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Messages - Deerslayer

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1
General Discussion / Re: MAKING CHILI THE KRCM WAY
« on: January 17, 2019, 10:15:07 AM »
Warning! Clickbait alert!

I got suckered into looking at this, believing that Mr. Chili was really going to live up to his promise of delivering the recipe. Narf! The closest you get is to view the picture of him with that smug look as he pours some mysterious concoction from a plastic bag into a witches' cauldron.

          "Fillet of a fenny snake, In the cauldron boil and bake; 
           Eye of newt and toe of frog, Wool of bat and tongue of dog,
           Adder's fork and blind-worm's sting, Lizard's leg and owlet's wing,
           For a charm of powerful trouble,
           Like a hell-broth boil and bubble." .

Methinks that he doth read from Willy Shaky Speare and findeth the recipe! He moved recently, so who knows what potential ingredients he may have found in his new lair? Has anyone seen his kat Sam recently?


 We don't even know if this whole thing was staged, do we? Who is taking the pictures? Could she be the REAL architect of the chili?

Well, ya gotta admit, whatever it was made from and whoever made it, it was pretty good and they deserve credit.


P.S. We demand "proof of life" for poor Sam the kat! A picture alongside today's newspaper or newscast from a reputable organization may suffice. Or else ...

2
Plans, Projects, Building and Flying Tips / Foamy Hinges
« on: January 12, 2019, 09:30:06 AM »
As I prepare my latest store-bought foamy for flight, I would like to pass along something which I only learned perhaps 4 or 5 years ago and which may be news to some others.

Many foam planes come with foam hinging for the control surfaces. This kind of thing is very strong, sometimes extremely stiff to bend.

 It can become reasonably flexible - if you prepare it properly. Do not think that you have to haul out the knife and start slicing at the hinge, or chop the control surface out in order to re-hinge with (dog forbid!) CA hinges or even Robarts-style pin hinges. I have many hours of hard flying on a number of planes with the original hingeing and no breaks.

The trick is to "season" the hinge.

1. If the controls are already hooked up, unhook the control rod from the surface to be worked on.

2. Work the control surface slowly and gently, back and forth, perhaps half way to their extreme positions. You do not want to tear things apart. Do this a few times.

 3. Then, gradually increase the movement to reach the extreme positions, cycling it slowly a dozen or more times.

4. The hinge is now through its initial break-in. You can continue this deflection more rapidly, Don't go overboard on this and rip things apart!
Do this dozens of times. Some say a hundred - it can't hurt.

You now should have a very strong, yet flexible, hinge that will not unduly load your servo and still resist any tendency to flutter.
 
In some cases, such as a couple of sailplanes that I own, you will find that the hinge line is at the top (probably)  or bottom (not likely) of the interface between the structure and the control surface. In that case, at perhaps Step 3, you may wish to bend it all the way up and prop it or tape it in place overnight. The hinge will relax into that position and you will find that it becomes even easier to achieve full deflection up and down.

Good luck!

3
General Discussion / Re: Modelling in Aerodynamic Research
« on: January 10, 2019, 05:50:48 AM »
There were a couple of "Facet"-like models in there!
Surprise, surprise! Barnaby Wainfan and his wife Lynn are both aeronautical engineers and he is presumably still an Adjunct Professor at He co-authored an excellent NASA report in 2004 regarding low aspect ratio aircraft ( think Facermobile!). It was good reading, the PDF is the last (No.6) in this Wikipedia entry:

https://en.m.wikipedia.org/wiki/Wainfan_Facetmobile

While you are at it, Google him and check out his resume (PDF). Majorly impressive,  continuing into current times!

4
General Discussion / Modelling in Aerodynamic Research
« on: January 09, 2019, 09:29:15 AM »
Here is an excellent NASA document which I found in another forum. If you find it too lengthy or difficult to understand, just enjoy the pretty pictures!

https://www.nasa.gov/pdf/483000main_ModelingFlight.pdf

5
Upcoming Events at KRCM and elsewhere / 2019 KRCM Auction - February 16
« on: January 06, 2019, 11:06:58 AM »
The Annual KRCM Auction is Saturday, Feb.16, at the RCAFA Club at Kingston Airport, where the Harvard is mounted.
The doors will be open at 0900 hours, to allow for set-ups and registration.

