Chophop's blog View Details
Posted by Chophop | Feb 05, 2016 @ 08:18 PM | 2,267 Views
I suppose I'll be building an Entertainer from plans at the AMA site. I had the PDF printed at the local print shop, qty 6, 36x60 inch. Two each of the fuselage, and two each of the short and long wing. I plan to build both wings.

And it looks like it will be powered by a Cobra C-4120/18 and MAS 12x8x3 on 6S lipos. A very peppy airplane by the looks of the plans. 1.5:1 thrust and 73 mph pitch speed.

Looks like a large but simple build with low parts count. No outrageous jig needs.
So next I order the balsa, my mind is set. I like the designer's graphics, so I will clone them. I do want to make a clear windshield and extra round set of side windows. Hopefully no more mods, just build it.

http://www.modelaviation.com/entertrainer
Posted by Chophop | Oct 23, 2015 @ 04:30 PM | 2,958 Views
I think I would run and shake my $4800 at him, but I of course would have to make sure it's as good as it looks. Someone I don't know is selling this locally. Some better wheels for the front and that's it.
Posted by Chophop | Sep 24, 2015 @ 08:21 PM | 3,108 Views
I tried an AeroSport 46 from Value Hobby. It's ok for a low wing taper wing trainer, but I would wait until you know stall recovery well. The taper wing airplanes do not stall as gently or recover as easily as the boring look rectangular wing. I figure what keeps me in the air is the best.

So far it is sort of sloppy at lower speeds maybe 40 mph and below. I'm testing it at only 570 watts, I would say it really needs 750 to 800 watts. It will fly modestly on 600.
I will need to upgrade my 6S 20C batteries as I am getting over 4 lbs with the airplanes. Those 20C's get stressed at that draw. It was nice getting by cheap on the lipos but when ya move up, ya gotta pay up.

Here's how I solved the ventilation situation without carving it up too badly. Cut a hole in the bottom of the cowl, carve the wide hole in the firewall bottom. That slot has two purposes, ventilation and also to simply be able to mount the ESC without scrunching the wires up in some desperate attempt.

The exit vent is made by removing the covering from the underside, between the cowl and landing gear. Then two pieces of aileron stock and some balsa sheet make the vent. I'm sure I can get by with the small exit because it generates a low pressure as the flow rushes past the ramped vent. You might want to close the air intake side of the esc with scotch tape to keep dew and condensation from getting rammed into the speed control.

I did this on another such plane and it makes a nice sort of hiss and bit of high speed whistle sound at high speed. Just a little bit of whistle, not a screamer.

I tore the landing gear off two days ago because of an ESC with bad soldering and a heat sink/rf shield that shorted out. It was not heat that caused the failure, but I decided to carve the sleek look up for practical purposes.
Posted by Chophop | Sep 07, 2015 @ 07:58 AM | 3,213 Views
Since the Holyday approaches and the nature of the Holyday will be enhanced in my corner of the world by what I do, I will not make raw jokes at least until that special day and spirit of the season passes.

I think they might know their methods are spawning rebellion to their Three Stooges punishment methods, and making things worse. Even so, I will not mud the season with such rebellion.
Posted by Chophop | Jun 16, 2015 @ 02:38 PM | 3,669 Views
The stinking attitude of many people had been on my nerves lately, so I worked up a plan. Being tired of my day being turned into a stinking unpleasant time, sort of brought a vaporous plan. I made myself stink, an awful stink, and went around making people smell it . I got me a good laugh at how they could not get past that smell.

So maybe now they will better appreciate people in proper hygiene. They are rarely happy with anything.

So, anytime the kids do something wrong, make them smell the jar of Limburger Cheese. Say you have been bad. You have to smell the Limburger Cheese again. Open it up and try not to laugh.
Posted by Chophop | Nov 28, 2014 @ 08:00 PM | 5,268 Views
I ran into a need to detect a flame or fire and sound an alarm (again, still trying to get out of here). Suppose you have a bunch of glow fuel and often worry it might somehow catch fire.
Here's how to make one that doesn't use any electric until it senses a fire.

You need a microswitch. Preferably, one with a long arm that has a roller or hole at the end of the arm. Wire your horn or whatever to be turned on by the NC (normally closed) contacts of the microswitch.

Now find the thinnest fishing line you can find. Fix the microswitch to a 100% firm structure and so that you can tie one end of the fishing line to the arm, the reason for the roller or hole, a place to reliably tie the line.

Mount the switch so when you pull on the fishing line, it pulls the arm in and opens the NC contacts. Now stretch the line across the area you store flammables and fix it reliably to some structure.

