>| Bearing/casing/mount/hinge/pushrod loads depend only on the surface horn >length, >| in inverse proportion. Doubling the surface horn length will reduce these >| loads by half. >But pushrod loads would be in porportion to the horn length, not >inverse porportion. Double the horn length, double the load.
No. The horn length and pushrod force are related to the servo torque by horn_length * pushrod_force = servo torque For a given servo torque, doubling the horn length will halve the pushrod force, and vice versa. Example: If you mount a 10" horn on the servo, how much force would you have to apply at the tip of the horn to stall the servo? Not much. With a 1" horn, stalling the servo requires 10x more force. >Not sure what you mean by hinge or mount loads. The hinge, servo casing, bearings, mounting, etc. all see the pushrod force. Reducing the pushrod force via longer horns will proportionately reduce the deformation of these items, and give an overall stiffer system. Longer horns will also decrease any slop due to oversize horn holes or loose clevis threads. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
