Solarbird 
hey, there’s a bike chain under all that rust!
(continued from: https://mastodon.murkworks.net/@moira/115069944638186131 )
i’ve put it in denatured alcohol for degreasing and actual cleaning. not sure how long tho’? it’s a lot cleaner already, rust aside.
WHAT’VE WE LEARNED TODAY SOLARBIRD?
don’t put your glass full of evaporust and metal into the ultrasonic
technically learned this yesterday BUT it’s important
LIKE THE XENOMORPH HAS A SECOND SET OF TEETH
THIS THING HAS A SECOND SET OF SPLINES
AND THESE ACT LIKE A FREEWHEEL
holy shit
i also figured out how to get the axle out after only incurring minor and inconsequential damage
however, that just kind of leaves you with a bunch of free bearings and some of them want to go on walkabout so i had to put it back
on the good side the bearings actually look okay? and once i disassembled it as much as i did it suddenly felt better so the bad bearings part is at least _partially_ external components i can try to fix
Paul Southworth@moira Yes this uses a standard Shimano Uniglide freewheel tool. It's the most common type. Individual cog replacement is long out of style. Years ago shops would have cog boards with various size replacements, but it all became much more complicated when cogs with shifting ramps were introduced with the Hyperglide cog format. The price you found for the tool is good.