Modeltrainman Posted August 18, 2019 Posted August 18, 2019 As everybody who reads Train-Tech knows, I'm sure, I'm building a 2-4-0, locomotive, with the Powered Up train motor holding the driving wheels. Now that I think I got the driving wheels/rods working, I'm having a bit of trouble with the leading truck. Using the small steam leading wheels like on the EN, https://www.bricklink.com/v2/catalog/catalogitem.page?id=3165&idColor=63#T=C&C=63 connects to a 1x3 liftarm, then to 2x 3176, and it keeps trying to derail. How do I balance it? Also, how do I cut friction? The wheels are attached by a 3706, into 2x 2817s(Bricklink number) I don't necessarily need speed as much as I need few derailments, but I'd take speed, too. I'm really confused as a 1x2 liftarm like on the Constitution doesn't swing enough... Any help appreciated! Quote
Daedalus304 Posted August 18, 2019 Posted August 18, 2019 The number of rotation points, and where they are located, is key. For a 1-axle leading truck, you must have only 1 point of rotation, or it'll bunch up and derail. Ideally, you would have that point of rotation as close to the nearest flanged driver as possible. For 2-axle truck, you need 2 points of rotation as in the EN. Quote
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