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KRCM

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This Week at the Toyground! - Who's Flying Today? / Re: Tuesday
« Last post by raven1978 on March 25, 2019, 08:09:39 PM »
Road is not clear as of Sunday.  Need to drive over the 8” ice shelf.
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This Week at the Toyground! - Who's Flying Today? / Tuesday
« Last post by Deerslayer on March 25, 2019, 06:18:31 PM »
Weather looks good.

Does anyone know if the road is clear now? Driving across the "lawn" would seem to no longer be an option, unless you have a Monster Truck or a good friend with a bulldozer or crane to extract you.
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General Discussion / Good On Graupner
« Last post by cloudniner on March 23, 2019, 06:00:07 PM »
Just go my latest Model Airplane News magazine.

They just voted the Graupner MZ-32 the best radio of the year.

They also voted the Graupner Droneball Sweeper the best drone of the year.

Good on you Graupner.
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Plans, Projects, Building and Flying Tips / Auto Launch Video
« Last post by Deerslayer on March 23, 2019, 07:10:37 AM »
Continuing on with my ramble ... Roger "Steady Cam" Harrison and I had big fun flying and recording earlier this week. That boy does a fairly good job; I may even have to give him a 10% raise, someday.

The narration in this video leaves a lot to be desired :(  What the dude refers to as a "javelin" launch method explains a lot about why he never did Track and Field back in the old days. Clarification:The javelin is that long pointy thing that can be used to, I guess, spear groundhogs and slow-moving squirrels. The technique for flinging a flying wing is properly referred to as a "discus" launch, that is the one like where the T&F folks toss a big, heavy frlsbee-looking plate at the snakes, or whatever. Best to avoid all of that and just fly toy planes, methinks. Incidentally, the plane in this video really, really did not like such a throw (Sorry, Roger, your camera work was perfect, but I sort of omitted that little "failed launch" segment in the final product, as I suffer enough embarrassments without going out of my way to document them.)

https://www.youtube.com/watch?v=IrqHkADgDaM&feature=youtu.be
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VIDEOS and PICTURES from KRCM Events and Activities / Wilf's range EX
« Last post by Deerslayer on March 22, 2019, 11:43:12 AM »
Spring has sprung, and out from the Wilf's Lair emerges a new FPV plane! This one is the Ranger EX, what we think is an ideal FPV plane. In fact, Wilf forced me to order one the day after this video was taken.

Wilf has a 4K camera mounted on a gimbal system beneath the nose. As well, he hasa Runcam mounted on top for the actual FPV piloting. Soon to be installed is the iNav Flight Controller but for the initial flights, it is just an ordinary receiver in use - one step at a time, a wise approach.

This was a great Spring flying day, albeit a bit breezy and turbulent, as you can see. The iNav will take care of that for this lightly loaded aircraft.

Enjoy:
https:/
/youtu.be/2XvwD7uASd8
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VIDEOS and PICTURES from KRCM Events and Activities / Sonicmodell HD
« Last post by Deerslayer on March 21, 2019, 06:14:41 PM »
I like flying wings! I have a few, and I have had many others during my 40 years of rc flying. A few of those have been taken out of a box, but most are of my own creation and have showed up in many forms and sizes.

 This one, obtained from Banggood at a very reasonable price, has proven to be an excellent flyer. Mine is fairly heavy for a plane that is, at least currently, not going to be for FPV use. That is because I used what I had on hand to equip it, some sort of a Rimfire motor which is probably way over-powered for this application and a heavy load of batteries at the extreme nose to set a reasonable C of G placement - as is critical with flying wings. Several have come in a box, but most have been my own creations in various sizes and shapes.

I have learned, through some bungled launches, that this plane needs a really good toss, otherwise the motor torque plus prop rotational drag will quickly snap it to the left, irrecoverably. Yes, thanks to Harold, I even have a video of one of "those" launches. However, I do not feel compelled to include that embarrassing little clip in the video I am submitting here!

In an upcoming video, I will explain and demonstrate the Auto Launch system which I developed, using the DX9's Sequencer capability. Meanwhile, I hope you enjoy this little segment:

https://youtu.be/Jezqu0he14E
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General Discussion / Re: Interesting article for taking off with a Taildragger
« Last post by ganguy on March 19, 2019, 10:36:44 AM »
Back in the days when I was doing pilot training on Chipmunks, one of the first things they taught us was a little right rudder on takeoff to counteract torque, so this is old hat to me!
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General Discussion / Interesting article for taking off with a Taildragger
« Last post by Rene on March 19, 2019, 10:13:53 AM »
If you wonder why your airplane turns left on take-off, this is a good article.

