The SkyWalker TallBike Project

Step 19 Photo 20 - Adding a chain guide pulley

One thing that did not show up on my 3D model is the chain interference problem. To solve this minor chain rubbing annoyance, a small idler pulley was installed as shown in Photo 20 so that the chain would not rub on the rear frame tubing. This pulley also helps to keep the chain nice and tight so that a derailment will never be a problem. As I have learned from past mistakes, a loose chain on a tallbike is not a good thing.