R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Radio and Electronics

Thread Tools Search this Thread
Old 02-22-2011, 10:00 PM   #1
Tech Apprentice
Join Date: Dec 2010
Posts: 85
Default converting RX/servo power from 6volt to 7.4volt

I was thinking about splicing wires from the ESC main battery feed before it hits the ESC, with a servo wire with a male end and plugging it into the one of the empty channels on the RX,,, I would also cut the red wire from ESC that provides power to the RX since its only 6 volts.
I have a 2s 7.4 volt - 5000mah - 40c lipo battery.
Tekin Redline 8.5 with RS-Pro.
Would this wreck my receiver, can it handle the power ? ? KoPropo 409s RX
Would this draw power away from motor and make it cog or cut out when I turn the wheel.
I am looking for the extra speed and torque that can be obtained from 7.4 volts.
toggle is offline   Reply With Quote
Old 02-23-2011, 01:20 AM   #2
Tech Addict
Join Date: Dec 2008
Posts: 729

just get a faster more powerful servo, probably a lot cheaper in case you do destroy the ESC.
Car-less (Velox V10 or 733) // RB T10.5"+" (JB Modified) // Bluebird BMS-990DMG (St) & BMS-631 (T/B) // ATS 16% // Capricorn Wheels // Protoform
"70% of the time, it works ALL the time"
DJ_Shakespear is offline   Reply With Quote
Old 02-23-2011, 11:17 PM   #3
Tech Apprentice
Join Date: Dec 2010
Posts: 85

Originally Posted by DJ_Shakespear View Post
just get a faster more powerful servo, probably a lot cheaper in case you do destroy the ESC.
I was thinking more like
for 6 volt = JR DS-8717 or DS-8711
7,4 volt = JR DS-8717HV or DS-8711

for 1/8 buggy Hitec 7955 or JR DS-8711

I fly airplanes, big airplanes,, and that is where you can really tell a quality servo,,,, JR and Futaba are unmatched in gear mesh for smoothness and performance and zero out perfect everytime...
Im new to the RC short course racing, and looking for all the info I can find on the different products.
I looked at Savox and KoPropo,, those looked like good servos, and had some good numbers.
Im guessing that the ESC's from the manufacturers will be onverting to 7.4, since the servos companies are all making them.
too bad I just built 3 trucks with the RS-Pro and Havoc Pro ESC's,, they will probably be out teched by the end of the year.
to your advice of get 6 volts, probably good, LOL,,, I got both the JR DS-8711 & 8717,,,, (6-volts)
toggle is offline   Reply With Quote
Old 02-23-2011, 11:37 PM   #4
Tech Master
Join Date: Jul 2008
Location: Melbourne, Australia
Posts: 1,465
Trader Rating: 3 (100%+)

Dont think the ESC manufacturers will be in a hurry to make internal bec's operate at 7.4v

Most of them are struggling to get them to function at 6v

If you want to run a HV servo you really have 2 options at the moment

1. Run an external bec at 7.4v straight to your RX (assuming it cant handle the voltage)

2. Run an external bec straight to your servo (will require the signal wire from the RX) and use your internal bec to power the RX

Slash Platinum
Xerun 150, Tenshock SC401 3500kv
Gensace 40c
crusey_aus is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -7. It is currently 09:15 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net