1. Power Module - For VMA-T210X Twin Otter - Brushless Motor, ESC & Firewall
1.1. Power Module - #VMM-T210XPM1 For VMA-T210X Twin Otter - READ ME FIRST

PLEASE READ ME FIRST

BEFORE PROCEEDING TO ASSEMBLE OR OPERATE THIS PRODUCT

 
 
LIABILITY DISCLAIMER & COPYRIGHT NOTICE

LIABILITY DISCLAIMER

The authors and/or suppliers and/or disseminaters of this information and/or product expressly disclaim any warranties or representations, either expressed or implied, including but not limited to implied warranties of fitness, accuracy, timeliness or applicability of the information and/or product provided here. In no event will the authors and/or suppliers and/or disseminaters of this information and/or product have any obligation arising from contract or tort, for loss of revenue or profit, or for indirect, special, incidental, consequential or other damages of any sort arising from this information and/or product. In using this information and/or product, the user accepts all responsibility for and all liability associated with such use.

PROCEEDING WITH THE USE OF THIS INFORMATION AND/OR PRODUCT INDICATES AGREEMENT WITH AND ACCEPTANCE OF THE LIABILITY DISCLAIMER.
 
Please Note the following Caution

CAUTION

A Remote Control (RC) model aircraft is not a toy. It is a flying model that functions much like a full size airplane. If you do not assemble and operate model aircraft properly you can cause injury to yourself and others and damage property. DO NOT FLY a model aircraft unless you are qualified.

You are ultimately responsible for the mechanical, aeronautical and electrical integrity of any model you fly and all of the components that make up the model including but not limited to the airframe itself, control surfaces, hinges, linkages, covering, engine, motor, radio, servos, switches, wiring, battery and parts. Check all components before and after each flight. It is essential that you act with the clear understanding that you are solely responsible for all aspects of the model at all times. DO NOT FLY until it is right.  

 

1.1.1. Think Safety
When working with Batteries, Electric Models, Motors & Propellers, Chargers & Electrical Devices
 

ALWAYS DISCONNECT THE BATTERY 

or other electrical power source from any motor, device or charger when transporting, storing, not using or when you are not in attendance.
 
Keep hands, tools, clothing and all foreign objects well clear of equipment prior to and during operations. Take particular care to safeguard and protect your eyes and fingers and the eyes and fingers of other persons who may be nearby.
 
STAY CLEAR OF PROPELLER. PROTECT YOURSELF & OTHERS AT ALL TIMES
 
Use only a good quality propeller that has no cracks or flaws. Ensure propellers are securely attached. Stay clear of the propeller and stay clear of the plane of rotation defined by the propeller prior to connecting your battery to any motor or power system.
 
 
1.1.2. Power Module - For VMA-T210X Twin Otter - General Information
COPYRIGHT
Copyright Richmond RC Supply Ltd. All rights reserved.
 
Tips for Avoiding Common Problems

We have supplied thousands and thousands and thousands of model aircraft in the past 20 plus years. We're not bragging! We tell you this to give some credibility to our suggested list of tips that follow. In talking to modelers around the world, here is what we have found is the key to... 

AVOIDING 90% of PROBLEMS that can arise:  

