HobbyKing.com New Products Flash Sale
bigtruck169's blog
Posted by bigtruck169 | Feb 23, 2015 @ 03:23 PM | 1,881 Views
http://www.zippkits.com/ - some cheap kit boat
http://www.hobbylinc.com/htm/dum/dum2807.htm - drive shaft set

Creating a solid mount for the motor is imperative. Attach wood to the inside of the hull with epoxy and mount your motor mount to the wood. Be warned that the plastic hulls are generally on the thin side and will have a good amount of give to them. This is another reason to use wood to stiffen the area where the motor mounts. Don't be surprised if there is some slight "twisting" of the hull when the motor is fully torqued.
When getting a rudder, it is possible to get a rudder with a built in water pick-up for the cooling system. When using these, it is very important to get the prop as close as possible to the rudder. The prop wash is what forces the water through the tubing. No prop wash, no flow. The forward motion of the boat is NOT enough to move the water through the tubes. (Learned that one the hard way
Posted by bigtruck169 | Feb 17, 2015 @ 11:28 AM | 1,886 Views
1 hp = 746 Watts.
EDF - 85% exhaust reduction Fan swept area( FSA)
you want it the exact same size as the rear of the edf tube, but in a normal configuration, you could vary the size of the opening depending on what speed you want more thrust at... a smaller opening will give less initial thrust, but will give more thrust when the plane is up to speed, allowing a higher top speed, where a larger opening will give more initial thrust, but will give less thrust once the plane is up to speed, meaning a lower top speed....
FSA caluclater -

Micro EDF Jets and Power Systems

the longer the inlet duct, the larger the inlet area should be. a good compromise would be an 85% FSA inlet, with an 85% FSA exhaust area. as a rule of thumb, you should never go smaller on the inlet, than the exhaust are

Intake area depends on the complexity of the internal ducting. corsair Nut had and F86 with an intake area roughly 70% of FSA and it performed very well. With a straight duct, smaller intake.area will work well. In complex shaped duct, I doubt that intake area would have worked as well.

Having said that, try to aim.for an intake area between 85% and 100% of your fans FSA. This will give you the beas performance overall. The smaller the intake area, the faster your top end speed will be, but static performance will be lower....Continue Reading
Posted by bigtruck169 | Nov 05, 2014 @ 10:01 PM | 2,460 Views
Building The Simple Tricopter from www.simplecopter.com (52 min 2 sec)

it uses 3s 2200 batteries, I got 8+ minutes in hover/tuning tests. the motors will swing a 10 - 11 inch prop with a 3s battery and a 9 inch prop on a 4s battery.

3D print file for tricopter

quad information page

...Continue Reading
Posted by bigtruck169 | Sep 27, 2014 @ 11:34 PM | 2,342 Views
Toyota Sienna How to program keyless entry remote control ,security
Toyota Sienna How to program keyless entry remote control ,security (2 min 54 sec)

Posted by bigtruck169 | Sep 17, 2014 @ 03:50 PM | 1,846 Views
Latrax was founded by Jim Jenkins in 1977. The first R/C toy was the Alpha, followed by the Lancia Stratos, Mustang Cobra, 77 Camaro, and the 1979 Firebird. On the Hobby side, the first Latrax Hobby R/C was the Corvette, followed by the 1979 Firebird, Porsche 917, and the Hustler Buggy. I believe that there was a Latrax Cigarette Racing Boats, one that was a toy model and a second one as a Hobby model. As far as I know, those where the only Latrax models available, along with the parts accessories.
What makes this story so ironic was the fact that Mr. Jenkins sold Latrax to Brinkmann in 1980. And a few years later, around 1982, Brinkmann closed down the company because it was not part of their core operations.

With that said, Mr. Jenkins went on to co-found Traxxas in 1986, which was about 9 years after he establish Latrax. Today, his son, Mike Jenkins is sole owner of Traxxas, a company that was built on top of the Latrax brand.

It would be great if someone would write a bio on the origins of Latrax and the people behind it and how it led to the creation of Traxxas.

02/08/2006 20:42:36
description **PLEASE READ THIS** for anyone looking at this model displayed in my showroom and wondering if I will sell it? PLEASE DON’T ASK!!! I get numerous requests from TC members wanting to buy cars displayed in my Tamiyaclub showroom, and to be honest I get very annoyed when people ask to buy something that is clearly NOT FOR SALE!! This car is part of MY COLLECTION and...Continue Reading
Posted by bigtruck169 | Jul 29, 2014 @ 08:34 AM | 2,534 Views
Amazing WW2 Aircraft Facts

These are very moving statistics.
On average 6600 American service men died per MONTH, during WW2 (about 220 a day).
People who were not around during WW2 have no understanding of the magnitude. This gives some insight.

