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Posted by Prof100 | Dec 05, 2018 @ 03:10 PM | 1,285 Views
Quanum Half Overlord 5.8GHz 40CH 3 Antenna Diversity Receiver w/Raceband

For $70 I bought one of these from Hobbkying China. It arrived in a month and in working order. Have not tested it since I am not a sub freezing RC flyer. Yes, it has a tripod mount.
...Continue Reading
Posted by Prof100 | Nov 05, 2018 @ 07:36 PM | 1,345 Views

$65 via Amazon prime. 11-5-18. Hobbyking sold these and they went on sale there for about $40 but quickly went out of stock there so I bought from Amazon Prime.

Diversity works well switching from receiver 1 to 2.

HIDDEN SETUP screen (see attached service manual pdf)
By holding down the joystick and powering up there is a second screen that allows you to set preferences and make adjustments such as adjusting the time to switch receivers from 10 milliseconds to as low as 1 millisecond. I adjusted it down to 3 milliseconds. It seems like the sweet spot for me. Time will tell. The receiver is set to beep when it switches. Too many beeps while flying will result in longer Millisecond setting of diversity switching.

Setting the signal strength to % rather than bars works better for me as well.

Channel scan is quite good and it has a spectrum analyzer function as welll.

The AV out plugs right into my Viper goggles with female AV cables that terminate via 2.5 mm single pin for AV input.

I selected the option “skip channels with low RSSI.”

Great value for the money.

LED screen is a bit small but well illuminated and readable....Continue Reading
Posted by Prof100 | Sep 10, 2018 @ 08:16 PM | 2,528 Views
REMINDER for powering up the Taranis. Torrent was setup via Betaflight with horizon, angle and acro mode using a XD+ FRsky receiver.
  • Turn on radio and set flight mode to Horizon mode (up on Switch SC)
  • Position throttle cut switch SA toward me (off) and the Taranis should say the flight mode when TX is turned on (e.g., “Welcome, Horizon mode”)
  • Plug in battery on Torrent
  • Move throttle cut switch forward (on)
  • Move rudder full right with throttle in low/off position (this is a safety feature, full right rudder arms the motors)
  • Torrent is armed and ready to throttle up. Motors turn when throttle is advanced.
  • Go fly
Note: As programmed in Betaflight each time you throttle down you must use the zero throttle full right gesture to run up the throttle. It is a safety.

10/6/18 Update — added EPP feet to protect the battery. A little foam, hobby knife and hot glue and bingo my Torrent has some protection for the lipo.

9/25/18 Update
Replaced the props, added an isolator between the motor and the frame to reduce vibration transfer to the accelerometers and the video camera, and new ducts. All by Rakonheli. Blue Loctite used on motor mount screws to prevent backing out.

*****************************************End of update******************************************** *


Bought one for $95 as a PNP and Dan. S. installed and setup a Frsky XM+ receiver including adjusting the parameters in Betaflight. I have $160...Continue Reading
Posted by Prof100 | Sep 03, 2018 @ 09:41 PM | 1,711 Views
Update 10-12-18
This is fast becoming my go to charger. My FMA PL8 sits next to it but is used mainly for parallel charging 6S packs and fast storage discharging / charging. The Q6 will discharge to storage level but it takes a long time. Fast Discharging creates a bit too much heat that has to be dissipated so discharge rate is purposely limited.

I also purchased the ISDT parallel charge board which includes power input cables and a 6 cell balance lead . Price was $28 plus shipping from GETFPV.

************************************************** ************

Update 9-6-18. New one arrived and it is perfect.

I also watched a video by Josh Bardwell regarding voltage calibration. You can adjust voltage readings by getting into hidden features under system information. Three long presses of the thumb wheel and you can access the function. You need a calibrated volt meter to make the adjustments. The accuracy, while a good goal costs you the price of higher quality volt meter to do the adjustment. So, unless you really need it the cost to buy an accurate volt meter can exceed the cost of the charger. Plus, if you make a mistake you risk bricking the charger.

