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FMA Floating Gearbox System?

Discussion in 'FMA' started by Shindouz, Sep 23, 2018.

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  1. Shindouz

    Shindouz Spacer

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    Anyone has anything to share about this? I'd like a smoother transmission for my fma
     
  2. tigerwolf

    tigerwolf Box Kit

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    Hi i did a few modifications in my chassis.

    Here is the video:


    Theres still a lot to do though.
    Ill provide pics on what i did when i have the time.
     
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  3. Shindouz

    Shindouz Spacer

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    thanks for sharing though, is that small washers between the crown and spur gear? if so how many pieces?

    Also why didn't you trimmed the crown gear on the front and rear?
     
  4. Kaybo

    Kaybo Screw

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    i didn't do anything crazy to my transmission to get it nice and smooth and quiet

    all i did was add a plastic bushing to the 'spur gear' the top gear that the motor drives
    and i used a 1.5mm spacer in the rear gearbox between the crown hear and other gear

    other than that, just some real oil on the gears - the thing is fast for a 'box stock' car (all kit parts, no HG/custom/carbon/aluminum parts and the motor that comes in the kit) it actually got teched because it lapped a car, twice
     
  5. SignOfZeta

    SignOfZeta Spacer

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    The FMA has most of those old problems fixed. It’s way stronger and has a tighter transmission so there’s less work than say a Super II.

    I only have two FMAs and both are mostly stock but it’s amazing how quiet they are. That basically means they are fast.
     
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  6. Shindouz

    Shindouz Spacer

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    How does the plastic bushing looks like that u attached next to the counter gear?
     
  7. Shindouz

    Shindouz Spacer

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    I see. Yeah it is a really fast stock car but I wanna go beyond that of course. I'm also wondering if you have ideas for the Super FM transmission as well?
     
  8. Kaybo

    Kaybo Screw

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    it pushes into the space in the spur gear on the side that faces away from the motor. its one of the spacers from the MA gears i had extra since my MA uses bearings
     
  9. Shindouz

    Shindouz Spacer

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    okay can u like take a screenshot of it and item number?
     
  10. Kaybo

    Kaybo Screw

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    i'll get you it when i get home from work
     
  11. Shindouz

    Shindouz Spacer

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    but anyway i want to know what is the setting for this floating transmission in the video
     
  12. Kaybo

    Kaybo Screw

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    here are my pics. the spare parts are the wheel bushings - Tamiya give you 6 in the FM-A kit on the tree with the battery door and the gear covers, etc

    20181010_072454_edit.jpg 2016-03-06-20-16-21_edit.jpg
     
  13. Roscoe_tm10

    Roscoe_tm10 Spacer

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    You might wanna see this post on Instagram for your FMA transmission.

     
  14. Shindouz

    Shindouz Spacer

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    hey roscoe i dont get what he meant by cutting the scrape off as i dont see anything on my fma chasssis there and also i feel skeptical about using the shaved pinion gear to hold the crown gear as it move position after a couple of hits. Anymore more secure than that?
     
  15. yao wei

    yao wei Spacer

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    i think i saw in many vids they use tamiya tape
     
  16. Shindouz

    Shindouz Spacer

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    i see okay good idea
     
  17. yao wei

    yao wei Spacer

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    i just don't know if heating plastic parts are allowed in tamiya rules, but what i am thinking is if you have spare pinion gear, you shaved it, heat it a little to soften, squeeze it a little to tighten then let it cool. it this way you get a tighter locking for crown gear.
     
  18. Shindouz

    Shindouz Spacer

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    i see okay thanks for the idea.
     
  19. Drew

    Drew Carbon Fiber Dust

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    You shave it for both a) reducing weight and b) so it doesn't contact the gear box walls if it wobbles.
    As to using the pinion gear, you're meant to dab a touch of glue on the axle side to prevent it slipping back thus holding the gear in position correctly. Using tamiya tape has the same result but it's a little more difficult to get accurate as you have to wrap it around the axle in the correct position and make sure nothing is going to scrape it which will inadvertently pull up the tape.
     
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  20. Shindouz

    Shindouz Spacer

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    Actually i dont the instagram post from arii
    He is not using the super x propeller shaft and what is a black plastic washer does it have any other replacement because i dont have a ultra or HPD motor right now.
     

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