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1/8 Scale Nitro Buggy:

Kyosho Inferno US Sports - # 31277 (Radio Controlled Model)


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


  Released by Kyosho in 2006, the 4WD Inferno US Sports, ReadySet Buggy - # 31277 - is shaft driven, with alloy plate chassis, 3 x gear differentials, coil spring over oil filled dampers, anti roll bars, front universal joints, rear dogbone drive-shafts, dogbone prop-shafts, a full set of ball bearings and a GXR28 engine.

Kyosho Inferno US Sports
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  To race the Kyosho US Sports, it requires time and patience, to tune and adjust for improvements in handling and steering ability and to get the grip you need to stay on course when manoeuvring around tight, slippery corners. A little can be a lot when it comes to changing your cars settings and our easy methodical directions will guide you to the best Set-up to help you win and keep you winning.

  Our easy to understand guide will show you how to adjust the Nitro Engine for your US Sports.

  Employing a number of sensible ideas, find out how you can avoid Radio interference, and problems with your Servo, by making a few changes to the layout of your equipment in your chassis. Discover what the top drivers do to improve the efficiency of their Kyosho US Sports Bearings with a few common sense hints and tips.









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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★ Kyosho Inferno US Sports ★
Kyosho Inferno US Sports

★ Kyosho Inferno US Sports Chassis ★
Kyosho Inferno US Sports Chassis

★ Kyosho Inferno US Sports Chassis ★
Kyosho Inferno US Sports Chassis

★ Kyosho Inferno US Sports Chassis ★
Kyosho Inferno US Sports Chassis


Buying a Used Kyosho US Sports
Buggy (and What to look for)


   Buying a used Kyosho US Sports Nitro 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 US Sports 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 US Sports 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 US Sports 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 Nitro Engine 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 Nitro Engine mount and remember to check them for security after every two or three runs.

   Ball joints always cause problems. For top level Nitro 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 US Sports 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 US Sports 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 US Sports 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

Tires for Off-Road RC Models


   If you only ever intend to race your Buggy, Truggy or Truck at your local track each week end, you will soon learn the best tire - insert combination for your particular model on that specific track surface type. But if you ever visit other tracks in your area, or move on to the national or international race meetings, at other tracks throughout the country, you will soon discover that your trusty setup will not work as well and you will be forced to invest in many more sets of wheels and tires.

   The choice of Off-Road tires available is mind boggling and the combinations of Mini-Pin, Micro-Pin, Block, Stud and Ribbed Tires, with all the various types of foam inserts available is a mine field, even for the more experienced.

   Local knowledge is always the place to start and the second visit made to any particular track is always better than the first, provided you keep good records of your tires, inserts and general set-up for each race.

Tires and Inserts for Jumps


   Most tracks for off-road RC models - indoor or outdoor, have at least one jump for you to negotiate and on a high number of tracks, it is how you land from that jump that will determine where you finish in the race.

   Setting the droop and adjusting the damper oil or coil spring tensions will go a long way to ensuring you land from the jump on all four wheels and keep control of your car as you exit the jump, but the correct choice of tire insert can also have an effect on how much grip you have when you land and accelerate to the next corner.

   As a rule of thumb, the higher the jump, the harder the foam insert needs to be. If the jump is long and not too high, a softer foam insert may give improved grip.

   Once you have determined the best tire combination and before you glue the tires to the rims, trial and error with different inserts on your practice laps before racing, can reap huge benefits.

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







Hints and Tips

Getting into RC

   When I first got into racing RC, all I had was a three year old clapped out Tamiya Boomerang, a silver can stock motor, three step mechanical speed controller, two 1400Mah stick batteries and basic Acoms stick transmitter.

   I was the newbie and most of the guys I was racing against had all the latest models, modified motors, matched batteries and top spec radio equipment, but I was still beating them easily. Why? The answer is simple: Practice. I had been driving that old car around my back yard and in the local park for almost three years. The others bought their cars only a few weeks or months earlier and had pestered their parents for the latest and most expensive car, motor etc, but did not have the experience to be able to control it. While I was steadily trundling around the track, they were crashing out on every other corner, popping ball joints, breaking wishbones and generally causing havoc.

   The moral of this story is all too obvious and anyone starting up in RC who wants to race please take note. You don't need the best equipment to win races. You can start with a cheap basic kit and with a lot of practice in some wide open spaces where you will not cause any damage, learn how to control your car. Remember don't try to run before you can walk. Stick with that silver can motor for a while and upgrade to something a little faster only when you have mastered the old one. You don't even have to buy new. If you go down to your local RC Club, there are always cars for sale. They may be battered and bruised, but if you get an old brushed silver can motor, a cheap 5A ESC, a couple of Nicad, or Nimh batteries, charger and simple radio gear, that is all you need to start practising and after a while, winning races.

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










On/Off Road
RC Models:

Radio
Equipment:

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