Source for belts?

On Tuesday, March 1, 2016 at 7:56:42 AM UTC-8, N_Cook wrote:

> I wonder how you lathe-cut rubber drive belts?

In a science-lab with a machine shop, you fit it to a mandrel, and
dip it in liquid nitrogen, first.
 
When sizing a belt:

for example, an old flat, wide (10 mm?) capstan belt measures 9 inches on the
“belt measurer-thing”, how much do you subtract when shopping for a
replacement size?

And for the 3-inch tape-counter belt (round cross-section, “o-ring”)?

Thanks.
 
When sizing a belt:

for example, an old flat, wide (10 mm?) capstan belt measures 9 inches on the
“belt measurer-thing”, how much do you subtract when shopping for a
replacement size?

The belt-sellers I've dealt with seem to suggest that you subtract 10%
of the old belt's size, to allow for stretching.
 
pfjw@aol.com <pfjw@aol.com> wrote:
> Tires are easy. Remove old idler, machine small groove in OD. Fit with O-ring of correct diameter & circumference. Replace idler. Done. Usually no need to glue, either. Flat idler get flat rings if necessary, or soft hemispherical rings. Note that perfect roundness is also achieved by this process.

I call BS on this.

Let me know the easy steps to replace the rubber on this part with an
O-ring from the hardware store.

http://www.smcelectronics.com/VCRIW12.JPG. Pretty common part back in the
day.

I find it unlikely anything MCM has in stock hasn't already turned brown
next to the rubber.

Repeat: belts need only fit reliably. They do not affect rpm. They do not have to be a exact match. A nitrile toothed belt inside out will do fine.

Graf, Breco, Parker (Euro, UK, US) all make 0.5mm belts in many materials, smooth, ribbed, toothed, fiber-reinforced, or not. Let your fingers do the walking. McMaster-Carr is a stocking distributor for many makers, and sell both flat stock and ready made belts of many types. The world is a big place, and much of it is at your fingertips.

If you have the parker EZ reference wall poster cross reference for VCR or
turntable belts be sure to share.

Even VCR makers started to drop all the belts towards the end. You started
to see lots of gears instead.
 
On Wednesday, March 2, 2016 at 6:13:48 PM UTC-5, Cydrome Leader wrote:
pfjw@aol.com <pfjw@aol.com> wrote:
Tires are easy. Remove old idler, machine small groove in OD. Fit with O-ring of correct diameter & circumference. Replace idler. Done. Usually no need to glue, either. Flat idler get flat rings if necessary, or soft hemispherical rings. Note that perfect roundness is also achieved by this process.

I call BS on this.

Let me know the easy steps to replace the rubber on this part with an
O-ring from the hardware store.

http://www.smcelectronics.com/VCRIW12.JPG. Pretty common part back in the
day.

YIKES!!

That one is easy. Remove the rubber altogether and replace it. If the OEM rubber is very old, it should crumble off pretty easily. Otherwise, removal with a solvent that does not attack the white plastic should be a pretty basic technique - acetone comes to mind not knowing exactly what that white plastic might be, but likely nylon or delrin.

Then, replace it with a flat O-ring out of a catalog, McMaster-Carr and/or any of a dozen other sources. Don't forget to re-lubricate the bearing...

http://mykin.com/orings.html/?_vsrefdom=adwords&gclid=Cj0KEQiA3t-2BRCKivi-suDY24gBEiQAX1wiXL6bP7URTGduRmp-bkRG0P7Jbk0aSWqRfp7tdP2oR4EaAi8q8P8HAQ That being just one. You will have your choice of materials, some of them with far more longevity than the OEM part.

My lathe technique is pointed towards the Oilite Bearing type idlers very common back in the day - such as on very vintage Dual turntables and more. These tend to be quite thin, so a bit of machining will usually allow a solid new edge for the applied O-ring "spare tire".

My hobby activities include electronics back as far as 1919, and as recent as the 1990s (but few of those). I tend to avoid vintage moving parts as there are so many things that go wrong after 80 or more years - pot-metal decay, rust, and such - that cannot be fixed. But I have never failed to fix something worthwhile albeit over some considerable time in some cases. Right now, a bit back in the queue is an Edison Home 2-minute machine that needs the drive spring redone. I have a source for a new spring, but I will first try to salvage the existing spring if possible. If the break is at the 'hook' as is typical, I will anneal the end, cut and bend a new hook, then re-harden the end - and cross my fingers.