276,000 aircraft manufactured in the US .
43,000 planes lost overseas, including 23,000 in combat.
14,000 lost in the continental U.S.

The staggering cost of aircraft in 1945 dollars

B-17 $204,370. P-40 $44,892.
B-24 $215,516. P-47 $85,578.
B-25 $142,194. P-51 $51,572.
B-26 $192,426. C-47 $88,574.
B-29 $605,360. PT-17 $15,052.
P-38 $97,147. AT-6 $22,952.

From Germany 's invasion of Poland Sept. 1, 1939 until Japan 's surrender on Sept. 2, 1945 = 2,433 days.
America lost an average of 170 planes a day.

A B-17 carried 2,500 gallons of high octane fuel and carried a crew of 10 airmen.

9.7 billion gallons of gasoline consumed.
108 million hours flown.
460 thousand million rounds of aircraft ammo fired overseas.
7.9 million bombs dropped overseas.
2.3 million combat flights.
299,230 aircraft used.
808,471 aircraft engines used.
799,972 propellers.


Russian Ilyushin IL-2 Sturmovik 36,183

Yakolev Yak-1,-3,-7, -9 31,000

...Continue Reading
Posted by bigtruck169 | Jul 27, 2014 @ 09:19 PM | 2,655 Views
Please read before clicking on link below. It will explain and be more interesting. The U-2 is considered the most difficult plane in the world to fly. Each pilot has a co-pilot, who chases the plane on the runway in a sports car. Most of the cars are either Pontiac GTO's or Chevrolet Camaro, that the Air Force buys - American. The chase cars talk the pilot down as he lands on a bicycle-style landing gear. In that spacesuit, the pilot in the plane simply cannot get a good view of the runway. Upon takeoff, the wings on this plane, which extend 103 feet from tip to tip, literally, flap. To stabilize the wings on the runway, two pogo sticks on wheels prop up the ends of the wings. As the plane flies away, the pogo sticks drop off.

The plane climbs at an amazing rate of nearly 10,000 feet a minute. Within about four minutes, I was at 40,000 feet higher than most commercial airplanes. We kept going up to 13 miles above Earth's surface. You get an incredible sensation up there. As you look out the windows, it feels like you're floating; it feels like you're not moving, but you're actually going 500 mph. The U-2 was built to go higher than any other aircraft. In fact, today, more than 50 years since it went into production, the U-2 flies higher than any aircraft in the world, with the exception of the space shuttle.

It is flying more missions and longer missions than ever before, with nearly 70 missions a month over Iraq and Afghanistan , an operational tempo that is...Continue Reading
Posted by bigtruck169 | Jul 08, 2014 @ 09:06 AM | 3,095 Views
read the news and this is completely stupid

Posted by bigtruck169 | Apr 08, 2014 @ 02:20 PM | 3,653 Views
Posted by bigtruck169 | Mar 27, 2014 @ 02:44 PM | 3,587 Views
Kyosho Viento

ST model Blaze, some setup

Vtail talk

Kyosho Serenade 1500

vtail setup

From : Don Stackhouse

The advantages to a V-tail are for the most part more structural than aerodynamic. The whetted area is essentially the same, but they have less interference drag than a conventional tail (fewer corners, and usually wider angles in those corners).

In addition, dividing up the same total area into only two surfaces instead of three means that their span loading and/or Reynolds numbers will be better. This becomes increasingly significant the smaller you get, so it can be a very important factor for models. This is part of the reason why V-tails are more common on models than on full-scale aircraft. They also have some of the same aerodynamic benefits as T-tails, but without the T-tails' deep stall problems and horrendous structural penalties.

OTOH, there is some destructive interference between the panels of a V-tail for yaw stabilization and rudder authority, which is a disadvantage in full-scale. However, in my experience, the effects of the improved span loading and Reynolds numbers usually more than make up for this in most model aircraft applications.

Structurally,...Continue Reading
Posted by bigtruck169 | Mar 03, 2014 @ 03:18 PM | 3,423 Views

Ultracote and Monokote color paint match charts for mixing PPG paint.

Quick jump to your color below:
Ultracote: Orange, Yellow, Flame Red, Deep Blue, Black, White, Deep Red, True Red, Midnight Blue, Aluminum, Purple, Cub Yellow, Sky Blue
Monokote: Jet White, Royal Blue, Insignia Blue, Dark Red, Metallic Red, Red (miscle), Black, Sky Blue, Cub Yellow, Aluminum, Maroon, True Red, Metallic Blue, Purple

