Safety trim wiring in parallel
Why does the safety trim kit have two wires for everything? Going to the Servo motor I have 2 20awg wires supposed to hook up to a single 22 awg wire. Is there an advantage for this? What is the best way to butt slice two larger wires to one small?
Also, the kitfox wiring schematic has two 14awg wires from the alternator. Does it need it for load reasons and if so why not use a larger wire? Is it for redundancy? Is it really necessary?
Re: Safety trim wiring in parallel
Makes no sense ... I've doubled up wiring when I needed a larger size, but
it doesn't really make sense to kit something like that. On the other hand
there's no harm in it it either ...
Jeff
Re: Safety trim wiring in parallel
Maybe I don't understand what you mean by "safety trim", but the pitch trim servo motor has 2 wires. The long wiring cable that comes in the kit also has 2 wires. Hook the two wires in the cable to the two wires from the motor. One will be power and the other ground, then vice-versa when you switch to reverse. This is too simple so I am sure I don't understand your question.
Re: Safety trim wiring in parallel
This is for the brand “safety trim”. It’s a controller that slows down the speed of the trim motor in faster flight. It also has runway protection etc. It’s wiring diagrams have a lot of the wires wired in parallel. So you would have two wires attach to the red and two to the black on the motor. And I’m not sure with a 18-22 butt splice if I can put two 20 gauge wires in One end.
Re: Safety trim wiring in parallel
TCW Technologies, one of our great site sponsors, makes this safety device.
Learn more about it here:
http://www.tcwtech.com/safety_trim.html#features
Re: Safety trim wiring in parallel
OK, now I see what you are talking about.
Re: Safety trim wiring in parallel
Josh, What model trim contoller do you have? Sounds like you might have a dual axis controller and harness for single axis use. Should have 10 wires for single axis and 14 for dual axis - none doubled up.:confused:
On current single axis models - #3 (yellow) should go to red (+) on the servo and #4 (also yellow) should go to black (-) on the servo.
Greg
2 Attachment(s)
Re: Safety trim wiring in parallel
It is single axis model ST-1-12v-2sp-HD
Here are pictures of my install instructions from TCW and kiyfox. Note pins 4,12 3,11 7,15 1,9
I just noticed that there is s note that says these parallel connections are for servos rated for more than 5 Amps. So why is the Servo itself a 22awg wire?
Re: Safety trim wiring in parallel
I don’t know why my pictures are posting so small. Hope you can still see
Re: Safety trim wiring in parallel
Your servo is likely rated for way less than 5 amps, hence 22 ga wire. If so this is the wiring diagram currently being used:
http://www.tcwtech.com/Installation%...20st-1-12v.pdf
Greg