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belouder
Mar 05, 2009, 12:27 PM
Ok-this one has been discussed before but I can't find a thread with a clear diagram or explanation so I thought I'd ask again!! Past experience has shown me (painfully) that these particular servos react poorly to reverse polarity (they fry faster than you can say, "what's that smoke?") so I'd like to get it right.

I have a bunch of Airtronics 94141 servos that I'd like to use. Some have the original Black/Black/Red (including two Tower TS-11 micros), most have the White/Blue/Red wiring. How do these line up with Hitec Yellow/Red/Black? Is the White the signal and just a matter of reversing (crossing) the Blue and Red? And on the Black/Black/Red?

I'm sure (I hope) someone just has a diagram all nice and neat that shows this.

Thanks,
BK

jtlsf5
Mar 05, 2009, 01:53 PM
B-

Old Airt: Red = +, Black (center) = -, Black (end) = Signal

Alternate: Red = +, Blue = -, White = Signal

HiTech, JR, etc. Brown/Black = 1, Red = +, Yellow/Orange = Signal

If you are using a JR/Hitech/AirtronicsZ receiver, you will need to change Red with Black (center) or Blue. You can do this by moving the pins in the housing and shaving off the three indexers on the old Airtronics plugs.

And yes, plugging these in with + and - reversed will let all the magic electrons out, never to return.

JT

belouder
Mar 05, 2009, 05:36 PM
Thanks Jim-all these have connectors cut off so will be wiring new connectors on. All JR/HItec.

Thanks for this,
BK

John Walter
Mar 05, 2009, 07:08 PM
B-

And yes, plugging these in with + and - reversed will let all the magic electrons out, never to return.

JT

Gee, when I do that it's the magic smoke that gets out!

jtlsf5
Mar 05, 2009, 07:15 PM
Gee, when I do that it's the magic smoke that gets out!

Yes, but its the rogue electrons getting all hot and bothered that cause stuff to smoke. They just hitch a ride... ;)