could be a fun class ...yet another new class!

I am enjoying (slowly) building my TT02
I noticed that the TT02D type S comes w/ a lot of stuff that I don't think the TT02 type S comes w/. The TT02 sype S has the ESC, but ommitted a lot of aluminum parts. I just noticed in one of the bags that my TT02D type S comes w/ metal wheel hex adapters. -so I don't have to use the plastic ones. Lots of blue aluminum parts, graphite shock towers, and oil filled shocks (which are actually pretty nice).

I am building mine as an early 70's Mazda RX3 racer. Stay tuned for photos.

Surprisingly neutral. With the box tires you get understeer on corner entry and a little on power oversteer. But nothing uncontrollable. With standard racing tires the car is on rails, but the fun in a group of racers is much greater with the box tires.
You also can run the car much flatter than a T4 for example. So it looks even more realistic.

I wish we could get a class going in our area. The big problem I've seen are the steering uprights. They are the same as the TT01. The TT01E's are different. I raced in an enduro with TT02 and the steering uprights were constantly breaking. In a school group that I work with the TT01 uprights broke all the time and the TT01E's were better. I would like to see aluminum uprights made legal for any TT02 class.

Did your kit come with the Radial tires like these? http://www3.towerhobbies.com/cgi-bin...?&I=LXCVPK&P=7
If so, they are pretty sticky but do wear rather fast. I have used several HPI tires like their x-pattern tires outdoors with success.

Easier than changing the gearing would be go put a motor with less power in it if you have one. Something like a 21.5. If that is not an option, have you tried to reduce the timing of your 17.5 motor? That will slow you down some and is the least hassle.
Otherwise, you will just need to experiment with a bigger spur and smaller pinion and play around with the motor mount holes until the gear mesh feels right. That is what I do. I almost forgot to mention the YR motor mount as another option. These can be found for around $15 if you search around the web. It is totally adjustable and will give you a much wider range of pinion gear choices.

Sturdier parts because drift car? I mean, it would make sense since it makes sense to crash a drift car more often than a grip car.

All I can say about the tt-01d is don't waste your money on all of the aluminium & carbon fibre upgrades. I got one off a guy who spent a small fortune who was gutted to find it didn't hold its value. Also had the XB Coppermix Silvia & didn't notice much difference once balanced with added weights. I had no idea how rubbish this model was until I got something much better but are glad I learnt with the Tamiya first.

I haven't had anything break, so I don't see a need for aluminum and cf bits. How bad must I hit a curb for something to break to render a sturdier part? I'm assuming the stock torque motor won't allow the car to go fast enough to do such damage, so this must be for cars with upgraded motors?

Can't say I crashed the brushed car (sport tuned motor) into anything hard enough the foam bumper couldn't cope with. It took a bit of playing with gearing to do the same with a brushless combo. Thankfully it went into the plastic car first as alloy doesn't bend & CF is rather brittle on hard impact. The wife had a Mugen Seiki MBX6 Eco which was an awesome buggy but didn't do well crashing. You're right to stick with the plastic for obvious reason when well versed in common sense like surensm. Save the money for a decent brushless combo & lipo/balance charger that isn't cheap/nasty Chineese rubbish. I started off with that too, thought it was alright - until I invested in something else wisely.

My tt02 hpi mustang body and a mixture of Jaz rider and yeah racing suspension parts

I found it was easy to break the bottom of the front upright when I went brushless.the extension through the lower arm can catch on things.

Let us not forget that this is the tt-02, not the tt-01 thread. Don't want to confuse any newbies that might think some of the tt-01 complaints in here are about the tt-02.

can some one help me? has any one have any idea what the ball bearing is for with the Jazrider brake disc hubs?

Thanx for the feedback. Really appreciate it. Need a new body for my TT clubracer....
Was thinking about the GTR or the concept NSX.
You know how the NSX handles?

Yeah sorry about that, however the comments about the alloy & carbon fibre are just as valid with the new chassis & I'd quite happily have a Tamiya drifter if it was that or nothing. I was just lucky that a friend was getting rid of something better & could afford it at the time. There's plenty of expensive top quality racing chassis on the market so there's always going to be something much better than a tt-01/tt-02 - just to put it correctly into perspective.

@JD Skyline:
I haven't driven the NSX body yet.
My guess is that the Super GT bodies (GT500 class) come out pretty equal in terms of balance and performance. The Lexus RC-F looked pretty much the same in close racing.

About the breaking issues:
The TT-02 is my first plastic car. And so far it appears to be pretty bulletproof. We had some hard crashes when parking-lot-racing and the car took it without damage. In comparison to my T4'15; I wouldn't be sure that the Xray is tougher...