Wesley, Yes, Tube will be rolled in. Purchased a tube expander from Wicksteed in the UK as they were the only ones that offer an expander for 1/2" tubes and not too long to fit into the 4" mud drum. (Still may have to trim a mandrel to fit) Using John King's boiler as a guide but have changed from C...

Bart, Thanks Your a much more patient person than I. Can't imagine having a mill without a DRO. Since the tube is offset along the X and the end is beyond the slots of my table I needed to use the extension plate that you can see in the photo. To reduce the need to indicate for each row of holes I m...

Just a quick pic to get the board traffic up, it's been a bit quiet lately. Center drill, drill, ream, repeat 206 times. Each series of holes required moving to clear the end of the tube so as to be able to change between center drill & drill and also to change the drill chuck for collet & reamer. U...

If your not already a member of the SBA (Steamboat Association of Great Britain). I would suggest becoming a member for the purpose of being able to access the register. I find it very useful to be able to check design numbers against existing, operational steamboats. For example, John Winn's Chimer...

Looks like a grand time was had, Thanks for posting

Ken

In railroad terminology I believe that would be called a "lifting link" John York has the equivalent of that part named "drag link" on my prints. The slot was probably needed on the original installation to prevent binding due to a geometric constraint of some sort or possibly to make the throw of t...

The shim in place is definitely a bodge. The rod end is an odd shape but I think that's to allow for different placements of the bore to change rod length without needing different casting patterns. Pouring Babbitt is easy especially when you can entirely fill the cavity and bore the hole without th...

How 'bout a few beers?

Anything else you'd care to know about the mechanics of motion control? I'm very well versed on the subject, more than I care to be. :lol: Ron Seeing I've been very successful at designing CNC & high speed servo driven systems using motors the size of an AAA battery to 20hp, as well as worked as an...

Servos and Steppers aren't designed for side (overhung) load. Most general duty motors have surprisingly small overhung load capability. Yes, but loads are within the design parameters of the motors used. Over-tightening belts or overloading the screws will quickly kill motor bearings. The screws a...