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    Response
    Re: Ready for guns
    Hi Cash, "The plans show a servo with a large pulley driving a smaller pulley on the gun, this way you have a 120 degree servo driving the guns roughly 270 degrees, but I might see if I have the room to just direct drive the gun with a modified servo, or a store bought 270 degree servo " When faced with the same conundrum on my destroyer many years ago I found that gears were a better, more reliable option. Repeatable movement, easier than modding servos, and much cheaper than buying special servos๐Ÿ˜‰ Slowing the servo travel down is recommendable though, otherwise the barrel twitches back an forth like a fly swatter!๐Ÿค” Pic shows X and Y turret drive. The pulley drive to
    Y gun
    tends to slipโ˜น๏ธ as the pulleys are smooth, almost polished so little grip. Mod required! Cheers, Doug ๐Ÿ˜Ž PS the mountings are ball races left over from car restoration days๐Ÿ˜‰
    3 years ago by RNinMunich
    Response
    Re: Fire Monitors Part 2
    That's one way Martin ๐Ÿ‘ For the X and
    Y gun
    s on my destroyer I simply added 3 to 1 reduction gears, to the servo directly connected to X gun, giving ca 270ยฐ end to end.
    Y gun
    was then driven 1 to 1 by pulley drive. The green pulley belt I buy by the metre, cut to length to keep some tension on, and just glue with super glue. Still holding after 25 years or so๐Ÿคž Under deck the mountings are ball races with 8mm OD ally tube pressed in. The tubes transmit the rotation up to the guns. Above deck the gun mounts are the track cases of decades old potentiometers, as once used for volume controls etc. The guns and guards are all wood with a wooden spigot flattened on one side. The ally tube was also appropriately flattened on one side to key the 'plug in' guns. X Gun Capt. now has to be careful not to blast the bridge off ๐Ÿ˜ฎ "Cor, blimey! WHO threw that?" Strangely the Captain has given him special privileges on board๐Ÿ˜‰ Doug ๐Ÿ˜Ž
    3 years ago by RNinMunich


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