SMALL - SMALL - Telemetry SMALL - Radio
hifinsword's blog
Posted by hifinsword | Jan 13, 2015 @ 01:49 PM | 1,759 Views

(ASIDE: I won't be able to update this for a few weeks as of 1/14/15.)
I was looking for a small plane (under 30in wingspan) so I could fly around the yard without going to the park. I already have the Eflite Carbo Cub SS but I was hoping for something I could yank and bank a little more. And it had to be sturdy enough to take a hit. I've been flying planes for a year so I also didn't want a profile requiring a lot of cutting and gluing CF rods. It had to be fairly simple and easy to assemble.

I've had 3 of the Eflite UMX planes other than the CC SS - the P-40, the Mosquito and the F-27 Stryker. The Stryker was durable but too hard for a beginner like me at the time. Still doubt I could handle one. The other 2 are EPS ( I hate it when it dissolves cause I forgot and used regular CA) foam and I found both very tail heavy. So I ruled out anymore UMX planes from Eflite for the time being.

This little Dynam Rapid caught my eye so it turned into my Christmas present a few weeks ago.

I did a search for it here at RCGs and only found 2 threads about it, both posted by Nitro_Nancy from NP. I think she forgot she posted one and posted the identical thread 2 days later. So there...Continue Reading
Posted by hifinsword | Dec 09, 2014 @ 09:13 AM | 2,520 Views
POST 1 - Table of Contents
POST 2 - Various Protocols used in RC
POST 3 - Futaba protocol
POST 4 - Walkera protocol
POST 5 - FrSky protocol
POST 6 - FlySky protocol
POST 7 - DSM2 & DSMX (Spektrum) protocols
POST 8 - Cheerson (YD717 protocol)

Protocols are independent of frequencies.
The major frequency bands used in RC are the CB band and now the 2.4GHz band. The CB band includes the fixed frequencies around 27 and 72MHz. The 2.4GHz is a new frequency band and is used with frequencey hopping protocols. Protocols can be used on any frequency and have to do with how signals are formatted. Each protocol has its differences.

That is why you cannot use any Tx with any Rx or model you decide to buy. This thread assumes you already know the differences between RTF, BNF, Tx-R, Rx-R, RR, ARF, KIT, PNP, etc and the implications for your Tx and Rx combinations. If not you may find my entery here helpful.

The 2 major Channel sequences:
This pertains mainly to how receivers (Rxs) are set up. Channel sequences may be assignable for different transmitters (Txs), especially the newer computerized models. Older Txs like the Spektrum DX6i follow the same sequence as their Rxs.

Spektrum uses TAER versus AETR by Futaba on the first 4 channel assignments. This was my first rude realization when I learned about the different choices.
I have no idea what other protocols use but all the channel sequences I have been...Continue Reading
Posted by hifinsword | Oct 04, 2014 @ 09:41 AM | 3,781 Views
Disclaimer, etc. I received these parts independently and am not employed or compensated in any way by Heli-Factor or Hobby-Direct or anyone else to review these products. I have not had any direct or indirect contact with any interested party to promote these products. This is a completely independent review by me and hope it may help anyone interested in them.

This is a forum for the Heli-Factor aluminum upgrade parts for the WL Toys V913 helicopter. Comments are welcome. I will try to update the first 5 entries here as new info becomes available in order to keep it current.

Anyone interested in the V913 should also visit my blog here:

and the V913 forum here:


POST 2 - ASSEMBLY & INSTALLATION Heli-Factor CNC Aluminum Swashplate, Rotor Hub & Main Blade Grips for the WLToys V913

POST 3 - POST INSTALLATION Heli-Factor CNC Aluminum Rotor Hub for the WLToys V913

POST 4 - POST INSTALLATION Heli-Factor Aluminum Main Blade Grips

POST 5 - POST INSTALLATION Heli-Factor Aluminum Swash Plate for V913

This is a review for the new Heli-Factor CNC aluminum parts for the WL Toys V913. They are sold by The Heli-Factor (HF) team has manufactured the new V913 parts using 6061-T6 aluminum alloy, and stainless steel linkage balls.

