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Re: SPT Mounting Posts
Posted: Sun Nov 22, 2020 12:11 pm
by chapmanruss
David,
Thank you for the additional information on Jointer mounting posts. It would be helpful to know the year and/or serial number of your Jointer to fit this change into the timeline.
Anyone else having a SPT pre Shopsmith Inc. (1973) with eccentric posts information on your SPT would be helpful too.
Re: SPT Mounting Posts
Posted: Sun Nov 22, 2020 12:49 pm
by DLB
My Jointer SN is 52814. I'm not up on SPT dates. My Greenie is estimated early 1957.
- Jointer Plate.jpg (81.4 KiB) Viewed 765 times
- David
Re: SPT Mounting Posts
Posted: Mon Nov 23, 2020 12:44 pm
by chapmanruss
David,
Like the Mark 5/V production date by month chart, the Jointer chart is missing most of 1956 and 1957. Serial number 39063 was the starting number for February 1956 and the next listing is S/N 64426 for December 1957. Your Jointer was made in 1957. Thanks for the information on your Jointer.
Re: SPT Mounting Posts
Posted: Sun Dec 13, 2020 3:16 pm
by chapmanruss
In my first post I said,
To my knowledge the Jig Saw only had the straight mounting posts with the snap ring but could use the Strip Sander eccentric mounting posts. This may have changed before the Jig Saw went out of production.
I have done some more looking into this and the Jig Saw did indeed change to eccentric mounting posts prior to going out of production. I am looking to confirm the Jig Saw eccentric posts are the same as the Strip Sander's posts. Based on the overall length and the length to the snap ring of the straight Jig Saw posts and the offset of the eccentric Strip Sander posts I believe this is correct. The Strip Sander was introduced prior to the Jig Saw being discontinued. I will update this when I can confirm the posts being the same or different.
Re: SPT Mounting Posts
Posted: Mon Dec 21, 2020 7:23 pm
by chapmanruss
Well here is the update on the Jig Saw eccentric mounting posts. The Jig Saw did indeed come with eccentric mounting posts by July 1982 as shown in that Owners Manual and a Jig Saw made in May 1984 has them as original parts. The part number for the Jig Saw's eccentric mounting posts is 513776 the same as the Strip Sander's. For reference my Jig Saw made in May 1980 has the straight mounting tubes.
On the original post I did not have the length from the top of the post to the bottom of the collar for the original Compressor/Magna Sprayer. That measurement is 2-1/2" set up on my Mark 7.
The original post for this thread has been corrected with this information so statements in subsequent posts may not make sense until now.