On 2018-11-11 13:05, jbeattie wrote:
On Sunday, November 11, 2018 at 8:09:53 AM UTC-8, Joerg wrote:
On 2018-11-10 17:06, jbeattie wrote:
On Saturday, November 10, 2018 at 3:09:36 PM UTC-8, Gregory
Sutter wrote:
On 2018-11-10, Joerg wrote:
Getting older, I'd like to increase the large cog to at least
40T from my current 32T. Of course, that will require me to
retire the trusty old Shimano 600 derailer. I don't want the
cassette to become ever wider and also need to maintain
7-speed spacing so I can use the more robust old-style 7.3mm
pin length chains such as KMC Z50 (can't find the Sachs
anymore). In the past I hacked cassettes, installed the cogs
I wanted and re-used the old spacers. Can the larger
cassettes like in the link below still be hacked apart? I
don't mind drilling or dremeling stuff to get them apart. If
memory serves me correctly I've installed a Shimano STX-RC
freehub on the road bike after the last UG freehub had
croaked.
https://www.ebay.com/itm/SunRace-CSM...k/132325285327
This post makes me question a lot of things, including your sense of
time invested vs getting what you want no matter how the
industry has stopped doing it that way. Moving past that,
though:
If you want to maintain 7sp spacing, then your hub has a 7sp
cassette body, probably HG with 31.9mm width. You should tell
us specifically what it is, though; widths vary, including the
also-7sp Shimano IG.
You've posted an 8sp cassette (36.5mm width). Photo #2 shows
the one silver and two black pins holding the cogs together.
You could think about using a drill press, I suppose, but
looking at photo #1 there looks like a color difference between
the smallest 3 cogs and the rest, which adds to my suspicion
that they're separate from the larger pinned set. If that's
so, then you can think about omitting cogs and spacers to fit
the smaller width of your cassette body.
For the derailer, if your 600 is a GS (aka mid cage) instead of
the short one, which I assume it is due to your current 32t
configuration, then you might try keeping it and adding a Wolf
Tooth Roadlink. Making your bike one more bit of a hack should
be considered a central part of this quest, and that fits the
bill while hopefully allowing you to keep using existing
equipment.
https://www.wolftoothcomponents.com/...ducts/roadlink
I think the pins could be removed with Joerg's patented nail and a
hammer, and the silver pin is a screw. It looks like the
Sunrace people are trying to accommodate the build-a-beater set.
If they aren't screws they have to be drilled out. With a nail or
a punch you'd bend cogs.
Not if they're just press fit pins, but who knows. You need to write
to the manufacturer.
IME they will not comment on unorthodox uses of their products. Even in
my job that's tedious, when I want to use an electronic integrated
circuit in an unusual way and seven-digit revenue is beckoning.
That Wolftooth is interesting and reminiscent of the new Shimano
derailleurs.
https://static.biketiresdirect.com/p...0/sh7rd1-1.jpg
Joerg needs a gravel bike, which he could get practically anywhere
for pretty cheap. Keep the economy strong! Use that giant Trump
tax savings!
Oh I would but then my wife would make me chuck the trusty old road
bike I had since 1982 and I can't bring myself to do that. Yet.
God knows why.
Maybe a bit of nostalgia but most of all I do not like to ditch stuff
that is still perfectly working. Just like a former colleague who used a
1954 Chevy pickup truck as his daily driver. On days when he didn't have
anything to pick up from Home Depot he often used their early 50's Chevy
Bel Air. Both surprisingly low maintenance.
Oh, did I mention that I still have a candy bar phone? For the
youngsters: These were pre-flip-phone. My big drill is much older than I
am and works just fine:
http://analogconsultants.com/ng/sed/olddrill.JPG
Yes, 11sp wears out more quickly, but it is smooth as butt-ah,
and he could get hydraulic discs for the super-duper scary road
descents, drunk drivers, mountain lions (I brake for mountain
lions), etc. Cameron Park demands discs!
No 11-speed, I want 7-speed robustness. As for discs, absolutely,
rim brakes are totally inferior to those. For a road/gravel bike
I'd accept non-hydraulic ones though. For the MTB it has to be
hydraulics.
I was getting dragged around today by a friend who was on 35mm
CX tires and a CX race bike. I was on a Synapse with 28mm
slicks. My friend loves his CX race bike with wide range 11sp.
It's like 16lbs. We hit some straight up gravel, and he rode away
on his little gears. https://tinyurl.com/y7le55hm (steeper than
it looks up that cut).
Out here that's considered a road. Don't need a gravel bike for
that. The bike path to Camino is like that. I just don't ride it
with tires that are near end of life.
It's kind of a road here, too. My point is that low gears and fat
tires make for a more versatile bike -- and those are two things you
can't get on your current bike. You'll never be able to use a 30mm
tire, and you're looking at a lot of kludges to get the low gear you
want.
Correct. That's my only gripe with the frame of that old road bike. Even
28mm would be tight and requires the wheel to be 100% true which it
never really is. For some reason my friend's 1972 Peugeot PX-10 looks
like it could take a 32mm cyclocross tire.
And, not disc brake mounts.
BTW, the Zafiro you once dissed as short-lived surprised me. I've
got my last one on there right now and it's pushing past 1400mi
which is already 200mi beyond what cheap tires normally do in this
area. The square shape is quite extreme but no threads showing yet.
Wish those had TWI.
Hmmm. I'm not impressed with them, and their flat resistance is not
good. With that said, I still have a pair from last year that I will
put on soon -- 32mm for wet-leaf season commuting. I do like the
file-ish tread.
Mine are 25mm slicks. I've got a Mr.Tuffy liner in there plus thick
thorn-resistant tubes so I (hopefully) safely test the limits.
Cold but clear, and it warmed up a bit. Lots of scary cars on the
way home, but my disc brakes saved me. I would never ride a bike
without discs. I could die. Joerg is actually exposing himself
to great danger on that early '80s hose-clamp museum piece club
racer of his.
It's not really a club racer, this bike was completely custom
assembled for me and the frame ordered to spec after they measured
me like at a taylor. But it's old now. The hose clamp still
fulfills its job nicely. The steerer never shook loose again in
thousands of miles, including some dirt paths.
Neither does mine, and I commute on at least some dirt every work
day, including a 20% dirt climb made possible with some reasonably
low gears and fatter tires. I spin out on my regular road bike.
Ride area today:
https://d18d6vfm63ukth.cloudfront.ne...eyardsFall.jpg
More sun and spectacular fall colors. Riding the Emonda was like
being on an eBike compared to my commuter and even the Synapse.
Nothing like a nice light bike to go mano a mano with the other old
dudes.
Nice. I went through vineyards on Friday. Very large almost industrial
ones. Merlot almost as far as the eye can see.
https://goo.gl/maps/VqoZQGF19T42
However, getting into the Highway 50 corridor on the way back I started
coughing badly because of the Camp Fire smoke. Today it got so bad that
I couldn't ride at all and same tomorrow. On the news they said that a
couple hours of exercise would be the equivalent of smoking half a pack
of cigarettes. Probably worse because the smoke contains fumes for over
6000 burnt residence, whatever was in them. Very weird smell.
... I specifically dis-invited my son so the curmudgeons could
convince themselves they were still fast.
This is why I don't ride with the owner of a client business. He puts
the hammer down and keeps it at 25mph, something I just can't do for
more than 20mins and even then my tongue is on the handlebar. An
embarrassing fact is that he is two years older.
--
Regards, Joerg
http://www.analogconsultants.com/