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Thread: FlySky FS-GT3B modded for lipo use

          
   
   
  1. #1
    Team BYT crash dummy NickRummy's Avatar
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    Default FlySky FS-GT3B modded for lipo use

    Not re-inventing the wheel here but thought I'd post this up since I've seen it brought up before. Most people are now familiar with the FlySky FS-GT3B 2.4gz radio. I was getting tired of the radio going through AA's as I'm sure most people are. I modded my 3pk for use with a 3S lipo so I thought I'd see if this radio had room as well.

    First I removed the screws that held the two halves of the radio case together. At this time I also found out that the times my son has dropped the radio have took its toll! He must of cracked it right around the bottom of the pistol grip because instead of the whole half coming off, only the bottom came off. This allows the battery holder to come out.



    Here you can see where the housing cracked at the bottom of the pistol grip.



    Test fit with an older Zippy 1500mah lipo. This pack is pretty thick and surprisingly fit, I'll have to get a measurement but I'd guess most packs 1500mah or smaller should fit not problem.



    Quick little solder job, heated up the leads on the AA holder and they came right off, soldering up a deans.



    Screwed the half case back on and inserted the lipo and wa-la.


              
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  2. #2
    BYT Life Member Stampedevxl's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Sweet! Nice and simple, and the on- board.voltage meter means you wont over discharge thats cool!

    no need for a fancy stereo system...
    My stereo is under the hood

  3. #3
    BYT's Superman urjustamemory's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Hmm, I might have to try this on my Speky.

  4. #4
    BYT Member Whiplash's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    thanks Nick now Ive got another little project to do, whats the c rating of the battery? does it make a difference anyway?
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  5. #5
    Bronze Level BYT Member got nitro?'s Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Well i know what im doing when i make a HK order.
    Quote Originally Posted by NickRummy View Post
    Lower the center of gravy the better the handling!

  6. #6
    BYT Life Member E-savage's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Quote Originally Posted by Whiplash View Post
    thanks Nick now Ive got another little project to do, whats the c rating of the battery? does it make a difference anyway?
    20c and no t wont as the radio dosent have a huge amp draw.

  7. #7
    BYT Member Whiplash's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    thanks E savage, I figgured as much, I supposed this would work on my Traxxas 4 Ch as well
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  8. #8
    Team BYT crash dummy NickRummy's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Quote Originally Posted by Whiplash View Post
    thanks E savage, I figgured as much, I supposed this would work on my Traxxas 4 Ch as well
    Just about any radio it'll work no problem. I did this on my 3PK for a few years and this battery I have in the GT3B is the one from the 3PK.

    You could get away with a 5C or 10C pack no problem.

              
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  9. #9
    Now w/ Ti and Bone Screws! Kevin Van's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Just note, thou shall not try to use the onboard power jack to recharge.
    Everytime you say In*egy, a kitten dies. Please, save the kittens.
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  10. #10
    Team BYT crash dummy NickRummy's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Quote Originally Posted by Kevin Van View Post
    Just note, thou shall not try to use the onboard power jack to recharge.
    Good point Kevin

              
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  11. #11
    Bronze Level BYT Member got nitro?'s Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Also i wouldnt suggest using it in you trx radio, since there is no onboard voltmeter you stand a much bigger chance of over discharging and you know what happens there.
    Quote Originally Posted by NickRummy View Post
    Lower the center of gravy the better the handling!

  12. #12
    BYT Member lilbrett's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Could you mount something like this to monitor your voltage, and use it in a Traxxas radio?

    http://www3.towerhobbies.com/cgi-bin...&I=LXAPBR&P=FR
    Brett

  13. #13
    Now w/ Ti and Bone Screws! Kevin Van's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    You could do this, and i'd leave the buzzer off...

    http://www.aaroncake.net/circuits/lowvolt.asp
    Everytime you say In*egy, a kitten dies. Please, save the kittens.
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  14. #14
    BYT Life Member Stampedevxl's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    these already have a voltage meter on the main menu, that still works right?

    no need for a fancy stereo system...
    My stereo is under the hood

  15. #15
    BYT Member Whiplash's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    I was thinking about a small LVA in the TRX just to be on the safe side...I like my lipos to charge again.....
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  16. #16
    Team BYT crash dummy NickRummy's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Quote Originally Posted by Stampedevxl View Post
    these already have a voltage meter on the main menu, that still works right?
    Yup, I'll let it drop to nominal voltage or slightly below and charge it up. Takes a WHILE to even drop the pack that much. I do want to measure the voltage of my pack to see how accurate the voltage monitor on the radio is though.

              
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  17. #17
    BYT Antagonizer Will10431's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Did you by chance get measurements of the battery?
    You think you know, but you have no idea.

  18. #18
    BYT Active Member crisrc's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    pretty nifty guys. oh the things they come up with on this site. i love it here.
    back in michigan i didn't realize how much i loved snow

  19. #19
    Team BYT crash dummy NickRummy's Avatar
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    Default Re: FlySky FS-GT3B modded for lipo use

    Quote Originally Posted by Will10431 View Post
    Did you by chance get measurements of the battery?
    I have it in my truck. I'll snag some measurements when I go out there on lunch.

              
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  20. #20

    Default Re: FlySky FS-GT3B modded for lipo use

    I did something similar. I found a 3S 1600 20C Lipo that is even smaller than that. I'll post pictures tonight. All I had to do was take the AA part out.

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