Look for solutions, not impediments.

Peter Wieck
Melrose Park, PA
 
"N_Cook" wrote in message news:nb103f$s5i$1@dont-email.me...

On 29/02/2016 06:39, Ken Layton wrote:
On Sunday, February 28, 2016 at 9:14:46 PM UTC-8, DaveC wrote:
for refurbishing a tape deck, I need some belts. I googled a few places
but
nothing very inspiring (not a great selection).


Anybody have a source they like and use?

(If you're just going to Google, don't bother, I've already done
that...)

Thanks!

Russell Industries bought out the old Projector-Recorder Belt Corp several
years ago and still carries the "PRB Line":

http://www.russellind.com/prbline/index.html

They should have your belts. Just give them a call.

But do they say whether they are new belts or old stock (so half
perished already)?
The total absence of any supplier stating they had new belts made me
move over to cutting my own belts , flat and square , from silicone
rubber kitchen products, no returns yet from broken examples.





Can you remind us what these products are?

I remember some conical shaped thing, and I think this is actually quite a
good idea.



Cheers,

Gareth.
 
On 05/03/2016 00:06, Gareth Magennis wrote:
"N_Cook" wrote in message news:nb103f$s5i$1@dont-email.me...

On 29/02/2016 06:39, Ken Layton wrote:
On Sunday, February 28, 2016 at 9:14:46 PM UTC-8, DaveC wrote:
for refurbishing a tape deck, I need some belts. I googled a few
places but
nothing very inspiring (not a great selection).


Anybody have a source they like and use?

(If you're just going to Google, don't bother, I've already done
that...)

Thanks!

Russell Industries bought out the old Projector-Recorder Belt Corp
several years ago and still carries the "PRB Line":

http://www.russellind.com/prbline/index.html

They should have your belts. Just give them a call.


But do they say whether they are new belts or old stock (so half
perished already)?
The total absence of any supplier stating they had new belts made me
move over to cutting my own belts , flat and square , from silicone
rubber kitchen products, no returns yet from broken examples.





Can you remind us what these products are?

I remember some conical shaped thing, and I think this is actually quite
a good idea.



Cheers,

Gareth.

The main one is collapsible silicone funnels, ridiculous idea I know so
I grapped 12 or so before the importers would come to their senses, 6
black and 6 dull red unlike the usual "neon" kitchen silicone .
You also need some razor blades set up in a holder to split the
thickness and some mandrels to stretch over, to then cut around in a
sort of lathe fashion, then making finishing cuts by eye and hand ,
because the rubber always moves a bit in the cutting process, so end of
cut will never exactly meet the start.
Luckily I've never come across a situation where you need a fair face on
both sides of a band, even then perhaps a 180 deg axial twist in such a
band, and back on the other side, could work there.
For walkman size bands, I set up a sort of grinding machine with
"Dremmel" and "diamond" disc to "grind" back imperfections of such cut
bands.
 
On Thursday, March 3, 2016 at 8:24:40 AM UTC-5, pf...@aol.com wrote:
Let me know the easy steps to replace the rubber on this part with an
O-ring from the hardware store.


Then, replace it with a flat O-ring out of a catalog, McMaster-Carr and/or any of a dozen other sources. Don't forget to re-lubricate the bearing...

This is an extreme nitpick but maybe somebody would like to know.

To the general population an O-ring is any washer or gasket with a round cross section. I'm not so sure anybody thinks a flat gasket is actually an O-ring, but most people think any round one is.

Not so. Mechanical engineers have a technical definition of the O-ring, and it is not shape but function.

See here:
http://www.row-inc.com/sizes.html

If the gasket of circular cross section is sized so that it can rotate inside that groove, then and only then is it an O-ring.

Okay, nobody cares. But now you know.

(just try confusing a magazine and a clip on a firearms forum, and you'll see what abuse you get)
 
On Sunday, March 13, 2016 at 1:05:19 PM UTC-4, Tim R wrote:
On Thursday, March 3, 2016 at 8:24:40 AM UTC-5, pf...@aol.com wrote:
Let me know the easy steps to replace the rubber on this part with an
O-ring from the hardware store.


Then, replace it with a flat O-ring out of a catalog, McMaster-Carr and/or any of a dozen other sources. Don't forget to re-lubricate the bearing...


This is an extreme nitpick but maybe somebody would like to know.

To the general population an O-ring is any washer or gasket with a round cross section. I'm not so sure anybody thinks a flat gasket is actually an O-ring, but most people think any round one is.

