great knowledge share here

I had a break from the TRF421 and decided to race my TT02 against competition touring cars at the largest UK indoor race track.

I was pleasantly surprised

https://www.thercracer.com/2025/02/y...eview.html?m=0

Great write up!!

What kind of differences in setup would be needed for asphalt?
Also, those springs are xray springs correct? Do you have a part number?

Cool stuff - sorry if I missed it, but what was your final ranking, out of how many drivers? Any lap times / 5mn time to share, and how does it compare to the top dogs? Or were you actually the top dog?

Great Write up, I was in the final with you by the looks of it!

Impressive driving giving the chassis used, very impressive

Good stuff. The TT-02R and other variants are pretty capable once you chase down the gremlins and "un-crap" the setup. I found it pretty accepting of setup changes etc.

I'm late to the TT-02 game, looking for help on the build. Do I use rubber cement where arms go into chassis? I'm trying to shim some of the slop out of the arms but the drivetrain had a ton of slop around the spur gear, is that normal? It seems I will also be rebuilding the gear diff as well as that isn't very smooth either. Any tips would be great! TIA

No rubber cement!! To get the play out use shim kits.. they come in varying width of 0.1, 0.2, 0.3.

https://www.tqrcracing.com/shop/prod....asp?p_id=1809

https://www.tqrcracing.com/shop/prod...w.asp?p_id=623

https://www.tqrcracing.com/shop/prod...w.asp?p_id=622

Has anyone tried the new (42353) SSBB dampers with the (54947) v2 carbon shock stays (towers)? Is this a direct fit on my SRX? Thanks in advance!

The Tamiya TT-02 S/SR/SRX kits use different Carbon Damper Stay (Shock Towers) as compared to the stock TT-02/R/RR kits (Item 54947). Item 54947 is designed for the plastic upper arms on the basic TT-02 kits. Please refer to this link on Tamiya's website showing how Item 54947 is used...
https://www.tamiyausa.com/shop/optio...amper-stay-ii/

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Below are the carbon fiber parts you need from Tamiya for the TT-02 S/SR/SRX kits.

Tamiya Item# 54632 RC Carbon Damper Stay Front TT02 Type-S
https://www.tamiyausa.com/shop/optio...-stay-front-3/

Tamiya Item# 54633 RC Carbon Damper Stay Rear TT02 Type-S
https://www.tamiyausa.com/shop/optio...per-stay-rear/

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I have not personally used the SSBB shocks on any of my TT-02 S kits, but here is a link the THERCRACER.com website where he has used the Tamiya SSBB shocks on his kit. While their car is not specifically an SRX kit, it is using the same lower suspension arms. Also note that THE RC RACER used (2) front shock towers mounted upside-down to accommodate the shorter length of the shocks. Here is the link...
https://www.thercracer.com/2020/03/u...02-type-s.html

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Note: There are several aftermarket carbon fiber shock towers available that are less expensive than the official Tamiya parts, but I have never used any so cannot vouch for the quality.

I’m looking for assistance locating this part, not sure why it’s not easier to locate.

19804940 tamiya
MB11 Ballstud

Thanks,
Chris

Looking through the Tamiya TT-02 SRX manual, the part are asking about (19804940) is a Tamiya short 5mm ball connector nut and appears to be the same as Tamiya item# 42323
https://www.tamiyausa.com/shop/alumt...onnector-nuts/

It looks like that part is out of stock on TamiyaUSA's website. However, I bet you couldn't find part# 19804940 on TamiyaUSA's website. That is because Tamiya part numbers are usually listed as a 5, 7, or 8 digit number. So to find that particular part on their website, drop the 1st digit (1 in this case) and search for 9804940. Here is a link to a reference site confirming this information...
https://www.tamiyabase.com/parts/15086-19804940

It looks like you can buy this part directly on TamiyaUSA's website here...
https://www.tamiyausa.com/shop/7-dig...tor-nut-42301/

I was able to find part# 42323 at TQRACING (directly and thru Amazon 3/6/2025) here are some links...
https://www.tqrcracing.com/shop/prod..._keyword=42323

Which TRF dampers are the current go-to for a standard TT02 (non-s)? It looks like maybe the 42102, is that correct? They’re for an asphalt Porsche cup car, so will be looking for ~5mm ride height and wanting to make sure I get the right length shocks. Thanks!

What parts are required to run on the rear for the active toe?

Check out this article on TheRcRacer website, which includes photos & parts/#'s used for the mod...

https://www.thercracer.com/2022/07/t...trol-rear.html

They added active rear steer to a stock TT-02, but did admit in their review that any improvements could be simply because the mod had more rear toe than a stock TT-02.

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TheRcRacer also added active rear toe on a TT-02-S kit (but it should work the same on an S/SR/SRX) kit. Here is a link to that article showing pictures and parts used...

https://www.thercracer.com/2020/03/u...02-type-s.html