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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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In Reply to: New Idlers, But Only On The Cheap ... Our Designers Show Their Colors ... Again. /long posted by J.D. on August 14, 2007 at 13:23:01:
A transmission in an automobile, or other mechanical contraption, allows a speed reduction from a higher speed motor to a slower but more forceful output. Like first gear. Allowing a small amount of power to move a large amount of weight.
Another automotive example. Find an average auto with a manual transmission. Find a hill. Not too steep. Just an average hill. Drive the car halfway up the hill. Stop the car. Place the transmission in first gear, clutch out. Release the parking brake and observe what happens.
So what happens you say? Well, if the hill isn't too awfully steep, the car will not roll down it because the transmission is locking the driving wheels from turning. The car will maintain its position on the side of the hill. However, provide enough external force on the car (like a steeper hill or maybe 3 big guys pushing it) and the wheels will turn the driveshaft, turning the transmission, turning the engine. But it takes a considerable amount of force to overcome the gear reduction within the transmission. First gear with maximum gear reduction.
I think this is what we envision when we look at idler drive turntables. The idler system provides a mechanical advantage whereby a relatively wimpy electric motor gains some mechanical advantage through its idler drive train promoting a "forward only" type of momentum. Or at least the drive train of the turntable provides a certain amount of resistance to the effects of modulating stylus drag. More so than a (non fly-wheeled) belt drive and perhaps more so than a direct drive; both of which do not enjoy any mechanical advantage through a "gear reduction drive train".
-Steve
user510's system
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Follow Ups
- RE: the benefits of a transmission - user510 21:36:29 08/14/07 (13)
- I may be missing something here... - Ivan303 05:25:50 08/15/07 (8)
- RE: I may be missing something here... - user510 08:02:02 08/15/07 (3)
- Yes, but the "Idler" itself plays no role in any of this... - Ivan303 08:07:17 08/15/07 (2)
- Perhaps there is an RPM factor to consider - tubesforever 14:33:22 08/15/07 (0)
- RE: that's right - user510 08:15:20 08/15/07 (0)
- RE: I may be missing something here... - ffrr 05:34:38 08/15/07 (3)
- RE: I may be missing something here... - cbrady 08:57:34 08/15/07 (0)
- RE: I may be missing something here... - rgordonpf 06:42:14 08/15/07 (1)
- Yes, I was just trying to explain the "advantage" of using an idler wheel over ... - ffrr 00:48:08 08/16/07 (0)
- I like that - anumber1 05:07:19 08/15/07 (3)
- this thought must have you planning something - OMalley 05:18:57 08/15/07 (2)
- RE: this thought must have you planning something - anumber1 05:24:13 08/15/07 (1)
- "friend with a large tonearm collection" - OMalley 17:30:31 08/15/07 (0)
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