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1/10 Scale Electric Buggy:

Kyosho Turbo Scorpion - 3091 (Radio Controlled Model)


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History, Info (and How To Set-up Tips) for the Kyosho Turbo Scorpion:


  Released by Kyosho circa 1985, the 2WD Turbo Scorpion - # 3091 / + Cox Models Ver # 9082 - has an alloy frame with plastic tub chassis and employs coil spring over oil filled dampers, dogbone drive-shafts, metal ring type bearings and came with a LeMans 360 motor and three step mechanical speed controller.

Kyosho Turbo Scorpion
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  To race the Kyosho Turbo Scorpion, it must be fine tuned to improve handling, provide responsive steering and give you the grip to cruise around corners at high speed, without slipping off the track. Small adjustments can make a Big difference and our step by step procedure, will guide you to the best Set-up for your individual driving style.

  Using plain language, our guides will help you choose the right Electric Motor for your Turbo Scorpion and achieve the best Gearing, for any racetrack, to suit your particular needs.

  Discover what the top racers do to reduce friction and get more from their Bearings with a few common sense hints and tips. Learn how to avoid Radio interference, and we reveal the secrets of Charging your Batteries to give more punch, duration and increased performance.









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★ Kyosho Turbo Scorpion ★
Kyosho Turbo Scorpion

★ Kyosho Turbo Scorpion Chassis ★
Kyosho Turbo Scorpion Chassis

★ Kyosho Turbo Scorpion ★
Kyosho Turbo Scorpion


Buying a Used Kyosho Turbo Scorpion Buggy (and What to look for)


   Buying a used Kyosho Turbo Scorpion Electric Buggy, or any used RC Model, has a number of advantages. It is generally cheaper than new, ready built and may come with a variety of expensive hop-ups already installed. Cheap, pre-loved bargains are always becoming available. However, depending on the age of your purchase, it may need a little tender loving care before you can take it out on the back yard.

   The one thing you will always need is an instruction manual. If not supplied with your purchase, they can often be downloaded from the Kyosho website, or purchased separately on eBay. With an instruction manual, any problems with your model Buggy you may discover can easily be fixed.

Dampers
   When you receive your used Kyosho Buggy, make a general visual inspection of the chassis, front and rear wishbones, suspension shock towers etc, for any broken parts that may need to be replaced. Then, take a screwdriver and box spanner and check each self tapping screw and nut for security, taking care not to over tighten.

   Next, for those Kyosho models with oil filled shock absorbers, remove them from the chassis and dismantle the coil springs. The damper shafts should push in and pull out with a smooth action. If you feel a jolt as you change direction, this means the oil has leaked out and must be topped up. At the same time, change the O-Ring seals to prevent more leakage. Also check the damper shafts for damage. If they are scratched, change them as soon as possible.

   If the body shell of your Kyosho Turbo Scorpion is broken, ripped or damaged in any way, this can be easily repaired with rubber solution glue. Also, for added protection and if available for your Turbo Scorpion model, fit an under guard to stop dirt and gravel entering the chassis.

Titanium Turnbuckles
   Examine the drive shafts for wear and replace as required. If possible, change them for titanium. The steel shafts wear and bend too easily.

   If you intend to race your Turbo Scorpion Buggy model at a competitive level, I would also recommend you obtain and fit titanium pivot shafts, turnbuckles, tie rods and steering rods.

   The gearbox of your used Buggy should be opened up to check for gear wear and lubrication. A thin coat of grease is often used on internal gears and although this is fine for basic running around on the back yard, if you intend to race your Buggy at a higher level, this should be removed and replaced with racing oil (ZX1 or Teflon Oil). Of course, this should be reapplied after each race meeting.

Spur Gears
   Gears are a weakness on all Buggy RC models. Head on collisions can easily damage the gear teeth on nylon and plastic spur gears. Heavy impacts can also loosen the nuts or self tapping screws that hold the Electric Motor in Position, allowing the pinion gear to pull out of mesh slightly and rip the tops off the teeth on your spur gear. To minimise this possibility, fit bolts with locking nuts to the Electric Motor mount and remember to check them for security after every two or three runs.

