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1/12 Scale Electric On-Road Car:

AYK RX1200 Type II (Radio Controlled Model)


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History + Information (and How To Set-up Tips):


  Introduced by AYK Aoyagi Metals Co circa 1978, the upgraded 2WD RX1200 Type-II version was available with two bodyshell options: March 76S - and NOVA 53S.

  The model is based on a black anodised aluminium alloy double deck chassis, with alloy motor-mount, GX1200 differential and a servo operated wound wire rheostat type speed controller.

  To reduce weight and also improve acceleration and cornering ability, a special FRP lower deck was available.

AYK RX1200 Type II
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  To race the AYK RX1200 Type II, it requires a high level of tuning for improved stability when cornering, to keep it on the track and give you more grip under acceleration. Even the smallest change in your cars settings can make a Big difference. Our simple to follow instruction chart will show how to attain the best Set-up for your personal requirements.

  With simple to follow language, we can point you towards the correct Electric Motor for your RX1200 Type II and achieve the best Gearing, for your battery and motor combination.

  Learn the secrets the professionals have known for years to get the best from their Bearings using a number of simple tips. See how you can easily avert Radio interference, and the best way to safely Charge your Batteries, for improved acceleration and more run time.









Gas/Nitro Engines Body Shells Radio Transmitters etc Tires Wheels/Rims Electronic Speed Controllers Battery Packs / Chargers Electric Motors












Items For Sale:






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★ AYK RX1200 Type II Chassis ★
AYK RX1200 Type II Chassis

★ AYK RX1200 Type II Chassis ★
AYK RX1200 Type II Chassis

★ AYK RX1200 Type II Chassis ★
AYK RX1200 Type II Chassis

★ AYK RX1200 Type II Chassis ★
AYK RX1200 Type II Chassis

★ AYK GX1200 ★
AYK GX1200 Differential


General Information and Advice

   For those starting in Radio Controlled Racing, here are a few Hints and Tips: Firstly, buy a Kit not an RTR. That way, if something breaks you will have some idea how to fix it.

   Radio Controlled Model Cars are very fragile and easily broken. The main parts to protect are the Front Wishbones, Suspension Shock Towers, Dampers, Hub Carriers, Kingpins, Uprights and Toe in Blocks, so make sure you have a good strong front bumper and Lexan or Hard Plastic Body Shell and if available for your model, a protective under tray, to prevent grit and dust getting into any moving parts.

   The Steering Servo is also a weakness in high speed crash situations, so get yourself some good strong Servo Mount and Servo Saver. Also I would recommend Titanium Shafts, Turnbuckles, Tie Rods and pivot/steering shafts and if available for your model, lightweight Titanium Drive shafts, dog bones and CVD (Constant Velocity Drives). The standard steel types are far too easily bent.

   Gearing is another problem area on RC model cars. Head on collisions can easily break off gear teeth on Nylon/Plastic Spur Gears and even Bevel Gears inside the Gearbox. Heavy impacts can also loosen nuts and self taping screws that hold the Motor in Position, allowing the Pinion Gear to pull out of mesh slightly and rip the tops of the teeth on your Spur Gear. To avoid this to some degree, fit locking nuts and a new motor mount from time to time, so the self taping screws that hold the motor in position have less chance to come loose.

   Ball joints always cause problems. For top level Radio Controlled model car racing, the plastic ball connectors should be checked and if deemed necessary changed after every meeting. A simple thing like a loose fitting connector breaking free could easily end your race, so better safe than sorry.

   Many New car kits come with Nylon and Sintered Brass Ring type bearings. My advice is to discard these before initial installation and buy a good Hop-up set of Shielded Steel Ball Bearings. Or if you are serious about your racing, Teflon or Ceramic Bearings.

   One final piece of advice about the Setup of your Car. Keep the Centre of Gravity as low as possible. Ride Height is all important. For On Road Drift/Touring cars the Ride Height should be no more than 5mm, for Buggys, Trucks, Truggys and Monster Trucks, as low as possible depending on the track conditions. If Body Roll is a problem, handling can be improved with the use of Stabilizers, Anti roll or Sway Bars, stiffer Tuning Springs and, or thicker Silicon Oil in the Dampers. Also find somewhere to mount the Transponder as low in the Chassis as possible.

For Car Setup Information check out our Hints and Tips page.

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Manufacturers and Brands Catalogued and Listed by RC-Scrapyard.


   At present, the RC Model Manufacturers, Brands and Distributors covered by us are: ABC Hobby, Academy, Acme Racing, Agama Racing, Amewi, Ansmann Racing, ARRMA, Team Associated, Atomic RC, Axial, AYK, Bolink, BSD Racing, Capricorn, Carisma, Carson, Caster Racing, Cen, Corally, Custom Works, Durango, Duratrax, ECX - Electrix, Exceed RC, FG Modellsport, FS-Racing, FTX, Fujimi, Gmade, GS-Racing, Harm, HBX, Helion, Heng Long, Himoto Racing, Hirobo, Hitari, Hobao, Hong-Nor, Hot Bodies, HPI, HSP, Intech, Integy, Jamara, JQ Products, Kawada, Kyosho, Losi, LRP, Maisto, Mardave, Marui, Maverick, MCD Racing, Megatech, Mugen, New Bright, Nichimo, Nikko, Nkok, Ofna, Pro-Pulse, Protech, PTI, RC4WD, Redcat Racing, RJ-Speed, Robitronic, Schumacher, Seben, Serpent, Smartech, Sportwerks, Step-Up, Tamiya, Team-C Racing, Team Magic, Thunder Tiger, Tomy, Top Racing, Traxxas, Trinity, Tyco, Vaterra RC, Venom, VRX Racing, WLToys, X-Factory, Xmods, Xpress, Xray, XTM, Yankee RC, Yokomo, ZD Racing and Zipzaps.

