I bought the SkyRC GSM020 GPS a while back ... I wanted to track how fast the TT02 can go with a 19 turn, hand-wound brushed motor and 7.2v Ni-MH battery. Yesterday I changed to a 29T pinion and 55T spur gear (4.931 FDR) and put some advanced timing to the motor ... today it tops out at 37mph. Not bad.

The stock TBLE-02S ESC couldn't handle the motor anymore at this gear ratio though. I swapped it out with a Hobbywing QuicRun 1080 and it's working OK so far.
https://cimg4.ibsrv.net/gimg/www.rct...fcec9e7203.jpg

How do you take it apart in case of a damage or a needed repair?

Yeah I'd probably have to knock it loose with a hammer when that time comes. More ideal solution would've been to use a removable ring locked onto a groove on the shaft's outer diameter.

Also considering it comes w/ the ESC and a Motor, it is a GREAT deal, ...yet I have enough cars so as tempting as it is ...

https://cimg8.ibsrv.net/gimg/www.rct...7bf3fb6491.jpg
after one year not using my tt02s I upgrade the adjustable suspension block from the rear SR and the new aluminium steering... tomorrow I shorten the body posts and setup and race this weekend! I will see if it make the car better or worst ;)

That custom pin retention ring is a great idea. FYI: Acetone can break down super glue. Just don't use acetone on Tamiya ABS plastic (such as the wheels) unless you want to totally dissolve the plastic. Just be careful not to let it soak into your skin.

FYI the new tt02s and sr steering is out of box a good choice and I will stick to the new one.

me too - I remember when those were the real thing.

Bought diff lock number 54649 and it's not compatible with my tt02rr diff. Did I buy the wrong part? Drive cup to big to go into the diff lock hub. Love wasting money if this is not it lol

Part is correct, but you will need Standard TT-02 Diff housing (Tamiya 51331) to get the spool fit your RR.

https://www.tqrcracing.com/shop/prod...asp?p_id=15672

Has anyone used these diff joints with the tamiya locker? And would these work with univervals if i end up going that route?

The custom pin-retention rings look nice but are ultimately unnecessary. Degrease the CVD components (assuming they were lubricated in the first place), then lock the set-screw in place with a drop of Red Loctite. Wait a day before re-oiling it. It will never come apart again, unless you heat the CVD with a lighter to melt the Loctite. This procedure works great on the CVDs on my HPI Bullet, which has the same size CVD joints but they are much more highly-stressed by driving monster truck tires. I've never had one come apart by accident, but I've always been able to disassemble them to replace broken drive pins when necessary.

What is the difference between the TT-02SR and the TT-02S? Also, what is the difference between the TT-02SR and the TT-02R? I assume combining the letters from the -R and the -S means Tamiya also combined the improvements from both versions of the chassis, but I'd like to know for certain.

The TT02, TT02D, TT02R, RR use standard suspension arms, which are upper and lower A arms. The RR adds a few extra hop ups to the R

The TT02S and TT02SR use the same arms as Tamiya TC chassis. They do not have an upper arm. The SR adds a few extra hop ups to the S.

I put this kit (base TT02 with Impreza body) together a while ago and ran it a couple times in the basement with a cheap servo that I finally swapped out. I always had weird steering issues, but even with a newer Savox in there it still couldn't center properly. It centered fine after turning left, but after turning right it would go past center. I messed with tightness in all steering linkage, which is nearly impossible to remove anywhere near all the stiction in the steering. I ended up pulling the factory servo saver and popped in a high torque servo saver and it centers as it should now. My guess is the factory servo saver is too weak.... The steering friction really has me eyeing the aluminum upgrade.
Figured I'd post this in case it can help someone else thinking they've blown a servo, but just have a weak servo saver

What Motor wouldn’t overheat
 

Hello, I’m still trying to learn a lot about rc rn and I have this Tamiya TB-01 and I really want it to go from this brushed beginner car to something must faster and better. Although its AWD and I have heard you cant just throw any motor in there as it may overheat so please suggestions on what to put in it to make it hella sick.

https://www.tamiyausa.com/shop/spare...-tt02-g-parts/

Anyone got a spare set laying around by chance they can sell? Seems to be out of stock pretty much everywhere stateside

I have an SR and I'm curious if the upper deck (chassis brace) from the TT-01E will fit. Since those two holes on either diff cover are open on the SR, was hoping it would work/line up. Anyone tried it?

