Arcol blog Just another RepRap weblog

19Jan/10Off

Mendel build progress — day 8

I designed a new drive-pulley. What was wrong with the old one?

It would require to file the motor shaft.
I didn't feel like destroying these motor shafts. They are simply to beautiful...
So I decided to adapt the RP drive-pulley and it turned out easier too.

So after some iteration (the inner hole was smaller by some tenth of milimeters,
dunno if it is because of some skeinforge settings), here it is:

And also fitted to the motors:

Comments (7) Trackbacks (0)
  1. And does it work with the belt? — I am very curious because I already printed that motor shaft as a test and I were afraid that is simple do not work with the belt…

    Could you please put more pictures of the pulley, motor and belt, and say if it works, your opinion… ?

    Thanks.

  2. casainho: you need to wait until the next episode (hopefully tomorrow), to see with your eyes;-)))
    I will post some extensive texts. Im not 100 percent fine with this solution either…

    Im really sorry, but I have forgotten to put he .stl online. Gimme a sec, and I’ll do it.

  3. Ah, I see now the differences between the original and the one you did prefer.

    Your pictures are very important to understand the problem – good!

    Why don’t you put the “RepRap aggregation pipe of blogs” on a side bar of this blog? — it’s a feed, where I also got your new blog posts :-)

  4. Looking good.. I changed my pulleys also, for the same reasons, although I’m not real happy with how they’re working. I think I’ll just end up buying some for the best results. (The Z axis pulleys seem to work great, through)

    Thanks for posting the stl, I’ll give it a shot on mine.

  5. fynflood:
    Yeah, the z-axis pulleys works surprisingly nice.

    I would prefer some high quality aluminium driven pulleys, but we need some serious redesign of the Mendel parts, because, some pulleys are working because they are longer then the motor shaft. So you cant simply change it to a stock one.

    Watch out, Im preparing some nice blog posts, like “What I would like to change in the Mendel design”. And this point is one of them.

    casainho:
    > Ah, I see now the differences between the original and the one you did
    > prefer.

    > Your pictures are very important to understand the problem – good!
    As my english skills is limited, I need to compensate with as many pictures as possible;-)

    > Why don’t you put the “RepRap aggregation pipe of blogs” on a side
    > bar of this blog? — it’s a feed, where I also got your new blog posts :-)

    I have set up http://planet.arcol.hu, if you prefer some true planet aggregations.
    The pipes are on the main reprap.org site, I dont think my blog really counts in the pageviews. But I can put there, dont do any harms.

    LAszlo

  6. Put your files on Thingiverse, please. It would help others reach the files, and help RepRap Mendel in the end :-)

  7. Thank you

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