I recently completed the turret on the Sherman and have finally dredged up photos to share. Rather than the traditional servo operated gun elevator, I rigged up an overly complicated, yet very cool mechanical device.
http://i752.photobucket.com/albums/xx165/cobra9431/IMG_0104.jpg The motor (right most) friction drives the threaded shaft, which moves the white nylon block back and forth, which in turn raises and lowers the arm that is shaped oddly enough as to avoid obstructing the charging pin on the markers bolt. Other than some issues with the mechanism binding up when raised or lowered fully, it worked great. http://i752.photobucket.com/albums/xx165/cobra9431/IMG_0102.jpg Above is the interior of the turret including the 30rnd hopper + 9 in the spring (feed tube) + 1 in the chamber for a total of 40rnds. Also there is the door lock actuator operating in tandem with a pivoting mechanism for trigger pull. And at the bottom of the photo is the mounting bracket for the 9oz CO2 bottle which reqires a almost too long coiled air hose (not pictured) to run the compressed gas back to the marker. http://s752.photobucket.com/albums/xx165/cobra9431/?action=view¤t=MOV_0115.mp4 A video is of course in order to show how well it all comes together. At the moment the whole tank is running only on 12 volt, which accounts for the slow speeds of the turret rotation, marker elevation, track speeds...................... well, just about everything. New bigger batteries are soon to be ordered to handle the increased duty load of a 24v upgrade. Aaron F SCAB T076 -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat
