I've noticed two different kinds of these Yeah Racing universals floating around. The lighter color (more brown/tan) Are made of spring steel, and break axles rather easily. The darker, or black ones seem to be much more robust in the axle pin area than the lighter colored universals. It's not that they are constructed more robustly, but different steel is used for the darker ones, and those are the ones I haven't had an issue with. The tan colored ones broke in days. YMMV

For what it's worth, the darker universals came in the TT02 aluminum conversion kit. I have seen them by themselves though, so there must be some mixed stock floating around.

Just purchased a TT-02 and some Hop Up parts.

I purchased these for the Front:
ITEM# 53792

RC UNIVERSAL SHAFT ASSEMBLY

However, I had also installed the

ITEM# 22047

RC FNT DIRECT COUPLING SET 39T

The Universal shafts are No where close to fitting. They are to long, and I'm unable to get the Hubs to attach to the Front Arms.

Likewise in the rear. Once I discovered they wouldn't fit up front, i tried them in the rear with the Oil Filled Diff. Still to long to really fit correctly. The universals went into place, but they were still long enough to compress my Diff to the point it wouldn't rotate freely, and would literally grind the gears when turning it manually.

I don't have much of any experience with Tamiya, has anyone run these combos, and what am i needing to replace to make these shafts fit properly?

For Tamiya #53792, you need to be aware of the following'

Compatible Chassis
TT-02*1, TT-02D*1, TT-01D Type-E*2, TT-01 Type-E*2 & TT-01 Type-ES*2 Chassis
*1: Use with Item 54477 Gearbox Joint for Universal Shaft (TT-02), 53663 and 53806 pairing, or 53590 and 53671 pairing.
*2: Use with Item 53790 Cup Joint for Universal Shaft (TT-01, DF-02), 53663 and 53806 pairing, or 53590 and 53671 pairing.

I’ve made a guide on how to give a TT02 ARS / Toe control rear suspension.
Click here


Tt02 rear toe steering guide

Thank you very much for this post!

My TT02 drift car FRS next to the full size one.

New to this platform. Currently run a MTC2 in sportsman 17.5 TC/USGT. Wife was gifted this to get her out there with me. She has zero background in rc. I will however be building it, tuning/setup on this car. Any advice before I open the box and start building it? I want it to be the easiest thing to drive so that, she wants to play again after her first race. Is the box stock setup a good starting point? I have all the necessary setup tools and gadgets. The ultimate goal will have this setup for pro spec GT as this class is growing and has better drivers than the rookie class. For now, she’ll probably spend a year in rookie. I need her to be successful so we can do this together and have fun. I don’t mind buying upgrades like the universals to smooth things out or beef things up. Within reason. I had a TA07 PRO that I upgraded to an RR and spent stupid money doing that. Never again. Would have been cheaper to buy 2 RR KITS. So, I have experience, understand directions and made many stupid mistakes and learned from them. Hence why I come to you humble, asking for some advice. Thanks for your time. 9 years of posts makes for a long read and she wants to drive this thing like…..yesterday. I need to move on that excitement while it’s hot.

I am assuming you picked up a basic kit that comes with a body and not. TT02-R? If so

For ProSpec I recommend the following
1. aluminium prop shaft and prop join 54501/54502
2. super CVA shocks 54753
3. 54874 Adjustable arm set
4. 54875 gear diff x 2 or 22049 (newer version)
5. 53500 TT02 high speed gears with 64/29 gears.
6. If you prefer to run a spool in front: 54649 diff locker, or new spool 22047
* Note the newer parts that start with “2” are not yet on the ProSpec list as they were released for XV02 but are TT02 compatible
7. CVDs. If you get 4 and 5 then you will definitely needs CVDs as those plastic dog bones and drive axles wont work.. plus they’re prone to popping out so becomes a hassle.

This is honestly all you need. The rest of the hop ups will not make a difference in ProSpec. Proof being at last TCS 1st and 3rd (Me) were TT02 RR maxed with hop ups. 2nd was TT02 made out of spares with 1-5 that I listed. It was a very close battle.

Where to buy. Check out PlazaJapan. With the strong $, you will pay 60% less for these parts than an LHS! 👍

great info! Thank you. We did however get the TT02R kit.

Great! Saves you on quite a few hop ups.

Hey all
I picked up tt02 to club race. There is no restiction on batteries. I figured short lipo would be the way to go. Does anyone have a short hold down kit? Or a OEM looking mod that would work.
I plan on running the highspeed gear set with the torque tuned. I assume 69/29 is the way to go. Its a local parking lot pretty tight.

Thanks

I am not sure a spool or diff locker is a good idea for a new driver. It's more twitchy.

Not necessarily. I have a TT02 (albeit a fully hopped-up SR version) which is equipped with a front spool. That car is the easiest to drive (probably also the slowest, due to motor and gearing restrictions of that particular class ) of all my cars, and even though I'm not new driver, I can tell it's very much beginner-friendly. Is a spool / locked front diff a must have? Probably not, since TT-02s usually don't compete against top tier cars, but it's nothing to be afraid of either.

Spool makes the car much easier to drive, unless you put it in on the wrong end 😉

ProSpec is sssssllllllloooooowwww racing.. you can sip your coffee while going down the back straight and still have time to make a correction lol.

I forget if the TT02R comes with ball bearings. Don’t forget to purchase those.