EDIT - Never mind, just found someone else ion the thread that asked the same question, seems it's a tad too short. Bummer.

(54875) may be the part #. 51331 Is a Land Cruiser.

Overheating happens when the car is over geared, with respect to motor.

Generally speaking, you would gear the following motors as follows:

fdr = final drive ratio

17.5 around 3.8-4.0 fdr
13.5 around 4.5
10.5 around 5.0
8.5 around 6.0
4.5 around 7.0

final drive ratio is spur gear divided by pinion gear x internal ratio..

so a TT02 has an internal ratio of 2.6, so if you run a 86 spur and 25 pinion, you’re looking at

86/25 = 3.44; x 2.6, 8.944.. so you could run a very hot motor with this gearing and it would not over heat.

as a precaution it is recommended that you check the temp regardless after every run.

Now I personally don’t recommend any motor faster than a 13.5 in the TT02.

Have you seen the TT02 top deck from fibre-lyte.co.uk? It was designed by thercracer, not sure if the SR is different to the standard or S though?

Yeah, I did see that....might have to try it out!

hello friends I have a tt 02 rr and my question is if someone has changed the internal ratio of 2.6?

Just picked up 2 of the TT-02 kits as Xmas gifts for my kids. For a whopping $160 for 2 kits, I can’t complain. They’ll be bashers for sure. Aside from bearings, is there any other must haves? These will never see the inside of a track. Just ran in parking lots or streets.

I would get a steel pinion gear for durability. Tamiya kit aluminum pinion is very soft and wears fast. If you plan to go fast with the car, consider getting the aluminum propeller and joint shafts set. Some 5mm and 8mm shims are also good to have to adjust diff gear mesh during the build. You might need to buy foam inserts for the tires separately, if your kit doesn't include them. Oil filled shocks are a nice upgrade if kit comes with basic friction shocks.

Not worried about the friction shocks at this time.

I will be sure to use foam inserts on the tires I buy.

No going fast for a while. Keeping them in the 10-15mph range for a while. That should keep breakage to a minimum and allow them to learn how to drive.

This is going be fun and good project with my TT02RR.
These parts looks awesome.
https://cimg2.ibsrv.net/gimg/www.rct...9472982478.jpg
https://cimg3.ibsrv.net/gimg/www.rct...e3bd93e373.jpg

I added a Wiki. Go add setups, upgrades and homegrown hop ups.

will these parts allow you to set droop with droop screws?

Are any of the hop-ups added to the -SR version the same as the hop-ups added to the -RR version?

Basically I'm trying to figure out, if I only bought one version, which one would be the best from a mechanical and performance standpoint. The -RR certainly looks like the best of the "original" TT-02 design, but maybe the -SR version is more like a higher-end touring car? I honestly have no idea, I've never built a TT-02 of any kind before.

The SR has more modern suspension geometry and adjustability and is much closer to a higher end touring car. The only potentially lesser bit is, I don't believe the SR has the aluminum center driveline parts, but those are relatively inexpensive.

I think so.
 

I think so! check out here https://www.thercracer.com/2020/07/t...02-s-rear.html
https://cimg6.ibsrv.net/gimg/www.rct...6fb9eaa431.jpg

New guy
 

Hi guys..Razif here from Malaysia.
I have a 2017 build tt02 type s...still havent been driven on the track lol..it seems i cant post photos yet to show the built.

Will update my post with picture soon guys.

Nothing special here but bone stock TT02. Just had my kids build their first kit. They did the build, I helped tidy their wiring.

https://cimg5.ibsrv.net/gimg/www.rct...0c38a18c8f.jpg
https://cimg7.ibsrv.net/gimg/www.rct...abf061a574.jpg

They look good and it was great that you worked together. Having worked with kids, have them stay way from trees, curbs, mailbox posts, parked cars, etc. You get the idea. Have fun!

Hello all !
I want to upgrade my TT02 with a brushless motor. I'm a little beat lost... What type of motor is suitable to have a good level of performance on a track without destroying the tansmission (8.5T, 10.5T ?) ?

Thanx :)

17.5 - 21.5 you’re looking at stock racing.

8.5-13.5 you’re looking at mod racing.

I would stick to stock level motors.

Thanx Raman :)

Hi, does anyone know if there is a nicer battery strap available somewhrere (maybe carbon fiber?) than the kit plastic one?