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There are three basic types of racing conditions:

1.) foam on carpet
2.) rubber on carpet
3.) rubber on asphalt

1.) Foam/carpet racing:
To adjust the T1FK'05 for foam racing we suggest the use of these optional parts:
#301113 Chassis Thick 3.0mm
#301165 Upper Deck Wide
#306510 Alu Top Deck Mount
#302160 Front Lower Arm Hard
#303160 Rear Lower Arm Hard
C-hub Blocks in "Hard" rigidity (3 left & right, 4.5 left & right or 6 left & right)

Because the foam tires often result in very high grip on carpet the main goal to achieve is to make the car as rigid as possible. Use the thick chassis and the wide top deck, and mount the wide top deck using all four alu top deck mounts. All suspension parts should be as hard as possible.

2.) Rubber/carpet racing:
Racing with rubber tires on carpet is very different than foam/carpet racing. The difference between low grip tires such as Take-Off 27 and high grip tires such as Take-Off 22 is large and will require very different setups for each track and each type of tire. Generally the T1FK'05 in the basic set-up included in the kit works perfectly for the higher-grip rubber tires on carpet and there are no major changes required.

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For low-grip rubber tires on carpet we suggest these small tricks:

Remove the front alu top deck mount stands.
Remove the rearmost two screws that fix the front bulkheads to the chassis.
Remove the two middle screws that hold the rear bulkheads.

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Removing the top deck mounts and removing the screws will make the car have more flex thus creating more mechanical grip. As the grip increases you can re-install the screws in the bulkheads.

3.) Rubber/asphalt racing:
Racing with rubber tires on asphalt is usually done under low-grip conditions. We suggest to follow the same tip as used when racing low-grip rubber tires on carpet.

The general rules to follow are:
When there is low grip you have to soften the car (make it more flexible).
When there is high grip, you have to stiffen the car (make it less flexible).

There is also a great difference between flexibility of the suspension, flexibility of the chassis/top deck, and overall flexibility. We will come back with more tips & tricks on the flexibility adjustment in the near future. For the basic settings follow the tips above to prepare your car for different racing conditions.

The basic suggestions on suspension parts hardness are:
For low grip racing conditions use softer suspension parts
For high grip racing conditions use stiffer suspension parts

More Tips & Tricks for your XRAY T1FK'05 you can find in the Tips & Tricks section.

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