Additional to yesterday’s publish, right here’s what’s happening with that cassette:
To evaluation, it’s a 7-speed hub, and an 8-speed Hyperglide cassette, but it lacks a lockring.
As a few of you identified, there was a short time the place Shimano hubs had each the outer threads portion for Uniglide and the inside threads for Hyperglide, like these bizarre prehistoric fish that would breathe out of the water:
[Via Sheldon Brown, where else?]
So it will be tempting to suppose that the cassette is solely held on with a Uniglide small cog, and at first that’s the place my thoughts went too. However if you happen to’re conversant in Uniglide you realize that’s not what it appears like. The small cog is flat and you may form of see the splines beneath it:
[Via here.]
That is the place I received caught. So I requested Paul of Traditional Cycle what was happening, and right here’s the reply:
That’s some element chicanery from the ’80’s.
So it’s a Shimano 7-speed cassette hub with most of a later era XT 8-speed cassette on there. The 8-speed cassette would naturally take up an excessive amount of area, so rather than the final cog and the lockring you’ve the final two cogs from a Suntour winner Professional cassette (or freewheel, I don’t bear in mind which) threaded onto the tip of the Shimano freehub physique holding all the things in place!
Right here’s a Suntour Winner Professional freewheel:
[Via eBay, the world’s greatest photo repository for vintage cycling components]
And right here’s how the cogs affix to the freewheel, through (the place else?) Sheldon Brown:
I can’t loosen up on a bicycle if I don’t understand how all the things works, and the suspension elements on the AMP have been already inflicting me sufficient anxiousness, so not realizing how the cassette was arrange on high of all that was maintaining me up at night time. So now that I perceive it I can lastly sleep once more. The Suntour thumbies shifting a Shimano derailleur throughout a hybrid Solar-mano cassette additionally additional endears me to the bike.
Transferring on, do you know that in Japan forcing somebody to trip a bicycle is a violation of their human rights?
Simply ask the “Unnamed Postman,” who dropped his bike and was pressured to finish his rounds on a bicycle in oppressive August warmth:
In an interview with nationwide broadcaster NHK, the unnamed postman recounted how his work bike had fallen over whereas parked in August, inflicting minor injury to Japan Submit property. Following the incident, his supervisor ordered him to finish the identical supply route on a bicycle.
Right here’s a photograph of a Japanese postal employee delivering mail by bicycle, which is hard to consider as a human rights violation because it appears just like the kind of factor you’d be prone to discover if you happen to have been scrolling by means of the Rivendell Instagram:
I need to say I’m doubly disillusioned. Not solely is my favourite spare time activity thought-about so terrible that it’s a human rights violation proper up there with intercourse trafficking and torture, however like everybody else I realized all the things I find out about Japanese tradition from watching Nineteen Eighties movies like “Gung Ho,” so to be taught that self-flagellation, collective shaming, and ritual abuse are not acceptable there has utterly undermined my whole worldview.
Subsequent you’ll inform me the phrase “Gung Ho” isn’t even Japanese!
Lastly, talking of being mushy, winter bikes are not a factor as a result of no one rides bikes in winter anymore:
Principally, the individuals who say you want disc brakes in your street bike due to the superior foul-weather efficiency are the exact same ones who retreat to the coach on the first signal of any type of precipitation:
Maybe the principle motive folks not personal winter bikes is solely that they don’t want them anymore. The recognition of Zwift and different indoor coaching platforms, mixed with the decreasing value of sensible trainers, implies that an increasing number of folks merely trip of their properties, in a digital world as an alternative, and in all probability get fitter and run a decrease threat of crashing and common distress consequently.
It is a disgrace, as a result of you may get an previous street bike for in regards to the value of a crabon handlebar and trip all of it winter lengthy. Take into account this Trek, for instance, which got here inventory with Biopace Wheel Expertise:™
I actually thought somebody had slipped me a hallucinogen and it had began to kick in after I walked by that one.