   This is an ongoing project, with new and "lost in time" RC Model Brands being added as they are found and although most of those listed above have been covered in relative detail, some are still being researched and will be completed in the near future.


















Information and Advice

Electronic Speed Controllers

History:

   ESC were originally developed to be used in conjunction with brushed 27T stock and modified motors in the late 1970s, early 1980s. Compared to modern day Controllers, they were Bulky and heavy, constructed using basic resistors, rheostats, capacitors and transistors, crammed together on a simple circuit board, to provide stepped but smooth acceleration when compared to the old mechanical, servo operated sweeper Speed Controllers. An Electronic Switch to change the direction of current flow was used on some of these early ESC to give reverse operation. Although they were a vast improvement on the old mechanical speedos of the time, they were expensive, jerky to control and prone to burn out if not carefully looked after.

   As new technology became available, improvements were slowly made and with the introduction of the new FET (Field Effect Transistors) and some basic mass produced silicon chips, ESC were made smaller and their reliability gradually improved.

   By the mid 1990s, "regenerative breaking" was developed. This meant that energy that would have been lost slowing down the car by effectively turning the motor into a generator, was harvested and put back into the battery. This of course was long before F1 had KERS (Kinetic Energy Recovery System) and adjustable anti lock breaking was introduced.

   Brushless Motors came to RC in the late 1990s early 2000s, which required a new breed of ESC to be developed to fully utilise the new technology. Ni-Cad Rechargeable Batteries were superseded by Ni-Mh and more recently Li-Po Batteries which provided higher Current output for the ESC to regulate. The latest ESC now use sensors to manage the motor and can be adjusted remotely to suit varying conditions.


Brushed Motor ESC.

   The "Silver Can" Stock Motors that come in a wide number of RC model kits are often accompanied by a 5 Amps to 20 Amps ESC. However, if you want to upgrade to a more powerful Modified Brushed Motor, 20 Amps may not be enough, so you will have to buy a something well over 20 Amps depending on the number of turns of your motor. As a rough guide, a 9 Single has a much higher current requirement than 20 Single.

Brushless Motor ESC.

   ESC for Brushless Motors are in no way compatible with brushed motors. The DC (Direct Current) input from the battery, on brushless ESC is transformed into three phase AC (Alternating Current). Each "phase" connecting three wires on the Brushless motor. By changing the frequency of the output wave the motor will spin faster for acceleration or slower for breaking. Reverse is simply achieved by changing over any two of the three "phases".
   At the time this article was written, Brushless ESC range from 3 Amps to around 300 Amps.
   For beginners I recommended you buy an ESC and Motor Combo, that way you can be sure the ESC Current rating is correct for the Motor.


For More Setup Information check out my Hints and Tips page.







Hints and Tips

Keeping Notes

   If all you will ever do is go racing at your local track every week, then this article is not for you. However, if you ever look towards travelling around to different tracks around the country, or even the world, the value of keeping notes is all too obvious.

   Every time I raced in a regional or national competition meeting, I would make detailed notes, aided by a little local knowledge initially and later fine tuned to suit my own driving style.

   My experience now means there are few, if any outdoor tarmac tracks within a 300 mile radius I haven been to and my notes on motor, gearing, camber angles, shock settings, tire choice and what inserts work best for that particular track, amongst others, allow me to save valuable time on the finer points of car setup, that can be done in the warmth of my own home on the kitchen table days before the meeting, instead of the often crippling heat, or the arduous conditions inside a wind blown tent.

   There are lots of methods for making notes on setup. The easiest perhaps is to download the blank pages often supplied by your cars manufacturer with a line drawing of your car and spaces for you to fill in as to the setting you prefer. Great if each time you go to a particular track the conditions are always constant. Notes made on a cold windy day will be little use on a hot sunny days racing on the same track.

   Manufacturers setup pages for their top drivers can also be useful as a starting point, but you should never take that setup as being the best there could ever be.

   So, the first note you should make is of the weather conditions. The wind and its direction isn't really what I am talking about, although it can have an effect on your cars handling, it is not something you can change your setup to handle. Track temperature and humidity are the main things to note. Not the average for the day, but for each round of racing. And note what tires you used and how the car handled in each race. Detail everything that might be useful in the future, no matter how trivial.

   Note the motor used and the gearing. Check the temperature of the motor after the race, how much charge is left in the batteries. You may have won the race, but there is always room for improvement your competitors will be doing just that.

   Every bit of information you compile will be useful for the next time you visit that particular venue. Weather forecasts these days are far more accurate than they used to be, so the adage "fore warned is fore armed" fits the bill. Simply search through your notes and find a day you raced with similar conditions to those forecast and set up your car to suit. But don't stop there.

   The conditions may be the same as they were when you made your notes, but that doesn't mean you can't improve your setup. Your practice laps will soon prove if your previous setup was correct, or give you a basis for more fine tuning.

   If you want to be the best, you have to work at it. Success doesn't come easy. You can be the best driver around, but if your setup isn't perfect you will never step up onto the winners rostrum. My motto if you never try anything, you never do anything. And if you never do anything wrong, you aren't trying hard enough.

For More Setup Information check out my Hints and Tips page.










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