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  #1  
Old 13th October 2006, 05:47 PM
rover400si
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Default adjusting gyrodec SE

Anyone familiar with adjusting springs of a gyro se turntable. I find it a bit cumbersome. Any tip is appreciated.
I know my turntable can produce better sound if adjusted right
Cheers
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  #2  
Old 13th October 2006, 06:24 PM
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pre65 pre65 is offline
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Default Re: adjusting gyrodec SE

Hi-springs on a turntable ?

whatever next !

Philip
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  #3  
Old 13th October 2006, 06:27 PM
I love my records I love my records is offline
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Default Re: adjusting gyrodec SE

I'll post after my tea....

I've spent years getting mine 'spot-on'...it sings..
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Old 13th October 2006, 07:07 PM
I love my records I love my records is offline
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Default Re: adjusting gyrodec SE

Right, finished my steak sandwiches...

1. The three adjustable feet should be screwed in until they are firm (don't overtight until they snap!)

2. Ensure you have the deck on a level surface, use a spirit level to get this bang-on.

3. Now, the three adjustable springs are not-centred, they seem biased towards one direction, the secret is to get them working 'in harmony' with each other.

Get the platter level (use a small bubble level or spirit level), making enough clearance between the 'spider' and the 3 felt pads ( I have about 2mm or thereabouts)..The spring should still not really collide with the felt when you bounce gently.

Imagine if each spring was pulling away from the centre towards the outside of the chassis, this would restrict the 'bounce' which is easily checkable by pushing down at about 2'oclock on an empty platter. The platter should bounce up and down with no sway or 'strange' oscillation.

If you experiment with the 'pull' of each spring by rotating it, you can get a lovely, smooth, uninterrupted bounce. I got mine by getting the springs to pull as if each were pulling clockwise around the platter.

Now, the belt should be parallel with the groove on the platter, with the new spring set up, this is simple to adjust, although if you have the old gyro like me, you can move the pulley slightly up or down to get it bang on

Oh, and if you're using a rega arm, adjusting VTA is a pain..I had to replace the 3 plasric spacers below the arm board with washers until I got it right. I'm running a Goldring 1042 slightly tail down at 1.85g and the deck is singing its little head off..

If you need any further help, just say.

Dave.
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Old 13th October 2006, 07:49 PM
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Default Re: adjusting gyrodec SE

You might find this unofficial site useful with set up details.

http://www.angelfire.com/music5/gyrodec/

Best wishes,

Greg
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Old 13th October 2006, 08:58 PM
rover400si
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Default Re: adjusting gyrodec SE

tnx a lot guys
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Old 14th October 2006, 06:49 PM
rover400si
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Default Re: adjusting gyrodec SE

Dave,
The platter is perfectly water level and the springs are centralized. There is clearance between the 'spider' and the 3 felt pads (aout 1-2 mm. Yet the bounce is more vertically than horizontly. Do you have any suggestion? Need the springs, i mean all three of them be positioned central? Or do i have to expiriment with that?

Thanks
Peter
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Old 14th October 2006, 07:31 PM
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Shane Shane is offline
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Default Re: adjusting gyrodec SE

I've not set up a Gyrodec, but I assume it's much the same as any other sprung turntable with three springs. The result is meant to be that the sub-chassis bounces up and down with no rotational or side-to-side movement.
What makes this hard is that coil springs don't compress evenly, but tend to lean over when compressed. A good place to start is to look at the coils from the top, and rotate each spring so that the end of the top coil is on the inside towards the spindle. This makes sure that the tendancy of each coil to bend over sideways is counteracted by the other two. It may be necessary to adjust these positions a little, depending on the weight distribution of the sub-chassis, but once you understand what it is that upsets the "bounce", it becomes easier to work out what's going on.

Edit: I've just realised that the springs on a gyrodec are in tension, not compression, but the same principle applies!

Last edited by Shane; 14th October 2006 at 07:48 PM.
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  #9  
Old 14th October 2006, 07:32 PM
G.Axiom G.Axiom is offline
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Default Re: adjusting gyrodec SE

Quote:
Originally Posted by rover400si
Dave,
... Need the springs, i mean all three of them be positioned central? ....

Thanks
Peter
I dont know about Gyro but at least TD 150 mkII needed exactly that, carefully non-centralized springs. Not a chance to get good lookinj bounce springs centralized.
Go and try.... if it does not sound right, just do something else.

..and happy listengs..

edit: Shane, good you pointed out that position of spring ends. Its that long time ago I last adjustetrd it that forgat to mention that. Meanwhile, have just been listening an idler
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  #10  
Old 14th October 2006, 12:08 AM
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Cobblers Cobblers is offline
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Default Re: adjusting gyrodec SE

Quote:
Originally Posted by pre65
Hi-springs on a turntable ?

whatever next !

Philip
"when a poster uses or or i can see it is a tongue in cheek comment (or extracting the urine) but sometimes i wonder."



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