31 May
2013
31 May
'13
6:38 a.m.
I seem to collect more bits of vintage hi-fi equipment than I do computers
these days (they're much easier to find around here)...
Anyway, I've got an early-'70s receiver with a built-in 8-track deck where
its drive belt has turned to black goo in the same way that QIC drive pinch
rollers often seem to do (and oh how that stuff gets everywhere). Exact
part replacements by manufacturer / model are unsurprisingly unavailable -
but I expect that the belt material is the same composition as that used
for e.g. floppy drive spindle belts (or at the very least, floppy drive
belt material would work nicely).
So... I could measure the pulley diameters and spacing, but does anyone
know of somewhere that sells such belts by length/width rather than "this
is a belt for xyz"? (and, if such a place even exists, do I need to correct
for belt stretch, or is that factored into the sizing already?)
cheers
Jules
31 May
31 May
6:52 a.m.
New subject: rubber drive belts
http://www.mcmelectronics.com/browse/Belts/0000000162
This is where I bought all the belts I used to buy for VCRs, stereo, 8-track
and cassette machines.
Cindy Croxton
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Jules Richardson
Sent: Friday, May 31, 2013 8:39 AM
To: 'General Discussion : On-Topic and Off-Topic Posts'
Subject: OT: rubber drive belts
I seem to collect more bits of vintage hi-fi equipment than I do computers
these days (they're much easier to find around here)...
Anyway, I've got an early-'70s receiver with a built-in 8-track deck where
its drive belt has turned to black goo in the same way that QIC drive pinch
rollers often seem to do (and oh how that stuff gets everywhere). Exact part
replacements by manufacturer / model are unsurprisingly unavailable - but I
expect that the belt material is the same composition as that used for e.g.
floppy drive spindle belts (or at the very least, floppy drive belt material
would work nicely).
So... I could measure the pulley diameters and spacing, but does anyone know
of somewhere that sells such belts by length/width rather than "this is a
belt for xyz"? (and, if such a place even exists, do I need to correct for
belt stretch, or is that factored into the sizing already?)
cheers
Jules
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8:29 a.m.
I get my belts at turntableneedles.com. They have a wide selection of belts and a good
cross reference.
Oh, and they carry turntable needles too.
Rich Cini
Sent from my iPhone
On May 31, 2013, at 9:38 AM, Jules Richardson <jules.richardson99 at gmail.com>
wrote:
I seem to collect more bits of vintage hi-fi equipment than I do computers these days
(they're much easier to find around here)...
Anyway, I've got an early-'70s receiver with a built-in 8-track deck where its
drive belt has turned to black goo in the same way that QIC drive pinch rollers often seem
to do (and oh how that stuff gets everywhere). Exact part replacements by manufacturer /
model are unsurprisingly unavailable - but I expect that the belt material is the same
composition as that used for e.g. floppy drive spindle belts (or at the very least, floppy
drive belt material would work nicely).
So... I could measure the pulley diameters and spacing, but does anyone know of somewhere
that sells such belts by length/width rather than "this is a belt for xyz"?
(and, if such a place even exists, do I need to correct for belt stretch, or is that
factored into the sizing already?)
cheers
Jules
9:43 a.m.
On Fri, 31 May 2013, Rich Cini wrote:
I get my belts at turntableneedles.com. They have a wide selection of belts and a good
cross reference.
Oh, and they carry turntable needles too.
Now if only they had the hard-find-spring i'm looking for. ;)
Rich Cini
Sent from my iPhone
On May 31, 2013, at 9:38 AM, Jules Richardson <jules.richardson99 at gmail.com>
wrote:
--
Cory Smelosky
http://gewt.net/ Personal stuff
http://gimme-sympathy.org Experiments
I seem to collect more bits of vintage hi-fi equipment than I do computers these days
(they're much easier to find around here)...
Anyway, I've got an early-'70s receiver with a built-in 8-track deck where its
drive belt has turned to black goo in the same way that QIC drive pinch rollers often seem
to do (and oh how that stuff gets everywhere). Exact part replacements by manufacturer /
model are unsurprisingly unavailable - but I expect that the belt material is the same
composition as that used for e.g. floppy drive spindle belts (or at the very least, floppy
drive belt material would work nicely).
So... I could measure the pulley diameters and spacing, but does anyone know of somewhere
that sells such belts by length/width rather than "this is a belt for xyz"?
(and, if such a place even exists, do I need to correct for belt stretch, or is that
factored into the sizing already?)
cheers
Jules
1 Jun
1 Jun
9:12 a.m.
On 05/31/2013 10:29 AM, Rich Cini wrote:
I get my belts at turntableneedles.com. They have a
wide selection of belts and a good cross reference.
Oh, and they carry turntable needles too.
:-) Thanks, they look useful. This is an old Admiral unit (good ol' 70's
styling, and dreadful internal build quality!) and things are hampered by
the fact that they seemed to re-use the model number for a later turntable,
making searches difficult.
Because the drive pulley is crowned I can't use their string method, but
I'll be able to get calipers on the pulleys and work out the belt length
using their diameters and distance between them.
cheers
J.
12:57 p.m.
Because the drive pulley is crowned I can't use
their string method, but
I'll be able to get calipers on the pulleys and work out the belt length
using their diameters and distance between them.
Reminds me of soemthing I wrote i nthe HPCC magazine when I described how
to repair the HP9810/HP9820 internal card reader. The belt on that is a
simpe O-rign running on grooved pulleys
Toe find the size of the O-ring, I said that a practical person would run
a bit of string round the pulleys, mark it and measure it. A calculator
hacker would measure the diameter of the pulleys and the spacing between
the spinles and use the belt length program in the HP67 or HP41
Mechancial Engnieering Pac. As I then went on to say, I am both, so I
did both. Fortuantely the answeres agreed to within the accuracy of the
measurements. Even more fortuately that size of O-ring works in the reader.
-tony
5:35 p.m.
If you're looking for small quantities of replacement belts, check out
the eBay seller "isellprojectorbelts". He's got quite an inventory.
If it's a "price is no object" affair, try
http://www.bpbincorporated.com/about.htm
Their minimum order is about $125, but they can make belts to order.
--Chuck
31 May
31 May
3:48 p.m.
On Fri, 31 May 2013, Jules Richardson wrote:
I seem to collect more bits of vintage hi-fi equipment than I do computers
these days (they're much easier to find around here)...
Anyway, I've got an early-'70s receiver with a built-in 8-track deck where
its drive belt has turned to black goo in the same way that QIC drive pinch
rollers often seem to do (and oh how that stuff gets everywhere). Exact part
replacements by manufacturer / model are unsurprisingly unavailable - but I
expect that the belt material is the same composition as that used for e.g.
floppy drive spindle belts (or at the very least, floppy drive belt material
would work nicely).
So... I could measure the pulley diameters and spacing, but does anyone know
of somewhere that sells such belts by length/width rather than "this is a
belt for xyz"? (and, if such a place even exists, do I need to correct for
belt stretch, or is that factored into the sizing already?)
Back in my stereo repair days, these guys were the gold standard:
http://russellind.com/prbline/prblinecom_.htm
Last I looked there was information on how to measure and order.
Steve
--
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