RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 780 views
Scorpion Power Scorpion Power
HelicopterGasser Model RC HelicoptersOther › Using Y cables for an additional slot on the RX
12-28-2008 03:23 PM  8 years agoPost 1
lejon

rrVeteran

Las Vegas, Nevada

My Posts: All  Forum  Topic

I am not sure this is the right location for this question, but it does relate to use on a gasser. There has been some discussion on the need to for 8 or 9 slots on the Rx so that the Jewell, Gyro control and or the governor can all be connected.

My question is: since the RX buss will allow you to connect the Jewell to any open slot would it work to simply use a short Y cable so that you could plug in the battery and the Jewell and only use one slot? Along those same lines could the same be done for the governor and the gyro sensitivity control or Heli Command 3? The thought is that if you are using a positive and zero or positive and negative to control the mode for these devices and wanted them to switch at the same time say ( increased gyro sensitivity and increased head RPM) and they were both connected to aux 2?

Has anyone done this and are there any issues?

Yes there is the option of purchasing a system with 9 channels, but for the sake of argument let’s say that one has a DX7 and the 7 channel RX and cannot/will not change.
Thanks

Lejon

PM  EMAIL  GALLERY  Attn:RR  Quote
12-28-2008 04:33 PM  8 years agoPost 2
pgkevet

rrKey Veteran

Wales

My Posts: All  Forum  Topic

Y cables are fine for additional power lines.. just make sure they are heavy duty ones... can use any slot(s) for them
BUT you cannot Y cable across signal lines without confusing the heck out of the signals. The gyro requires a pair of those signal lines if you want remote gain adjustment.. some gyros will live happily without that remote gain and set it manually. The governor usually requirs one signal wire to accept settings from the tx as to idle state and again doesn't need second (or third) signal wires if you don't need all it's functions.
If you do things like use the default gyro sensitivity slot for semthing else then you also need a tx which will allow you to program a new function to that default channel

pgk

PM  EMAIL  Attn:RR  Quote
12-29-2008 01:22 AM  8 years agoPost 3
bosshoss

rrVeteran

Chicago, IL

My Posts: All  Forum  Topic

Matchbox

IF and I say IF , you MUST have two devices on the same signal (channel), you could use a JR Matchbox to marry them, complete with different ratios, end points and centers.

THEN you could have your Gyro gain and GV1 RPM married on the smae channel. Seems like a lot of work, but it would work .

No problem backfeeding voltage to the bus with a Y, I agree. That is a commonality.

Why Hover a Yak, when a Heli does it better?

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
12-29-2008 04:05 AM  8 years agoPost 4
Excalibur

rrKey Veteran

Destination: Earth

My Posts: All  Forum  Topic

Or. . .

Since most gyros have only a single wire for their gain lead that plugs into an aux slot on your receiver, you could run the power and ground lead from the battery (or generator) into that same connector. This is the quickest and easiest way to gain the extra slot for adding generator power. By combining the two into one, you don't need a larger receiver OR a Y-cable.

You simply use a small screw driver or pin to GENTLY release the power and ground wires from the connector shell on the leads, then snap them into the gyro gain connector. Just make sure you have the polarity of the (+) and (-) leads correct, or you'll really screw things up.

I have used this method on both my old Predator AND on my new Spectra-G with excellent results, and it's better than using a Y-cable.

Hope this makes sense. Let me know if you have any questions.

Xcal

Camper Fuel: It's Not Just for Breakfast Anymore

PM  EMAIL  Attn:RR  Quote
12-29-2008 04:22 AM  8 years agoPost 5
lejon

rrVeteran

Las Vegas, Nevada

My Posts: All  Forum  Topic

Thanks, I will take a look at the setup and give it a try. Bosshoss and PGK I thought the Y cable would work except there would be a lot of extra cable to tuck away. Excalibur, I will take a look at the gyro and see if that will work, if not them I will use the shortest Y cable I can find.

Lejon

PM  EMAIL  GALLERY  Attn:RR  Quote
12-29-2008 10:10 AM  8 years agoPost 6
Pinecone

rrKey Veteran

Maryalnd

My Posts: All  Forum  Topic

YOu CAN use a Y to split the signal also. It is done all the time on planks with dual aileron, flap, and elevator.

To do so with the Gov and Gyro would require that the same output will give the desired result on both devices. To control the gyro gain, you need to be able to vary the signal in a certain range. So it depends on whether this will provide the performance out of the gov.

I know this won't work with a MGP because you set -100, 0 aand +100 to select the 3 gov head speeds. Some other govs take the signal and set the headspeed from the signal, so it will be unlikely that you will find one setting that will give you the proper gain and the proper headspeed.

Terry
Blade CP Trex 450 SE
QJ EP8v2 EX Gaui Hurricane 550
Vibe 50 Bergen Intrepid Gasser

PM  EMAIL  Attn:RR  Quote
12-31-2008 04:23 AM  8 years agoPost 7
rbort

rrProfessor

Franklin, MA - USA

My Posts: All  Forum  Topic

Good suggestions guys!

Excellent idea from Excaliber about plugging in the jewel power lines to the gain plug on the gyro, I like it!

Another thought if you are using a gv-1 you can plug the jewel into the mixture power on the gv-1. Hardly anyone uses this and it will transfer the power through the 3 lines from the gv-1 into the receiver.

Y cables will work for power as well as signal. I've combined gyro heading hold / Normal mode with gv-1 on / off on a Y cable when using dx-7 to setup a guy's heli. So basically if you go to normal mode, the gv-1 turns off, and if you turn it on you're in heading hold mode. Its not used alot, but good for the initial setup to allow you to trim the tail pushrod in normal mode and also to turn the gv-1 off momentarily to check mixture and engine heat from time to time.

-=>Raja.

MA 1005 Hanson 280, 4136 flts
Spectra 27 3DMax, 3200 flts
Whiplash V1 Hanson 300, 1430 flts
Whiplash V2 Hanson 300, 196 flts

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 1 page 780 views
Scorpion Power Scorpion Power
HelicopterGasser Model RC HelicoptersOther › Using Y cables for an additional slot on the RX
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Wednesday, November 22 - 6:34 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online