Originally Posted by
magnumcyclonex
Go to
www.tamiyausa.com/tcs/rules and for the GT Pro Spec Porsche/Ford/Mercedes/Toyota class, there are specific rules and a full list of hop ups allowed under Article 15. DCJ's are NOT one of those hop ups.
Are we positive on that?? I just finished putting the direct coupling in mine last week, along with the oil-filled 2-gear diff (
54875) in the back. According to the specs:
3.16 Internal Drive Gears: You must use the internal drive gears called out in the chassis assembly manual. The internal drive gears of ANY chassis platform may not be altered, changed, or modified, unless it is done with the Tamiya Hop-Up Options designed for that specific purpose. Using different Pulley, Ring, and Pinion gears, from different chassis platforms, to create a hybrid internal drive ratio is not allowed. Furthermore, you are not allowed to file, machine, or Dremel the gear drive line to squeeze in a bigger pinion, and spur gear combination.
Article 15 doesn't really call out the direct coupler on its own, and the list they have at the end is just the 'recommended' hop ups. That sounds to me like its good to go? The packaging even says TT-02 on it.
Typeone - You'll need to buy the following pieces for the universal shafts, 54623 , 51700 , 51444. I picked up the direct drive coupler, the gear diff and the 53792 universals at the same time, then realized I needed to go back and buy those other pieces to make the shafts for the direct drive hah. You don't need to bother with the drive cups though. With the correct universal shafts, both the direct drive and the gear diff just use the cups that come with them.