A good trick, Taking off center-field will give you room and time to control/correct your airplane

Enjoy

https://www.boldmethod.com/learn-to-fly/aerodynamics/why-you-need-right-rudder-on-takeoff-to-stay-on-the-centerline/




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Plans, Projects, Building and Flying Tips / Auto Launch and wild winds
« Last post by Deerslayer on March 17, 2019, 04:10:39 PM »
Today, out at the  Toyground, I got the long-awaited chance to really prove out the value of my Auto Launch system. Two of my flying wings, the Micro Wing and the 2nd generation of the Black Widow, were the test subjects. The winds really came up, with strong gusts, enough that I would normally not have flown either of these, or many of the other planes in my fleet. The launch would be just too difficult, plus I have better things to do than repair stuff right now. So, let's give 'er and see what happens.

With the big wing, it was hard enough to just hold it down by my side to commence the Launch. The little one was just twitchy to hang onto. But, both behaved exactly the same, and exactly as I expected.

Here goes!

Power up the plane.
Unlock the Throttle and initialize the ESC, leave the Throttle off but enabled.
Select the LAUNCH Flight Mode.
Press and hold the Launch button.
Elevons wiggle once ... 1 ... 2 ...
Start moving the plane, discus style and not very fast ... the motor ramps up as the fling is underway ... let go part way through the fling (the plane is still far from level) .. the plane accelerates away, leveling almost immediately, as the elevons become effective and it moves out in a gentle climb at full Throttle, steady as a rock!

Lots of time to get on the right stick and start hand flying it. Even in Self-levelling mode, you can still have limited control of Pitch and Roll. Vector, iNav and possibly some other Flight Controllers can command the Throttle, but the current Lemon Stab+, Guardian, Bigaole do not.

Whenever you are ready, release the Launch button and the Sequencer lets go of the Throttle and releases the stabilizer from Self-level Mode into whatever condition your Stabilizer Mode switch is set to on the transmitter - Off, Stability or Self-level.

On a day like today, Stability is a very useful mode, making it seem just like flying on a calm day - but, remember not to get terribly far downwind!

Self-level can even be useful during the pattern and landing phases, especially when you get down through the wind gradient and into the low level turbulence.

Man, this stuff really works! And it's not just for flying wings, or even for hand launching. Someone who may have mobility issues of some sort may be able to put this to use. (Who knows, you I may even be there someday yet would still like to enjoy some low stress flying).

Again, if someone would like to learn more, or see a demo, or try setting this up on one of their own flying objects, I would be happy to try to help you.
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General Discussion / What does 22ms mean? (in Spektrumspeak)
« Last post by Deerslayer on March 16, 2019, 07:05:14 AM »
When you Bind a model, your Spektrum radio (most of them, I think) will show and announce (if Bitchin' Betty is available and awake) the protocol being used (DSM2 or DSMX) and a time (11 or 22 milliseconds). So what? Well, for the curious, here is the explanation of what the numbers mean and how the Spektrum folks pack the available channels into the available slots. For most of us, this would never matter. However, for something of extremely high performance, such as a jet or 3D monster, one does care, as you don't put an critical item that demands extremely quick response to commands onto one of the upper channels.

The following a response from Andy Kunz, the Lead Developer from Spektrum, in answer to a question from a viewer (like me). This had to do with converting a model from one transmitter to another.

The Spektrum protocol puts out a packet of data every 11ms. The packet holds 7 channels.

In 22ms mode, that means there are 7 x 2 slots available, 14 channels total. The first 6 of each packet are channels 1-12, and the last slot is used for the X-Plus channels (which makes it very obvious why they are up to 88ms latency).

In 11ms mode, there are 4 channels that are sent every time, and the remaining 6 channels come in 3's. It sends out 4 channels + 3 channels, then the next packet has the same 4 channels + 3 different channels. 4 + 3 + 3 = 10 channels max in 11ms mode.

The DX18 generates its data as 12 channels + 8 channels, where channels 11 & 12 are the same as X+1/2.

The DX20 generates its data as 12 + 8 also, but channels 11 & 12 are configured independently.

This is what the "DX18 Compatibility Mode" option is for. It lets you pick 10+8 or 12+8 mode.

Because the iX12 can import files from either one, or from a lower end DX, it can generate either mode as well. It's important to understand what you are getting the configuration from to know how it will behave. If you import from a DX18 or lower, it will most likely be in DX18 Compatibility Mode, generating channels 1-10 normally and using X-Plus data for 11 & 12. If you import from a DX20, if it's in 20-channel mode then channels 1-12 will be as you expected. It is done this way because the purpose of importing a file from another type of radio is to make it so that the new radio controls the old model exactly the same way. You want your new radio to fly the plane the same way as the old radio, not change channel assignments on you.

Opalix didn't understand that part and assumed that the DX8 file he imported would automatically go into the 20-channel mode. It doesn't do that because a DX8 works in DX18-compatibility mode for channel generation (but you can't get there on the menu). He's got it all straight now (we've been working with him for several weeks through Product Support and PMs).

Andy
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