1. 5 months ago

    jack202020

    Jul 5 Syracuse, Indiana 574D

    Assuming it’s the same material and I chamfer the ends, is this vex identical?

    https://www.mcmaster.com/#98510A100

    Thanks,
    Jack

    I've tried a whole bunch of key stock. None of it will fit properly into the square holes or spin well in bearings. This is something where you do need the exact VEX part.

  2. Doug Moyers

    Jul 5 Austin, TX 8756 - Mentor

    Vex shafts have a radius on their sectional corners, these have sharp corners and thus to not match.

  3. lacsap

    Jul 5 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    Nor do we know if the metal composition is the same as VEX - so not identical.

  4. MannanG

    Jul 5 Collierville, TN 3631X

    @jack202020 Assuming it’s the same material and I chamfer the ends, is this vex identical?

    https://www.mcmaster.com/#98510A100

    Thanks,
    Jack

    If you are sure it is the same material as the vex axles and you round the edges to serve the same purpose as you would with a regular vex branded axle, it is vex identical.

  5. Deleted 5 months ago by The_One_and_Only_Sal
  6. lacsap

    Jul 5 Event Partner, V5 Beta Tester Massachusetts 9791[a-z]

    @MannanG If you are sure it is the same material as the vex axles and you round the edges to serve the same purpose as you would with a regular vex branded axle, it is vex identical.

    Given that VEX does NOT specify the material composition of their shafts, I would have to say blanket NO to replacement shafts.

  7. Gear Geeks

    Jul 5 Event Partner, V5 Beta Tester Virginia, USA 8044

    @The_One_and_Only_Sal What you should be wondering is which inspector has ever checked your axles? :P

    -Sal

    I wouldn't neccesarily agree. That seems to imply that it is OK to cheat if you're not going to get caught. Having extra strong axles could provide a huge competitive advantage - so I think it really does matter.

  8. Kevin Boenisch

    Jul 5 Answer Oakville, Ontario, Canada WPI, Former 2188A

    I've tried a whole bunch of key stock. None of it will fit properly into the square holes or spin well in bearings. This is something where you do need the exact VEX part.

  9. jack202020

    Jul 5 Syracuse, Indiana 574D

    @The_One_and_Only_Sal

    If I was going to break the rules I wouldn’t ask if it was legal. I’m not going to break the rules regardless of if an inspector will check it...

    VEX shafts are zinc plated steel, but the question is what grade. It wouldn’t be practical for me to do this much work on chamfering the edges and end for normal shaft use, I just like McMaster-Carr for one day shipping, and I do was in a bind I want to be able to get a shaft quick. I’d probably end up replacing it awhen I get it from vex anyway.

  10. The_One_and_Only_Sal

    Jul 5 Suspended Washington URDON3

    @Gear Geeks I wouldn't neccesarily agree. That seems to imply that it is OK to cheat if you're not going to get caught. Having extra strong axles could provide a huge competitive advantage - so I think it really does matter.

    @jack202020 @The_One_and_Only_Sal

    If I was going to break the rules I wouldn’t ask if it was legal. I’m not going to break the rules regardless of if an inspector will check it...

    VEX shafts are zinc plated steel, but the question is what grade. It wouldn’t be practical for me to do this much work on chamfering the edges and end for normal shaft use, I just like McMaster-Carr for one day shipping, and I do was in a bind I want to be able to get a shaft quick. I’d probably end up replacing it awhen I get it from vex anyway.

    I apologize. I was working under the assumption you were using the same material. I was thinking that it would not hurt to use a same-material axle even with sharper edges because the difference would be minimal. I was in no way implying you were cheating or had the intention of cheating. I was not suggesting you or anyone should cheat. I was not suggesting inspectors are lazy either. I understand the rules have to be followed regardless of whether they are checked or not. Again, sorry for my comment; I have deleted it.

    :D :D :D

    -Sal

  11. callen

    Jul 6 Braintree, MA, USA

    You're allowed to cut VEX shafts, including the 12" shafts. So if it's shorter than about 11.75", the shaped ends are irrelevant. However, the material is still relevant, so all the posts about not knowing the material and this being an issue are spot on.

  12. Please be warned about product tolerances. Even if you manage to prove that this product is competition legal, it may not interface with other vex products as you would like it to. My team has seen them get stuck in motors, bearings or metal gear inserts. I highly recommend taking the advice from @Kevin Boenisch

  13. callen

    Jul 6 Braintree, MA, USA

    Interestingly, VEX does list the material for high-strength shafts. However, what @Kevin Boenisch and @_Colossus_ have said should probably take priority:

    @_Colossus_ Please be warned about product tolerances. Even if you manage to prove that this product is competition legal, it may not interface with other vex products as you would like it to. My team has seen them get stuck in motors, bearings or metal gear inserts. I highly recommend taking the advice from @Kevin Boenisch

    That's good advice from both of you. Even the VEX shafts can be problematic with their own parts. We've had a lot of trouble with the shafts in combination with the metal lock bars and the metal (square) inserts for high-strength holes. I wouldn't want to have even more trouble with things fitting well.

 

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