In that case you probably have a 48P spur, and as such the regular 48P pinions will work. Many sell sets and such, so you have a range of gears. This is possible if running the High Speed Gear Set.

If not, the pitch you are looking for is 0.6 module. Those are regular Tamiya Pinions

As a correction the 0.4 Module is (Metric) Tamiyas Version of 64 Pitch (SAE), close but not the same discussion to be found here: Tamiya 0.4 gears & 64pitch gears

The 0.6 Module is (Metric) Tamiyas version of 48 Pitch (SAE), close but not same discussion to be found here: 48 Pitch, 64 Pitch

Try these 0.6 : https://www.tqrcracing.com/shop/product_list.asp?search_type=1&search_all=Y&p_keyw ord=0.6+pinion

Tamiya uses .6 pinions red cat has them as well. Robinson make some as well.

OK, time to bring up the crazytalk.

I have a Tamiya TT02b. That b means it's buggy. So, the standard for "wheeler" is 13.5 turn motors. This is... a pretty hot setup. Then you throw in the taller off road tires, and the torque and speed that the drivetrain sees starts to be a real problem.

My car is actually a TT02b MS, so I've got fiber shock towers, dogbones, metal rear uprights, etc. My particular setup, has a 3 racing aluminum steering rack, the blue stiff tub, TRF dampers.

This thing regularly strips the diff drive gears. Both the ring, and pinion end up getting eaten. I do have the diffs shimmed over, so the pinions get as much engagement as possible.

It also had a tendancy to eject drive dogbones.... But I think I have a method of addressing that. Tamiya released the carbon reinforced arms for the car, so those are happening.

"why don't you just buy a normal 4wd". Well... I should But I like to play the underdog game.

"better" is a difficult word. the TT02-rr is legal as a tub car. the TT-01 type S is excluded from most of the tub car classes.

If you're talking about the bevel gears in the diff housings, you can buy metal TT01 bevel diff gears. I found that out after I bought a pair of DF02 bevel gears and had to cut off a little bit to get them to sit properly.

Nope, i'm talking about the ring and pinion gear that is on the outside of the diff. I believe I"ve broken 4 pinions now.

The best solution I can think of is, funnily enough, using a TT01 differential with a DF02 ring gear since that's also metal. Unless there's someone out there who makes one or if Tamiya has made a metal ring gear for the TT02.

Just checked. RCJaz has a metal differential ring gear that's designed for the TT02 on their webstore.

You have 2 options. GPM make the gears in metal, so you can buy the full set including the internals which is expensive, or just the ring gear which is also expensive for a single gear but less so. RCJaz have the GPM gears

Or grab metal parts bag from the DF02 and the gear cases. This gives you enough to build 2 diffs for the price of a single GPM set. You need to file the pinion down a bit. I'm pretty sure its bag a, part 9400152, but you better check.

As a bonus the bag includes other bits like a 19T steel pinion which is a good match for a 13.5T and a bunch of those annoying self tappers Tamiya insist on using (I love Tamiya but wish they'd use proper hex head screws and bearings instead of bushings). Oh and another Tamiya hex wrench, you can never have enough of those.

I find that the metal gears slow the car considerably on the stock motor (have a couple TT02B's for my 5yo and his friends) but the 13.5T brushless setup like you suggested is the perfect match for the chassis and you don't notice the car being slower with metal gears on this setup.

The GPM gears (which I own..) are just the ring gears. Sadly.

So.. those gear sets, are the three gear sets, like in a TT01, so I'll need the TT01 casings to match that. STill, not a bad deal.

.................................. This is such a bad idea. But I really want this TT02b to work. hah.

Yep the DF02 gear set is the 3 gear so you need the cases

If you have the ring gear already...

https://www.rcjaz.co.nz/tamiya-tt02b-steel-propeller-shaft-gear-1pc-for-tt02-gpm-tt2100g2-p-90071612.html

thats the one you need right? There is also the complete set

https://www.rcjaz.co.nz/tamiya-tt02-steel-ring-gear-bevel-8pcs-set-for-tt02b-gpm-tt2100-p-90070804.html

you should see some of the builds on tamiyaclub, go nuts on the TT02, end up spending more than a TA07 /DB01 and they still won't perform as well. Fun though

any brands that produce hex screws for the tt02? i really dislike the philips. suggestions welcome!

Yeah Racing sells a Ti screw kit for like $14. I have used them in the past and they are decent for the money for sure