Path: not-for-mail
From: Ted Heise <theise@panix.com>
Newsgroups: rec.bicycles.tech
Subject: Re: Patching TPU innertube
Date: Wed, 22 Jan 2025 14:49:59 -0000 (UTC)
Organization: My own, such as it is
Message-Id: <slrnvp21cn.8d3.theise@panix2.panix.com>
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On Tue, 21 Jan 2025 22:23:27 -0500,
  Joy Beeson <jbeeson@invalid.net.invalid> wrote:
>  On Sat, 18 Jan 2025 22:37:20 -0500, Joy Beeson
> <jbeeson@invalid.net.invalid> wrote:
> 
> > The forecast is for very cold and dangerously windy.  We had 
> > the January Thaw today, so there may be puddles of ice when I 
> > walk tomorrow.
> 
>  There was.  I let Lou Cook drive me home -- the streets were 
>  clean, but our driveway was (and still is) glare ice.  I may 
>  have trouble fending her off next Sunday; most people are 
>  aghast at the thought of walking more than a few feet, and I 
>  really *need* that walk now that it's hard to get time to ride 
>  a bike.

I can relate. We're not all that far from you, so have very 
similar weather.  And the physical activity seems increasingly 
necessary as I age (in my last 60s year now).

I don't go out on the bike when it's below 30 F, or if there is 
chance of icy patches.  Instead I ride a set of Kreittler rollers 
in my garage (which has itself been damn could with the recent sub 
zero outdoor temps).

Speaking of the rollers, I wanted some resistance when I got 
them (25 years ago?) but wasn't that interested in the fan options 
offered by Kreitler,  So I cobbled the mag resistance unit of my 
previous junky set of rollers onto the new ones.

Part of the flange on one side of the pulley on that unit has 
broken off.  I glued it together, but it broke of again.  This 
time I found a washer about the size of the outer side of the 
flange, and glued it against the side of the pulley with JB Weld.

Seems likely to be pretty durable, but I've been trying (with no 
luck) to get a replacment from McMaster-Carr as a backup.  It 
seems the shaft is a hair over 3/8" so the pulleys with 3/8" bore 
won't slide onto the shaft.  I tried drilling out the bore hole, 
but don't have a drill press so the wider bore wasn't perfectly 
straight (seems the pulley wobbles a bit when turning).

Is there such a thing as 1 cm bore pulleys?  I'm not finding 
anything that's clearly along those lines.

The next largest U.S. spec pulley is a 1/2" bore, which would be 
too big.  I suppose I could look for tubing that would fill the 
gap between the shaft and a 1/2" bore pulley, but that seems like 
a long shot (and maybe hard to track down).

Any other ideas from the brain trust?


>  And typing with the key board on a table is a royal pain, even 
>  with Dave's chair on its highest setting and two pillows on it.
> 
>  Which is happening because I've got Agent on the new computer 
>  and it worked right off!  Had a terrible time copying it to the 
>  Sneakernet drive -- Sneakernet had to be scanned and formatted, 
>  and Explorer is really, really rotten at that sort of thing.
> 
>  But I hope to shut off Vista tomorrow, and move this computer 
>  onto my own desk.  First I have to download my three Web sites 
>  and my LETTERS folder.

Good luck, hope it goes well, Joy!

-- 
Ted Heise      <theise@panix.com>       West Lafayette, IN, USA