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13th April 2014, 06:28 PM #1New Member
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- Nov 2013
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- Byron Bay
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- 5
Restored an old hand-cranked grinder?
Hi All,
This is my first post in these forums, so please let me know if you think there is a better category under which to post. cheers!
Wondering if anyone out there has experience restoring old hand-cranked grinders. I bought an old greasy, rusty NIP the other day and while dismantling it, found what appears to be a pin inside where the bull gear and shaft meet. It's a pretty messy setup, the pin seems half broken and there's a groove in the shaft which doesn't seem very symmetrical at all. Does anyone know what this is? Seems like it may be a kind of wedge perhaps but I have no experience with gears so can't be sure.
Would really appreciate any advice on what this is, and if its important.
Thanks everyone!
Chris
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13th April 2014, 07:32 PM #2
Hi Chris
Welcome aboard
Pics would really help a lot to understand what your talking about
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16th April 2014, 09:07 PM #3New Member
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- Nov 2013
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- Byron Bay
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Thanks Simplicity, and good idea. Do these make clearer what I'm talking about? Hope the photo is big enough to see properly... Cheers, Chris
20140416_194846.jpg
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18th April 2014, 07:54 PM #4
To me it looks like the gear is meant to be fitted with a wood truf key (my spelling is crap lol)
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18th April 2014, 11:16 PM #5Senior Member
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- Feb 2013
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- Glen Innes
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- 127
Looks like the keyway (the slot in the shaft ) is worn out which has allowed the key to wear permitting the gear to loosen on the shaft. If that has occured it might be difficult to get the gear tight on the shaft.
cheers pat
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22nd April 2014, 05:57 PM #6New Member
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- Nov 2013
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- Byron Bay
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- 5
Hi Simplicity, I wasn't able to find anything on the internet that I think matches a 'wood truf key'. Care to try the spelling again?! Or can you describe to me what it is? Something I use to put thing together or something that should actually be in the joint? Cheers, Chris
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22nd April 2014, 06:01 PM #7New Member
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- Nov 2013
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- Byron Bay
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- 5
Thanks for the response 1thumb. So I was right in assuming it to be some kind of wedging joint was I? When I was taking it apart it all seemed pretty tight. I just took to it with a hammer to bang the shaft through so I hope I didn't cause any damage... Figure I'll just bang away at it in reverse to try and reset it again unless you have a better idea??
Thanks again, Chris
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22nd April 2014, 08:34 PM #8Senior Member
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- Feb 2013
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- Glen Innes
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- 127
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6th June 2014, 07:32 PM #9New Member
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- Nov 2013
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- Byron Bay
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Update
Thanks 1Thumb and Simplicity, and apologies for long delay, took a while to get round to tying up loose ends with this grinder. Got it all put back together again and it seems to be working alright. Hopefully it'll last, as it did seem a bit messy getting the bits described back together again. Heres a photo of the finished product all nicely restored, albeit with the old wheel badly in need of replacing. Thanks again for your advice, Chris20140606_180539.jpg
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7th June 2014, 03:09 PM #10
Look fantastic
Can't wait to see the review once you get a new wheel going on it
Well done
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7th June 2014, 07:18 PM #11Senior Member
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- Feb 2013
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- Glen Innes
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- 127
Wow, that looks great good one
cheers pat
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11th June 2014, 11:30 PM #12Member
- Join Date
- Aug 2008
- Location
- Warren NSW
- Posts
- 71
Looks like new Chris Good job.
If that gear/shaft joint gives any trouble coming loose some of the loctite products available at auto parts shops will fix it.
I think "new metal" or "242 stud lock" would do the job and the left over would be suitable for future restorations.
cheers
Peter