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Everybody’s Scalin’ – Overdrive / Underdrive and You

Whenever you wanna get really serious about fine-tuning the way your scale crawler handles, overdrive and underdrive gearing is something you absolutely should look into. I know that this can be confusing for some, so here’s a quick explanation for how it works. Overdrive (OD) and underdrive (UD) are measured by using the stock ring and pinion as a baseline. OD [...]


Everybody’s Scalin’ For the Weekend – Maximum Overdrive

When it comes to scale crawling hop-up discussion, over/underdrive gears never fail to confuse noobs. What does “overdrive” even mean? Will it hurt your truck? Click the “Read More” below to get the skinny on a mod that can help your Axial truck get its Billy Goat on.