Very Nice Tim! If you want to use your double locking colar on this. I belive that it should be as easy as turning the alum. down to the correct size and moveing the set screw up a little.
Keep up the Good work. and Thank you. C.A.G. ----- Original Message ----- From: Tim Krause <[email protected]> To: [email protected] Sent: Mon, 07 Mar 2011 23:48:02 -0500 (EST) Subject: New Spur Drive Hello All, At a recent woodturning club meeting Eric Lofstrom introduced the members to a face plate that had four socket head cap screws that where ground to a point held in with some nyloc nuts. He used it to hold a bowl blank. I thought that would be a clever way to mount stuff on the legacy, but then I got to thinking something like that could also be used to mark the four holes on the end of my wood stock for mounting the drive hubs. Then I figured it would be nice to be able to rough my stock on my lathe and then be able to prepare the work for further ornamentation on my Legacy equipment. Here's what I came up with that resolves all of the issues. In the picture above, you can see the aluminum hub that I made. It's basically 1-1/2" diameter. It uses 4 - 10-32 set screws that have been ground to points. They are on the same 1" circle pattern that the legacy's hubs use. They are threaded into the body of the hub. The nyloc nuts allow me to adjust the height of the points so they are all at the same level. The point is ground on the set screws by holding them in a drill while holding them against my grinder wheel with both of them running. It makes quick concentric points. The 5/8" center bore is actually designed to mount on my model 200. A Beall 2MT to 5/8" adapter is used to mount the new drive system into my lathe. A 1/4-20 set screw holds the hub onto the MT adapter. I scribed 4 lines into the side of the hub to be able to easily align my cross lines on my stock. To mount the stock, I simply hold the stock up to the pins, align the cross lines and tighten the tailstock. Once I remove the stock from the lathe, the pins leave four holes marks and this makes it easy to locate the legacy hubs on the end of the wood. I can also use the drive by mounting it on my Model 200 and simply not use the stock Legacy drive hub. It provides a very solid mount for the stock. My drive shaft is modified with a flat spot so the set screw seats firmly and prevents any rotation of the hub. This eliminates the play that I have seen on occasion if my ends are not exactly perpendicular to the axis and I'm using the stock hubs and drive. Using the Beall adapter I can mount the hub into my model 900 as well. I would feel better if I could use the double locking collar to hold the hub from turning but I did not consider the possibility until after I machined the part. This is not a new idea, our founder Art Ransom made a spur drive version a long time ago and posted it on his web site. htttp://ornamentalmills.com/turningaround/SpurDrive.htm Recently Brian McEvoy started offering the Elio Drive and I'm also aware of another version being sold by Lignotec . None of them are as small as the one I made. I have also seen the same concept in a wood turning methods book written in 1837 so I can honestly say there is nothing new under the sun. :-) I honestly don't know how much I will use this new hub but I think it's moving forward in mounting options for legacy's equipment. Let me know what you think. -Tim PS, As I type this, I just thought of a bolt on adapter that could be installed on the Legacy drive hub. It would use the same pin idea. Maybe I'll make one of those to show you what I mean. -- You received this message because you are subscribed to the Google Groups "Legacy Ornamental Mills" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/legacy-ornamental-mills?hl=en. -- You received this message because you are subscribed to the Google Groups "Legacy Ornamental Mills" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/legacy-ornamental-mills?hl=en.