  1. READ THE CAUTION ABOVE & READ THE LIABILITY DISCLAIMER.You are responsible for all aspects of any model you fly. You're It!
  2. READ ALL DOCUMENTATION before doing anything else! 
  3. INSPECT CAREFULLY immediately upon arrival!.
  4. RETAIN ALL PACKAGING until the checkout is complete! If you need to return anything you must have all of the original packaging.
  5. READ & LOOK! At everything! Do it once & then do it again.
  6. REMEMBER WHAT "ARF" STANDS FOR. ARF means ALMOST Ready to Fly with an emphasis on ALMOST! Some assembly and modeling skills are required.
  7. ALLOW ENOUGH TIME to enjoy the assembly process! Rushing into a 6 hour job with 3 hours to spare simply will not work. This is a Hobby... take your time.
  8. DRY FIT & TEST ASSEMBLE EVERYTHING before you glue anything!
  9. USE 30 MINUTE EPOXY when joining wings & installing stabilizers and other structural components but only after you have dry fitted and test assembled the components without glue! Once parts are glued together they cannot be unglued and they cannot be returned or replaced without charge.
  10. PLAN AHEAD! BE CAREFUL! If you get into trouble, DON'T PANIC. Review everything again, talk it over with an experienced modeler and if still in difficulty consult our Support Services.
  11. TEST TEST!!! TUG TUG TUG!!! EVERYTHING... BEFORE & AFTER EACH FLIGHT! Your model may have been largely pre-constructed and may have pre-installed control rods, hinges, control surfaces and many other essential components. Hinges may have been pinned after they have been installed. However, you must double check every control surface and component before and after each flight. You and only you are responsible for the integrity of all components and the integrity of the model itself. Check everything before and after each flight. Tug on control surfaces, control rods, mounting bolts, T-nuts, mounting plates... tug on everything!
  12. DO NOT OVER TIGHTEN WING BOLTS or other fasteners. You want bolts and nuts snugly tight and if metal you can use a medium grade thread locker such as Pacer Z42 to help them stay tight. Fasteners must be snug and secure. However a model airplane is not a farm tractor or a garbage compactor. You do not need a pipe wrench or an electric drill to tighten up wing bolts or any other fastener. Leave your plumbing and power tools at home.. hand tools only and go easy on the torque... snug and secure... not stripped or torqued until they squeak or break.  Wing bolts can take tremendous torque before breaking... but when you over tighten them or use an electric screw driver on a set of wing bolts, long before the bolts break you can fracture the fuselage, crack the mounting blocks or pull the heads of the bolts through the wing... these problems have a nasty habit of revealing themselves when you least expect the wing to fall off!
  13. DO NOT OVERPOWER ANY MODEL! Stay within the recommended power range for the model. If you overpower the model you run a high risk of structural failure that will lead to loss of control and a subsequent crash that will destroy the model and may cause injury and/or property damage.
  14. ASSUME NOTHING! Remember the old yarn about what happens when you ASS-U-ME something. Check everything repeatedly and frequently and DO NOT FLY any model unless you are satisfied that everything is in good working order.

 

1.1.3. Power Module - For VMA-T210X Twin Otter - Introduction
 
 
Before beginning the Installation Instructions please read the Overview and check off the components provided. Each component is in a labelled parts bag. Please check off the components against the Contents list below. Leave the components in their parts bags for now. Do not remove the components from their parts bags until each is needed during the installation process. 
 
Power Module Set - For VMAR Electric Models - Overview
VMAR Power Module Sets are intended for modelers who already have their own Li Po Battery, Servos, Props and wiring systems but who wish to purchase an easy to install power system including the firewall(s), motor(s) and speed control(s) that have been factory designed for and tested with their VMAR model.
 
1.1.4. Power Module - For VMA-T210X Twin Otter - Contents
This VMAX Power Module (#VMM-T210PM1) contains the following
  • Two power pylons, each consisting of:
    • Laser cut wood power module firewall assembly (#VMA-T210XPMV)
    • Brushless Motor (#VMM-111B18VM)
    • Propellor mounting hardware
    • Electronic Speed Control (ESC) (#VMC-120B15VC)
    • Wiring between the Motor and the ESC
    • Wiring leads from the ESC to provide Positive (+) power, Negative (-) power and throttle control
    • All components have been factory installed, connected & tested.
  • Crimp on bullet connectors (female) for the ESC power feeds  (2 Red, 2 Black)
  • Documentation
 
 
 
 
1.1.5. Power Module - For VMA-T210X Twin Otter - Installation Instructions
 
 
Consult any labels carefully, particularly the larger WARNING labels. The labels are largely self explanatory. Reading the labels will save you a great deal of time and help prevent damage to your equipment.
 
 
1.1.5.1. Stage 1 - Install Power Pylons - For VMA-T210X Twin Otter
 
a) Review the Read Me First documentation and the Assembly & Operations Manual that came with your model.
 
b) Complete Stage 0 from the Read Me First document.
 
c) Complete Stage 1 from the Assembly & Operations Manual, substituting the two assembled power pylons that came with your Power Module in lieu of the "Engine Mount"s illustrated in 1A, 1D & 1G of the Assembly & Operations Manual.
 
d) Once completed you will have assembled the wing and attached the power pylons.  
 
