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Posted by bigtruck169 | Apr 19, 2016 @ 01:27 PM | 1,893 Views
Arduino: How To Build An Obstacle Avoiding Robot (5 min 29 sec)

2S 1200 Mah lithium battery-

2S battery charger-

Download The Arduino Code:

note- you have to install the AfMotor library first:

Check out the instructable:
Science & Technology
Standard YouTube License

ATmega328P CH340G UNO R3 Board & USB Cable for Arduino DIY MC

Keyes HC-SR04 Ultrasonic Sensor/Distance Measuring Module for Arduino

Avoidance tracking Motor Smart Robot Car Chassis 2WD For Ultrasonic For Arduino ( complete kit- $32)
Posted by bigtruck169 | Mar 28, 2016 @ 01:59 PM | 1,347 Views
Maglite to LED using Lipo

very bright LED
This is not my writing. just information i came across for reference.

Alkaline Battery Shoot Out

Have you ever wondered…
Which brand of battery is better? Are they all the same? Is the “Industrial” version better than the regular version, or how about the “Plus” version? Does “Heavy Duty” mean it works better? Are the private labeled batteries rejects from the name brand battery manufacturers?

I found myself wondering the same things, and decided to do a series of tests.

I picked a variety of batteries. While my list is far from exhaustive, I think this is a good representation. The graphs are pretty full, but if I have made any glaring omissions, additional data may be added in table form.

Battery Capacities:
Alkaline battery capacities are listed at a reduced load that is typically well below the demands of a lot of our lights. The capacity is reduced at higher load levels. Energizer lists the following capacities for comparison:
Energizer Max
AAA 1.250 Amp Hours
AA 2.850 Amp Hours
C 8.350 Amp Hours
D 18.000 Amp Hours

Graph Nomenclature:
Ah = Amp Hours
Wh = Watt Hours
M = Minutes

The battery line up:
Duracell Copper Top – Name brand
Energizer Max – Name...Continue Reading
Posted by bigtruck169 | Nov 17, 2015 @ 12:43 PM | 2,074 Views
how to pick brushless car motor

HPI Trophy Flux Buggy motor mount
Turnigy TrackStar 4068 2560KV 1/8th Brushless Motor - $41
Turnigy TrackStar 150A 1/8th Scale Brushless -$82
Turnigy 5000mAh 4S 20C Lipo Pack
Spur 51T, Pinion 19T

using EMaxx motor plate for $9
motor mount is $45, direct fit.

Lx2e/ Lx1e, GTP2e share almost same part to ULTRA LX models
30675 - motor mount - $29.95
30694 - motor 1900kv 5mm shaft - $120
30665 - Pinion 14 teeth - $13
30120 - Spur 44 teeth - $12
30695 - ESC 90A - $220
30662 - Ofna Battery case/ receiver box kit - no price

For Lx2e, stock is 13 pinion, 55 spur

Novak 6.5 conversion 5000mah 3s - run 20 mins

HK TrackStar 150A 8th scale ( 4S) - $76.65
Turnigy 8th scale 4pole 2100kv (5s) - $39.75

parking lot anyway to get a clean run @ 18/54 ( pinion/Spur). The best I could get with that gearing was 63mph ( 4s with this motor)

another coverted buggy

motor mount Reading
Posted by bigtruck169 | Nov 03, 2015 @ 12:44 PM | 2,338 Views
919.176850 -- motor is mo-6436


DeWalt 5 Hp Motor
Electric Motors Pivot Bracket Style 5 Hp Motor

5 Hp Motor
Brand: DeWalt

Model/Part Number: D20659 (Z-D20659)

This item fits the following models:

Pivot Bracket Style
Sears Craftsman - 919.156520
Porter Cable Parts - CPLC7060V1 - Type 1
Sears Craftsman - 919.176450
Sears Craftsman - 919.175960
DeVilbiss Parts - 66-750
Sears Craftsman - 919.184192$_3.JPG
Posted by bigtruck169 | May 07, 2015 @ 02:29 PM | 2,638 Views
cheap DLG for $75 with hotwire foam -
old thread, but lots of talk on the hotwire material -
Weekend Project: 5-Minute Foam Factory (4 min 55 sec)

How to make a Hot Wire Foam Cutter w/ FREE 12" NICHROME (8 min 19 sec)
...Continue Reading
Posted by bigtruck169 | May 01, 2015 @ 08:20 AM | 2,835 Views
something much powerful then our lipo.
Posted by bigtruck169 | Apr 29, 2015 @ 09:56 AM | 2,717 Views
LED Lumen to Watt
To replace a 100-watt incandescent bulb, look for a bulb that gives you about 1600 lumens. If you want something dimmer, go for less lumens; if you prefer brighter light, look for more lumens.
Replace a 75W bulb with an LED bulb that gives you about 1100 lumens
Replace a 60W bulb with an LED bulb that gives you about 800 lumens
Replace a 40W bulb with an LED bulb that gives you about 450 lumens

print car body with design. Liquid Masking Film

prop saver video

My plans changed i decided to go pylon instead of folder.

i'd like $120 plus shipping and fees, so $130 out the door

you could do the following setups on this

13x8 on 3S, pulling 38A, glider, warmliner to 2.5m, Siren, Orion, all esprit glider etc..
14x6 on 3S pulling 31A, glider, very warmliner up to 2.5m (slower, more thrust)
10x12 on 3S pulling 45A small pylon racer, 50", decent speed, Swift, or reverb from hobbyking, plasma etc.. sunracer
10x12 on 4S pulling 74A, fly burst, up to 8 seconds throttle, Swift, or reverb from hobbyking, plasma etc.. sunracer
10x17 on 4S pulling 90A, fly burst up to 5 seconds throttle. Swift, or reverb from hobbyking, . sunracer, xplane, viper
14x14 on 4S, fly on switch, 3 to 4 seconds burst, 100A ESC
Swift, or reverb from hobbyking, . sunracer, xplane, viper
12.8x13 on 4S fly on switch,...Continue Reading
Posted by bigtruck169 | Apr 29, 2015 @ 05:15 AM | 2,959 Views
my private box in rc group is full, if anyone need to email me, please send email to will try to fix my rc group mail box within these few days.
Posted by bigtruck169 | Feb 23, 2015 @ 02:23 PM | 4,654 Views - some cheap kit boat - 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 @ 10:28 AM | 4,800 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 @ 09:01 PM | 4,494 Views
Building The Simple Tricopter from (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

Scale Flying model of XC-142 VTOL (16 min 27 sec)
...Continue Reading
Posted by bigtruck169 | Sep 27, 2014 @ 10:34 PM | 4,342 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 @ 02:50 PM | 4,295 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 DONíT 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 @ 07:34 AM | 4,654 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 @ 08:19 PM | 4,686 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 @ 08:06 AM | 5,080 Views
read the news and this is completely stupid
Posted by bigtruck169 | Apr 08, 2014 @ 01:20 PM | 5,655 Views
TPV stuff
RMRC Cricket - 5.8GHz Video Transmitter with Race Band - 200mW

Feelworld FPV1032 10 inch 32CH

IRC - 5.8 GHz SpiroNET Omni SMA Antenna Set (LHCP)

RunCam Sky+ 600TVL - Mini FPV Camera with case - 2.8L DC 5-17V

Tricopter scratch build

The Tricopter V2.6HV posted by RCExplorer - David

middle plate

tricopter build detail

wood build tricopter

frame material
Electrical-Grade Fiberglass (GP03)
1/16" Thick, 12" x 12" ($5.00) Tripcopter 2.0 build