V913 CNC Aluminium Rotor Hub
Model : HFV91301 - $9.80
http://...Continue Reading
Posted by hifinsword | Sep 30, 2014 @ 09:52 AM | 3,180 Views
Your comments concerning any new products or data about the V913 here are welcomed. They can be incorporated for inclusion to help build a single point of reference. I intend to update the first page as a data source reference on the WL Toys V913.

Any questions or problems with the V913 should post them about the the V913 on that forum here:

I have arbitrarily defined 3 versions of the V913. Why? Because it has gotten so confusing as to which model parts are compatible with each other. This applies mainly to the BL motors and the BL ESCs and their corresponding PCBs. Hopefully this forum can help sort out the differences in the models offered.


POST 2 - GENERAL STATS on the WL Toys V913.

This is sort of a mini-history as well since the V912 came out before the V913. Often times V912, and now (as of Dec 2015) V915 parts can be interchanged and purchased cheaper than identical parts with different SKUs at BG.

POST 4 - NON-PROGRAMMABLE TXs for the WL Toys V913
(& V911, V912, V915, V9x9 Quad series, F9x9 Plane series).

POST 5 - THE 3 VERSIONS of the WL Toys V913.


POST 7 - Converting V913 Version A (Brushed) to Version B (Brushless)

POST 8 - Adding bullet connectors to the V913 ESC and BL Main Motor (Model 1612) wires

POST 9 - Balancing the main blades
...Continue Reading
Posted by hifinsword | Jul 22, 2014 @ 11:58 AM | 3,498 Views
This is a short description of types of foam used in the RC hobby. I've also included a link to a great forum for foam suppliers.

Foam suppliers.

Types of Foam

Depron - very light weight, brittle; NOTcontact cement safe. DO NOT use Welders Adhesive or forms of contact cement with Depron.

Elapor - blended EPS & EPP

EPO (Expanded Polyolefine) - Horizon Hobby (HH) calls their form of EPO, Z-foam.

EPE (Expanded Polyethelene)

EPP Expanded Polypropylene - (pool noodles) low structural strength; covers with low temp coverings; shipping tape does NOT stick to very well; use a spray adhesive or FoamTac with blemderm, fiberglass tape (drywall type), NexCare, clear surgical tape to reinforce surfaces; breaks clean, high compression strength, poor tension strength; comes in 1.3#, 1.9# densities; Compatible with Epoxy, Regular CA or Goop glues and Acrylic paint;

EPS Expanded Polystyrene - high structural strength; sensitive to heat, CA, polyester resins; Compatible with Epoxy or Polyurethane glues; comes in 1#, 1.5#, 2.0# densities; HH uses EPS on most or all of their UMX airplanes. Do not use CA on EPS unless it is foam-safe.

XPS Extruded Polystyrene

FFF - acronym for Fan Fold Foam (more commonly used as an acronym for Fast Forward Flight)

Z-Foam - (Horizon Hobby) does not require Foam-safe glue; regular CA is OK.
Posted by hifinsword | Jun 10, 2014 @ 03:45 PM | 3,574 Views
Recharging LiPo batteries - the 80% rule applies to the storage capacity or AMPERAGE of the BATTERY, NOT THE VOLTAGE of a battery. For a 1500mAh battery that means it should not be discharged more than 1200mAh (0.8x1500 = 1200, or 80% of 1500mAh). You won't know that until you recharge the battery. A good charger will tell you how many mAh it took to completely recharge the battery back to 4.2 volts per cell. It should then be at the full capacity of 1500mAh.

A good rule of thumb to use for how far to discharge or fly a battery, is the nominal voltages associated with each cell, i.e. 3.7 volts per cell. If you don't go below 3.7 volts per cell, you won't hit Low Voltage Cutoff (LVC) and damage your LiPo battery. Go below the LVC and you will most likely be putting back more than the 80% amp carrying capacity of your battery - NOT GOOD!

If you think you will be staying with this hobby, I recommend buying a quality BALANCE charger and stop using the cheap stock chargers that come with most RTF, ARF & BNF combos. They are OK in a pinch or on a trip where you don't want to carry a full blown charging setup. I won't recommend a charger or brand. New ones come out all the time but a good place to start is searching RCGs, or go to sites such as John Salt's for suggestions.
Posted by hifinsword | May 28, 2014 @ 03:41 PM | 3,846 Views
Although your comments here are welcomed, anyone interested in the V913 should post questions about the the V913 on that forum here:

I am using the FX052 tail motor and assembly rather than the stock V913 motor and assembly on both my V913s currently. One is on a raised and extended CF tail boom. The other is on a stock metal V913 tail boom.