Original post is below

ISDT Q6 Pro BattGo 300W 14A Pocket Battery Balance Smart Digital Charger. Bought it from Amazon. It arrived in two days thanks to their Prime shipping.

I made up a XT60 power lead harness, plugged it in and was impressed with how easy it was to charge a pack. Screen display is bright, vibrant and easy to read. I charged two packs and when charging the 2nd pack the bright, high resolution display started have streaks of brighter white areas on the right side. So, I requested a Amazon no hassle return. I will drop it off at UPS and within hours have a Amazon gift card so I can buy another.

Amazon is so easy to deal with if you are shipped a defective product. It gets resolved in 3 days or less if you have Prime.

Posted by Prof100 | Aug 28, 2018 @ 09:57 PM | 2,031 Views
UPDATE 10-12-18
Key feature of these goggles is you can comfortably wear your glasses under them. The mirrors used in this design provide 1.9 magnification.

SZFXT sent me for free a replacement upgrade to a V2 display (FX508) because I was unable to update the firmware in my V1 display. And, I was experiencing signal break up. That is outstanding customer service. 10 minute video clips and adjustable display size is now available to me. Hope they work better receiving the signal. All new Viper goggles are V2

:UPDATE. 10-8-18 regrading firmware upgrade.
The Viper V1 upgrade tool and process is beyond reasonable. The three pins that connect the tool are too small to lock into the corresponding holes on the board. Pressure on them does not lock them onto the board. Anybody else do the upgrade have a similar problem? I spent $20, waited 5 weeks for the connector to arrive from Germany. I take my display apart to find that the connector is not properly sized to the board. You have to hold the three pins in a position that assures no break in continuity while flashing. The fear was moot because the upgrade tool USB driver never installed rendering the tool useless.

Yes, shipped Germany, go figure. I want my money back or a free Version 2 disply that already has the firmware upgraded.

Bought on August 4, 2018 from Amazon.

Needs firmware upgrade to lengthen videos.

Bought tool on August 11 but took 5 weeks to arrive. Installing latest firmware reads...Continue Reading
Posted by Prof100 | Aug 09, 2018 @ 11:44 AM | 2,015 Views
Josh Bardwell video that explains how to adjust your tiny whoop for drifting by simply using stick movements.

Calibrate & Trim Betaflight Tiny Whoop Accelerometer | HOW TO FIX ANGLE MODE (14 min 19 sec)

9-28-18 UPDATE
Ordered three sets of 19600 kv motors for $6 clearance price from A main hobbies.
RaceTek CL-0615-19 TinyFPV "Stage 3" Motor Set (19,600kV)

Flight in backyard on a calm September evening.
9 23 18 Ind pro backyard 5 (2 min 44 sec)
...Continue Reading
Posted by Prof100 | Jul 24, 2018 @ 10:54 AM | 1,809 Views
UPDATE 7/30/18
Maiden was a failure. Have to be able to see the plane to fly it line of sight. No damage in first flight. Line of sight does not work when you fly too far away and the plane disappears in the background of gray clouds with 2D mode on and the plane not properly trimmed out before engaging The Eagletree Guardian stabilizer.
Nano Goblin maiden 7 29 18 (0 min 52 sec)

$230 spent with RMRC and I now have a Nano Goblin with the add on camera plus two batteries. I also bought a spare VTX as a backup. It is now ready to fly. I added a 5 A Ubec, a 6 channel Orange RX (Spektrum) and a Eagletree Guardian. The prop is only 3 inches in diameter and you get one left and right. If you break one you only have to swap out any two wires on the ESC connection to use the opposite rotation prop.

Building was a non-event. Applying the decals or stickers wrinkle free was biggest challenge. Everything just fits. The 6 channel Orange Diversity receiver, SBEC and Guardian make for a tight fit.

Range checked at 90 plus paces.

Max throws are 12 mm (6 mm up and 6 mm down) at high rates with 25% expo. I had to dial down the rates in the TX. I also moved the servo arm connection inward one hole to increase servo resolution. No need for long servo arms when you dial back the throws.