So with a horn or some sort of alarm connected to receive power when the arm swings to it's natural position, you are now protected. A flame will melt the fishing line, and the arm will swing, the NC contact closes, and the horn (etc.) sounds.

Good luck and use it at your own risk, I am simply explaining how I make one.

Of course you want to mount the switch where the fire can't get to it, at least for a very long time. The string will pull the switch (and any of them) in the down direction. It has a spring that returns it to the up position as shown. Some people haven't seen these.
And you might want to attach a stronger spring to it to be sure it trips.
Posted by Chophop | Jul 23, 2013 @ 08:14 PM | 8,688 Views
Check this Star Wars thing out, I had to buy one. It's outrageous.

Hermi Odle was one of the aliens in Jabba the Hutt's employment at his desert palace. Odle was a large Baragwin who wore a tattered cloak and had droopy lips. He took up residence on Tatooine after his ship was shot down by an Imperial patrol. He was employed by Jabba after he impressed the Hutt with his weapon-making skills, and tasked to make the palace impenetrable.

Odle was a faithful servant of the organization, designing weapons and the palace security system, and kept his position until Jabba's death.
Notably, his greatest foe in the palace was Pote Snitkin. Their rivalry took a turn for the worse, as Snitkin sabotaged a weapon of Odle's, which resulted in the death of one of Jabba's pets. The Baragwin got his revenge when he shot Snitkin on Jabba's sail barge in the frantic battle over the Pit of Carkoon during the attempted execution of Luke Skywalker, Han Solo, and Chewbacca. Although only stunned, Snitkin was unable to escape the blast. Odle, however, did escape and traveled to Mos Eisley, where he stole one of Jabba's starships and left Tatooine for good. His fate after leaving the planet is unknown.

In Return of the Jedi, mime artist Phil Herbert wore a full-body creature suit to portray Hermi Odle.
Hermi's deformed lip is unique to him. Baragwins generally have normal lips, like the Jedi Astaal Vilbum.



Although Odle is supposed to have shot Pote Snitkin on Jabba's sail barge, Snitkin was not aboard the barge; he was driving one of the skiffs.

This thing already snags a pretty good price, the unopened collector's item will bring the best price.
Posted by Chophop | Feb 10, 2013 @ 02:44 AM | 7,140 Views
I'm interested in the neutral field on the right. The uncoupled accumulation of stray fields EVERYWHERE may cause problems with the earth. Best to leave masses of devices to experts who know how to keep things with the earth's field correct. I do think large scale production of magnetic devices should be controlled, if not already.

Physics Lab Demo 6: Magnetic Field (2 min 26 sec)

Posted by Chophop | Jul 30, 2012 @ 05:43 AM | 8,519 Views
I did not waste any time typing a post here. It was well spent.
Posted by Chophop | Jul 22, 2012 @ 06:50 PM | 8,402 Views
I have found that glow fuel causes severe global warming. Spill some in your lap and I guarantee it will warm the globe.
Posted by Chophop | Jul 21, 2012 @ 11:13 PM | 8,205 Views
July 21, 2012

I finally did my 54 inch Cessna in tonight. Went out to fly with no dinner and lost my depth perception. Went out too far on base leg and snagged a power line then it fell to the pavement. Tore the nose out and did strip the rudder servo gears, HS-81. I think I stripped a wing servo gear too, it makes the sound but tracks. I'll take them apart tomorrow to see.

I did crunch two Turnigy 3S 2200's. So after I was done flying my other plane I shot some holes in the batteries. No flames, but an orange glow in the holes and a cloud of smoke. I wanted to see if they would flame, but no flames. More fun than tossing them in a bucket of water to discharge. Now to be sure, they go in a bucket of water for a few days.

No need to say sorry, this was a lesson in rolling with the punches. That plane was a scratch build and it flew and landed just fantastic. Now I'm off to find a 3.5 lb 54 inch to 60 some inch replacement.

Wow, as bad as the Cessna was damaged, I got it flying again in a few days. So don't freak out in front of everyone if you crash. You might get it flying again and not make a fool of yourself.

Oct-Nov has been a bad month. I lost a Great Planes Cirrus and an electrocuted Laser Stick .10 with a sheeted wing mod. Not so good, three planes in a few months. I went years without crashing. I left a trash can in the way and lost the Cirrus trying to move it while flying, the Laser Stick .10 had an aileron servo go bad.
Posted by Chophop | Jul 04, 2012 @ 05:07 AM | 8,145 Views
zzzzit happens
Posted by Chophop | May 03, 2012 @ 12:21 PM | 7,705 Views
I'm often asked, "What's the big deal about flying ?" Why not do something else ?"