The FX052 tail main and pinion gear sizes, and gear ratio allows the tail motor to work more efficiently than the stock V913 tail motor gears. I'm hoping it will last longer than the stock motor. I have 31 and 12 flights on each as of 12 June 2014.

I feel the FX052 tail motor gives me better tail control. The V913 tail boom is 10mm and the FX052 tail boom is 12mm so the replacement assembly needs to be shimmed onto the 10mm boom. Steve_ discusses the FX052 tail motor and assembly more here on Page 161 Post 2404:

To use the FX052 tail motor you must also use the FX052 tail gear assembly. The tail motor mounts (screw holes) and the pinion gear are different from the stock V913 gear assembly. The FX052 tail motor pinion gear is too large to fit thru the opening of the V913 gear housing.

The FX052 tail gear assembly fits on a 12mm tail boom and the V913 uses a 10mm tail boom. Before you shim the FX052 tail gear assembly onto the V913 tail boom, you must melt a hole in the left side of the gear assembly to match the...Continue Reading
Posted by hifinsword | May 13, 2014 @ 06:08 AM | 4,754 Views
Although your comments here are welcomed, anyone interested in the V913 should post questions about the the V913 on that forum here:

These are the mods made to my #1 V913.

1) Swashplate mod. Hot glue and paper clip mod discussed in detail here:
The new Heli-Factor aluminum swashplate (and main rotor hub & main blade holder) are discussed in my blog here:

2) A new extended carbon fiber (CF) tail boom with raised tail motor mount was installed to be parallel with main motor shaft.
Boom and reinforcements to angle are CF tube and strips. The tail boom was extended about 1 inch, has 1mm thick sidewalls and is 10mm in diameter. The CF reinforcing strips are 4mm wide and 0.6mm thick. Horizontal stabilizing rods and vertical fins were removed initially but were reinstalled after about 5 months. The torque from the tail motor twisting the CF boom resulted in stress fractures starting to show up.

The details are discussed in my "Mini How To" blog here:

3) Tail motor and gear assembly are from the Feilun FX052 helicopter. Some more info here:
and here Steve_'s post here:

With the conversion to a BL main motor, the torque is at the...Continue Reading
Posted by hifinsword | Mar 30, 2014 @ 03:53 PM | 4,786 Views
Although your comments here are welcomed, anyone interested in the V913 should post questions about the the V913 on that forum here:

I wrote this blog hoping it might help others when using a 3S batt on the V913. This blog entry is for using a main motor that is designed to run on 3S batts instead of the stock 2S batts. That means I did not use the stock motor or the F45, E-1003, or any 370/380 size replacement motors we have been using. They are all designed for 2S voltages.

I initially hoped a 3S compatible motor could be made to work with the existing PCB that is limited to 5.5 volts. I found some main motors compatible with 11.1 volts but the PCB is still the limiting factor in this conversion.

A. THE Xtreme 380X vs SUPER 370 MAIN MOTOR
I used both the Xtreme 380 BB motor and the HB Super 370 motor. Even though both motors have improved power over the stock motor, the 370 Super motor seems to be the more powerful motor. I ran the Super 370 main motor for 10 flts on 3S. In a crash it burned up the PCB. That motor is still in my Bird #2 as of 1/18/2015 running stong on 2S with 30 total flights on it as of 1/18/2015.

The Xtreme 380X was still running strong as of 8/9/2014 with 24 total flts on it, 19 of them on 3S. I replaced it at that time with a BL motor. It's still in my inventory. or
...Continue Reading
Posted by hifinsword | Feb 21, 2014 @ 12:46 PM | 4,240 Views
To parallel charge any batteries, you will need a charger with a power supply (can be included or added on) and a parallel charge cable/board. I don't remember where I bought my ready-made parallel charging cable but should have them. A balance cable won't do you any good until you start using multiple cell batteries. A parallel charge cable is all you need for 1S batteries since there is no balance plug on 1S batteries.

