RCScrapyard ► Iconic Vintage Radio Controlled (RC) Model Car Archive ► Tamiya Toyota Gazoo Racing WRT / Yaris WRC. ITEM: # 58659 TT-02
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Tamiya Toyota Gazoo Racing WRT / Yaris WRC - # 58659 (Radio Controlled Model Review)

1/10 Scale Electric Rally Car - TT-02 Chassis:

  Released by Tamiya on September 1, 2018, the 4WD Toyota Gazoo Racing WRT / Yaris WRC (#58659) is an assembly kit, based on the TT-02 chassis. The XB Toyota Gazoo Racing WRT / Yaris WRC (#57903) Expert Build Series version was introduced four weeks later. The model is of the Gaze Racing WRT sponsored Toyota Yaris that took part in the 2018 FIA World Rally Championship (WRC).

  A 540 motor is supplied, but requires a radio system, battery, charger and ESC to complete (specifications differ from country to country).

Tamiya Toyota Gazoo Racing WRT / Yaris WRC - TT-02 # 58659
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  The TT-02 is shaft driven on a molded plastic Chassis, with gear type differentials, fully independent double wishbone suspension, coil spring over friction dampers, dogbone drive-shafts and bushings.

  Like the majority of Tamiya models, this model comes with plastic bush type bearings, that after a short while, when dust and grit get into them, actually wear into the metal drive shafts - our recommendation is that these should be replaced by steel shielded ball bearings ASAP.

  To get the best from the Tamiya TT-02 Chassis, it needs to be fine tuned, for smooth acceleration under control and handle corners at high speed, without slipping off the track. Small adjustments can make a Big difference and our simple to understand, step by step procedure, will guide you to the best Set-up for your driving style.


      Rating: 44 Stars out of 5 Reviewed by: RCScrapyard     Manual.

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Tamiya Toyota Gazoo Racing WRT / Yaris WRC - TT-02 Chassis
Tamiya TT-02 Chassis

Tamiya Toyota Gazoo Racing WRT / Yaris WRC - TT-02 Chassis
Tamiya TT-02 Chassis


Buying a Used Tamiya Toyota Yaris WRC
Rally Car (and What to look for)


   Buying a used Tamiya Toyota Yaris WRC Electric 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 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 Tamiya 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 Tamiya 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 Tamiya 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 Tamiya Toyota Yaris WRC 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 Toyota Yaris WRC 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 Toyota Yaris WRC Rally Car model at a competitive level, I would also recommend you obtain and fit titanium pivot shafts, turnbuckles, tie rods and steering rods.

   On Belt driven models, the 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.

   For Gear driven models, 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 back yard, 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 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 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 Toyota Yaris WRC 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 Tamiya Toyota Yaris WRC 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 Tamiya 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 Toyota Yaris WRC model and good racing.


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Hints and Tips

Tires for RC Models

How to Mount Rubber Tires onto Wheels/Rims.

   Before mounting your Tires, I would recommend talking to the more experienced racers at your local club, concerning what inserts they use. Even the top level racers rely on a bit of local knowledge on tracks they have never raced before.

   Once you have decided what inserts to use, position them inside the Tires ready to go onto the rims.

   You will need strong fingers to pull and maneuver the Tires over the rims, so you may need the help of an adult. Do NOT use metal Tire levers or a spoon, as they can not only damage the fragile plastic rims, but can also put small tears in the rubber, that could cause problems later.

   The technique I recommend, is to first of all hook the Tire on one side of the rim, then using the thumb and forefinger, grip the Tire and pull it upwards and over into position around the middle of the wheel, then over to its final position on the far side so that the beading is seated in the spigot. Next, position the near side beading in the opposite spigot, making sure the sponge (or rubber) insert is not trapped and positioned centrally.

How to Glue Rubber Tires onto Wheels/Rims.

   You have the option of either gluing or not gluing your tires in position. If the track you race at is not too grippy you can sometimes get away with it, but on high grip tracks, there is always the possibility the tire might pull away from the rim and ruin your race .... My recommendation is to glue them.

   Superglue is the thing to use. To do this, carefully pull the beading out of its seating, put on a spot of glue, then quickly push it back down. repeat this at least 6 times around each side of the wheel.

   Superglue can be dangerous, so this is best done by an adult.

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







Hints and Tips

Look after your Gears

   In RC there are a number of different gear teeth sizes we tend to use, based on two systems. Imperial and metric. The imperial system has sizes 24dp, 32dp, 48dp and 64dp. DP stands for Diametral Pitch and the number refers to the number of teeth per inch. The metric system has sizes 0.4m, 0.5m, 0.6m, 0.7m, 0.8m and 1m. M stands for Module and is the ratio of the reference diameter of the gear divided by the number of teeth.

   The different sizes are used basically for strength. 32dp gear teeth are larger than 64dp gear teeth, therefore the 32dp gears are by design stronger and for this reason are more commonly used on a number of entry level buggys, to help them withstand the knocks and crashes by drivers new to RC, and nitro models because of the higher torque levels involved. Also, the bigger the scale of the model, the stronger the teeth need to be.

   64dp and its metric equivalents are generally the choice of 1:10 electric on-road racers, because of its higher range of ratio options and smoother action in comparison to other sizes. On-road models are not as hard on the gears as off-road, so the weaker, small tooth size is not a problem.

   48dp and its metric equivalents tend to be preferred by 1:10 off-road racers, mainly because of their strength in comparison to the 64dp and smoother operation than 32dp. Off-road models need gears that can handle all the knocks and bangs, as well as heavy landings off high jumps.

How to set Backlash between Gear Teeth


   Setting your gears is the most important part of looking after your gears.

   Backlash is basically the gap between the teeth in mesh. The perfect gear setting must have a small amount of backlash. To achieve the best setting use a very thin sheet of plastic between the pinion and spur gear teeth as you press them into mesh. After tightening the motor mount screws, use your fingers to spin the spur gear and roll out the plastic sheet.

   If the setting is correct, there will be a small amount of movement (backlash) between the gear teeth before they catch. If the mesh is too deep, there will be no movement between the teeth, this will create friction and if you run them like this, they will grind together, wear and break. If the mesh is not deep enough and only the tips of the teeth are touching, the excessive backlash will soon damage and strip the tops off the teeth rendering the gears useless.

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








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