consew 226 sewing balance wheel+shaft pt 2

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

[hardwares1]

the inner diameter on the machine side of the handwheel is too deep for me to reach in with my dial caliper. the bore in the balance wheel is -also- "disturbingly ugly" end to end, what with having radial and *also* concentric burrs, and 'mounted up metal' in other places. the end of the machine shaft itself is in a similar state....still think it's most likely a 'portion of' a metric taper pin taper...'scarcer than hen's teeth'. setscrews have threads 'from another galaxy' on em

thanks :-)

[hardwares1]

@hardwares1

edit: 'mounted up metal' was supposed to read "mounded-up metal"

thanks :-)

[MechanicalFinger]

Kenneth here, it is more likely that, An Idiot ran the machine with a loose set screw.

thereby damaging the shaft on the head. I'd clean up the shaft as best possible with a file and emery cloth and install a sleeve with sleeve retainning compound. then machine a new flywheel to accomidate the new wheel. This repair has worked on shafts for me before. Thanks for the Video. please check out my air motor video under Mechanicalfinger. Have a nice day, Kenneth.

[percymain2]

cant you just measure the inner diameter of each hole and calculate the taper accordingly - or the shaft itself?