Camera is an all in one 200 mw Sinopine that plugs into the receiver. 5 volts max. input. Do not unwittingly plug it into a balance tap. A crispy critter will be the result.

Weight is 247 grams or 8.7 ounces (or about two sticks of butter) all up weight measured with a common kitchen scale.

AMP draw test
Using the Eflite Power meter with a freshly charge pack (after setting throttle range):

Run 1 at wide open
7.7 volts
6.5 amps
46 watts

Run 2 at wide open
7.4 volts
6.5 amps
48 watts.

Lithium Ion 3200 mah 2S pack weighs about 100 grams
Charge to 4.2 volts per cell.
Battery university recommends .5 amp charge rate.

Posted by Prof100 | Jun 19, 2018 @ 06:59 AM | 3,303 Views
UPDATE: 10/18/18 — 4s capable with a 70 amp ESC. Pulls 60 amp peak on 4s on the ground and about 50 amps in the air.
*********************************************End of update***********************************

Bought it when it was $50 off for $229 (Father’s Day 2018).

Assembly was easy like most Horizon products. While portly (i.e., heavy) at 45 ounces the speed is less than the 1100 mm Elev Hobby T28. Flight characteristics are very similar which is no surprise.

With the included AS3X the $229 price is better than the 11H T28 ($150) when you factor in the $20 8 channel RX, $20 Castle Creations 10 amp UBEC and a $65 Guardian Stabilizer. As received the AS3X comes pre-programmed with a well developed set of parameters. Change at your own peril is my advice. An APP and programming dongle is available as an option. I bought one for my Eflite Viking bipe and enjoyed seeing how it was programmed. I changed nothing on the Viking bipe and on the three flights of this plane I saw no need to change any program settings. As programmed from the factory there is no need to add any expo. It is already in the AS3X. Doing so will make the plane feel unresponsive.

Upgrades and spares
I bought the Freewing Super Scorpion nose gear from MotionRC and the servo reverser from Eflite. Scroll down to read how to modify the Freewing nose gear and the plane to work together in harmony. A spare prop and collet were also purchased.

First...Continue Reading
Posted by Prof100 | Jun 17, 2018 @ 09:25 PM | 3,852 Views
Note: It was sent with defective landing gear. Replacement gear set was on backorder. Received new set late August 2018.

Bought it when it was $50 off for $169 (Father’s Day 2018).

Assembly was easy like most Horizon products although the plastic articulated gear was frozen on the starboard side. HH will send me a new set but they are on backorder until July. This seems to be a recurring problem. Also, the pull - pull tail wheel required some skilled bending to correct for a pull to the right. I added a piece of hook velcro in the battery bay. The battery bay holds a 60c - 3300 Zippy compact battery in a position maintain CG.

The only mod was to cut a couple of hook side velcro and stick them to the CG location on the wing underside. Simple and effective way of checking CG. You can use other methods as well. This is just one. You want something you can feel.

With the included AS3X the $169 price is a good value when you consider it comes with a AS3X receiver which is a DSMX receiver and a stabilizer that has both Safe Select (wing leveling) and a more advanced Stabilizer mode. A switch on your radio can be programmed between Safe Select and purely a Stabilizer. The AS3X comes custom programmed by the Eflite develop team. My experience with pre programmed AS3X receivers is quite good. I do not bother reprogramming them. They are pretty good to start with as received.

I have about a half dozen flights on this plane. Very...Continue Reading
Posted by Prof100 | Jun 17, 2018 @ 09:20 PM | 4,418 Views
From flghtengr post.
Key is to make sure rates are set to High before switching the desired switch so it is assigned. Failure to do this and the switch assignment will not work. You will not have both modes.

SAFE Select
The SAFE Select receivers behave like normal AR636 receivers for the most part. Rather than having three SAFE flight modes, there are only two modes - "SAFE on" and "SAFE off". When SAFE is on, it has self-level capabilities similar to Beginner Mode on most of the other SAFE receivers. It has the bank angle limits set to a larger angle, similar to Intermediate Mode on the other receivers. When SAFE is off, there are no self-level or bank angle limit features, turning the receiver into a normal AR636 with AS3X.