Not so. Mechanical engineers have a technical definition of the O-ring, and it is not shape but function.

See here:
http://www.row-inc.com/sizes.html

If the gasket of circular cross section is sized so that it can rotate inside that groove, then and only then is it an O-ring.

Okay, nobody cares. But now you know.

(just try confusing a magazine and a clip on a firearms forum, and you'll see what abuse you get)

All true. But, and however, go into an industrial supply house and ask for a gasket... you will likely get something hard and made of a fibrous material, but also flat.

Ask for a flat O-ring, and you are far more likely to get what you want. Search in McMaster Carr - get roughly the same results.

Further to this, and in the specific application given, a true O-ring of the correct diameter would serve just as well as a flat "gasket".

Peter Wieck
Melrose Park, PA
 
Farnell !


DaveC a ĂŠcrit :
for refurbishing a tape deck, I need some belts. I googled a few places but
nothing very inspiring (not a great selection).


Anybody have a source they like and use?

(If you’re just going to Google, don’t bother, I’ve already done
that…)

Thanks!
 
On Monday, March 14, 2016 at 10:08:54 AM UTC-4, pf...@aol.com wrote:
On Sunday, March 13, 2016 at 1:05:19 PM UTC-4, Tim R wrote:
On Thursday, March 3, 2016 at 8:24:40 AM UTC-5, pf...@aol.com wrote:
Let me know the easy steps to replace the rubber on this part with an
O-ring from the hardware store.


Then, replace it with a flat O-ring out of a catalog, McMaster-Carr and/or any of a dozen other sources. Don't forget to re-lubricate the bearing...


This is an extreme nitpick but maybe somebody would like to know.

To the general population an O-ring is any washer or gasket with a round cross section. I'm not so sure anybody thinks a flat gasket is actually an O-ring, but most people think any round one is.

Not so. Mechanical engineers have a technical definition of the O-ring, and it is not shape but function.

See here:
http://www.row-inc.com/sizes.html

If the gasket of circular cross section is sized so that it can rotate inside that groove, then and only then is it an O-ring.

Okay, nobody cares. But now you know.

(just try confusing a magazine and a clip on a firearms forum, and you'll see what abuse you get)

All true. But, and however, go into an industrial supply house and ask for a gasket... you will likely get something hard and made of a fibrous material, but also flat.

Ask for a flat O-ring, and you are far more likely to get what you want. Search in McMaster Carr - get roughly the same results.

Further to this, and in the specific application given, a true O-ring of the correct diameter would serve just as well as a flat "gasket".

Peter Wieck
Melrose Park, PA

I am not a net nazi and I will not correct anybody. But if I use the word O-ring, it probably means the mechanical engineering definition. Your points are well taken.
 
On Thursday, March 17, 2016 at 1:30:56 PM UTC-4, N_Cook wrote:

China has the right idea, pics available from the primary source
http://www.alibaba.com/product-detail/3D-Easter-Egg-Chocolate-Silicone-mold_1992750941.html
something to do tomorrow, generate a lifetime supply of flat belts
hopefully.

This is SO much *WORK* when, with only minimal searching from any number of active and current sources selling belts of recent manufacture one can find about any belt in about any dimension one needs. Really! Typical cost: Less than US$0.50 per belt.

Peter Wieck
Melrose Park, PA
 
On 05/03/2016 08:35, N_Cook wrote:
On 05/03/2016 00:06, Gareth Magennis wrote:


"N_Cook" wrote in message news:nb103f$s5i$1@dont-email.me...

On 29/02/2016 06:39, Ken Layton wrote:
On Sunday, February 28, 2016 at 9:14:46 PM UTC-8, DaveC wrote:
for refurbishing a tape deck, I need some belts. I googled a few
places but
nothing very inspiring (not a great selection).


Anybody have a source they like and use?

(If you're just going to Google, don't bother, I've already done
that...)

Thanks!

Russell Industries bought out the old Projector-Recorder Belt Corp
several years ago and still carries the "PRB Line":

http://www.russellind.com/prbline/index.html

They should have your belts. Just give them a call.


But do they say whether they are new belts or old stock (so half
perished already)?
The total absence of any supplier stating they had new belts made me
move over to cutting my own belts , flat and square , from silicone
rubber kitchen products, no returns yet from broken examples.





Can you remind us what these products are?

I remember some conical shaped thing, and I think this is actually quite
a good idea.



Cheers,

Gareth.

