reenmachine 0 Posted October 15, 2008 We're forming a spec class at our track for open-wheel Tamiya F1 cars. The handout motor is a custom 27T 30 brushed. I am installing this 93t spur: http://www.tamiyausa.com/product/item.php?product-id=53104 I believe the 0.4 module spur is compatible with standard 64p pinions (is this correct?) Medium-sized outdoor asphalt track with decent grip, 8-minute mains. Any suggestions for pinion size? Share this post Link to post Share on other sites