The transmitter setup is very simple for SAFE Select. First, you start with a normal, default Acro (Airplane) new model. The first 6 channels are set up to control the plane directly. If the plane has flaps, they should be connected to channel 6 (Aux1) to work with the transmitter's built-in flap system. If you have an additional feature on your plane such as retracts, that would go on channel 5 (Gear).

You can choose whether SAFE is on or off permanently during the bind process. If you bind your transmitter to the receiver in the typical way, SAFE will be off. If you change up the order of the last two steps, you can bind with SAFE turned on.

Bind with SAFE off:
Insert bind plug in receiver.
Power up plane/receiver....Continue Reading
Posted by Prof100 | May 17, 2018 @ 07:00 AM | 3,376 Views
Sanjay Dehall has a dream of making a flying car.

Sanjay’s Dream of a Flying Car (2 min 47 sec)

Below is a short video of a 1/6th scale prototype test flight.
Sanjay’s 1/6 scale flying car prototype 8-15-18 (1 min 51 sec)
...Continue Reading
Posted by Prof100 | Mar 06, 2018 @ 10:56 PM | 3,705 Views
EV800 upgraded with a DVR using the $15 Eachine ProDVR.
I finally added the Eachine ProDVR to the EV800. It requires some soldering skills using a fine tip soldering iron and rosin core solder; a No. 1 Philips screwdriver; and a review of the Youtube video that describes what to do. Four wires are soldered to the board — ground, video, audio, and power. Below is the Albert Kim how to video. Note that he has updated the Youtube page that states the 3.7 volt on board battery is sufficient to power the ProDVR. He also pops out the LED indicator to feed the wires to the board. I liked the LED indicator and opted to drill a hole.

Eachine EV800 Goggles DVR Mod (6 min 45 sec)

Both were purchased over a year ago. And I finally got around to the installation. While the ProDVR says it needs 5v input it operates well with 3.7. Do not exceed 5volts because you will burn it out. Use a filtered in line voltage regulator to step down voltage for 2s and greater battery voltage. In early versions were supposed to permit HD video recording but they forgot to program it in the firmware. More about fixing this in the last paragraph of this post. Newer versions may have the firmware update but I doubt it.

Taking advantage of user selectable video quality
It took more time to set the recording resolution to HD versus the default VGA than to physically wire and install the DVR. Why so long? Answer is simple. The manual was wrong. Manual said to...Continue Reading
Posted by Prof100 | Mar 04, 2018 @ 10:01 PM | 3,618 Views
I have the Eachine EV800 but it did not have a built in DVR or Diversity. So, for $100 I bought the EV800D googles with DVR and Diversity. It has better optics.

The 1200 mah 2S stock internal on board battery runs down in less than hour with the DVD running and Diversity turned on. You can, however, plug in a 3s battery where the charger is plugged in and it will charge the on board battery. I made a 3s lithium ion pack (18650) that is velcroed to the back of the head strap. In sum, this pack is supplemental power for the EV800D goggles made from off the shelf rechargeable yard light batteries made by Westinghouse and sold at Walmart. These are lithium ion low amp draw cells (7 amps). Make sure to charge with the right chemistry on your charger selected, By the way, any 3s pack will do.

DVR Recording and playback
Video is AVI and pictures are jpeg saved on FAT32 card. Reformat the card whether used or new. Far right button controls recording. Short press snaps a picture. Long press and a red record light goes on in the upper right. Light goes off after awhile. Press again to stop and save. A red box appears when saving to card.

To playback press source, menu appears and DVR is highlighted. Quickly press channel band button and select a video or pict. Press record button to start playing.

The on screen battery charge level indicator is worthless. It goes down to one green bar in a few...Continue Reading
Posted by Prof100 | Feb 17, 2018 @ 10:57 PM | 4,515 Views
9-24-18 update—
Below is a reminder about Nano Talon setup.

