Unknown Turntable belt size - how to determine?

I like using fine wire for that sort of thing. Strings stretch. :<

Of course, you will want to think about the number you get from such a measurement. E.g., the actual belt size may be smaller than you measure to allow for a snug fit (?)

Does 24.5mm sound right?

On Thu, 03 Jun 2010 13:42:48 -0500, William R. Walsh ??o??:

String. I've used it on many turntables where the belt turned to mush. Technics tt et al were one of my responsibilities at the warranty repair center before the CD made them obsolete as far as new home audio system sales were concerned. One other thing is the width of the belt is crucial in many cases. That determines how the belt sometimes rides the motor pulley and can cause problems including dismounting of the belt and speed inconsistencies.

A turntable belt has a lot of stretch to it.

You could do a Google search and find the belt like I did..............

snipped-for-privacy@zekfrivolous.com (GregS) wrote in news:hu91s4$j52$ snipped-for-privacy@usenet01.srv.cis.pitt.edu:

OK,then after that,WHERE do you buy a new belt? the store where I used to buy them locally has gone away. :-(

On Thu, 03 Jun 2010 20:05:21 +0000, GregS ??o??:

Depends on the individual TT. I've seen belts made of rubberized fabric that didn't stretch at all. My old Rek-O-Kut TT had a belt that would not stretcch at all made of some woven vulcanized rubber stuff. Any TT with a heavy platter like the Rek-O is likely to have a stiff belt. Some of the el-cheepo tables with aluminum platter will likely have a more stretchy belt but it's not etched in stone.

On 6/3/2010 1:08 PM Jim Yanik spake thus:

Well, I'm lucky to live near Berkeley (yeah, *that* Berkeley), which still has an old-time electronics store (Al Lasher's Electronics). Been there since the 1940s, and they have all kinds of belts for turntables, cassettes and VCRs.

I can't remember the name of the line of belts, but I could ask next time I go there.

On 6/3/2010 11:42 AM William R. Walsh spake thus:

Instead of string, which does stretch, you might try a strip of paper.

Which reminds me of an old turntable I used to have. As a kid in Tucson, not quite 20, I found a used turntable in a junk shop there. Cheap, because it had no belt. Took it home, and being the resourceful lad I was, I made a belt out of paper, the ends glued together with white glue. Worked great! No problems with wow & flutter or rumble. The paper belts lasted maybe a month or so before breaking. The bulb-shaped motor pulley kept the belt tracking true.

Can't remember the brand, but it was an interesting turntable. Very simple: just a deck, a motor, a spindle with inner and outer platters, and an arm mounted on some kind of isolator. The arm had a single pivot. Worked really well. (My poor man's AR.)

The whole idea is isolation. All mine had loose belts. My best Thorens TD-125 was stretchy. Had a SME arm to install on it, but sold them both.

greg

On Fri, 04 Jun 2010 13:07:28 +0000, GregS ??o??:

Loose and stretchy are different things. The belt on the Rek-O was loose too and I agree that isolation from the drive is a good idea. A stretchy belt, with more stretch than what is designed, is not good for speed stability or drift.

On Thu, 03 Jun 2010 21:38:53 -0700, David Nebenzahl put finger to keyboard and composed:

I've heard that you can use a nylon stocking as a replacement fan belt ...

- Franc Zabkar

I'd like to know if they make good anti-tank weapons. Knowing they are the bane of the life of drott and dozer drivers operating on council landfill dumps. Getting into the track drive they stall the engine. I imagine masses of tights and stockings fired into tank caterpillar drives would do the same.

On Sat, 5 Jun 2010 11:15:28 +0100, "N_Cook" put finger to keyboard and composed:

I reckon soldiers in tights and stockings would stop a tank commander in his tracks.

- Franc Zabkar

I've met WACs like that. ;-)

cis.pitt.edu:

"O-rings" come in varied width and circ...that may work?

On 6/5/2010 3:42 AM Franc Zabkar spake thus:

Complete with whips, gags and handcuffs ...

Not even on 'Casual Fridays' in the US military. OTOH, they did sell men's pantyhose with a fly at the PX at the US Army cold weather research center and at least at Fort Wainwright (which is near Fairbanks) if not at every cold weather base. They were available in either cotton or nylon. They were very heavy material, and made to wear under your thermal underwear to prevent its seams from wearing through your skin. They were also sold to mailmen to wear with their uniform shorts. This was in the early '70s and they were expensive. It doesn't take long to decide between wearing them or getting frostbite when it is below -40 most of the winter.

Hi!

Well, it seems very, very close.

This one seemed to have a somewhat broken system, as the page said that the belt was in stock. Yet when I tried to order one, I was told that the belt was out of stock. Okay, whatever. Maybe that site needs a little nap? :-)

This one seemed to work OK, and was a few dollars cheaper.

I usually deal with Studio Sound Electronics, as they were mentioned in the FAQ as a source for these kinds of parts, and I've been happy with everything I ever got from them. As long as I met the minimum order (so as not to get charged a few bucks extra), everything was fine. (They don't carry a 24.5mm belt.)

It looks like I'm going to have to replace the tape deck belts. Everything was OK until I tested the recording mode and then the cassette belt fell off. It's totally flabby and spent. This doesn't look like fun to me.

I was surprised by the uniform dust carpet (!!) inside the unit, given that there are only vents on the back. I was also surprised to see a hybrid audio power amplifier module (STK4151 II) as opposed to a discrete power amplification setup.

William

near enough 1 inch wide or 1 inch ring diameter ? surely not 1 inch diameter of the rubber cord . Or 24.5 cm ?

Hi!

Seems that it's 24.5 *cm*. I wasn't paying any attention to the unit of measurement and probably just corrected it in my mind without thinking about it.

William