When I charge multiple 1S or any batteries for that matter, always bring them up to the same voltage first before plugging them in. For instance, if I have 3 batts, 1st is at 3.71volts, 2nd is at 3.80volts and the 3rd is at 3.94volts, I put the 1st one on and charge to 3.8ish (within 0.1 volts). At that point I stop the charging and add the 2nd battery. When the 1st and 2nd are close to 3.94volts I stop the charging and add the 3rd battery and charge to 4.2volts.

If all the batts are 500mAh batts, I can charge at 1C using 1.5Amps or 1500mAh on the charger. I usually charge less than 1C to keep the heat down and extend the batt's life. But if doing the above procedure and starting with the 1st batt alone, I start at 300 or 400mAh until the 2nd batt is added. Then you can increase the amperage to whatever you calculate the rate you want. With 2 x 500mAh batts, I would charge about 700mAh and after adding the 3rd batt I would bump up the amps to about 1200mAh. The total at 1C would be 1500mAh or 1.5Amps but I prefer less than 1C.

Higher rated...Continue Reading
Posted by hifinsword | Feb 21, 2014 @ 12:01 PM | 4,752 Views
This entry is now incorporated into my Blog as POST #12 in my blog thread entry here on "Reference Source for the WL Toys V913 helicopter" :

Discussion: This procedure is intended for Fixed Pitch (FP) helos pilots to set up their helo to fly a stable hover relatively hands-free. It is for helos with only 2 servo links to the swashplate. You should always trim your helo mechanically before using the electronic trim features of your transmitter (Tx).

Generally Collective Pitch (CP) helos must have a level swashplate. This is NOT the case for FP helos. Many first time FP pilots try to level the swashplate of their FP birds. A level swashplate may, or may not allow your FP bird to hover hands off. What is important is whether or not you can enter a stable hover hands-free with your FP helo, regardless of the swashplate position, level or not.

There are FP conversions helos that have FP heads on CP frames, and have 3 servo links to the swashplate. This procedure does not apply to them or CP helos.

Step 1: Zero out any trim to the Aileron (AIL) and Elevator (ELE) on the transmitter (Tx) controls. If the Tx has sub-trim in a menu or sub-menu setting, zero that out also.

If you are only adjusting for drift, skip to Step 3. This assumes servo arms are already adjusted at 90 degrees to direction of travel on all servos.

Step 2:
(WARNING: If replacing servos, do not attach servo arms to servos, or...Continue Reading
Posted by hifinsword | Feb 12, 2014 @ 06:58 PM | 3,169 Views
John Salt's site on Helicopters. Great info for the beginner.

Model Airplane News tips on Electric Flight. More great info for the beginner.

Balancing Main Blades on a Helo
This is my favorite link for a 'how-to' when it comes to a cheap method of balancing main blades on a helicopter. It is a blog entry on Chap1012's blog.

CaptJac's "3D is NOT for everyone" forum on RCGs.

NoFlyZone's "Beginners Guide to Motor and Prop Selection" forum on RCGs.

FliesLikeABeagle's software to pick motors and props.

Sandancer's Build Log on the Schottky Bus-Tie Circuit.

HeadUpRC's link to airplane props.

by Ed Anderson
aeajr on the forums

"JST" connector confusion - the real story by John i.e. jj604 on RCGs.
Posted by hifinsword | Feb 12, 2014 @ 06:33 PM | 3,158 Views
There are some terms newbies may not be familiar with so here they are.

The terms here may be proprietary to Horizon Hobby, FlyZone, etc.
BL = BL as in a BL motor vs a Brushed motor
FBL = Flybarless, lacking a flybar
Tx = Transmitter
Txs = Transmitters
Rx = Receiver
Rxs = Receivers

Variations of Models or Rxs sold in various states of completion
RTF = Ready To Fly; comes with a Tx, Rx, battery, charger, servos, motor & ESC (if BL)
BNF = Bind N Fly; comes with a Rx; same as PNP
ARF = Almost Ready To Fly; does not include a Rx; may or may not include servos, motor or ESC
PNP = Plug N Play; comes with servos, motor & ESC (if BL) BUT no Rx
KIT = does not include a Tx, Rx, battery, charger, servos, motor or ESC
Rx-R or RR = Receiver Ready; same as PNP; no Rx
Tx-R = Transmitter Ready; same as BNF; Rx included
Brick = All-in-1 Rx; can be a 4-in-1 or a 3-in-1. Bricks can include the Rx, some servos, an ESC and/or a gyro.

