RCPRESS

The TD4 ball diffs are known to be disasterous. The front diff, even with the use of a metal T nut, will still have slippage problem due to poor design in steering (linkage and dog bone shaft problem). Our book on TD4 will discuss some workarounds. Order: https://www.lulu.com/shop/mike-yu/tamiya-td2-td4-rc-buggies-practical-upgrade-maintenance-for-beginners-rcpress2024/paperback/product-m2qmepq.html?page=1&pageSize=4

Gearbox covers removed, 13.5T brush less, gear ratio 3.7. https://youtu.be/sm7ADhIyE74

SNRC MTS FFV4:

The Tamiya Frog is a beloved classic in the world of 4WD buggies, but like many early RC designs, it has its quirks. One of the most talked-about issues among hobbyists is related to the front wheels and steering assembly. While the Frog was innovative for its time, the design of the front end can […]

The photos say it all: TT01E: Standard TT01:  

If your Lipo pack is 25C ~ 30C, powering a stock 540 (or anything up to 23T) shouldn’t be a problem. For brushless, a 17.5T without aggressive gearing would still be ok.

If you use standard size steering servo on the TD4, the body shell must have an opening to allow for smooth steering horn movement.

The photos show a tiny RC track designed by the government officials in Hong Kong. This track is located under the bridge in the Wan Chai District. It is so small that even a regular 1:10 with a stock silver can be too fast for it. The average track width is less than 4 feet… […]

The BD7 line evolved into the Yokomo BD8, BD9, and currently the BD11 and BD12 platforms. Even though the BD7 is now considered a vintage racing chassis in elite competition, it remains highly respected and still raced by enthusiasts in club-level and vintage-class races. Below shows a Yokomo BD7 with a Kyosho shell.