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Author Topic: Sanwa .tranny .not new .  (Read 4451 times)

dave301bounty

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Sanwa .tranny .not new .
« on: August 10, 2010, 07:17:06 PM »

 Help wanted .I have a Sanwa transmitter compleat with two 6 channel recievers ,and 3 servos .these were purchased new ,never used .now I know the wires are different ,but what colour goes outside ,for the reciever battery ,I like this set ,and intend to use it ,and as my project is getting to the stage of thinking where every/thing goes ,thought better check on Radio gear ,but this Sanwa colour code has beat me .Plus I have to wire up a sail servo for this job ..any help will be much appreciated.  Dave .
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malcolmfrary

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Re: Sanwa .tranny .not new .
« Reply #1 on: August 11, 2010, 10:39:26 PM »

A, its really the Sanwa RECEIVER thats the problem.
If nobody comes up with a sensible suggestion, my way, apart from goggling a lot for official Sanwa information, would be to open the RX case, and look for an electrolytic capacitor (one of those probably pale blue little dustbins), see which connection was -ve, and chase the track back to the pins.  Or look at the I/C number, goggle for its datasheet to tell me which pin was ground, and chase the printed circuit tracks back from that.
One row of pins will be the common ground, the other common one has got to be +ve, which leaves the signals being the one thats left.  This can be double checked by chasing those tracks and seeing them go all over the place.
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Shipmate60

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Re: Sanwa .tranny .not new .
« Reply #2 on: August 11, 2010, 11:14:49 PM »

Hope this helps:

The wires on the old Sanwa plugs are, red (+), center black (-) and the outside black wire is the signal lead. Just match them up to the wires on the new servo leads. New leads will have red for + and black or brown for - and usually white or yellow for signal.
When I did some of my old ones a while back. I just took new servo leads and soldered the wires directly to the circuit board in the servo.

Bob
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dave301bounty

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Re: Sanwa .tranny .not new .
« Reply #3 on: August 12, 2010, 03:24:24 PM »

To the guys who have answered my request ,got to thank you ,last night I allmost binned it ,however ,Now there is a glimmer of hope . But you see ,I am a compleat novice when it comes to little parts in recievers ,I shall try what I have been told , but tell me ,It must be essential the both batterys /packs are full ,because on my other not very good set there is a lot of twiching .is this trouble with exausted batteries . regads Dave .
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Shipmate60

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Re: Sanwa .tranny .not new .
« Reply #4 on: August 12, 2010, 04:10:44 PM »

Dave if you have the correct battery pack that will show you the positive and negative pins.

Bob
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dave301bounty

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Re: Sanwa .tranny .not new .
« Reply #5 on: August 12, 2010, 07:52:13 PM »

Bob .This is a Sanwa ,mark II. all I have is the transmitter .two  6 channel recievers ,and three servos . and the servos have the very different wiring ,red and two black .there is no batterey pack . I like this tranny ,because its got the throttle on the left ,I am a lefty ,and it has  four channell to my knowledge .Its a good looking /clean set .the original batteries are not with the tranny ,nor the reciever ,  I am half way up the gum tree .  I was at the top . regards Dave.
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malcolmfrary

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Re: Sanwa .tranny .not new .
« Reply #6 on: August 13, 2010, 11:16:52 AM »

A receiver battery either in poor condition or not adequately charged will give servo twitching due to the voltage not being stable under load, as will wiring in poor condition.  A digital meter (really cheap these days) is your best friend.
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Shipmate60

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Re: Sanwa .tranny .not new .
« Reply #7 on: August 13, 2010, 11:47:45 AM »

What is the receiver model number and any additional info?

Bob
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dave301bounty

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Re: Sanwa .tranny .not new .
« Reply #8 on: August 13, 2010, 02:54:29 PM »

Bob .First time I ever looked inside these . 921103 . is the only no .very neat they are  too.
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Shipmate60

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Re: Sanwa .tranny .not new .
« Reply #9 on: August 13, 2010, 05:52:56 PM »

So can you see the pos and neg side?

Bob
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dave301bounty

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Re: Sanwa .tranny .not new .
« Reply #10 on: August 13, 2010, 08:22:30 PM »

Do you mean those big blue things ,there is a pos and neg  on the base .of each one .
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dave301bounty

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Re: Sanwa .tranny .not new .
« Reply #11 on: September 07, 2010, 08:02:39 PM »

Dosent look like i,me getting far with this then .into the bin .
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Peter

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Re: Sanwa .tranny .not new .
« Reply #12 on: September 08, 2010, 07:34:08 AM »

Dave,

Try this link http://fatlion.com/sailplanes/servos.html.

It gives information on servo wiring, and the old Sanwa are the same as shown for Airtroncs. This is the name Sanwa use in the US.

I hope that this helps.

Peter
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dave301bounty

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Re: Sanwa .tranny .not new .
« Reply #13 on: September 09, 2010, 08:17:48 PM »

Thanks for this Peter .will have a try .
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hmsantrim

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Re: Sanwa .tranny .not new .
« Reply #14 on: September 10, 2010, 04:11:53 AM »

Hi dave.
                Any chance of posting some pix of your gear it would give a better idea of what you are looking for.
               
                is it a 27 or 40mhz
                  are these the servos you have or older  ??
                  

                   cheers frank


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hmsantrim

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Re: Sanwa .tranny .not new .
« Reply #15 on: September 11, 2010, 03:54:08 AM »

 hi Dave.
              I think I have your problem solved. Just looked in a boat which is getting refurbished.
                 It has the sanwa gear in it with the twin black and red wired servos.   
                   There is a battery box in it as well.    INTERESTED.... %%

                                 cheers Frank..
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dave301bounty

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Re: Sanwa .tranny .not new .
« Reply #16 on: September 11, 2010, 08:07:21 PM »

 YES  YES More than interested , tell me are these Sanwa sets a good system ,this is a40 meg ,and hardly used , if at all the chap I bought it off was ,and has packed up . I Dont want to mess up a good system ,the twiching and stuff was not on for long ,but i tell you this is all solid looking stuff .
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