Retailers and/or manufacturers
BG =
FZ =
HH =
HZ =
MM =
PZ =
PZ = Ping Zheng, a manufacturer of products sold by HobbyKing

Common acronyms:
WOT = wide open throttle
FFF = Fast Foward Flight
FF = Free Flight or Fast Foward
Posted by hifinsword | Feb 12, 2014 @ 06:18 PM | 3,191 Views
Charging Calculator This link shows the time it takes to parallel charge multiple batteries and gives the charger requirements.

2ZO - RC modular Power Supply

5 Outlet Universal Charge Cable from has a blank pair of wires plus 4 most popular connectors (EC3, Deans, XT60, 4mm bullet) $6.95 compared to TaildraggeRRC has a 24" w/JST plug (gold-plated banana, Silicone main 10AWG) $15.99

Cheap Battery Tester / Indicator $3.10 [/B]at SKU071659. Face the balance or charge connector so you see the metal pins in the plug. Use left most pins on tester in plugs of battery with tester facing you so you can see the readout. This only gives you a voltage, no alarm.

Cheap Battery Alarm / Indicator $4.25 at SKU014552. Button on top changes alarm threshold. This gives you a voltage readout and an audible alarm at whatever voltage you set for the alarm.

Bench testing servos
I've found these 2 items worth it for bench testing servos. If you are having servo problems, this will help determine if it's the servos, or something else causing problems.
Servo Tester $4.10
Battery box with 3 wire standard servo connector $1.81
Posted by hifinsword | Feb 10, 2014 @ 08:03 PM | 4,374 Views
This POST in my blog is in the process of being incorporated into my blog on the 3 versions of the V913, post #4 of that blog. If you find the link to this page in the V913 thread, please notify me so I can change it before deleting this blog.

This blog is for the original brushed version of the V913 and V912. Both share some common parts. They use the same Tx, main motor, tail motor and PCB.

WL Toys transmitters (Txs):
First in the discussion is that FlySky is a manufacturer as well as the name give to the FS (FlySky) protocol. The problem with just any FS Tx you choose is that although it may be compatible, it may need channels reversed to control a particular aircraft. None of the stock Txs AFAIK that come with these helos, planes, quads, etc. have channel reversing capabilities. Upgraded Txs with channel reversing are capable of controlling the V913 or V912. Any WL Toys Tx made to control the V911 or the V9x9 quads or the F929 & F939 airplanes, are also compatible with the V912 & V913 PCBs (Rxs) since they all use the same FlySky protocol.

Alternate transmitters (Txs):
Any FlySky protocol Tx made by other companies may be capable of controlling the V913 if the channels are correct for direction or the Tx allows channel reversing. The programmable Txs like the DEVO line (Walkera) that have been hacked to also use the FS protocol can be used. See for more info. Some of the FlySky models are the FS T-6, FS CT6B, FS-CT6X, FS
...Continue Reading
Posted by hifinsword | Feb 10, 2014 @ 10:31 AM | 2,805 Views
I posted the follwing below on the V912 forum as a recommendation to anyone wanting a cheap programmable Tx. The link to it is at the bottom of this blog entry.

The DH 9116 Tx uses the FlySky protocol used by many of the Chinese makers of helos such as Syma, Double Horse, FlySky, Xieda and WL Toys and I believe many others. It's not a 9X by any means, but will allow the beginner to at least reverse channels and set Expo and end points. It has only 1 memory feature.

"If you want to be able to save any settings and not spend a bunch on a Tx, get the DH9116 Tx for $7 at HobbyPartz.
It's not the best Tx and you may even have to send it back due to poor soldering, or do some yourself, but it is cheap, and better than the V91x Txs for saving settings, setting Dual Rates, end points beyond 100% and reversing channels. But it is only 1 model memory saved.

Just reverse AIL & RUD from the stock settings to fly the V91x helos with it. Here's how:
If you want the entire manual, see page 3 for settings on the DH9116 Tx here:

I have 4, 2 of which I paid for. Two came with an unusable trim on a channel. They sent me a replacement one for free. I use one for my DH9116, one for my V911 & V913, 1 for my Xieda 9958 and one for spare parts."