New Products Flash Sale
Thread Tools
Old Jul 09, 2015, 10:09 PM
kurtataltos is online now
Find More Posts by kurtataltos
Registered User
Joined Dec 2014
111 Posts
Discussion
Radian Spoiler Connection to Receiver

Ignorant question: when installing two servos in Radian wings for spoilers, what is the typical way to extend the wiring to the receiving and...connect the two servos together. There has to be some simple wiring "T" harness or something.

Insights appreciated.

Thanks !
kurtataltos is online now Find More Posts by kurtataltos
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 09, 2015, 10:47 PM
rev.iain is offline
Find More Posts by rev.iain
Mesa AZ, it's a dry heat!
USA, AZ, Mesa
Joined Oct 2004
702 Posts
Reasonable question.

Yes, but it is called a "Y" connector. The only caveat is that the direction of rotation of the servos needs to be taken into account.

Both servos need to move in the same direction as they will be driven by the same signal. This can be achieved by orientation of the output arm, i.e. output arm toward root or toward tip.
Lay the servos on the bottom of the wing and check this out before cutting any foam.

I did this modification and found that flaps 1" X 12" worked just fine.

Iain
rev.iain is offline Find More Posts by rev.iain
Reply With Quote
Old Jul 09, 2015, 11:24 PM
kurtataltos is online now
Find More Posts by kurtataltos
Registered User
Joined Dec 2014
111 Posts
Thanks Iain
kurtataltos is online now Find More Posts by kurtataltos
Reply With Quote
Old Jul 10, 2015, 01:12 AM
Petem is offline
Find More Posts by Petem
If it flies - I want one!
Petem's Avatar
Australia, VIC, Werribee
Joined Jul 2008
1,230 Posts
Radio?

It also depends on what radio you have available - if you have enough channels you can put each spoiler on its own channel and set throws and direction as you want.
Typically, you will have the servo lead extending from each wing root by a few inches (or cm if preferred), then a 'Y' lead or two extension leads from the receiver to hang out from the wing root - you don't want to be trying to thread plugs and leads through to the receiver every time you assemble.
All this will probably require some foam surgery to allow the leads to run where you want them, as the Radian has no provision for extra leads.
Have fun,
PeteM
Petem is offline Find More Posts by Petem
Reply With Quote
Old Jul 10, 2015, 08:26 AM
kurtataltos is online now
Find More Posts by kurtataltos
Registered User
Joined Dec 2014
111 Posts
Thank you PeteM !
kurtataltos is online now Find More Posts by kurtataltos
Reply With Quote
Old Jul 10, 2015, 08:30 AM
Lou is offline
Lou
Find More Posts by Lou
Lou
Ground Penetration Tester
United States, VA, Waynesboro
Joined Dec 2005
6,595 Posts
You will need a 7 channel receiver to put flaps on separate wiring and separate channels. 6 channel receiver if using the 'Y' cable.
Lou is offline Find More Posts by Lou
RCG Plus Member
Old Jul 10, 2015, 09:28 AM
kurtataltos is online now
Find More Posts by kurtataltos
Registered User
Joined Dec 2014
111 Posts
Lou... 6 channel? If my Radian had ailerons... I suppose. But with a RES version, shouldn't 4 do it (with one channel for the throttle). I'm a newbie so my questions are bit mundane. Thanks !
kurtataltos is online now Find More Posts by kurtataltos
Reply With Quote
Old Jul 10, 2015, 10:55 AM
Lou is offline
Lou
Find More Posts by Lou
Lou
Ground Penetration Tester
United States, VA, Waynesboro
Joined Dec 2005
6,595 Posts
Whoops sorry about that. I was thinking for some odd reason the Radian Pro. Should of had my coffee before posting.

Yep, 4 channels should do. Motor, rudder, elevator and spoiler/flaps if 'Y' harnessed for the spoiler/flaps.

Are you using these as true spoiler, where they go up or as flaps where they go down?
Lou is offline Find More Posts by Lou
RCG Plus Member
Old Jul 10, 2015, 11:06 AM
kurtataltos is online now
Find More Posts by kurtataltos
Registered User
Joined Dec 2014
111 Posts
Lou, true spoiler. Go up, deploy, come down. I have pureed a couple Radians (one was "shot down", literally, by a pellet gun or sling shot) and the electronics survived. So...I am considering taking the "spare" servos and mounting them in the wings, tag line out to the wing root, maybe magnets for closure as the swing arm just needs to lift a piece of training edge material with tape hinges. Need to get the Y connection cable.
kurtataltos is online now Find More Posts by kurtataltos
Reply With Quote
Old Jul 10, 2015, 11:36 AM
Lou is offline
Lou
Find More Posts by Lou
Lou
Ground Penetration Tester
United States, VA, Waynesboro
Joined Dec 2005
6,595 Posts
I generally prefer spoilers over flaps. Remember that you will need to use elevator when you deploy the spoilers. Is this what you had in mind? ....

http://www.rcgroups.com/forums/showp...&postcount=925
Lou is offline Find More Posts by Lou
RCG Plus Member
Old Jul 10, 2015, 11:36 AM
kurtataltos is online now
Find More Posts by kurtataltos
Registered User
Joined Dec 2014
111 Posts
Yes it is ! Thanks Lou.
kurtataltos is online now Find More Posts by kurtataltos
Reply With Quote
Old Jul 10, 2015, 11:38 AM
Lou is offline
Lou
Find More Posts by Lou
Lou
Ground Penetration Tester
United States, VA, Waynesboro
Joined Dec 2005
6,595 Posts
You are welcome. Modding these birds is half the fun of owning them. Good luck with the mod and show us a few pics when you have finished it up.
Lou is offline Find More Posts by Lou
RCG Plus Member


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Spoiler install on Radian kurtataltos Thermal 4 Apr 12, 2015 01:16 PM
Discussion Radian Spoilers Roger Rocket Sailplane Talk 1 Jan 14, 2014 11:11 AM
Link Radian with Spoilers RECORDCAP Parkflyers 5 Feb 25, 2010 10:17 PM
Discussion Radian spoiler/flap mods Andy W Electric Sailplanes 18 Oct 26, 2009 10:27 AM