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Your crank looks completely different from the original drawings seen here https://books.google.com.au/books?id=otsDAAAAMBAJ&pg=PA1349&source=gbs_toc&cad=2#v=onepage&q&f=false page 787 onwards in PM Nov. 1936. Maybe someone was making their own version from several pieces instead of the...

There are similar add-ons for Firefox that fix the Photobucket rip-off too.

Looks like the dream workshop. Nice job! I can't tell if the floor is painted or bare concrete. If not painted, now is the time to do it, before the shop fills with too much stuff and before oil soaks into the concrete. I wish I had done this years ago when I set up my shop. It really does help...

Very nice indeed. You've done a good job to get it running with the extra friction of a second power cylinder. Neat. Are the polka dots on the cylinders a performance enhancing feature, or purely decorative?

On the other hand, larger radius can induce more chatter on smaller, less rigid lathes.

Depends largely on where you and the lathe live. Prices worldwide vary greatly, and even from region to region in the same country. There is a Super 7 on Ebay Australia right now for A$4,200 or best offer. I've seen others closer to the $3,000 mark.

So that's what happens to all those sets of change gears missing from secondhand lathes.

That's a good idea. It's the lateral alignment of the new threads relative to the old dovetails that is important too. I would do as you say, leave the new nut in one piece and split it after glueing to the bored out old nuts. To ensure both halves of the old nut are in the correct position...

Should do. Specially if you make the insert bobbin shaped with a small flange on each end for location. Epoxy or solder, you will need to make sure the threads in both top and bottom nut are perfectly aligned, so it would probably be easiest to use epoxy and set the half nuts in position in the...

I made a brass insert to go in my 8tpi halfnuts using a HSS bit in a boring bar. Ground the HSS bit to fit a standard acme gauge. Using an insert you just need to be aware the leading edge usually has more clearance than the trailing edge to allow for the helix of the thread. So a RH external...

On a side valve engine, if you go above about 6:1 compression the reduced area connecting the valve area to the cylinder bore area becomes so small it actually reduces performance. Same applies to a pocket valve or F-head design like the Webster. 4:1 is what those old pocket valve motorcycle...

Wow. Nice work indeed. And a bit of fun at the range too!

No need for setting the topslide at an angle. You can have five bob each way by leaving it in the standard position. When screwcutting, advance the topslide by half the amount the cross slide is wound in. EG, if taking a 10 thou deep cut on the cross slide, advance the topslide by 5 thou. This...

Condolences from here too. I lost my wife earlier this year, after caring for her through illness for four years. It's a tough haul. It does get better though. And shed therapy is among the best. Keep up the good work. As Robert M Pirsig said in the book "Zen and the Art of Motorcycle...

I'm with Herbie. LH Sparey's book "The Amateur's Lathe," is my favourite lathe book. Cheap too from Book Depository in the UK, free shipping worldwide. It's an oldie but the best I have come across for getting across the basics. And any of the Workshop Practice Series of books is good too. They...

I do that type of work, and charge $85 an hour. Starting at an estimate of 2,000 hours and upwards as GBritnell said above, you would be looking at $170,000 labor costs. Probably quite a bit more if you include sourcing either an engine or drawings and scaling it down etc and redrawing it. Is...

I've been lubing my lathe with whatever motorbike oil is lying about the shed for the past 50 years. So far so good...

First time I've seen a wiper on a leadscrew cover. Looks like just the ticket.

Yes, that's the ticket, exactly. I would not be without one.

Cleaning machine tools with compressed air will do that. That's why it's banned in industry, aside from the safety aspect to eyes etc. Something else that might help keep swarf at bay is attach a four or five inch wide flap of vinyl (offcut from upholsterer) to the leading edge of the saddle...