1.1.5.2. Stage 2 - Power Module Wiring - For VMA-T210X Twin Otter
 
a) Review the Read Me First documentation and the Assembly and Operations Manual that came with your model. Continue with the assembly procedures provided therein.
 
b) When you are ready to begin Stage 9 of the Assembly and Operations Manual pause and review Stage 9 and these notes carefully.
 
c) Stage 9 of the Assembly and Operations Manual covers the installation of the electric motors and speed controls. In effect by purchasing a VMAX Power Module you have avoided much of this work. Consult the illustrations 9A through 9F for reference purposes but you can skip the work itself.
 
d) You will need to do the wiring.
  • If you have purchased the VMAR Wiring Harness Set for this model (VMA-T210XWHS) please see the detailed wiring instructions provided therein.
  • If you do NOT have the VMAR Wiring Harness Set for this model you will need to use your own wiring setup. Make sure whatever you do is compatible with your radio system, your servos, your battery and the speed controls.
    • Note: Modelers who are not experienced with multi-motor electric flight systems are strongly encouraged to use the VMAR Wiring Harness Set applicable to their VMAR multi-motor model. Scratch building and installing a reliable wiring harness set for a multi-motor electric model requires approximately 8 hours of work & considerable knowledge and experience.    
  • Figure 9M of the Assembly and Operations Manual shows a generic wiring schematic that may be helpful. Be particularly careful with the thin red wires coming from the Electronic Speed Controls (ESC).  Figure 9M shows these joined together between the ESC's while only the Negative (-) and Signal  wires run to the throttle channel of the receiver. This may or MAY not be suitable for your receiver. You will need to nail this down before connecting anything. The most common setup today is to NOT hook the red wires from the ESC to themselves or anything else. Just work with the Negative (-) and Signal wires from the ESC's all the way to the throttle channel on your receiver.
  • To add some complexity to the ESC wiring, there is no standard color schema used by all radio manufacturers. Caution is a must. To help you design and connect your wiring please see the generic wiring information provided in the Read Me First information that came with your model and reprinted below for your convenience. This should be considered a guideline only.
    • Note: There are some risks here and if you are not electronically inclined you should get help and consider purchasing the VMAR Wiring Harness Set for this model.  
 
 
VMA-T210X Twin Otter 09-15 ARF - Electric Power - Wiring
Question: My VMAR VMA-T210X Twin Otter 09-15 ARF uses two motors. How should I wire these up so that I can control them from the single throttle channel on my receiver?
 
Answer: The simplest solution is to use our VMAX Power Pack which comes with brushless motors, electronic speed controls (ESC), battery pack, propellors etc and includes a custom made Wiring Harness Set for the Twin Otter power and control system. The Power Pack for the Twin Otter is #VMM-T210XPP1.
 
If you have your own motors, servos, speed controls etc that you intend on using in the VMAR Twin Otter the manufacturer of these electric components is your best bet for advice on operating in a Twin Power configuration. The Wiring Harness Set for the Twin Otter (#VMA-T210XWHS) is available as an aftermarket accessory and in most installations will make it much easier to work with the VMAX Power Module, third party motors, speed controls and servos.
 
If you have purchased the VMAX Power Pack for the Twin Otter (#VMM-T210XPP1) please follow the installation instructions that come with the Power Pack. The VMAX Power Pack will save you hours and hours of time and greatly reduce the chances of making an expensive mistake.
 
If you are using third party power components, follow their instructions. In the absence of specific information from the manufacturer here are some general tips that may assist you. Remember, without specific information from the supplier of your Motors and ESC, you run the risk of doing something wrong and such booboos are usually expensive. Use our tips with this in mind. We can't verify that these tips will work with third party equipment and strongly encourage you to obtain information from the manufacturer of your Motors and ESC.
 
a) Use two idential Brushless Motors and two identical Electronic Speed Controls (ESC). Each motor should have its own speed control. (see footnote below)
 
b) Connect each ESC to a Brushless Motor using the color coded wire as a guide. Test and ensure that the motor turns in the direction expected and that thrust is aft of the motor.
 
c) Make a power Y-connector to feed power from your LiPo battery to the power input leads on both of your ESC's. 
 
d) Use the power Y-connector to connect the power input to the ESC's to a common (1) LiPO battery source.
 
e) Make a throttle Y-connector. This is necessary for DUAL ESC operation which assumes that you are using two motors and two ESC's.
 
For DUAL ESC operation use ONLY the NEGATIVE (-) Power (usually black or brown) & SIGNAL lines
(see table below) between the receiver throttle channel and the ESC's.
 
Do NOT use the POSITIVE (+) Power (usually Red) wires.  
The following table serves as a guide to common radio systems and their wiring schema and color usage. Use this table with caution. If in doubt, please defer to information provided by your radio supplier.  
 
