Now I have another question

Standard TT02 comes with GB1 diff case
TT02-RR comes with GB2 diff case where gear diff oil is possible.

Outdrive cup for GB1 & GB2 are different.

Now, if I want to lock the front diff, Tamiya 54649 TT-02 Diff Lock Block can be used in GB1 or GB2 diff case???

You can use that option, or you can throw some epoxy into the diff case and let it set. That’s what I did on my sons car.. has held up very well.

What alu servo mount is recommended???
RM01 or TB-03???

Same time just found out Tamiya 54977 TT-02 Aluminum Servo Mount will be coming soon..

I think the TB03 one is similar to the TA05 servo mount which I use. Doesn't really matter, servo mounts are one of those generic parts that work on lots of cars

There are 2 servo mounts for TB-03, left & right & I do not understand why the difference

http://www.tamiya.com/english/products/54091/index.htm

http://www.tamiya.com/english/products/54090/index.htm

The inner (or left) servo mount is located below the prop shaft, so it needs to have a lower height than the right one.
You also have to cut away the half of left
​​​servo mounting flange to clear the prop shaft. Kind of weird...
Michael

Hi... Michael,

Thanks.

Tires for asphalt bashing
 

Just picked up one of these, a Mustang GT4. Haven't raced RC in 20 years, but needed some at-home stress relief and this fit the bill.

I'm never going to race this thing, but I added bearings and oil dampers because plastic bushings and Tyco friction "shocks" just hurt me on any car that looks this good.

Only other upgrade I plan on are tires. Kit slicks are slippery and I can tell they're going to wear fast too. What tires would you all recommend for parking lot bashing? HPI X pattern radials seem to be gone, I see a ton of no-name knock off brands (no idea if there are hidden gems buried in these), and Tamiya options seem OOS or hard to get everywhere. I'm looking to stick with 26mm width, to use the kit wheels.

There is a set of 4 tires with inserts from Ride RC:
Ride 26mm
I did not use them up to now, but I think they are worth testing.

Anybody know what part # I need to use these metal diffs in a TT-02? The plastic diff housing (outdrive cup?) that comes with the kit has four holes so it doesn't fit. I've got all the other internal and prop shaft gears I just need the diff housing.

https://cimg9.ibsrv.net/gimg/www.rct...fabae44b49.jpg

If you live in the US, you can get them pre-mounted from Gravity RC for $25 a set:

https://www.teamgravityrc.com/home/USGT-TIRES-c37393544

Repost

Im not sure if either of those fit properly but it looks like Tamiya are releasing a TT02 specific aluminum servo mount (54977) so it might be worth waiting for

In the official Tamiya hop up parts catalog for TT-02 chassis Servo mount 54090 is listed for use. 54090 is right hand Aluminum servo stay of TB-03.

Are they from the DF02 buggies? They look like it. I use them in my TT02B and just needed the diff housing from the DF02 and the outdrives, dogbones etc all worked fine with them. I just had to file down the diff pinion gear which was easy to do. Its a really common upgrade for the TT02B with brushless motors.

I don't know the part numbers without searching, but the Gravel Hound and Plasma Edge were models on the DF02 chassis.

You’ll need Tamiya 51008 differential internal gears from the TT01. This will allow you to use the stock keyed outdrive cups. You can’t use the TT02 differential internals because they have 4 planetary gears laid out in a cross. This ring gear has 3 screws and will need the 3 internal planetary gears laid out in a triangle.

For the diff housing, you’ll need 51004 also from the TT01. You still have the issue of the plastic pinion gear driving the steel differential gear. Which may not cause issues initially, but might wear out that plastic gear sooner.

I'm not sure where they are from, I got them with my TT-02B kit. I bought it used and it came with a bunch of extras. Thought I had everything for these metal diffs but I didn't notice the different hole pattern.

I have the 3 metal internal planetary gears laid out in a triangle and the metal pinion gears (propeller shaft gears) so I'm set there. 51004 is exactly what I was looking for! Thank you.

They are from the DF-02.

Paint, finally.
https://cimg3.ibsrv.net/gimg/www.rct...4bec7a32f5.jpg

TRF Dampers
 

Hi,
Need help from Tamiya experts here.
I am in the process of finishing my TT-02 & looking to spend on a set of TRF ALu Damper set.
I got confused by the choices available.

Based on my own study & research, below are my findings:

(A) TRF Damper set (53571)
From Tamiya -length when assemble = 61.5 mm

(B) TRF Special Damper Set (42102)
From Tamiya - more advanced than (A) 53571
My conclusion - length = 61.5 mm

(C) TRF Short Damper set (42273)
From Tamiya - 4mm shorter than TRF Special Damper (B) 42102
My conclusion - length = 57.5 mm

(D) TRF Big Bore Damper (42287)
From Tamiya - OD remains unchanged, ID is bigger, so 10% more oil
My conclusion - length = 61.5 mm

(E) TRF Big Bore Dampers + (42354)
From Tamiya - Compared to TRF Dampers, this set comes with better parts
My conclusion - length = 61.5mm

(F) TRF Super Short Big Bore Damper (42305)
From Tamiya - this set is 6.5 mm shorter than TRF Special Damper, 1.2 mm wider cylinder interior
My conclusion - length = 55 mm, not sure about the body OD.

