1387LikesTamiya TT02 Thread
05-02-2019 | 11:46 PM
#2013
Tech Initiate
Joined: Feb 2019
Posts: 45
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.
05-05-2019 | 09:55 PM
#2014
Tech Initiate
Joined: Nov 2015
Posts: 23
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.
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.
dampers looks like the next mod for the tt02. anyone have suggestions? i was looking at the trf big bore dampers 42287. suggestions welcome.
05-08-2019 | 07:06 PM
#2016
05-09-2019 | 06:46 PM
#2017
Tech Apprentice
Joined: Jan 2010
Posts: 72
From: Orange County, CA
I just finished building mine and also thought it was missing two gears but I trusted the design and built it. Seems to work the same as those with four small satellite gears, like the tt01, m07, even X-ray. But why would you choose to add the second set?
05-10-2019 | 10:32 AM
#2019
Just some dollars, not much. But I would not recommend this differential at all! It leaks badly, it isn‘t smooth at all, the metal gears dye the oil grey, it is the worst gear diff I have ever owned. If you have the chance, buy the 3racing gear diff for the TT02. No leaking and smooth running.
05-10-2019 | 11:36 AM
#2020
Tech Adept
Joined: Dec 2015
Posts: 180
From: Maiden NC
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?
05-11-2019 | 05:36 AM
#2023
Tech Fanatic
iTrader: (12)
Joined: Jan 2009
Posts: 939
From: Commerce Twp. MI
Just some dollars, not much. But I would not recommend this differential at all! It leaks badly, it isn‘t smooth at all, the metal gears dye the oil grey, it is the worst gear diff I have ever owned. If you have the chance, buy the 3racing gear diff for the TT02. No leaking and smooth running.
05-11-2019 | 07:21 AM
#2024
Just some dollars, not much. But I would not recommend this differential at all! It leaks badly, it isn‘t smooth at all, the metal gears dye the oil grey, it is the worst gear diff I have ever owned. If you have the chance, buy the 3racing gear diff for the TT02. No leaking and smooth running.
They should not have included metal gears at all.. should have stuck to nylon, derlin like other kits
You probably can sub the internal gears from another kit. I need to get my hands on one to figure out which kit.