Clear out those Hangar Queens. If you haven't flown them for months or years, you don't need them. Dig out and dust off that old kit that you're never "gonna get around to" building. Tools, engines, radio gear - it's all welcome. Turn this into cash, then buy someone else's stuff.

Plan to get there in good time, register (FREE, of course!), set up your stuff on a table (no charge)and relax. The Club receives a 10% commission on all sales.

Make use of the RCAFA bar for soft drinks and other libations, popcorn, tater chips, etc. Bring your own sandwich, the action is non-stop!

Throw a buck or two into the 50/50 draw - you may become a very RICH person. We give the other half to the RCAFA, as they waive the usual rental fee for this day.

Browse around, check out the wares, meet others, and get ready for the main event.


Then, the fun really begins We have a highly experienced Auction Team eager to spring into action. Keep them busy, make them happy:

* The Auction itself will get underway as soon as Registration is completed, planning for 1030 hours.

* The 50/50 draw will take place around noon.

* Our Auction System allows Participants to settle up at any time, in case you have to leave early.

* We expect to wrap things up by mid-afternoon.

6
Fortunately, we haven't had one of these arrive at the Toyground in a long, long time!

https://youtu.be/hx5Es0bnulM

7
Here is a new, very important discovery in the world of penny tech!

An altenative to the usual foamboard has occasionally shown up in the various  Dollarama stores in Kingston. Note: not Dollartree

Aside: Who knew that we have so many Dollaramas around here?

It is called UCreative, with a big, colorful label stuck on it. All sheets are white base but one side has been very lightly coated with a color, typically Yellow or some sort of Red.

Important features:

1. No paper covering.

2. Construction. It is obviously 2 layers of material bonded to form a very stiff sheet that is slightly thicker than either of the paper-covered foamboard products we have been using.

I think that this material is the same as Depron, which is just one company' s name for its polystyrene sheet products.

If you want some, you may have to shop around. I discovered it at the new Cat Center Dollarama several months ago. When I went back a few months later, there was  none. I checked at the downtown store; a shelf stocker guy thought he knew what it was, even checked out back for me, but no luck. Then one day, I found some at the RioCan store. Yippee!

What a great find is this product, for those who hack out foamy flying objects  - a fraction of the price of "official" hobby shop Depron, very disposable!

8
Well, hasn't the Commander of the RAF (Reg's Air Force) been a busy little fellow! (Hint of jealousy here, Reg). He has clearly broken out from the pack (small though it may be) with his two most recent creations - the Facetmobile and Mr. Slowly. The latter has now received formal colouration and how sweet it is!  :D

It also flies - extremely well! Everyone should have one of these things.

The Commander is too modest to post his artistic achievement. Or perhaps he is just trying to rub it in by forcing me to display his contenders, rather then my own sorry offerings in the Flypaper Foamy Challenge (three, so far, none of which were worthy of keeping alive).  :-[

So, check this out and applaud a job well done:

9
VIDEOS and PICTURES from KRCM Events and Activities / Re: Pogo 2018
« on: December 27, 2018, 08:33:24 PM »
He is begging for a raise for his videography?

How does BILLION PERCENT raise sound?

You would be worth every penny of it, D  :D

Awesome, now I can buy a pack of gum...lol
Sorry the Pogo didn't work as you hoped.

Well, it may not have worked as I may have hoped, but it did work as well as I expected!

"Trying is the first step on the road to failure" - Homer J Simpson


10
VIDEOS and PICTURES from KRCM Events and Activities / Re: Pogo 2018
« on: December 25, 2018, 10:35:20 AM »
He is begging for a raise for his videography?

How does BILLION PERCENT raise sound?

You would be worth every penny of it, D  :D

11
VIDEOS and PICTURES from KRCM Events and Activities / Pogo 2018
« on: December 24, 2018, 03:48:22 PM »
Did someone say there was a Flypaper Foamy Challenge underway? (Reg?)