(G) TRF Super Short Big Bore Dampers + (42353)
From Tamiya - this set is 6.5 mm shorter than TRF Special Damper, 1.2 mm larger cylinder internal diamater, better parts than (F) 42305
My conclusion - length = 55 mm, not sure about the body OD.

Questions:
1) If my findings above are correct in term of damper length, (A) 53571, (B) 42102, (D) 42287, (E) 42354 can be used on TT-02 with its original plastic damper stays. (/ shocks towers)?????

2) What about springs, do they all (A, B, D, E) share exactly same size of springs???

Let me know what you think.

Thanks

1: you want to use the first TRF dampers on your list.

2: no, springs can only be used by bore size. The older design springs (small original bore) long or short can work. None of the big bore springs will work on small bore dampers.

There are option parts you can buy to change the upper shock mount to use the big bore lowers them) but really the original TRF dampers are the ones this chassis was designed for.

I built my TT02 with the (plastic) super mini CVAs specifically marketed as for the TT02 (54753), and they build to 55mm eye-to-eye. A 61mm shock is going to be almost fully compressed @ ride height - I can't imagine that's the correct choice for this car (non-Type S)...

OK, guys

Need your help here.

From thercracer.com, it says with 42102 shocks & standard springs, it can arrive ride height of 5mm - 5.2mm

I put everything in, my right height is about 6.3mm now. My spring collar retainers are already at maximum height.
What did I do wrong???

What about you?? what ride height you are getting with the TRF shocks??

How far were your rod ends threaded into the shock shafts? Maybe they could go in a little further? Could the shock shafts in your particular kit be slightly longer than normal?

Did you use the long or short shock shaft eye?

Maybe it is due to different tyre diameter?

As silly as it sounds, what if the kit was built in the high or "rally" configuration by mistake?

the short one

Nope. no issue with the tyre diameter

I thought so.
Hence I rechecked everything & the kit was build as standard wheelbase, low.

I went thru the shock again & I did not see anything wrong.
Still wonder why I cannot let it go lower.

I highjack this thread... I m a fan of my type S/RR and now there hits a new aluminium steering the market (Tamiya - 54965). My is ordered and I m waiting, but anybody already drive the new hop up and tease pros and cons?

thanks

I just revisited thercracer site and checked the article.
The author mentioned a ride height of 5mm front and 5,2mm rear, but not how these are achieved. He is using the 42102 TRF shocks, but no indication which spring or other settings are needed to get there. So, maybe you are kind of misguided at the moment?

I had to use internal stops with the CVAs. I used an o ring on the fronts and the 2mm spacer from the shock parts tree to get where I wanted.

Has anyone seen that Tamiya is selling these Mercedes CLK TT-01E kits again?

$115 is hard to beat

https://www.amainhobbies.com/tamiya-...47437/p1172162

I just want the body.

Out in the parking lot playing around. The car likes to swap ends under acceleration. I would like to get more rear droop but the springs are too stiff. I set ride height and preload and get maybe 1 to 1.5 mm of rear droop. I'm running yellow fronts, kit rears. The beige springs seem softer than the reds. Ride height is 5.5 all around. I'm running internal stops in the shocks and the shimming preload with the spring spacers. If I take out the shims, I'm left with slop. I'd really like to find a longer, softer spring to allow more droop. Do I have to go aftermarket or is the a set of soft springs that works with the CVA shocks? I'm sticking with the CVA set as they are TCS legal for the class I plan to run.

I'm running the reds on the rear of mine. How many spacers do you have in your shocks?

I used to have 29mm springs in the CVA shocks of my TB-03. They are long enough to be installed without spacers.
MST 29mm springs
They are sold in pairs or in Sets of 8 springs. Maybe Set 820113 can be a good starting point for you: 820113 (buut no guarantee that they will have your needed characteristics)

liljohn1064 Have you tried the kit springs in the front and yellow in rear? Or yellow (that come with the CVAs) all around? I think those silver kit springs are stiffer than the yellow springs, which is going to make the car tail-happy.

Even with balanced springs (yellow) all around, I find it's relatively easy to get out of shape putting power down coming out of a corner. I suspect that the kit tires have a lot to do with it too.

OTOH, with only a torque tuned motor, changing to super sticky tires will eliminate any drama involved in driving this thing.

I completely agree. The kit springs are the softest. I have the hard set yellow on the front. They will come off. I ordered some Sweep 32 and 36 sets, both J type, the asphalt designation. I'm hoping for some better results.

https://cimg9.ibsrv.net/gimg/www.rct...c7afcff2a8.jpg

So I'm currently building the Tamiya TT02 universal shafts ... I machined this aluminum ring and attached to each universal wheel axle with some superglue. To capture the cross joint's pin and prevent it from coming loose.

https://cimg9.ibsrv.net/gimg/www.rct...070907fc94.jpg
Also tried something new here ... rubber cover on the universal joint to keep grease in and dirt out. I cut about 1" off the ends of Qualatex 260Q balloons to make these.