Thread: Restored an old hand-cranked grinder?

Hi Chris
Welcome aboard
Pics would really help a lot to understand what your talking about

Originally Posted by Simplicity

Hi Chris
Welcome aboard
Pics would really help a lot to understand what your talking about

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

To me it looks like the gear is meant to be fitted with a wood truf key (my spelling is crap lol)

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.

Originally Posted by Simplicity

To me it looks like the gear is meant to be fitted with a wood truf key (my spelling is crap lol)

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

Originally Posted by 1thumb

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.

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

Originally Posted by Kigadaisuki

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

Yeah put it back together with a new key and see how it looks. A "woodruff" key has a rounded bottom(think semi-circle) or if its just a flat groove use a normal square key of the correct dimension

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

Look fantastic
Can't wait to see the review once you get a new wheel going on it
Well done

Wow, that looks great good one

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