consew 226 sewing balance wheel+shaft pt 1

nice closeups of the problematic balance wheel bore and shaft on my 'new' consew 226. with some technical details, and discussion of -some- of the nuisances involved. at least SOME of the allenhead setscrews are missing, and center bore of balance wheel is "boogered up BIG time", what with stripped holes, burrs, odd-angle (and possibly bored oversize already) holes, and possibly other problems.

to add to this total mechanical glamour-fest of epic proportions, the shaft the balance wheel mounts ON is ain't all that great either". feast your eyes on closeups of it here

it'll be difficult to remake the handwheel, but I need to anyway, so I can make it's 'pulley' part bigger. thinking of using a timing belt there, actually (in addition to the countershaft I have planned). but the bore of the 'new' pulley is gonna be a 'massive sackbreaker' to reproduce, seeing as it's a VERY mild taper, and both the bore of the handwheel and the mildly tapered shaft part it bolts over are BOTH (more or less) destroyed. I also have no idea what the angle is in there, other than it's WAY less than a morse taper reamer...and, I'm guessing, no manufacturer will tell me, either.

my next best guess is it's the angle of a taper pin, or possibly a metric taper pin...but, jeeze, no way to find out which...and nothing smooth enough to measure...

Category:

Howto & Style

Tags:

• sewing
• machine
• repair
• reconfigure
• modify
• bore
• turn
• mill
• lathe
• metalworking
• ream
• taper
• industrial
• walking
• foot
• upholstery
• leather

[turtlemann14]

drill out the threads and put the rod all the way though and lock tight it in

[MechanicalFinger]

Dear Sir, My name Is Kenneth. I have been around Industrial sewing machines since I was 7 years old. I would like to answer your questions sincce own a fleet of Consews and Pfaffs. I also have a Machine shop in my garage. I have been repairing Industrial sewing machines since I was a teenager, that was some years ago now. I am now 40.

1. The groove in the shaft IS Factory. 2. The Flat in the shaft is a relief for a set screw.

3. I have never seen a tapered shaft on a Consew.