Bevel gears

Discussion in 'General Engine Discussion' started by Ripper, Jul 15, 2018.

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  1. Jul 15, 2018 #1

    Ripper

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    Dear fellow scrou....... recyclers. What can be cannibalised to get a pair of right angle bevel gears for a steam engine ball governor? Need to be about 8 to 12 mm. major diameter. Your experienced advice appreciated.
     
  2. Jul 15, 2018 #2

    Cogsy

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    They might be a tad larger than that from memory, but I used a pair from a cheap (~$10) right-angle drive adapter for an electric drill, for the flyball governor on my Rupnow Hit and Miss. I guess you could turn the OD down a bit if you needed to...

    If you have the appropriately sized involute cutter they can be home made but I believe it's a bit trickier than normal gears to achieve.
     
  3. Jul 15, 2018 #3

    Ripper

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    Cogsy - Strangely just looking at an old Stanley R/A drive. A bit too large but may be OK if nothing else surfaces.
    Rod
     
  4. Jul 15, 2018 #4

    mcostello

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    Printers are a wealth of hard to find parts. And ideas of how to use them.
     
  5. Jul 15, 2018 #5

    Brian Rupnow

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    Go to the nearest RC model shop. they have many different kinds and sizes of metal bevel gears, dirt cheap.
     
  6. Jul 15, 2018 #6

    lohring

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  7. Jul 16, 2018 #7

    payner

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    In the model RC shop look for replacement gears for car differentials , the replacement kits usually have 1 or 2 larger gears and 2 smaller gears . You can get metal as well as nylon ( plastic ) sets .
    They come in sets for different scales so check them all out .
    Good luck
     
  8. Jul 16, 2018 #8

    Jasonb

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    I sent Ripper this link to a supplier yesterday when he asked on another site, at 7 Euro for a pair of suitable brass bevels it is hardly worth looking around for something you don't have to take them out of.

    https://ghw-modellbau.de/index.php?cPath=91_83_89_218

    Also very good for small hex metric fasteners.
     
  9. Jul 16, 2018 #9

    tjwal

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  10. Jul 17, 2018 #10

    10thumbs

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    Sewing machines and electric mixers might give you the size you need.
     
  11. Jul 17, 2018 #11

    lou

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    I found small bevel gears and was told they came from a cotton gin, and used them on my Cliff & Bunting 3'" traction engine I still have some laying about somewhere.
     
  12. Aug 11, 2018 #12

    bobs7-62steamair

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    Try Ebay as they have bags full of them. If you want small gears and are willing to pay for them try PM Research, believe they have a local supplier in the UK now.
     
  13. Aug 11, 2018 #13

    DougB

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  14. Aug 12, 2018 #14

    Donrecardo

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  15. Aug 13, 2018 #15

    editor123

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    Cheap right angle grinders. Harbor Freight frequently has them for under $20.
     
  16. Aug 15, 2018 #16

    limeyguru

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    Have you considered skewed helical gears? You might be able to make them easier than bevel gears. One option is to 3D print them - I've done that & they worked remarkably well. Check out otvinta's web site : http://www.otvinta.com/
     
  17. Aug 15, 2018 #17

    limeyguru

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    This was my first attempt at 3D printing gears:

     
  18. Aug 16, 2018 #18

    kkuppin

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  19. Aug 16, 2018 #19

    kkuppin

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    You might try an old Singer sewing machine with a rotary hook. The have bevel gears about the size you are looking for.
    Kris Kuppin
     
  20. Aug 16, 2018 #20

    Ripper

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    Thank you everyone. Found some!
     

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