A decade or more ago, my friend Gord. a.k.a. Flypaper, built an electric Pogo. It flew well but never did achieve vertical landing. I was nevertheless impressed and so I built a larger one of Coroplast, powered by a .30 or so glow engine. Like Gord's, it flew well but mine had no hope of even standing vertically long enough to take off nicely, due to engine vibration and inadequate engine acceleration compared to an electric system. Over the years, Gord produced one or two more electric Pogos, one of which even folded up for transport in the Flypaper Express. I think that Dwayne obtained the last one. Gord was quite successful in takeoffs and I witnessed the occasional vertical landing as well,

So, time marches on (too fast, it seems).

Too much idle time plus some uncommitted hardware and a new source of exceedingly cheap Depron means- what to do?
Well, a Pogo wannabe emerged and off we go to the Toyground where Dwayne was lurking beside the nice warm stove, ready to video my attempts at miniature aviation. Here is the result:

https://youtu.be/gWYAMdbAewU

At this time, the Pogo has been revamped a bit, some lessons have been learned and we shall try again in a day or two. As for the Vertical part of VTOL, well the TO part is promising but the odds are stacked against the L part. But, we shall see ...
 

12
VIDEOS and PICTURES from KRCM Events and Activities / Two New Foamy's
« on: December 17, 2018, 02:50:05 PM »

The Flypaper Challenge is well under way. Reg now has a considerable lead. Here is the evidence!

He has to stop building WHITE flying objects for winter flying, it makes it too difficult for us to enjoy the full viewing experience. Oh well, the poor
fellow has a good time - as you can see here.

https://www.youtube.com/watch?v=hS7klgebWm4&feature=youtu.be

13
General Discussion / Re: Warning - electrical issue!
« on: December 16, 2018, 04:42:12 PM »
Gary
I had the same experience with my first FunCub. As designed the power wires are quite close to the edge of the motor casing and eventually did short out.

Funny you should mention that! I got a Fun Cub from my boy. He had replaced the motor. On the original motor, the wires were practically in contact with the motor housing. These wires were only insulated by their coating at that point, no additional plastic sleeve. Nasty! I may again use that motor ( cheap,  cheap) but will always be wary of how it gets installed in something.

14
Buy, Sell, Trade or Give Away / Hobby King Order?
« on: December 16, 2018, 08:44:56 AM »
Any of you folks planning to place a Hobby King order?

If so, I would appreciate adding in a dozen or so servo repair kits.

I repair any HXT900, HXT500 servos, as well as various HiTec, etc., which suffer broken gears.

Why? Because I am a cheapskate, it is a 5 minute effort which I enjoy and the result is a better than new (little trade secret there) servo.
A gearset costs about $1 - still cheaper than spending a whole $3 or $4 for a new servo.

Meanwhile, don't throw out your broken servos, I will take them off your hands. In fact, if it is just stripped gear(s) and you supply or pay for the required gearset, I will rebuild it for you and apply my world famous "tail light warrantee" coverage.


15
General Discussion / Warning - electrical issue!
« on: December 16, 2018, 08:17:17 AM »
Recently, I "repackaged" my Optera (reminder to self, when you take your eyes off a white wing at high altitude, even for a couple of seconds, you may not be able to re-acquire said flying object!).

When I was removing the hardware, guess what I noticed at the spinning end! (Photo attached)

This particular situation could exist on any installation but may be difficult to detect. In the case of my Optera, which was 2 or 3 years old and well used, the leads from the motor must have been jammed into place at the time of assembly. One of the three was rubbing against the rotor, resulting in the wearing away of the blue anodizing and, more importantly, the insulation and underlying wire, being worn down.

Now, this poor installation could just as well have worn down more than one of the three wires. Had that been the case, something bad would have happened. In the worst case, fire! In the not so bad case, the ESC and structure itself would have been demolished. LiPo fire, anyone?

Although this was a factory installation, buried well within the aircraft's structure and impossible to see without major disassembly, it could happen with other setups.

One lesson that I have learned is to carefully inspect any initial installation prior to first flight - if at all possible. You are usually dealing with a very high energy density system.



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