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Model Forum / Radio Controlled / Air Models / June 2007Futaba M Series
Hi, I wonder if anyone can help me. I have a 1971 2 channel Futaba M Series with stripped gears in one of the servos, is it possible to use a modern day servo and swap the plugs over as I cant find any servos with FD 22M on any of the sites etc.If so what am I looking for. Many thanks if anyone can help. Best regards, Ben > Hi, > I wonder if anyone can help me. I have a 1971 2 channel Futaba M Series [quoted text clipped - 3 lines] > help. > Best regards, Ben IIRC any modern servo will work with the correct plug or you can buy a adaptor to use a new servo on an old reciever >> Hi, >> I wonder if anyone can help me. I have a 1971 2 channel Futaba M Series [quoted text clipped - 5 lines] > IIRC any modern servo will work with the correct plug or you can buy a > adaptor to use a new servo on an old reciever Hi Funfly3, Many thanks for the information, that was most good of you. Best regards. Ben If you can use a soldering iron, just cut the wires on the old and new servo and connect the old servo connector to the new servo. I usually slip about an inch of heatshrink tubing over each lead before joining and then shrink the tubing with a hair dryer or heat gun. Then bind the whole lot with insulation tape to give it a bit of strength. I would cut the old servo lead as close to the servo as possible so that the joined wires are not too close to the RX. It's best not to bend the wires where the join is HTH Trefor > IIRC any modern servo will work with the correct plug or you can buy a > adaptor to use a new servo on an old reciever > Hi, > I wonder if anyone can help me. I have a 1971 2 channel Futaba M Series [quoted text clipped - 3 lines] > can help. > Best regards, Ben Years ago I had a simillar problem and needed to use old and new servos with both types of receiver. I made up short adaptor leads using short servo extension leads. To make the adaptor I cut off the old style plug from the servo lead and soldered one cut from the extension lead in its place. I then soldered the old style plug to the remains of the extension lead. That way I could use any servo in both old and new receivers - with a newer reciever the servo plugged straight in, with the older receiver I used the adaptor lead. I believe that such adaptor leads were available from Futaba stockists but don't know if they still are. HTH Malcolm > Hi, > I wonder if anyone can help me. I have a 1971 2 channel Futaba M Series [quoted text clipped - 3 lines] > help. > Best regards, Ben Please observe the fact that old-time Futabas had a somewhat different pulse set-up: Min 0.9 max 1.8 mSec and midpoint/neutral at 1.4 mSec if I remember correctly. Today all(I assume)servos use the 1 - 2 mSec range with the midpoint at 1.5. So a modern servo equipped with the old ("sideways") plug would work but not have neutral at the neutral position. Can be trimmed and the horn can be moved etc. but see to that the servo is not driven beyond its limit at max ! /Staffan Sweden |
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