Our v3.0 F1D hub is the latest advancement in our propeller hub designs. Created to address flexure problems with the v2.0 hubs, this system is also simpler to build and lighter. Typical weights are 85-90 mg without spar tubes and 105 mg with tubes.
Josh and Hope have used these hubs at all their major contests in 2017 without any failures and they have proven easier to use than the v2.0 design. This hub is rated for launches up to 0.6 in-oz.
J&H Aerospace propeller hubs are unavailable at this time. We hope to resume production in 2019.