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

Servo Gears
   The Turbo Scorpion steering servo is also prone to damage. In high speed crash situations, the fragile gear teeth of the servo can be broken off, rendering your expensive servo useless, so be sure to obtain a good quality "Servo Saver". Check out my Servo Information article.

   If body roll on your Kyosho Turbo Scorpion is a problem, handling can be improved with the use of stabilizers, anti roll or sway bars, stiffer tuning springs and, or, thicker silicone oil in the dampers.

Ball Bearings
   If your used Kyosho Buggy comes with plastic and sintered brass bushings (ring type bearings), check the shafts that run in them for wear. Dust and grit can get into these bearings and abrade the shafts. Therefore, you should replace them all with shielded ball bearings. If the model has been run with ring type bearings, you may have to change all the axles and driveshafts. For more information, take a look at my article, How to get the best from your Bearings.

   Finally, good luck with your Turbo Scorpion model and good racing.


For More on how to Setup your Buggy, check out my 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.


















Hints and Tips

Shock Mount Settings

   The combinations of Shock settings available on the majority of on and off road cars are far too many for this article to cover, so I will endeavour to explain some of the basics, that should give you some idea what these changes might achieve. Some of the settings suggested may not be available on all RC model cars.

   If you look at the lower wishbones of you model, you may see a number of holes alongside where the ball studs for the dampers are positioned. If you were to remove those studs on the rear wishbone and reposition them in the hole further out from the center of the car, the first thing you will notice is the ride height has dropped, this can be corrected by adding C spacers above the springs. The second thing you will notice is the shocks are more sluggish, this can be compensated by using thinner oil. If this adjustment is made on an off-road car, it can be advantageous for landing after big jumps, providing improved stability due to the increased hydraulic pack in the shocks (as described in my previous article). This setting can also improve the way cars handle small bumps and dips in the track, due to the softer static damping.

   Changing the mounting hole positions used by the dampers, on the wishbone or on the shock tower, will always change the angle the dampers lay. This angle is what changes the characteristics of the shocks in that they will react to different track types and conditions. The above example is just food for thought, for those looking to improve their cars handling in relation to any other settings, such as caster, camber, toe-in etc, they may have previously made on their car. The only way to really get to grips with this subject is through trial and error.

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







Hints and Tips

Soldering

   In the sport of Radio Controlled racing, there are a number of things you have to learn to get you up there with the best. One of the most difficult, for those with little practical skill, is the art of Soldering.

   For their 540 silver can motors, Tamiya provide two wires, typically green and yellow, soldered to the endbell, with two bullet connectors to plug into the speed controller. While this is fine for bashing around the back yard, as you advance to a higher level you will soon find just how inefficient this method is.

   Motor wires are best soldered directly to the ESC. That way no energy is lost through high current draw. Some of the top drivers at one time even used to solder their batteries directly to the ESC, but these days with connectors such as "Deans" and "Power Pole" this isn't necessary but I still wouldn't use any kind of connector for the motor.

   There are basically two kinds of solder. Plumbers solder which is made up of 60% Lead and 40% Tin, where as electrical solder is the opposite 40% Lead with 60% Tin. NEVER use plumbers solder for your battery, ESC or motor joints. Lead melts at 327 degrees C, where as tin melts at 232 degrees C. The higher Lead content of plumbers means it melts at a higher temperature, which is not good for your battery cells. Also, Tin has almost half the electrical resistance of lead, so with the higher Tin content of electrical solder, electricity flows much easier to your motor.

   More recently, due to the European regulations for lead use, lead free solders are becoming more widely used well, in Europe anyway. The problem with lead free is the melting temperature it is much higher, making it difficult to produce reliable joints.

   Lead, as we know, is a poison to the body if ingested or inhaled in certain quantities. so when using lead based solder, try not to inhale any of the fumes and always wash your hands after completing your work. One of my friends also wears cotton gloves, but I find these cumbersome.

   For me lead / tin solder is far easier to use and if used with care, has less potential to damage your batteries having a much lower melting temperature.

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










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