SUPER GLUE!!!

Get any tire glue. It will hold better. Don't forget to clean and scuff the rims and tires.

How would you have a half tooth pinion?

yes, any pinion will "work". 17.5t is how many turns the motor is.

Seems like quite a few are running the tt02 r or rr.

I actually got the RR - seems like its the same as the R except for the blue chassis. It has all the main upgrades but I ordered a few more while staying within TCS rules, like the aluminum steering, motor heatsink, etc. To bad TCS doesn't allow the screw upgrade from the S... not so much for the weight savings but so that I don't have to use a Phillips screwdriver. I'll run this in our local USTG class to see if it is competitive. I'm very new to Tamiya in general. I know they have the 'pro' 419 chassis but that is to expensive for me since i'm in it mostly for fun and as a hobby. Hopefully this TT02 will be good enough to use in the USGT class.

Rear for drift, front for circuit.

With the standard 'open' gear diff, more power is sent to whichever wheel is easier to turn. So in low traction conditions it will send almost all the power to whichever wheel has less traction, making it spin faster, and minimal power is sent to the wheel with more traction. You're probably familiar with this when 2 wheel drive car does a burnout and only 1 wheel spins - this is because it has an open diff.

When you install the lock block both wheels turn at the same speed regardless of traction. So under low traction conditions the car is able to break traction at both wheels simultaneously. If you put heavy grease (e.g. tamiya AW grease) on the internal diff gears then you can achieve a 'limited slip' action which is somewhere between locked and open.

For drifting, you want to put the lock block in the rear and have the front diff as open as possible (minimal grease on gears). This will allow both rear wheels to break traction and the rear of the car to slide, meanwhile the front will spin 1 wheel and generate minimal forward traction which would otherwise cause the car to straighten up out of a slide.

For racing, you want to put the lock block in the front and have the rear open. This makes for a handling characteristic which tends to understeer rather than oversteer, making it easier to control. The car generally goes in whichever direction the front wheels are pointed and the rear does not easily slide since only 1 rear wheel will break traction if too much throttle is applied.

TT-02 Gear Diff. The pic seems like missing some parts? a cross pin and 2 more satellite gears?

https://cimg3.ibsrv.net/gimg/www.rct...2e470ac2b8.jpg

I find it interesting the Oil filled diff has 2 gears but the stock non sealed diff has all 4? Granted the stock tt02 has plastic gears, but how much would it actually cost just to include the 2 gears and cross shaft?

Anyone know how to keep the stock aluminum pinion gear from wearing out? I can't change to a different kind. It has to be that one. Used kit tamiya grease on one car and real car synthetic bearing grease in another car. They both lasted about 6 races. Should I not use any grease?

They seem to not care... I'd just use another same size pinion. I run mine dry, and they last a lot more than 6 races.

3racing diffs are a much better option, mine are still leak free and running smooth

What pitch are the gears?

Love the expression Metric 48p :-)

To be precise, the module is 0.4, so it is compatible without being compatible...

As Airwave stated, its simply 0.4 you should be able to do a online search for 0.4 pinions. Tamiya of course makes them and I believe Scorpion does as well, for helos. I run tamiya no issues.

https://www.tqrcracing.com/shop/prod...ord=0.4+pinion

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: https://www.rctech.net/forum/electri...tch-gears.html

The 0.6 Module is (Metric) Tamiyas version of 48 Pitch (SAE), close but not same discussion to be found here: https://www.rctech.net/forum/rookie-...-64-pitch.html

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.