The main one is collapsible silicone funnels, ridiculous idea I know so
I grapped 12 or so before the importers would come to their senses, 6
black and 6 dull red unlike the usual "neon" kitchen silicone .
You also need some razor blades set up in a holder to split the
thickness and some mandrels to stretch over, to then cut around in a
sort of lathe fashion, then making finishing cuts by eye and hand ,
because the rubber always moves a bit in the cutting process, so end of
cut will never exactly meet the start.
Luckily I've never come across a situation where you need a fair face on
both sides of a band, even then perhaps a 180 deg axial twist in such a
band, and back on the other side, could work there.
For walkman size bands, I set up a sort of grinding machine with
"Dremmel" and "diamond" disc to "grind" back imperfections of such cut
bands.

For anyone in the UK, go to Aldi , before easter.
3GB , so for less than the price of one flat belt from Farnell, plus VAT
etc. Better than those funnels for cutting up into bands.

"exploded view" chocolate easter egg moulds. As close to ideal as
possible for supplying flat drive belts as concentric flat rings
complete range from 10mm diameter to 87mm diameter. When split would
give 50 bands 1.5mm thick, from 1 to 5mm wide, as they are then 5mm
wide. Plus 12 thin cylinders that may well stretch to cover failed
cassette tape pinch rollers.
To go to .5mm thick , I'll try stretching over various cylinders as
mandrels plus washers. Cut all the putative bands off the sheet, by
cutting through the main plane of the sheet mould so they will evenly
lay-up against each other on the mandrel with washer spacers and apply
some pressure to keep the rubber from squirming when cutting and set a
razor blade in the toolpost and razor through , turning the lathe chuck
by hand.
Then if non-parallel faces , then "grind" down with "diamond" disc in
dremmel ablating back to widest sections. With all such bands then at
least one fair face for going against balluster drive pinions.

++++++++++
Crap commercialism, google cached only it would seem
http://webcache.googleusercontent.com/search?q=cache:tJVmebmtr6sJ:https://www.aldi.co.uk/p/68604/0%2Beaster+chocolate+moulds+site:aldi.co.uk&hl=en-GB&gbv=1&um=1&tab=iw&&ct=clnk
not for viewing directly from Aldi site,by any potential customers
"3D Chocolate Egg Mould
Product Ref: 068604020813200
Ł 2.99 Make and decorate your own homemade Easter eggs for friends
and family.
They'll love making delicious chocolate treats with this egg mould -
plus it's a great way to get the creative juices flowing.

Design: 3D Egg
Dimensions: 30.5 x 30.5 x 1.5cm
Material: LFGB Silicone Mould
Product Type: Chocolate Moulds

"
supposed URL of
https://www.aldi.co.uk/p/68604/0#
so no pic available to my browser anyway.
If anyone else finds a valid URL, please post here
 
On 17/03/2016 17:20, N_Cook wrote:
On 05/03/2016 08:35, N_Cook wrote:
On 05/03/2016 00:06, Gareth Magennis wrote:


"N_Cook" wrote in message news:nb103f$s5i$1@dont-email.me...

On 29/02/2016 06:39, Ken Layton wrote:
On Sunday, February 28, 2016 at 9:14:46 PM UTC-8, DaveC wrote:
for refurbishing a tape deck, I need some belts. I googled a few
places but
nothing very inspiring (not a great selection).


Anybody have a source they like and use?

(If you're just going to Google, don't bother, I've already done
that...)

Thanks!

Russell Industries bought out the old Projector-Recorder Belt Corp
several years ago and still carries the "PRB Line":

http://www.russellind.com/prbline/index.html

They should have your belts. Just give them a call.


But do they say whether they are new belts or old stock (so half
perished already)?
The total absence of any supplier stating they had new belts made me
move over to cutting my own belts , flat and square , from silicone
rubber kitchen products, no returns yet from broken examples.





Can you remind us what these products are?

I remember some conical shaped thing, and I think this is actually quite
a good idea.



Cheers,

Gareth.

The main one is collapsible silicone funnels, ridiculous idea I know so
I grapped 12 or so before the importers would come to their senses, 6
black and 6 dull red unlike the usual "neon" kitchen silicone .
You also need some razor blades set up in a holder to split the
thickness and some mandrels to stretch over, to then cut around in a
sort of lathe fashion, then making finishing cuts by eye and hand ,
because the rubber always moves a bit in the cutting process, so end of
cut will never exactly meet the start.
Luckily I've never come across a situation where you need a fair face on
both sides of a band, even then perhaps a 180 deg axial twist in such a
band, and back on the other side, could work there.
For walkman size bands, I set up a sort of grinding machine with
"Dremmel" and "diamond" disc to "grind" back imperfections of such cut
bands.