What's the big deal about something else ?
Posted by Chophop | Jan 05, 2012 @ 07:00 PM | 8,383 Views
I always bypassed the moon in my astronomy. I thought it was just a big ball with a bunch of craters. But as of lately I realized the moon is there for us to see up close and personal. It is an inspiration that accelerated astronomy because it is so predominant in our lives. So look at it and learn. Don't ignore the moon !
Closer to the point , I think God made the moon look like it does to tease us for being sinners.

Another thing I noticed, rotate the image of the moon to the large dark area at the top, then mirror flip the image. It now bears a strong resemblance to North and South America. I just noticed that this morning, December 24, 2013. They should put this on Tales of the Unexplained.

I was doing some imaging experiments of the moon and found a surprize I hadn't expected. I thought the moon was too bright and maybe using an ND filter to lower the brightness would bring more detail out. I ended up with a color image of the moon, not black & white as always before. Turns out others got the exact same results. This photo I found on the web was so close to mine I decided to save the trouble of digging it up on a CD somewhere in my archives.

An ND filter is neutral density, meaning a simple blackened glass that does not affect color, it only dims the image.
Posted by Chophop | Feb 10, 2011 @ 07:13 AM | 9,024 Views
space reserved !
Posted by Chophop | Feb 07, 2011 @ 06:34 PM | 8,686 Views
They were killing each other by the millions before I came in to the world, the left side of the dip in war curve. Even so, you all sure made one nasty world to live in.

Please be careful with your science or better, what stimulates it, and mind yourself. Or maybe just go on and feel free to make the right side of the dip in war curve turn up worse than WWII. After I'm gone, they will probably be killing each other by the tens or hundreds of millions.

Don't YOU want to do YOUR part to keep that curve down as it's been ?
Posted by Chophop | Jan 10, 2011 @ 12:11 PM | 8,694 Views
No interest observed
Posted by Chophop | Dec 30, 2010 @ 06:22 PM | 8,580 Views
It didn't go very well. Intermittently, the bind light on the transmitter went out and no transmit. I sent it off, it's been out 3 weeks now. No terrible problem, it is off season, time to get things like this done.

I got it back, it worked a few minutes then no RF out again. I repaired the problem. There was a bad solder joint I found. Now I'm impressed with the radio. Nice airplane instruction set for $200.

The problem could have fooled the seller. Shipping it could have jarred the joint loose. Having a name similar to underwear (BVD) sure didn't help my paranoia.
I thought it was paranoia, took a chance and had a minor problem. It was a wonderful suspense filled month and 1/2 total purchase and shipping time, ship to Hobby People, wait on technician, ship back then see the problem not fixed.
At least Hobby People covered the return shipping.

I would have done the repair myself on the first start, but I was trying to be a law abiding person. Turns out these 2.4ghz modules are legal for me to repair.

After today's testing, I guess the radio is ready to fly an aircraft with. I think I'll go do some test flights on my Raptor 90. Just joking, the E-Starter is my transmitter test plane, haw haw.

Been doing some testing. The fit and stick feel is great and the airplane programming is very versatile. The heli programming is a few commands short of Spektrum but perfectly useable, the missing ones are really most convenient for mechanical setup slop.

Oct. 2011 update :

After a summer of use, the RDS8000 is my prefered transmitter. It fit my grip perfectly from the start and the adjustable stick pressure is a MUST. The airplane programming commands are super.
So I bought a used one that I needed to do a little repair to and now it's fantastic. The repair success only served to boost my pride.

June 2012 Update, I think this RDS8000 is a very good choice.
As of February 2013 I think the RDS8000 is a fantastic choice.
Posted by Chophop | Oct 04, 2010 @ 10:02 PM | 8,196 Views
Sometimes I get responses I can't answer or are currently overwhelmed by something. Then when that happens, I fail to answer appreciated responses. Don't take insult if it happens, if you have an important need, just try again or say anyone in there ?

Apologies

Ch
Posted by Chophop | Aug 17, 2010 @ 09:11 AM | 8,947 Views
I didn't feel confident with velcro so here's how I mounted my camera. I like this better. This was originally posted in the Keychain Camera thread but about anything gets lost in that one anywhere from a few hours to a day or so.
I bored a few holes wrongly. I am on the peak of some allergy or cold, and not thinking well. One reason for using my "best plane" for the experiments.

The camera is held on at the rear by a 2-56 thumbscrew, and up front by two or three rubber bands. Depends on how good the bands are. I may find an O-ring to fit instead.