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Tamiya XB Subaru WRX STI NBR Challenge - #57907 (Radio Controlled Model Review)1/10 Scale Electric Touring Car - TT-02 Chassis:Released by Tamiya on September 8, 2018, based on the TT-02 chassis, the XB Subaru WRX STI NBR Challenge (#57907) is No.207 in the RTR Pre-Assembled Expert Built Series, and is of the Subaru WRX STI that won the SP3T class of the Nürburgring 24 Hours race in May 2016. The model was previously released by Tamiya as an assembly kit in August 2017 (#58645).The model comes with a pre-painted polycarbonate bodyshell, 540 motor, radio system, ESC, battery and charger. 
The TT-02 Chassis was produced by Tamiya as an entry level model, to replace the aging TT-01 Chassis, that has been around since 2003. The TT-02 design is capable of utilising modern day rechargeable batteries, is also durable and easy to build and maintain. The shaft driven Chassis configuration, employs front and rear orbital bevel gear differentials, fully independent double wishbone suspension with coil spring over friction dampers. Like the majority of Tamiya budget models, this one comes with Plastic and sintered brass Bush type bearings, that when dust and grit get into them, abrade the drive shafts that spin in them, making them sloppy and causing dog-bone problems. I recommend these should be replaced, by a full set of Shielded Ball Bearings ASAP. To get the best from the TT-02 Chassis, it needs to be fine tuned so it has enough grip to hug the corners at high speed, without slipping off the track and accelerate smoothly under control. 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:  Reviewed by: RCScrapyard Manual.
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TT-02D Chassis Models:
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Tamiya Subaru WRX STI #57907 - TT-02 Chassis |
Tamiya Subaru WRX STI #57907 - TT-02 Chassis
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Buying a Used Tamiya Subaru WRX STI |
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Hints and TipsRadio FrequenciesAfter buying your first car, it won't be long before you need more than simply bashing around the back yard, or out on the street. So you will be looking around to find a club that is not too far away where you can do some serious racing. Before you can start racing, you will need at least three different sets of crystal frequencies. The race organisers will note down all your available frequencies when you register at the track and allocate one of those frequencies to you for your heat. To avoid change over problems from one heat to the next, they generally try to give you a frequency that no one in the heat before or after is using, but always check to make sure before you put your car down on the track and switch on. There is nothing more annoying than to be in the middle of your best qualifying race and some idiot switching on their transmitter in the pits, on your frequency. Not only could it spoil your race, but it could cost you a lot of money if at the time you are travelling at top speed along the straight, loose control and crash head on into the wall. Just imagine how you would feel. Now, imagine this scenario. You are at your RC meeting and you need to run your car to check out some changes you have made, either after a crash repair, to adjust the steering servo, or just fine tune your car before the next race. What do you do? Before you switch on anything, the first thing to do is check with race control, to make sure that none of the racers presently on the track or in the next heat are on the same frequency you want to use. The people in charge are always willing to help in these situations and if none of your three available frequencies are safe for you to use, they will often lend you some crystals, sometimes for a small fee. Some of the bigger meetings use a board displaying all the possible frequencies, indicating which of those frequencies are in use at that time and which are available for others to use. To claim a particular frequency you simply take a peg or marker off the board so that others wanting to check their car out can not use the same frequency as you. Before the next heat, this board is updated and any missing pegs must be accounted for. So obviously the best time to claim your frequency, is at the start of a heat and you must return it before the start of the next heat. So, be cautious, use the protocols at your track as they should be used and you won't make any enemies … you know it makes sense. |
Hints and TipsCamberCamber is described as the angle of the wheel as you look at it directly from the front or rear of your car and if set correctly will improve your cars cornering ability considerably, by providing increased traction. This simple to make adjustment is considered by many to be one of the most effective changes you can make to your car for better handling. Positive Camber is when the top of the wheel is angled outwards. Negative Camber has the top of the wheel angled inwards. First of all, get yourself a good camber gauge. All adjustments to your cars camber setting should be made with the car in race mode that means the motor, battery etc in position in the chassis. To check the angle of an On Road car, it must have the ride height already set to around 5mm. Place the car on a perfectly flat surface, position your camber gauge against the side of the wheel you are checking and take the camber angle, normally this is between -1 and -3 degrees negative. Next, put a small 1mm thick piece of card under that corner of the car and push the corner down until it touches the card. In this position, check the angle again. It should be between 0 and -0.5 degrees negative camber. If not, pick up the car and put it back down on the flat surface, check and make adjustments, using the turnbuckle, that you consider are needed to achieve your goal. Keep checking and adjusting and repeat for all four corners. What you are aiming for is an angle that will provide your car with the maximum amount of rubber on the track on high speed corners. Off Road cars can be adjusted in a similar manner to that described previously, with the ride height set at around 20mm, but in place of the card, use a small booklet or something around 5mm thick. The optimal camber setting is a little more difficult to find for off road cars, and depends generally of the track surface you are racing on. Slippery tracks generally require less camber because of reduced suspension movement when cornering, whereas high grip tracks require more camber to compensate for inertial induced body-roll. Depending on the particular model, this setting can be anything between -1 and -5 degrees … sometimes more. Check your model manual for details. Be aware that for all model types, too much negative camber can reduce straight line traction, but with a good setting for any particular track, the advantage it gives, that of vastly improved cornering stability, far outweigh any negative effects. For beginners, this setting is by far the easiest to experiment with. Just take the car out on the back yard and with a few simple turns of a turnbuckle you will soon learn just what difference a small change in your cars setup can do to change its handling ability. Good luck and good racing. |
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