Home | Contact Us | FAQ | Search & Site Map | Link to Us
Sign In | Join | Other 45 Sites in Network
Home
Discussion Groups
General
ModelsRailroadsRockets
Radio Controlled
Air ModelsHelicoptersLand ModelsWater Models
ModelGeeks.com
Contact UsLink To UsSearch & Site Map

Model Forum / Radio Controlled / Water Models / November 2004



Tip: Looking for answers? Try searching our database.

Old Sanwa receiver

Thread view: 
Enable EMail Alerts  Start New Thread
Thread rating: 
Espen Johannessen - 14 Nov 2004 19:53 GMT
Hi!

I came in a slightly complicated situation when I had to fix an old RC car
recently. The old setup consists of old Sanwa servos and receiver. One servo
(and now also the other) broke and I replaced it with a new Futaba. To get
this to work in the system I had to switch the positive and negative cables.
I realized this after some trial and error, and I guess I might have
affected something in the receiver during this.

Now the receiver mirrors the directions of the servo's turnings. When I pull
the steering stick to the left the wheels turn right, and when I press the
power stick forward the car backs and vice versa! Do you know how to change
the directions or "polarity" of the receiver?

Another quesition; do you know if a new receiver will work with my old
remote control and the crystal?

--
Espen
Ron Olson - 30 Nov 2004 15:17 GMT
> Hi!
>
[quoted text clipped - 12 lines]
> Another quesition; do you know if a new receiver will work with my old
> remote control and the crystal?
Sanwa is now known as Airtronics, it was Sanwa then Cox/Sanwa before
becoming Airtronics. If it is an old unit, it may not be compatable
with the new narrow-band systems. This is why you are having
compatability problems using Futaba gear along with one system using
positive shift anf the other a negative shift radio system.
Jim Gill - 30 Nov 2004 20:40 GMT
>> Hi!
>>
[quoted text clipped - 17 lines]
>compatability problems using Futaba gear along with one system using
>positive shift anf the other a negative shift radio system.

This has nothing to do with the receiver. Simply that the Sanwa and
Futaba servos rotate in different directions for the same stick
movement. If the transmitter has servo reverse switches then use them
to change the servos direction. If it doesn't have servo reversing you
have a bit more of a problem. Try moving the horn on the servo through
180 degrees if possible. If this is not possible then try to get some
servos with opposite rotation. You might be able to get hold of some
older  sanwa servos as replacements.

Jim Gill
Dundee Model Boat Club
http://www.modelboating.co.uk
 
Sign In
Join
My Latest Posts
My Monitored Threads
My Blog
My Photo Gallery
My Profile
My Homepage

Start New Thread
Enable EMail Alerts
Rate this Thread



©2008 Advenet LLC   Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.