When setting up the stabiliser in the Dart/Nano Talon or Orbit Wing, use a three position switch , low signal - launch mode when throttle is 20% or more the elevons lift up and it goes into launch/beginners mode
Middle switch position - no stability- nothing just you and the sticks
High switch position- some stability but you have full control.

Calibrating the stabilizer
Also before first use place on a flat level surface, hold the model still and press the calibration button on the stabiliser until the lights flash.

Just a note when creating a model program in your radio’s, do not use mixers for the Zohd range if you are using the supplied stabiliser as they have a built in mixer for the wings and for the V tail of the talon.

Flat wing on board flight with a little Beethoven. With the flat wing and other aero modifications the wing wagging is gone. Adding expo helps with flight characteristics. Launch mode / wing leveling is only used for launch or panic mode. Flight controller aerobatic mode seems like rate mode with some some heading hold. Quite fun.
8 12 18 Nano Talon ONBOARD flat wing (5 min 49 sec)

From bonafidepirate Youtuber—he designed new 3D printed parts to remove the wing dihedral. Doing so eliminates the wing wagging. I had the parts made I insralled them. They were printed using green PETG filament by a friend with hobby grade 3 D printer....Continue Reading
Posted by Prof100 | Nov 29, 2017 @ 10:03 PM | 5,694 Views

Just arrived as part of my 2017 Black Friday Sale purchase. It was $85 shipped from Hobbyking USA warehouse (11/29/17). Free shipping closed the deal for me. Normal price is $117 plus shipping..
  • 900mm (35.4”) wingspan ARF foam plane
    2200 Kv motor with a 6x4 prop
    3S or 4s lipo.
  • Assembly was easy although no glue or instructions were included in the box. The downloaded manual says to use included glue. HK site has a downloadable manual. Beacon RC Foam Tac glue was used. It used to sell for $4 a bottle but it doubled in price a few years ago for what appears as nothing more than a money grab. Servo arms had to be drilled out to accept the clevis.
  • Wing tip skids added to preserve the foam.
  • Reflex was set on the elevons per manual. Throws as published are well over double what is needed per a review at the field today with two other planes. Following instructions for throws and reflex will result in a epic adventure on your maiden flight. Reduced reflex to 0 mm because this design of the red version had reflex built into the wing but the manual was NOT updated. Reduce elevons to 40% of published specs.
  • Short servos extensions required for Rudder and drop gear servos to connect to the receiver. All I need to do is verify CG. I carved out a pocket for the receiver on the starboard side.
  • A couple of coats of pure acrylic protect the surface and I painted the bottom of the plane a bright yellow (Duplicolor) and left two red stripes. This helps with
...Continue Reading
Posted by Prof100 | Nov 27, 2017 @ 10:30 PM | 4,654 Views
My NIB v2 T28 by Durafly arrived today (11-27-17). Box arrived intact. Hurrah for FEDEX. Black Friday pre holiday free shipping closed the sale for me. Total price was about $155 US.

I opened the box and pulled out the wing to test the main retracts with a servo tester. They worked just fine. Doors did not bind, however, I will remove them simply because they prevent checking for bent 3 mm wire struts in the retracts. They are prone to bending that causes the retracts to hang up and fail to function. Wheels must turn freely in the wheel wells.

Foam is excellent. Yellow paint is different than the bright yellow used on Eleven HobbyT28 I also have. This plane has a yellow with a bit more red / orange tint mixed in. I had Lowe’s paint dept. scan the horizontal stab and they made a perfectly matched 8 ounce sample that cost $3.50. The paint only comes in a satin finish whereas the original paint on the plane is a fairly flat finish.

This will take some time to assemble given the control horns require installation which is unusual these days with ARFs. I can strip the self tapping screws as well as the assembler in China.

This plane includes a dive brake and and a FPV mount inside the cockpit. Dive brake will not be enabled to function since it takes up a radio channel. I need two channels for the Guardian mode selection and remote gain.

I will update this thread and take pictures to outline the steps as I assemble it.

