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Buy, Sell, Trade or Give Away / For Sale - Senior Telemaster
« Last post by Deerslayer on Today at 05:32:44 AM »
 This is the large version of the classic Telemaster. It is legal for, and has been flown at, several Giant Scale event.

 An extremely docile aircraft, yet it is fully aerobatic. Takes off and lands in almost zero length.This would be an excellent entry level plane for anyone wishing to try giants.

 It was built from a kit, with several modifications, including 2-piece wing and detachable tail for easy transportation in a small car. The design calls for a .61 size engine, but this one sports a dynamite OS 120 4-stroke engine (could be easily converted to electric). It has fully independent Flaps and Ailerons, plus a servo and dual purpose release mechanism suitable for banner or glider towing. Candy drops? - it's a natural! All servos are high quality, high torque metal gear. Any radio of 6 channels or more can be used (receiver is not included in this sale).

It flies well on wheels or skiis (snap-on Coroplast ones provided). Rear fuselage has been strengthened in critical area for possible float attachment.

For $200, it is yours!  ;D
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Thanks for the encouragement, Gord.
 I finally learned something regarding the ROG takeoff situation (slow leaner here!). The following discussion is for my own benefit and perhaps for yours, Gord.

The above videos clearly show the problem I have been having, a combination of a questionable Thrust Vector (TV) mixing strategy and my slow reaction time. Just to make things more interesting, I avoid getting into using a Flight Controller, the objective being to do all the complex stuff within Airware, the Spektrum system which operates the DX9 and other DX-series transmitters. I am very happy with this latter decision. The former issues are correctable, methinks.

The one perfect ROG launch was due to my switching Flight Modes and thus disabling vectoring at just the right time, within a second or so of liftoff. The subsequent crunch was due to a completely unrelated issue - the plane normally flies like it is on rails once airborne and approaching horizontal, as the hand launches have proven.

 In Launch and Landing Modes, I have Elevator mixed to Thrust Vectoring (TV). This seemed like the right thing to do, as the motors have to be rotated almost vertically for ground clearance of the props and, secondarily, to provide immediate launch thrust. So, I have coupled TV into Elevator for this. The result is that the takeoff is extremely quick - sometimes, the machine does an immediate back-flip right off the ground. If I do get airborne, I have to immediately flip to Cruise Mode to cancel TV and have normal, pitch stable control. Similarly, in Landing Mode, with this coupling enabled, it is way too pitch sensitive. The coupling can still be selected in Cruise Mode via a normal switch, to perform its big trick, the wicked backflip(s).

 So, I reason that the solution is NOT to couple TV to Elevator for Launch and Landing Modes. During Launch and Landing Modes (in the latter, it may be left as switch selectable, as there is much more time to set up for a stable approach and landing).

 I will reprogram the Launch Mode, at least, so that we have full TV at low Throttle, gradually being reduced as Throttle is advanced. This will take a bit of tinkering, as we have to judge at what point the machine will have begun rotation, is likely to become airborne, will have prop clearance with the motors returned to align with the chord line, and then completely dump TV so that it can be flown out normally. This will give me lots time to move from Launch to Cruise Mode without any other distraction - as long as we have a high Throttle setting in the Launch Mode, TV is effectively off and the switch to Cruise will ensure that Throttle changes do not re-engage it.

 To try this, I may drag my poor, somewhat abused  Tailsitter Mk.1 out for another "kick at the cat can", rather than sidelining it and moving the gear to the new machine.

 If  one of my conscript videographers is available, I may even be able to document the whole sordid affair!

 If there is anyone else out there who is weirdly inclined to play with this kind of stuff, I can perhaps offer some help.Misery loves company? This plane is terrific in the air, the fully back-flips are something you will not likely see on anything else, the plane itself emerged from 2 sheets of Elmers foamboard and the only real complexity is in the DX9 programming, for which my SPM is readily available as at least a starting point, along with spreadsheet documenting all configurations and settings.
 
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Looks promising Gary.
 Better get back at mine.
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 Thank you, Wilf, Harold and Terry for your assistance during a very interesting series of tests. Here is the product of your efforts - the Ups and Downs of flight testing this bird. Having video is very useful, as I can run it in VLC, slow motion and stop it, to see what happens during the most critical second or two of a launch, for instance.

 There may or may not be more flying of this machine, as it has undergone some sessions with the glue gun and the foamboard itself is getting sort of punky due to the paper detaching. I think that we may have gone past the Flypaper Golden Ratio of hotglue:foam, so this may be the end of my work with this one. The next one is radically different, still a taildragger wing, twin-engined, vectored thrust but much simpler. It will be much easier to get going, due to my experiences and learnings to date, plus the extensive programming of the DX9 which will be essentially unaltered for the new machine.

