Looking for a LONG shaft movement

Posted: Fri Jan 11, 2008 5:24 am     Post subject: Looking for a LONG shaft movement

I am wondering if there is a clock movement made that would have a material thickness of 2-1/4"...is there such an animal?? Thanks for any info!!

Posted: Fri Jan 11, 2008 2:43 pm     Post subject:

I have not seen any sort of movement to that nature. Generally, I have not seen a clock shaft exceed a length of about 1-1/4" overall. In most instances (with thicker stock), it is best to counter-bore (or machine a relief) that the movement can slip into. This will help to reduce the required thickness (if the object can be counter-bored/relieved).

Posted: Sat Jan 12, 2008 2:22 am     Post subject:

Yeah, that is about all I am finding. Have to do some thinking on it. Problem is that I can't counterbore...once I figure it out, I'll send pictures. Thanks!

Posted: Thu May 21, 2009 11:37 pm     Post subject: Long Shaft


Chris or scrollsaw,

Did you find a 2 1/2" long shaft battery movement? I have the same need. I'm working with a cypress slab which I don't want to disturb the back of.

Thanks,
gbsbyron

Posted: Fri May 22, 2009 6:15 pm     Post subject:

They simply do not make a clock movement with that long a shaft. you are going to have to counterbore a hole to fit the movement. Not sure why you do not want to drill a hole.

Posted: Fri May 22, 2009 9:59 pm     Post subject: Long Shaft

Thanks for your response. The reason I was hoping to find a long shaft is that my cypress slab is 2 1/4" thick and fairly fragile. I'm going to back it with 1/2" plywood to hold it together, which adds just that much more. It's not just boring a hole - you have to completely notch out the entire shape of the plastic case housing the battery clock works; and the only way I can think of to do that without risking the entire slab is to create a jig for use with my router and cut it out that way. It's just alot of extra work, which could be avoided if somebody made an extensible shaft.

Thanks,
gbsbyron

Posted: Fri May 22, 2009 11:55 pm     Post subject:

Yes the router is the tool for the job. The longest shaft I have seen is an electric movement with a 1 3/8" shaft, but then you have to make the hands.

Even if you find a battery movement with a long shaft, you need to build a box to house the movement, and hang it from.