triton charger is that peak detection cannot be turned off (a gross oversight on the design team IMHO). However if you look at the charge curves for NiMh (sorry, I only looked into NiMH but I believe the same general procedure will work for NiCad) under low charge currents such as the .1C rate, which is the desired rate for conditioning new batteries, the peak in applied voltage to maintain the constant current is almost non-existent at this rate. See figure 17 in the document at: http://www.moltech.com/techdata/appmanuals/NiMH_Application_Manual.asp The lack of a clearly defined peak at the .1C rate and that you can set the Triton peak detection voltage allows you to operate the charger as a slow charger, i.e one that doesn't peak detect. Here is a step by step procedure for a NiMH battery pack which was a 4 cell receiver pack using 2300 mAH batteries: 1) Calculate the charge current to use for conditioning a battery. Use a .1C rate. For the example pack: 2300 X .1 = 230mA, round to the nearest 100ma or 200ma for this example (the charge current minimum step increment for the Triton is 100mA steps) 2) Calculate the total amount of charge capacity that will go to the battery. This is necessary to defeat another parameter called the NiMH Max Charge Input (p. 14 in the manual) which will terminate the charge if set incorrectly. In step (1) we calculated a charge current of 200mA. The maximum time we can get the Triton charger to run is 990 minutes = 16.5 hours (the Safety Timer parameter, see step 5 and p. 13 of the manual). During charging the Triton will continually calculate the charge put into the battery by taking the charge value and integrating over time. Since its a constant current charger the math is easy, charge current X charge time. For our example, 200mA X 16.5 hours = 3300mAH. So we will need to set the NiMH Max Charge Input to a value higher than this number or else the charger will terminate prematurely. 3) Set battery type to NiMH 4) To further ensure peak detection is not reached set the sensitivity to the highest value, 15mV per cell, in the setup menu 5) Set the safety timer to the maximum value in the setup menu to 990 minutes = 16.5 hours. This will act as the timer for the charge operation since we have defeated the peak detection system 4) Set the NiMH Max Charge Input to a value higher than the value calculated in step 2. For my example I set the value to 3500mAH 5) OK - here is where if you screw up, you can ruin your battery, set your house on fire, kill the dog, get divorced, go insane, become an alcoholic, etc Set the charge current to a .1C rate calculated in step 1 or 200mA for this example. If you set this value to the wrong number like a high current the Triton will merrily cook your batteries (though you might get a peak detection) for hours with all the nice safety features defeated. 6) Thats it - hold down the button for 2 seconds and start conditioning the batteries. The charger should stop in 16.5 hours. There is probably some debate if 16.5 hours is sufficient to condition the batteries. My Triton came with table that gives 'Break-In times for various sizes of NiCad and NiMH and none of the times were that long. In Geroge Joy's recent post for his new Sirius Pro Former he mentions 24 hours for large packs. I guess for longer times you could run the Triton charger again and set the Safety Timer parameter to a value to get the charge time you want. George says on his website for the Sirius Pro Former After 24 hours, your new pack will be completely formed and ready for 3 to 5 fast charge cycles. It will then be capable of achieving all the performance the manufacturer designed in, but didn't take the time to build in.. So after performing the above set the Triton up for discharge-charge cycle and you have completed the process. Regards, Russ Light [EMAIL PROTECTED] (personal) RCSE-List facilities provided by Model
[RCSE] Tritin Charger - how to slow charge?
I have a new NiMH receiver pack and wanted to slow charge the pack for the first time using a Triton charger. The Triton documentation refers to slow charging but I can't seem to figure out how to set it up. I can set the charge current to a low value and set the safety timer to a large value but it seems the charger will always try for a peak detect and if it gets one then stop. The manual indicates that the safety timer comes into effect when 'peak or full charge is not detected'. Is there a way to ensure peak detection will not occur and thus get essentially a constant current charger with timer? Regards, Russ Light [EMAIL PROTECTED] (personal) RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
[RCSE] Sharon Pro 3.7m V-Tail - anyone have any construction pictures?
Hi, I was hoping someone could send me some pictures/advice of how they did the V-tail linkage on a newer Sharon Pro 3.7m V-Tail. On mine the V-tail has music wire control horns that extend down. The linkage provided for engaging the music wire is a clevis like link with a ball that can rotate. The ball has a hole that the music wire passes through. I believe other Sharon models use a more traditional ball link setup. The linkage is straightforward but a trail fit of the v-tail on the fuselage showed that the tail of the fuselage is too long and block the music wire horns. It seems like I have two options: 1) cut the fuselage back so that the 'horns' clear but expose all the linkage 2) slot the fuselage to allow the motion of the horns but this looks like it might be a little tight. I'd appreciate any feedback especially a picture or two, thanks. Regards, Russ Light [EMAIL PROTECTED] (personal) RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
[RCSE] Compulsion parts, Dodgson Design Maestro for sale
All, I have the following Compulsion parts for sale: Compulsion (1) painted fuselage with severe but I think repairable damage, rudder OK, nose cone has slight crack at open end, with one DS368, one DS341 servos, Hitec Superslim receiver, 1800 ma NIMH battery pack, installed, damaged occurred after getting caught in retriever line on launch (1) new fuselage, raw, no installation work done, un-painted, w/ rudder bellcrank, fuselage has two very minor dings in it..easily fixed. One is a penny sized compression ding in mid tail cone. The other is a small glass fracture on the fuse at the rear of the slip on nose cone, left side. (1) wing set, 7035 airfoil, one wing panel repaired after bad break, have flown since and wings still fly well, not sure if they will take a full winch launch, (4) DS368 servos installed, with wiring harness for receiver (my own design) (1) wing set, FS01 airfoil, right wing broken completely into two pieces at the flap/aileron joint, the left wing is almost undamaged except for a small crack at trailing edge flap/aileron joint, I believe very easily repaired, no servos, damaged occurred after getting caught in retriever line on launch (2) wing rods, std dihedral, the other is 7 degrees (1) horiz stabs set, surfaces in good shape, one stab has the carbon tube for the joiner rod damaged which I removed - needs some work I would like to sell everything in one batch. The servos, receiver, and battery pack go for about $400 new. Asking $400 for everything, ie plane parts are free or make me an offer. Buyer pays shipping. Will provide pictures of wings and fuselage, please e-mail. Dodgson Design Maestro I bought this already assembled a few years ago and never got around to installing the radio gear. Originally came with mechanical mixer though I removed that with the intent to install computer radio gear, flaps and ailerons are currently tied together. Not the best assembly I have seen, wings are covered with monocote but done in multiple colors. E-mail for pictures $100 or best offer, buyer pays for shipping Regards, Russ Light [EMAIL PROTECTED] (personal)