 Meanwhile, rumour has it that there may be one of these beauties incubating in the fevered mind of Flypaper, or it may already be on the operating table! Go Gord, Go!

So, here is the whole sordid affair:

https://youtu.be/YebpBz2wan4
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FPV at KRCM / Re: Flying Crash Mystery
« Last post by Wilf on August 18, 2017, 04:46:56 PM »
It seems it is a transmitter problem.  both planes had different receivers in them. the explorer had a lemon stabilizer with remote receiver. the mini buckle had a dsmx dual antenna system. 


PS I did a range check and it barely worked at 30 meters..all controls very sluggish.. I will pull the trasmitter apart and check the antenna connections and then send it to horizon through the store for evaluation.
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VIDEOS and PICTURES from KRCM Events and Activities / Drones eye view of the field
« Last post by Wilf on August 17, 2017, 07:20:31 AM »

Here is a HD video taken from my nephew Jared LeMay's Typhoon drone.  Cliff Smith and Jay Kingston will probably be interested in this drone's eye view of the field.  It shows Cliff doing a pre giant scale test flight of Jay's giant stick..


Here is the link:   


https://Youtu.be/DFF6o091jXM


The video doesn't have sound, but is in high def..
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Well, Taildragger Test Flight #2 was somewhat brief and anticlamactic. No video, but I learned something, so we can call it ... Success!

This one was much better. The art of taildragging is a bit daunting, so I enlisted the help of Flypaper to provide an assisted launch. Meanwhile, Cal ran the camera. Thank you, fellows!

https://youtu.be/11auB5eNfZM
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FPV at KRCM / New FPV Camera from Lemon
« Last post by Deerslayer on August 15, 2017, 07:39:45 AM »
 Very interesting! This was just announced.

 For those who are not familiar with Lemon, they have a lot of great products. I have a number of their DSMX receivers, receivers with integrated stabilizers including the latest Stab+. Testing done by outside RC and electronics experts have shown them to be unmatched in range. A number of others in the Club are also Lemon users.

 The designer is from Vancouver and has terrific support, which he reciprocates, amongst the Lemon user community. He normally provides samples of the latest items to a select few to thoroughly test and document. The Lemon manual for the original stabilizer and the Stab+ were both developed by a a pair of flyers - one in the Ottawa area, another in New Zealand - and have addressed all comments and concerns throughout the lifespan of the products, with the developer's total support. In fact, when you order one, you are provided with the link to that manual and other information on RCGROUPS.

  This tiny FPV setup will undoubtedly live up to the standards of all previous offerings. (I already have too many things sitting in boxes, awaiting installation in carious flying things, so I hope that someone else bites on this so I can at least see one!) 

http://www.lemon-rx.com/index.php?route=product/category&path=80

https://www.rcgroups.com/forums/showthread.php?2940390-The-official-Lemon-4-1g-VTX-Camera-thread#post38105806
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FPV at KRCM / Re: Flying Crash Mystery
« Last post by Deerslayer on August 11, 2017, 05:47:35 PM »
Hmmm ... doesn't sound like Tx issue to me ...
1) You have flown to much greater distances without any hint of problems.
2) Both planes went down in almost the same place. Coincidence?

Now, as for Rx problems ...
Did you have the same Rx in both planes? Same antenna orientation?

If not the same brand/model of Rx, are they both DSMX?

DSMX is practically invincible to outside corruption, from what I have read, except if some sophisticated deliberate jamming were employed. That is highly unlikely, even if the army was doing its thing to the west of us, in the DoD practice area.  If they were both DSM2, well then there is a chance that something bounced them (DSM2 only uses 2 channels, they can be close together and therefore more susceptible to interference than a frequency hopper like DSMX that uses a number of channels in its pre-determined pattern. With either of these, the chances of 2 different Rx/Tx couplings using the same subset of channels would be practically nil.

On second thought ... Flypaper suggested that you may have a loose antenna connection in the Tx. That may be the most likely cause, if you accept that the crash sites being so close is just a coincidence. Over th3 years, we have had a lot of planes go down in that region. Is it haunted?

You have a real mystery on your hands!
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FPV at KRCM / Re: Flying Crash Mystery
« Last post by Wilf on August 11, 2017, 11:51:35 AM »
A day later, I brought my FPV explorer to the field to try and stop my lost mini buckle. This plane has dozens of FPV flights on it at distances at least twice as far as this last one.  At about 300 meters out, same place as the mini buckle it went crazy and went in.   


Merrill Baker found both planes for me.  They were less than 10 meters apart. The mini buckle had minor damage, but the ft explorer is toast.  Except for a flat battery in the mini buckle, all of the electronics still worked. 


Seems like my Spektrum DX9 has lost output power somehow.....?
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