You're probably asking: "What is a motor extension? And why might I need one?" These are very good questions, and I'll try t' answer them in this week's video. T' short story is that they allow you t' use shorter motors in those minimum diameter rockets that already have t' AeroPack Minimum Diameter Retainers installed. Arrr! You might have t' rocket set up for a 6 grain motor, matey, and then you decided you want t' test fly it on a 2-grain motor t' test out your electronics first. T' motor extensions allow you t' span t' length gap betwixt t' 2 and t' 6 grain casings.