TT Bearing

3GGG · 8th March 2010, 08:56 PM

Has anyone successfully built their own TT bearing or is it best to use the Teres bearing?
I am thing of getting something machined up , possibly replacing the ball with two rare earth magnets, any thoughts?

Conrad Hoffman · 9th March 2010, 12:36 AM

IMHO there are a lot of subtleties. If you can machine it yourself, definitely go for it. You'll probably go through various clearances and lubrication types and schemes, not to mention materials. If you have to pay for machining, it might be better to just buy a proven unit. I haven't fooled with magnetically suspended designs, but others certainly use them. There's some interesting info on bearings at the Vinyl Engine.

CH

audiopip · 9th March 2010, 08:06 AM

There was one design which used a poppet valve and guide I seem to recall. The stem end of the valve sat on a single ball bearing. Claimed to work OK...!

Renron · 9th March 2010, 04:34 PM

Quote:

Originally Posted by audiopip

There was one design which used a poppet valve and guide I seem to recall. The stem end of the valve sat on a single ball bearing. Claimed to work OK...!

Link here:
The Altmann DIY Turntable

Inexpensive, and works fair.

Ron

audiopip · 10th March 2010, 08:48 PM

Hi Renron,

Thanks...that was it. All very interesting stuff, although I would be concerned about unleaded gasoline!!

Renron · 12th March 2010, 05:25 PM

Quote:

Originally Posted by audiopip

Hi Renron,

Thanks...that was it. All very interesting stuff, although I would be concerned about unleaded gasoline!!

Another hoax perpetrated on the masses! Lead was added to gasoline in the early days for it's lubrication properties. We were charged extra to have it mixed in. Later, we were charged extra to have it NOT mixed in!
If you are old enough, you remember when unleaded gasoline cost more than leaded gasoline...... We got screwed coming and going!

History class over.
Ron

audiopip · 13th March 2010, 12:02 AM

Hey Ron,

I remember queuing for 101 octane..HiTest to you guys??...winding far too much advance on and kidding myself it made a difference.

I run a Jap car here in AU (having avoided buying one for years..), needs 95 octane...which guess what...costs more than 91 octane...so I get screwed again!

The consumer can never win!

8th March 2010, 08:56 PM	#1
3GGG diyAudio Member Join Date: Mar 2010	TT Bearing Has anyone successfully built their own TT bearing or is it best to use the Teres bearing? I am thing of getting something machined up , possibly replacing the ball with two rare earth magnets, any thoughts?

9th March 2010, 12:36 AM	#2
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	IMHO there are a lot of subtleties. If you can machine it yourself, definitely go for it. You'll probably go through various clearances and lubrication types and schemes, not to mention materials. If you have to pay for machining, it might be better to just buy a proven unit. I haven't fooled with magnetically suspended designs, but others certainly use them. There's some interesting info on bearings at the Vinyl Engine. CH __________________ I may be barking up the wrong tree, but at least I'm barking!

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9th March 2010, 08:06 AM	#3
audiopip diyAudio Member Join Date: Nov 2006 Location: Melbourne, AU	There was one design which used a poppet valve and guide I seem to recall. The stem end of the valve sat on a single ball bearing. Claimed to work OK...!

10th March 2010, 08:48 PM	#5
audiopip diyAudio Member Join Date: Nov 2006 Location: Melbourne, AU	Hi Renron, Thanks...that was it. All very interesting stuff, although I would be concerned about unleaded gasoline!!

13th March 2010, 12:02 AM	#7
audiopip diyAudio Member Join Date: Nov 2006 Location: Melbourne, AU	Hey Ron, I remember queuing for 101 octane..HiTest to you guys??...winding far too much advance on and kidding myself it made a difference. I run a Jap car here in AU (having avoided buying one for years..), needs 95 octane...which guess what...costs more than 91 octane...so I get screwed again! The consumer can never win!