Note: Below the folloing links is the chart in text form, which is quick loading. You may also click the links to view the original JPG files of the scanned data, which has more information but takes a long time to load (up to 1MB!).
JPG #1 Ultracote Orange, Yellow, Flame Red, Deep Blue
JPG #2 Ultracote Black, White, Deep Red, True Red
JPG #3 Ultracote Midnight Blue, Aluminum, Purple, Cub Yellow
JPG #4 Ultracote Sky Blue
JPG #4 Monokote Jet White, Royal Blue,
JPG #5 Monokote Insignia Blue, Dark Red, Metallic Red, Red (miscle)
JPG #6 Monokote Black, Sky Blue, Cub Yellow, Aluminum
JPG #7 Monokote Maroon, True Red, Metallic Blue, Purple

Ultracote Orange Base Color Parts Cumulative
DMC900 Strong White 48.9 48.9
DMC908 Strong Yellow Oxide 23.0 71.9
DMC907 Yellow Shade Moly Orange 610.9 682.8
DMC906 Medium Chrome Yellow 757.9 1440.7

Ultracote Yellow Base Color Parts Cumulative
DMC900 Strong White 153.2 153.2
DMC905 Lemon Chrome Yellow 1240.8 1394....Continue Reading
Posted by bigtruck169 | Mar 03, 2014 @ 02:42 PM | 3,578 Views
On an earlier thread I posted some links for covering weights, they were compiled by independent testers (listed below) using a variety of measuring standards like Oz/sq/yard, Gr/Sq/Meter, etc, making it hard to compare them accurately. Well, I sent'em all through the online converter and changed them all to "Grams per Square Foot". Why? Because it's easy. Most kits and plans (in the U.S.) supply wing area in square inches and we all know that 1 square foot= 144 square inches, right?
Anyway, here they are, lightest to heaviest from the top. Some of the sites differed by a small amount so I converted those to a "Range" and for a couple of samples there already was a "range" of weights, since some of the colors are heavier than others. For further descriptions see the links on the earlier post. http://www.wattflyer.com/forums/showthread.php?t=10278
Weights in Grams per square Foot.

Produce Bags (Thin Plastic, From Target) 0.53 (See Post # 18, 24)
Japanese Tissue 0.650
Risteen Microlite (Corsair Blue) 0.81 (See Post # 20)
Risteen Microlite 0.90-0.95 (see post # 15 + 20)
Esaki Light Silk (Clear) 0.97
Risteen Microlite (Light Yellow) 1.1 (See Post # 20)
Saran Wrap (11" x 12") 1.29 (See Post # 18)
Ripstop Polyester 1.575 (see post # 15)
Coverite MicroLite (Transparent) 1.889
Nelson LiteFilm 1.950
SoLite 1.950
Airspan 2.119 (Mfg listed weights 2.229-2.601)
MicaFilm (Transparent) 2.332
LiteSpan 2.674-2.787
Light Colored Japanese Tissue, 2....Continue Reading
Posted by bigtruck169 | Nov 23, 2013 @ 04:22 PM | 3,539 Views
crow on throttle-dx7
DX7 - PZ Radian Pro Full House Set up (14 min 48 sec)
DX7 - PZ Radian Pro Full House Set up
here is the setup for a Radian Pro with a DX7 and AR600, motor is on gear switch, flaps are on the throttle stick and camber is on 3-position flap switch.

First, you want the servos attached to the receiver as follows:

CH1 THRO - Flaps Y-harness
CH2 AILE - Right aileron
CH3 ELEV - Elevator
CH4 RUDD - Rudder
CH6 AUX1 - Left aileron

Now, for the transmitter, in the system setup mode under TYPE SELECT, set the type to ACRO. Under INPUT SELECT, set AUX2 to INH and set FLAP to SYSTEM. Set FLAP TRIM to ACT. Under WING TYPE set FLAPERON to ON and V-TAIL to OFF.

In the function mode under REVERSING SW, set CH1 to NORM and the rest to REV.

Under FLAP SYS, under the FLAP column set NORM UP 20%, MID 0%, LAND DN 20%. These values can be adjusted for more or less camber. Leave the ELEV column set to all 0's.

Set PROG MIX1 to THRO-> ELEV ON and set both RATEs to -20%, SW to ON, and OFFSET to +100.

Set PROG MIX5 to FLAP-> THRO ON and set both RATEs to +100%, SW to ON, and OFFSET to 0.

Remember, with this setup, your throttle stick will normally be in the high position. I also moved my flap pushrods all the way to the end of the servo horns to get about double the throw.

detail setup for radian

dx7 for sailplane 4 servos
http://rc-soar.com/...Continue Reading
Posted by bigtruck169 | Oct 21, 2013 @ 03:44 PM | 3,724 Views

Interfacing Spektrum DX7 to either DragonLink, EzUHF, Thomas Sherrer, or ChainLink LRS

March 17, 2011 Categories: Compatible Equipment Lists, Equipment Connections & Wiring, Featured by Ian Davidson 27 Comments

Connecting a Spektrum DX7 to long range radios is not documented well as most of the LRS manufacturers only explain how to connect their TX to Futaba radios. The DX7 has a trainer port that sends out PPM signals and some have tried to use this port for their LRS connection. The benefit of using the trainer port is that the DX7′s 2.4 radio is automatically cut from power and does not transmit any longer.