RADIO BRAND NEGATIVE (-) SIGNAL
VRS & Futaba Black White
Airtronics Z Black Blue
JR Brown Orange
HiTec Black Yellow
f) Plug the ESC throttle control wires into the ends of the throttle Y-connector
 
g) Plug the remaining single end of the throttle Y connector into your receiver throttle channel.  
 
h) Use the airborne battery pack from your radio system to power your receiver. Do NOT attempt to use power from either BEC to power your receiver. You may wish to consider using a stand alone BEC such as that from Western Robotics to power your radio system but do NOT use the BEC's that are a part of many ESC's. They will not work in a twin power configuration.
 
i) Select suitable propellers for your motors and your speed controllers. The two props should be identical. Prop selection is vital with brushless motors. Overloading the motors and ESC by using the wrong prop can get very very expensive in a big hurry.
 
j) Verify that you can control the RPM of the motors via the receiver and that they produce similar RPM and thrust throughout the throttle range.  
 
Footnote: There are some dual ESC's that enable you to control two Brushless motors from one ESC. These eliminates the need for a second ESC and may make the installation of third party components simpler. If you are using a dual ESC, ensure that you follow the manufacturers instructions regarding wiring and operations.
 
 
 
1.1.6. Power Module - For VMA-T210X Twin Otter - Operating
 
 
Consult any labels carefully, particularly the larger WARNING labels. The labels are largely self explanatory. Paying attention to the operating limits will help prevent damage to your equipment.
 
We developed this Power Module as a "system" suitable for your model. We strongly advise against changing any component within this system. If a component requires replacement, ensure you replace it with a new but identical component to that which is being swapped out.
 
 
1.1.6.1. Propellers - Power Module Operations - VMA-T210X Twin Otter
 
a) See the Warning label on the firewall. Do NOT exceed the maximum propeller size noted.
 
b) With power disconnected, double check the propeller to make sure it is not damaged or nicked in any way and that it is securely and safely mounted. Check before and after each flight.
 
c) Ensure the propeller turns true (no wobble) and that it is balanced and that all propeller fasteners are tight.

USING THE WRONG PROPELLER &/or OPERATING WITH EXCESSIVE VIBRATION WILL DESTROY THE MOTOR.

d) Ensure that your propeller is rotating clockwise when viewed from behind (looking forward as if you were in the cockpit) and that the prop is blowing air from the front of the model to the back.
 
f) If the propeller is rotating clockwise when viewed from behind but air is flowing from the back to the front of the model, the propeller is mounted on the motor backwards. Check and reinstall the propeller correctly. In general the brand logo and other writing on propellers should face forwards.
 
g) If the propeller is rotating backwards, reverse the black and white wire connections between the motor and the electronic speed control.
 
1.1.6.2. On the Ground - Power Module Operations - For VMA-T210X Twin Otter
Operating the brushless motor on the ground or in a static mode whereby the aircraft cannot move, puts peak loads on the motor while not providing adequate cooling normally generated in flight. Peak loads coupled with inadequate air flow leads to very rapid heat buildup within the brushless motor that can damage or destroy the motor very quickly.
 
ENSURE ADEQUATE COOLING. DO NOT OPERATE AT HIGH THROTTLE ON THE GROUND FOR LONGER THAN 10 SECONDS.
 
 
1.1.6.3. Powering Up - Power Module Operations - VMA-T210X Twin Otter
 
a) Move your throttle stick all the way down to 0 (no power).
 
b) Turn on your transmitter
 
c) Turn on your receiver.
 
d) Ensure the model is held securely in order to test the motor system. Tie it down or hold the fuselage at the back.
 
STAY WELL CLEAR OF THE PROPELLER AND PLUG IN YOUR BATTERY.
 
e) Advance the throttle on your transmitter
 
f) The Electronic Speed Control (ESC) will apply power to the motor and the prop will begin to rotate. Very briefly advance the power to full throttle to ensure the motor spools up to full power. Do this for no more than 2-3 seconds at a time.
 
g) If the ESC beeps rather than makes the motor turn it is because the ESC is being powered up with the throttle stick at a non-zero position. This is a safety feature to prevent rotation of the prop unless you begin from a zero throttle position after each power up.
 
