I've had good luck combining a gasket like that with Kyosho Differential sealing grease all over it for leak free diffs of all sorts. Haven't built my TT02 RR quite yet but we will see. Though I am likely to be running 1 million fluid in front so leaks are less likely.

Anybody have a part # for the new TT02 RR upper front arms. They are the K parts and the manual itself does not even inclue the part #. It shows the tree with no #. Hmmmm???

Thats a Tamiyaism. Its still a little early for the car as it is just now showing up on shelves. Replacement parts are soon to follow

Great new word I will use to explain all those things that I go "now why did Tamiya do it that way". I no longer have to worry as I have the answer ;-) I can now explain all sorts of quirks on my stupidly absurd vintage collection.

After my last Tamiya Euro Cup race in the Stock class, I was thinking of joining the TEC-circus and participate in more races. The Stock class itself is the wrong class as it is a beginner class. My friends and I just raced it once a year, because we had the cars (we used mostly for summer parking lot bashing) and could race without investing in option parts. But it was always a little unfair as we all are far away from being beginners and I felt bad.

Well now I turned forty and therefore are allowed to be part of the Gentleman class. Motor, esc, battery, tires and chassis type (TT02 in all its no drift and offroad versions) are part of the rules. Tamiya Option parts are allowed generously. So I gave it a thought before christmas and was stopped by the costs. Spending more than 500€ for a plastic chassis is just to much and renouncing Option parts is just not possible for me

At that time I didn't combine two realitys: The one that I want to drive the Gentleman class and two that I had a nice trip through Asia coming up. First stop was Hong Kong Since I realized my luck, I started searching for shops and found one. My wife wasn't happy to run around some boring areas of the city. I of course had a big smile on my face:







The prices were pretty good. I went for the TT02s and got it for 80€ (instead of 130€ in Germany) and added all Option parts this shop in stock for my purpose. Which weren't not as much as I would have liked. But that didn't bother me very much as at the end of the Asia trip I would visit Singapore...

...and there I found the Tamiya shop of our dreams. I mean literally Tamiya heaven. I am pretty sure it had every Tamiya product that is still in production. I had to take pictures:















Every RC part was sorted by chassis type and had its own shelf just for the Option parts. I was ready to fill up the shopping cart, but got stopped by the prices. Parts were at least 20% more expensive than in Germany. I underestimated the high living standard of Singapore. There was nothing left for me, but to enjoy my time in this "temple" a little bit longer...


Back in Germany I started the build of the TT02s and ordered the missing parts. Tamiya really knows their business. All Option parts look very good on this car and are a real plus. The car looks just nice:



For the Gentleman class I chose the AMG GTR body in its lightweight version. I was tempted to color it neon yellow as it is my normal racing colour, but then rejected this idea. My thought was: "Where is a gentleman with his sportscar to find? Mostly on a trackday. And these fortunate guys do not come with race livrées or neon colours, but with nice metallic paint jobs." In the end I chose Tamiya PS-49 aluminium effect sky blue and let off a lot of stickers.

Yesterday, I finally got to race my "blue treasure" for a training with another friend with his unoptioned TT02s. The required unsensored motor-esc-combo needed familiarization, but after some batteries the car was very nice. I made some minor droop adjustments and need harder springs in the rear, except for that the car (even with normal rear diff) was very good to drive. Tamiya knows their business My fastest laptime was 11.356s with regular 11.5-11.6s laps throughout a run. Meaning I was already faster than the last Gentleman class race winner at this track. I am very happy

More I read here I am regretting the RR for upcoming Novice class in TCS race. Seems S is a better race car but I guess in the spirit of Novice class it will work for me.

Is #53792 the right part for universals, the RR uses #50823 diff outdrives? Also what spring set part # is the correct one for the kit CVA's to have some options? I have some 42291 TRF shocks that were for an M07 build, can those work, they seem short?

Is #53792 the right part for universals, the RR uses #50823 diff outdrives?
Yes, it should fit the car.

I have some 42291 TRF shocks that were for an M07 build, can those work, they seem short?
These are to short and will not fit. Tamiya 42102 is the recommended shock set.

I ran the novice class last year at my regional TCS race and bought a type S version. I still run the type S in our tub class at our local track, however, for someone who does not get out there a lot and does not want to worry about tuning. I would get the R version so that you can run Novice class this year then turn around and run Pro Spec class next year with same chassis. The best option would be the RR version but you need to learn camber and toe adjustment. Best of luck.

Very nice shop. How I wish our local Tamiya shops here were like that. I like the assembled chassis. At least you can see and check them up close before making a purchase.

But your TT02 KR looks so much better in my opinion. I also curious on how the TT02 s and KR compare in performance.

How about building another KR mixed with all the option parts included. I'm really digging the all blue parts though.

Thanks, the build has begun. I am starting with 1 million fluid in front RR diff and 5,000 wt. in rear. It worked well on Euro truck as a starting point. Other than that it will be the 64T spur and a stock TT02 RR to get rolling. I have some C tires as well for the black carpet.

Will 54649 diff lock work with these new RR differentials? I built it for now with the 1 million fluid and will try it out at least, I have 6MM clamp on hex for axle, the weird rotor combination ones that come with kit appear like they may be 7-8 MM in width, hard to measure exactly.