However, measuring the PPM’s signal power of the trainer port reveals that the signal is a lot weaker compared to the internal PPM bus signal. In theory, you want to provide your LRS system with the strongest PPM signal available, which means you have to use the internal PPM bus. This manual describes how to hook your LRS system directly into the PPM stream of the radio and also provides power (which the trainer port does not). While it requires you to open up the radio, cut some wires, make some solders, and drill a hole in the case, it’s really not that bad of a mod and provides a great solution that makes switching between LRS and 2.4 easy. Thanks to Ian for coming up with this solution and for writing it up!


This isn’t a detailed ‘how too’ manual, just a quick overview....Continue Reading
Posted by bigtruck169 | Sep 05, 2013 @ 10:59 PM | 4,550 Views
Just another sad heli guy pass away. Be safe. Dont know if law enforcement will do anything to stop us.

Queens man, 19, killed by toy helicopter shared passion for remote-controlled fliers with father
Roman Pirozek Jr. was in Dreier-Offerman Park — also known as Calvert Vaux Park — in Gravesend, Brooklyn when his remote-controlled helicopted sliced his head and throat Thursday.

Read more: http://www.nydailynews.com/new-york/...#ixzz2e4znakf6
Posted by bigtruck169 | Feb 07, 2013 @ 02:59 PM | 4,256 Views
If you want a cheap quad to thrash around I think you might be going in the wrong direction. You can build a 400mm Hquad frame for about 4 bucks in 1/2" wood dowels and 1/8 birch ply. Run some 8 dollar Emax 2822s with cheap gemfan 8x4.5 props. This would allow you to use a 2200mah 3s for 8-9 minutes of tooling around. SimonK F30A escs and a Flip multiwii FC or a KKv2 if you want onboard programming without a bluetooth module.

The Hquad frames are hella tough and very rigid and dirt cheap.
Posted by bigtruck169 | Dec 17, 2012 @ 12:15 PM | 4,439 Views
Vtx/ Vrx discussion

cloverleaft antenna blog

UNO 5.8 GHz Receiver V2 - ImmersionRC/Fatshark - 65

ImmersionRC 5.8Ghz Audio/Video Transmitter - FatShark compatible -70 (600mw)http://www.hobbyking.com/hobbyking/s...er_600mw_.html

sony 600 TVL camera HDR

4.3 Inch TFT-LCD Car Rearview Monitor with Pocket-sized Color LCD Display Monitor for Car / Automobile - 23

light stryker -
5.8ghz 200mw micro stuff with bluebeam set, vrx on a 4 foot dowel/pole.
Stryker light, auw rtf with fpv gear and battery = exactly 400grams (14oz), thrust = over 17oz (500grams) (or more depending on prop but I like the 7x6 on the blue wonder 1700kv motor, speed range is 5-75mph dopplered)
vizio 15inch off 2200 3s = over 5 hours (removable black elmers foam board (velcro))
vtx and vrx powered off 1s ~150mah lipo each (about 30+ minutes possible, but I switch between 2 sets of batteries each flight)
3s 850mah flight pack (10-15 minute flight time cruising around, over 30 min possible by gliding around higher up)
pz0420-2.8mm lens with pan servo (case is dollartree foam board, paper removed, covered with uline packing tape (same for the elevons and verticals))
rp8d1 w/futaba 9capAnother FPV guide:


FPV antenna
Posted by bigtruck169 | Nov 21, 2012 @ 01:59 PM | 4,379 Views
During the past storm sandy in north east, we were out of electricity for almost 2 weeks. But we have natural gas supply (we can still cook). House was cold as hell.

So I try to figure out how to power up the heating furnace without 120v, at least heat up the house.

We are using steam heat (gas boil the water and steam just push up the pipe to upstairs). From what I saw, there is no hot water circulation pump or any circuit board, only wires to thermostat and the electric gas switch- solenoid. There is a small transformer (slightly bigger than regular cell phone charger) on ceiling. I believe this is the power supply for the whole heating furnace. I measure the output and it read 24volt AC

Now my question is how I get 24 volt AC, maybe using some old deep cycle battery that we use for charging in our flying field or worst just pull out my car battery just for emergency.

Some people told me to get a generator to main panel so I won’t have to rewire so much and at least house can have some light or so. But running a generator in suburban area is almost close to impossible. I will use it as last option.

Hope some electricians / plumber flyers here can give me some advice. Don’t know if we will be lucky to get power within 2 weeks. Thanks in advance. Mike