1.1.6.4. Motor Power Auto-Cutoff - Power Module Operations - VMA-T210X Twin Otter
The Electronic Speed Control (ESC) has an embedded "auto-cutoff" controller that will reduce battery power supplied to the motor as the battery reserve begins to run out. This auto-cutoff controller ensures that the battery retains sufficient energy to power the receiver and servos. As the energy reserve in the battery approaches "empty", the auto-cutoff begin to reduce power available for the motor while allocating the remaining energy to provide power for the receiver and servos so that you can maintain flight control using the remaining energy.
 
Land immediately when you detect that the motor power is beginning to fade. Once the power begins to fade, you have a very short time remaining before the ESC will auto-cutoff power to the motor.
 
1.1.7. Power Module - For VMA-T210X Twin Otter - No No's & Must Do's
Motors - No No's - That can Destroy Your Motor

Question: Are there any No No's that I should be careful to stay clear of when running my Brushless Motor?

Answer: We have sold many many brushless motors.  From the questions and service requests we get we can pretty well sum up the No No's and Must Do's as follows:

a) Read Everything First! Every instruction! Every Warning Label! Browse our Knowledge Base while you are at it. About 90% of problems can be avoided by Reading First.

b) Do NOT screw up the electrical connections! Polarity is important. If you are not sure, figure it out first... trial and error testing can get expensive!

c) Do NOT exceed the maximum electrical specifications!  Pay attention to the maximum allowable Voltage, Current and Wattage (Volts x Amps).

d) Do NOT use a propeller that is bigger in diameter and/or bigger in pitch than the specifications provided! Use the recommended propeller.
 
e) Do NOT overheat. Ensure adequate cooling by exposing the motor and entire ESC to moving air.

f) Do NOT operate the motor if the prop appears to wobble when you turn it by hand! Look at the back of the hub as you rotate the propeller over by hand. The back of the hub should remain in one plane throughout the rotation, not wobble.

g) Do NOT operate if the motor appears to vibrate! Look at the prop shaft when it first gets going. If it looks blurry to the eyes or sounds strange it is vibrating. Excessive vibration will destroy your motor and possibly hurt your servos as well. Stop and check all bolts for tightness and make sure the prop is turning true (no wobble) and that the prop is balanced.

h) Do NOT operate with loose fasteners! Check bolts, nuts, screws etc for snug tightness. Do not over tighten but keep them snug. Check periodically, particularly after the first few times you use the motor. Use blue thread locker such as Pacer Z42 to help keep fasteners from loosening up. If you find that fasteners are continously loosening up even after the motor has been used many times, you have a vibration issue. Check for sources of vibration. Excessive vibration will destroy your motor.

i) Do NOT operate at High Throttle on the ground or test bench for longer than 10 seconds! High Throttle static operation such as this where the airplane is not moving, induces maximum load on the motor while not providing proper air flow to help cool it. Heat will build up quickly, particularly if the motor is cowled. Heat is bad news. Heat can melt the windings down and quickly destroy the motor.

j) Do NOT operate without a safety fuse system!

k) Do NOT assume an electric motor is the same as a glow or gas engine! An electric motor is very different. Electric motors will attempt to overcome any load they encounter, even to the point of destroying themselves.

l) Do NOT use your plumbing tools or hammer! A brushless motor is not a farm tractor. Small hand tools only. Snugly tight does not mean you tighten things to the point they strip.

m) Do NOT get dirt, water or metal objects into the motor! If you drop a small screw or nut when working on your model, find it first before turning on your motor. Electric motors have strong magnets. Chances are that if you drop something small and metal into your model and can't find it... that it will be inside the motor. Turn the motor over by hand and pay attention to any unusual resistance, grinding or other odd sounds or feel. Find the missing metal item before operating your motor!
 
 
1.1.8. Support

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1.1.8.1. Contact Us

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Their depth of technical knowledge is about on par with what is shown in our printed sales literature. In most cases, they are working from the same printed advertisements or content from our web site that you are. Asking sales personnel to confirm the size, color and availability of a product is well within their capabilities. However, asking detailed questions about technical issues is not.

 

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1.1.9. Keep Up to Date

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1.2. Power Module - #VMM-T210XPM1 For VMA-T210X Twin Otter - Additional Information

In general "Additional" Information is:

  • In addition to that found in other documentation related to this product,
  • Often reflects feedback &/or questions from users of the product.

Subject to the Conditions of Use, please review the attachments and related articles listed below.

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