For anyone in the UK, go to Aldi , before easter.
3GB , so for less than the price of one flat belt from Farnell, plus VAT
etc. Better than those funnels for cutting up into bands.

"exploded view" chocolate easter egg moulds. As close to ideal as
possible for supplying flat drive belts as concentric flat rings
complete range from 10mm diameter to 87mm diameter. When split would
give 50 bands 1.5mm thick, from 1 to 5mm wide, as they are then 5mm
wide. Plus 12 thin cylinders that may well stretch to cover failed
cassette tape pinch rollers.
To go to .5mm thick , I'll try stretching over various cylinders as
mandrels plus washers. Cut all the putative bands off the sheet, by
cutting through the main plane of the sheet mould so they will evenly
lay-up against each other on the mandrel with washer spacers and apply
some pressure to keep the rubber from squirming when cutting and set a
razor blade in the toolpost and razor through , turning the lathe chuck
by hand.
Then if non-parallel faces , then "grind" down with "diamond" disc in
dremmel ablating back to widest sections. With all such bands then at
least one fair face for going against balluster drive pinions.

++++++++++
Crap commercialism, google cached only it would seem
http://webcache.googleusercontent.com/search?q=cache:tJVmebmtr6sJ:https://www.aldi.co.uk/p/68604/0%2Beaster+chocolate+moulds+site:aldi.co.uk&hl=en-GB&gbv=1&um=1&tab=iw&&ct=clnk

not for viewing directly from Aldi site,by any potential customers
"3D Chocolate Egg Mould
Product Ref: 068604020813200
Ł 2.99 Make and decorate your own homemade Easter eggs for friends
and family.
They'll love making delicious chocolate treats with this egg mould -
plus it's a great way to get the creative juices flowing.

Design: 3D Egg
Dimensions: 30.5 x 30.5 x 1.5cm
Material: LFGB Silicone Mould
Product Type: Chocolate Moulds

"
supposed URL of
https://www.aldi.co.uk/p/68604/0#
so no pic available to my browser anyway.
If anyone else finds a valid URL, please post here

China has the right idea, pics available from the primary source
http://www.alibaba.com/product-detail/3D-Easter-Egg-Chocolate-Silicone-mold_1992750941.html
something to do tomorrow, generate a lifetime supply of flat belts
hopefully.
 
About 3 hours to render down one sheet to all these bands, not all
sliced down as can do to required thickness when required. Went out and
bought another sheet , as a seasonal product, and the idea worked so well.
http://diverse.4mg.com/silicone_bands_easter.jpg
The blow hole plug plus cylinders shown , with one stretched over a
pinch wheel.
As long as the increased diameter does not rub on the carrier, AFAIR
always enough clearance. So those plus standard O Orings , one or 3
layed in periphery for pulley tyres(flat edges are not required for
tyres in tape decks), completes the universal rubber tool kit.
Plus remnants in pic. minimum I've "bean sliced" down to without
breaking is about 0.3mm thick.
 
On 22/03/2016 14:01, N_Cook wrote:
About 3 hours to render down one sheet to all these bands, not all
sliced down as can do to required thickness when required. Went out and
bought another sheet , as a seasonal product, and the idea worked so well.
http://diverse.4mg.com/silicone_bands_easter.jpg
The blow hole plug plus cylinders shown , with one stretched over a
pinch wheel.
As long as the increased diameter does not rub on the carrier, AFAIR
always enough clearance. So those plus standard O Orings , one or 3
layed in periphery for pulley tyres(flat edges are not required for
tyres in tape decks), completes the universal rubber tool kit.
Plus remnants in pic. minimum I've "bean sliced" down to without
breaking is about 0.3mm thick.

half price Aldi , remaindered after easter now
 
On 29/02/2016 16:14, DaveC wrote:
for refurbishing a tape deck, I need some belts. I googled a few places but
nothing very inspiring (not a great selection).


Anybody have a source they like and use?

(If you’re just going to Google, don’t bother, I’ve already done
that…)

Thanks!

Try here:-

https://www.wes.com.au/mediapub/ebook/wescat2014np/#1220

Colin



---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
 

Welcome to EDABoard.com

Sponsor

Back
Top