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1/10 Scale Nitro Rally/Touring Car:

Kyosho Fiat 131 Abarth Rally - # 2394 / # 3025 (Radio Controlled Model Review)


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


  Released by Kyosho circa 1976, the 2WD Circuit 10 Fiat 131 Abarth Rally was available as a kit - # 2394 - or ARTR, partly assembled - # 3025.

  The Circuit 10 design, has a formed alloy plate, with a plastic tub chassis, a cast alloy gearbox, coil spring over oil filled dampers and dogbone drive-shafts.

  The same Circuit 10 chassis was also used for the Mercedes 450 SLC, Baja West Coast and Wildcat Buggy.

Kyosho Fiat 131 Abarth Rally Car
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  To race the Kyosho Fiat 131 Abarth, 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.

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★ Kyosho Fiat 131 Abarth Rally ★
Kyosho Fiat 131 Abarth Rally

★ Kyosho Fiat 131 Abarth Rally ★
Kyosho Fiat 131 Abarth Rally

★ Kyosho Fiat 131 Abarth Rally Chassis ★
Kyosho Fiat 131 Abarth Rally Chassis

★ Kyosho Fiat 131 Abarth Rally Chassis ★
Kyosho Circuit 10 Chassis


Buying a Used Kyosho Fiat 131 Abarth
Rally Car (and What to look for)


   Buying a used Kyosho Fiat 131 Abarth Nitro Rally Car, 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 road.

   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 Rally Car you may discover can easily be fixed.

Dampers
   When you receive your used Kyosho Rally Car, 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 Fiat 131 Abarth 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 Fiat 131 Abarth 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 Fiat 131 Abarth Rally Car 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 Rally Car 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 road, if you intend to race your Rally Car 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 Rally Car 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 Rally 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 popping off could easily end your race, so better safe than sorry.

Servo Gears
   The Fiat 131 Abarth 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 Fiat 131 Abarth 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 Rally Car 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 Fiat 131 Abarth model and good racing.


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Or, check out our RC Model Car Setup Guide


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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

Driving On Road

   The basic driving style most commonly used for all forms of on road, tarmac and carpet racing, involves using the full width of the road available and cutting each apex as tight as possible, whilst keeping complete control of the car on the track. The style, often referred to as "Rounding" looks quite simple to those watching, but to get it right needs good hand eye coordination and lots of practice.

   Consider a 180 degree turn. As you enter the corner, start with the car positioned close to the outside of the track, then as you approach the corner brake hard, but not too hard, just enough to slow the car so you maintain control and smoothly guide the car across the point of the apex, gently sweeping round until you are approximately 75% around the corner. At this point, gradually increase the throttle out of the corner, under full control and guiding the car to the opposite outside line. By the time the car is pointing straight on the track, you should be at almost full throttle, before you brake hard again for the next corner.

   Developing this driving style comes in stages. Don't try to run before you can walk, install a low powered motor and practice, practice, practice until it becomes second nature. Then, as your skills improve, try something with a little more power.

   Initially set your transmitter to aggressive breaking and gradually reduce this as you get the feel of the car around the corner. Remember, the faster you enter a corner, the faster you exit it.

   When you first try out this style in a race, be patient, keep the car smooth and controlled. Remember the story about the hare and the tortoise? Well, believe me, when you first start in RC, it works.

   To make this driving style work, the car needs to have the right tires, inserts and a low centre of gravity. Adjust the suspension to provide only a small amount of body-roll and set-up guide linked below to help you set your car to suit your driving style.

   Avoid over-steer, always aim for a little under-steer. Grip is the keyword for the rounding style of driving, but not too much grip. Slicks for outdoor racing and a worn set of Hawgs I found to be best for carpet racing. If your car rolls sideways off the track as you enter the corner, try a harder tire compound, or change the damper springs or oil weights as suggested in our set-up guide. Good luck and good racing.

   If the style you are looking for is to drift slide your car around the corners, I would recommend you perfect the rounding style first, then check out my other hints and tips to learn how.

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







Hints and Tips

Aerodynamics

   It is commonly understood that weight improves traction. If you have ever seen TV coverage of any kind of full size motor racing, you will have heard the terms, aerodynamics and down force. Well, they also relate to small scale models in exactly the same manner.

   Bodyshell aerodynamics for RC model cars is a science in itself and the wrong one could loose you the race. Back in my day the shell to have for 1:10 on-road, was the Alfa Romeo 156. The bodyshell that came with my Schumacher SST kit was a Peugeot 406, but that soon went into the bin when I got the Alfa. The difference in performance was amazing, but it wasn't a patch on the Frewer, Ferrari F50. The rear wing on that bodyshell was phenomenal; it was the fastest thing on the track, great for club racing, but to my cost, illegal for top level racing. Regulations stipulate that the rear wing should be no higher than the roof of the car, the Frewer wing was way too high, so another one was relegated to the "do not use" box.

   Off-Road models also benefit from aerodynamics and downforce, but to a lesser extent than on road models. The rear wing provides good downforce for better rear end traction and is discussed in detail in one of my other articles.

   Way back in 1994, a company named Tenth Technology produced a 1:10 buggy called the Predator. The design of the car was innovative to say the least, with inboard laydown cantilever operated shocks and extra low, almost flat bodyshell. The most eye-catching element of the design was the wings. Not only did it have a nice large wing on the rear, it also had one of a similar size at the front. It was one of those cars where the idea seemed good and the car was fast very fast and did once win the British Championship. The problem was its fragility. Any small knock damaging the front wing, made it un-drivable.

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











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