The Hirobo HI2511014 cross member, sized M3 x 30-S, serves as a mid-frame connector for radio-controlled helicopters. It is designed to stabilise adjoining frame plates and to route concentrated loads between bolt points without changing the primary airframe layout.
Fitting is straightforward for anyone used to M3 fixings: line up the cross member with the mounting holes, confirm clearance to nearby components, and secure using suitably sized M3 screws or studs. Hardware may not be supplied, so check the screw length against your stack before committing to assembly.
In practice this cross member helps limit frame movement under vibration and aggressive inputs, which improves repeatable control responses. Regularly check attachment points and thread condition after initial flights to ensure ongoing performance.
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