Ali's lenco build

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pre65
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#16 Re: Ali's lenco build

Post by pre65 »

andrew Ivimey wrote: Mon Mar 13, 2017 7:02 am Drool! I want to stroke it...
As long as it's only in one direction. :lol:
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#17 Re: Ali's lenco build

Post by cressy »

Update :

The possibility of motor coil hum breaking through to ali's cart whatever if may be had me worried, so ive got hold of a slab of 4mm steel plate to shield the motor from the cart.

Whacking the volume up full and taking the platter and idler tension spring off, then positioning the cart where the runout groove would be, then sliding the plate under it reduced it dramatically. Hopefully when the plate is cut it will still do it
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Ali Tait
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#18 Re: Ali's lenco build

Post by Ali Tait »

Cart will be either a Benz Gullwing SLR ( machined from a solid piece of brass) or a Denon DL S1. Not had any bother with the Benz with hum, occasionally very low level from the Denon, both on the 401.
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#19 Re: Ali's lenco build

Post by cressy »

Hmmm. When cut and in place it does nothing. The shures pick up low level hum but the audio technica doesnt. Odd
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#20 Re: Ali's lenco build

Post by cressy »

Small change by changing the cartridge bolts from steel ones to aluminium ones. Picks up less.

The audio technica has a milled aluminium body, the shures a piece of thin folded steel, the m97 doesnt have an earth strap like the 55 does. Perhaps thats the reason.
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#21 Re: Ali's lenco build

Post by cressy »

Just listened to a side of graceland and the missus reckons im being overly picky.
She says she can hear anything at the end of the side

Time possibly to bring in the man who hated vinyl
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Nick
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#22 Re: Ali's lenco build

Post by Nick »

cressy wrote: Mon Mar 13, 2017 12:14 pm Hmmm. When cut and in place it does nothing. The shures pick up low level hum but the audio technica doesnt. Odd
I think its because you are holding it in one case and in the other its attached to the chassis. Maybe try some Mu Metal.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
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#23 Re: Ali's lenco build

Post by cressy »

Sorted it
Ive used several smaller pieces of 4mm steel rather than 1 big one and kept the pieces as angular as poss. I found that angling the far edge relative to the coils seemed to deflect better than laying the pieces in a line
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#24 Re: Ali's lenco build

Post by cressy »

This is wot I did

Image

Painted the steel sections and then used adhesive sheet to hold them in place. They can be removed if needs be.

A side benefit of adding the plates is localized damping of the chassis plate where it is least damped. Focused it in some more.

The chassis plate is pretty much dead now.

Not the most elegant solution, but it works

And I only burned myself with the sparks off the grinder once :D
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pre65
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#25 Re: Ali's lenco build

Post by pre65 »

[quote=cressy

And I only burned myself with the sparks off the grinder once :D
[/quote]

Only once ? :)

Do you get your clothes full of tiny burn holes ? :lol:

PS Very,very shoddy Ant.
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Ali Tait
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#26 Re: Ali's lenco build

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Good job mate, thanks for taking the time.
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#27 Re: Ali's lenco build

Post by cressy »

Was wearing my overalls at the time. Ive learned to do that after ruining various jackets :D
It was the knuckles on one hand I burned, that glove ( i use hyflex gloves that are really grippy) has holes in the knuckles for some reason. And was right where the sparks were going

Still picking tiny bits of metal out :roll:
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#28 Re: Ali's lenco build

Post by cressy »

No probs Ali, if you buy something from anywhere its supposed to be right
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#29 Re: Ali's lenco build

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Infinity +1 megashoddy!
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#30 Re: Ali's lenco build

Post by cressy »

Love this audio technica at f7 cart. Must get another one
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