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RCScrapyard Radio Controlled Models
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1/6 Scale Nitro Truck/Truggy:

FG Modellsport TR4 4WD - FG 64050 / FG 64040R (Radio Controlled Model Review)


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History, Info (and How To Set-up Tips) for the TR4:


  Introduced by FG Modellsport circa 2012, the 4WD TR4 Truggy, was available as a kit - FG 64050 - or RTR (painted bodyshell) - FG 64040R - with a 26cc engine and radio system.

  The model is belt driven on an alloy plate chassis, with gear type differentials, coil spring over oil filled dampers, dogbone drive-shafts and ball bearings.

FG TR4 - 1:6 Nitro Truggy
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  To race the FG TR4, 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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★ FG Modellsport TR4 Chassis ★
FG Modellsport TR4 Chassis

★ FG Modellsport TR4 Chassis ★
FG Modellsport TR4 Chassis


Buying a Used FG TR4 Truggy (and What to look for)


   Buying a used FG TR4 Nitro Truggy, 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 FG Modellsport website, or purchased separately on eBay. With an instruction manual, any problems with your model Truggy you may discover can easily be fixed.

Dampers
   When you receive your used FG Truggy, 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 FG 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 FG TR4 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 TR4 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 TR4 Truggy model at a competitive level, I would also recommend you obtain and fit titanium pivot shafts, turnbuckles, tie rods and steering rods.

   Drive Belts need checking at regular intervals for wear, tension and damage. If deemed necessary, adjust the tensioning pulley until the belt can be depressed in the centre by no more than around 5mm. If the belt was slack, also examine the drive pulleys for wear. The teeth should provide a well seated fit for the belt teeth and not be rounded on the corners. If the belt teeth do not fit snugly, change the pulleys as soon as possible. For top level racing it may be prudent to replace all belts and pulleys after each race meeting.

Spur Gears
   Gears are a weakness on all Truggy 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 Truggy 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 TR4 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 FG TR4 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 FG Truggy 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 TR4 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.





















★ FG TR4 Chassis ★
FG TR4 - 1:6 Nitro Truggy Chassis


Hints and Tips

Anti Squat

   Described as the angle at which the suspension arms pivot in relation to the chassis, Anti Squat effects traction under acceleration.

   Considered to be at its most effective from a standing start, the handling and stability of the majority of modern day On Road and an increasing number of Off Road models, can be improved with a certain amount of anti squat, normally no more than around 3 degrees.

   Basically, more anti squat gives you more traction, but after a certain point, that advantage is lost and the car will become unstable when turning into high speed corners. For Off Road models anti squat can also improve how the car handles on bumpy tracks.

   Less anti squat allows the car to drop at the rear under hard acceleration, providing less traction, but more stable when cornering. If no anti squat is present, with the lower suspension pivot shaft being parallel to the chassis, steering will be sharp and can induce some over-steer.

   Most manufacturers have some anti squat on their car kits provided as standard and hop-up parts are generally available to change the anti squat angle, but more often, on a wide range of models, all that is needed is a washer or two under one side of the suspension pivot block. However, if the block is held in position using self tapping screws, it may be prudent to change them for slightly longer ones.

   If you are thinking of trying a different setting on your car, not just for anti squat, always remember to only make one change at a time. Too many changes to your set-up made at one time, can make it difficult, if not impossible, to determine which change you made gave you the result you desired.

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







Hints and Tips

Tire Inserts

   Once upon a time, all RC model tires were equal they were all trash. None of the old tires had any kind of internal support, because the hard compound they were made of didn't need it. But that was before the newer soft compounds were developed. These new tires were so soft that if some kind of insert was not used they would just lay flat under the weight of the car. Thus, the new science of tire inserts was born.

   The basic soft foam inserts that come with many off-road rubber tires can be in one of two types. They can be basic rings of sponge, or the cheap and nasty strips of sponge. Both will often need some work done to them before they are inserted into the tires.

   Most of the top off-road drivers will carefully trim the edges of each sponge where they make contact with the inside of the tires. The idea is to reduce the effect of any hard edge when the tire hits the ground. If this is beneficial is debatable, but those I talked to said it does improve grip when cornering.

   On-road cars on the other hand have the luxury of only having to make the choice between hard, medium and soft, molded sponge or rubber inserts that fit snugly inside the wheels and I can testify, the effect of these inserts can make a big difference on the track.

   When you get to the race track, the first thing you check is the track temperature. This gives you an insight into which tire to try first. In my hay day, I would use three compounds, soft medium and hard, each prepared, glued to the wheels with soft, medium and hard inserts, so a total of nine sets of wheels with tires and inserts. Depending on the track temperature, my first practice session would be with the medium insert, then depending on the grip I got from those, I would either stick with them or for more grip try the softer insert. If the car had too much grip and a tendency to over-steer I would move on to the harder insert. Once the right tire and insert combination is found, only then I would try other settings to improve the cars handling. Remember, one change at a time.

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










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