Step 1 — Gather the...Continue Reading
Posted by Prof100 | Oct 12, 2017 @ 10:56 PM | 5,323 Views
Good flyer. World Models ARF is a good quality ARF but features like the landing gear are pretty crude. That is, no articulation. The access door is not hinged but rather it is held in with self tapping screws. Wings, of course, are removable for transport and storage but threaded screws and glued in blind nuts are a bit of an adventure to install when fastening the wing.

Setup notes for World Models 1/4 scale clipped wing Cub
  • Front switch is NOT connected because IBEC ignition eliminates a need for an ignition battery.
  • Charge A123 battery using Electrodynamics lead and the rear Electrodynamics switch for charge input.
  • Aftermarket ignition with red light mounted to the lower left front windshield. Tx must be on and Gear switch set to the ON position to run the motor.
  • Kill / ignition switch mapped to gear switch on transmitter. Red light on is to run he engine, no light means ignition is killed.
  • Motor is a DLE 30 side carb with a Bowman ring.
  • RX is a Spektrum DSM2 AR 6200 with satellite bound to my DX8 Gen 1 TX

Posted by Prof100 | Aug 01, 2017 @ 08:21 AM | 6,247 Views
DX8 setup for Guardian on Elevon plane
Note: F22 by Golem with TV tabs. CG is 17.5" from the nose. Below is maiden video back in 2008. FF to about 30 seconds. Video is not edited well but camera work is pretty good. Back in the day it had the state-of-the-art 20C lipo
F22 with KFm2 airfoil -- Maiden -- built by Prof100 (Golem's (5 min 11 sec)

  • EDIT: 8-3-17
  • RANGE TESTS (30 paces to pass per Spektrum)
    • Range tested a basic 2010 vintage 6 channel Orange DSM2 that I optimistically installed in the plane. This RX has one very short antenna and while it has the capability for a satellite RX, none was available. Results -- Test failed at 10 paces. Not good. Conclusion, this RX, as installed is not suitable for use in this plane
    • Swapped out for a twin antenna Orange 6 channel R618XL -- antenna routed on the left side of plane. Left side range check 100 paces. Right side 60 paces. This RX was a 2017 version. One of three I bought on a flash sale for $5 each. It is a "keeper."

================================================== =====================
I am posting this to make it easier for the next person who wants to program their DX8 radio for Guardian use.. Hope this helps someone else. This DOES NOT COVER SETTING UP THE GUARDIAN. The Guardian was already updated with desired firmware and mode preferences prior to programming the radio. Elevon mixing was pre-selected in the Guardian...Continue Reading
Posted by Prof100 | Sep 14, 2016 @ 01:16 PM | 10,372 Views
WARNING or CAVEAT -- With a AR635 this procedure with prevent the stabilization function from initiating.

I spoke to Thomas at Castle tech support. Auto Calibrate of the throttle is the default and theoretically each time you connect the battery you have to go through a calibration. Truth being better than fiction the 2 second wide open throttle calibration is scarey with 2 hp. electric motor spinning a 16 inch prop. So, in practical terms, all you have to do is position throttle at mid point, connect battery, pull to idle to arm the ESC. idle out and then go full throttle for 2 seconds for takeoff. Top end is recalibrated. Don't like using the Autocalibrate default? Keep reading.

You can easily program the Fixed endpoint throttle using the Castle programming card.

This is written from my perspective as a user of a Spektrum DX8 first generation. This is a three part process. Step 1 is to setup the ESC to use fixed endpoints and Step 2 is to adjust the throttle end points in the servo setup Travel throttle setting interface. Step 3 is to bind the receiver again because you need to reset the fail safe.

STEP 1 -- Switching from auto calibrating the throttle to Fixed
First is to connect the card to the throttle lead from the ESC and pressing the lower right button to Throttle (bottom left) and deselecting auto calibrate and selecting FIXED.

STEP 2 -- Adjust throttle end points.
Once Step 1 is completed you then power up the plane normally and adjust the...Continue Reading