New Products Flash Sale
Thread Tools
Old Mar 22, 2007, 11:31 AM
fullscalepilot87 is offline
Find More Posts by fullscalepilot87
Registered User
Question

extra battery needed for retract servo?


I am considering getting a hangar 9 warbird (corsair or warhawk) and want to know how you can add an extra battery to compensate for the increased load of a retract servo. In serveral reviews of these birds it is mentioned a second battery is used just for the retract servo. how can I splice that into the system. I'm sure it might be common protocol but this is my first retract experience. Thanks.
Sign up now
to remove ads between posts
Old Mar 22, 2007, 11:39 AM
Viper Pilot is offline
Find More Posts by Viper Pilot
God is good
Viper Pilot's Avatar
Why not just increase the mA value of your pack, and add an extra cell?

My suggestion would be a 6-volt 1200 mA battery pack.
Old Mar 22, 2007, 01:49 PM
wellington53 is offline
Find More Posts by wellington53
Glenn
wellington53's Avatar
Would this take care of the problem of draining the battery if the retracts got stuck?
Old Mar 22, 2007, 02:48 PM
Viper Pilot is offline
Find More Posts by Viper Pilot
God is good
Viper Pilot's Avatar
No it wouldn't. But is adding a separate battery the solution. If I did that, I'd need 6 battery packs in my plane just "to be sure" - one for each servo.

Redundency is cool, but can get out of hand.

How about a seperate rx just for the retracts? Would that ease your worries?

Better to go with pneumatic retracts to be on the safe side!
Old Mar 22, 2007, 03:52 PM
abenn is offline
Find More Posts by abenn
Registered User
A separate battery for retract servos is a good idea, to guard against loss of volts if a servo stalls. I haven't done it myself (I've only tried pneumatic retracts), but I've read that it is done.

Not sure how, but I believe you need to make up a special Y-lead to send your retract servo lead(s) in two directions -- signal and ground (neutral) need to go to the appropriate channel in your receiver (with the positive lead disconnected), and neutral and positive go to the separate battery.
Old Mar 22, 2007, 03:58 PM
wylieruneyjr is offline
Find More Posts by wylieruneyjr
Registered User
I,ve seen where the guys used a Y harness and cliped one wire :the power line; And plugged it into RX then feed a switch lead into one side of Y the switch had a second batt on it. the other side of Y went to the retrack. Now you have to turn switch on to send power to retrack which is still controled by other batt and RX , But powered from second Batt. Most Y harness made up of three wires RED ,WHITE, BLACK, NOT SURE WHICH ONE YOU CLIP ,THE RED??????? YOU Only clip one wire on the lead to RX , WHICH WIRE ,THE HOT ONE ,YOU GOTTA GET VOLT METER TO FIND THE HOT ONE. I would draw a Diagram if I was More Computer literate.
Old Mar 22, 2007, 07:46 PM
Flying freak is offline
Find More Posts by Flying freak
Registered User
i have a plane i am put mechanical gear on still hsant flown it was a kit ultra sport 40 and im goignt to run 2 batterys you need another switch,battery,y harness clip the red wire (the positive its RED on JR stuff nt sure about other companies) now plug that end to the rx plug another end to the servos and the last end to a switch and and the switch to the exdtra battery i did it to because of the risk of a stalling servos.. i dont trust mecahnical retraks yet as this is my first set...
Old Mar 23, 2007, 09:44 AM
fullscalepilot87 is offline
Find More Posts by fullscalepilot87
Registered User
thanks; that is very helpful.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
separate BEC for retract servo? hul DIY Electronics 2 Apr 09, 2005 03:29 AM
Looking for retract servo coloradoz Aircraft - General - Radio Equipment (FS/W) 0 Feb 20, 2005 01:27 PM
Diagram/picture needed for 241 servo gears Lothar Thole Radios 0 Nov 26, 2004 05:44 AM
Separate battery for a retract servo? How? tim hooper Electric Plane Talk 17 May 05, 2003 07:15 PM