What are Parma Double Wheel Adapters and How Do They Work?

In the 1980s, Parma created one of the more unusual hop-ups that allows you to put double wheels on both the front and rear axles of your Tamiya Frog, Grasshopper, Hornet, and Blackfoot radio-controlled model vehicles. We take a deep dive into exactly how this hop-up option works and both the advantages and disadvantages of the mod in this episode of the RC Deep Dive podcast.