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Looking for a part

Discussion in 'Chassis & Drivetrain' started by Codered3232, Aug 29, 2017.

  1. Codered3232

    Codered3232 Member

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    I'm in the process of converting a savage X to brushless. I ran into a snag on the gear box. To make it a single speed I need a HPI 100905. If anyone can help please let me know.
    Thanks 20170822_200615.jpg Screenshot_20170829-212101.png
     
  2. orzowei69

    orzowei69 Member

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  3. orzowei69

    orzowei69 Member

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    Hi. I am in the same situation. HPI 100905 seems not to be available yet. The shaft only is not available either. I transformed the 2 speed internal gear to single speed (by taking out the plastic gear) and locked the other to enable reverse operation. Unfortunately I didn't take photographs of the process.
    I have another one to modify in the same way. When I have the time to do it I will make a video of how it is done.
     
  4. Codered3232

    Codered3232 Member

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    Thanks for the reply, let me know if you post a video. With HPI who knows when they will make that part again
     
  5. Codered3232

    Codered3232 Member

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    I found another option for converting a tranny to single speed. I found one on a stormer hobbies .com
     

    Attached Files:

  6. orzowei69

    orzowei69 Member

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    Thats a good solution.
    This is my economic solution. Only a M4 grub screw and epoxi glue are required:
     

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  7. orzowei69

    orzowei69 Member

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    Thats a good solution. You will just have to use a smaller pinion because of the higher internal gear ratio.

    If you want to keep the original gear ratio,
    I finally converted another gearbox and made a video of it:


    It is working fine with a 2250KV motor on 6S.
     
  8. Codered3232

    Codered3232 Member

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    Upon farther review, that 102244 is to wide to fit. Not sure how it's a replacement for the 100905 when it's so much wider. So keep lookin for the HPI 100905. Good luck. I got lucky and found one at a hobby town USA in
     

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