Stylus for Grace F9

the thin end of the wedge
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vfmarky
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Re: Stylus for Grace F9

Post by vfmarky » 26 Nov 2019 03:00

I too have got a (non genuine) PN400 stylus to use on my F-9 cart til I can afford to get the original Ruby retipped. This one is the khaki green and is a disappointing loose fit. Wondering what to do for a proper fit sans sticky tape...

jdjohn
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Re: Stylus for Grace F9

Post by jdjohn » 26 Nov 2019 03:23

The only solution is to shim it with painters tape. Add some very small strips onto the body of the F9, and then insert the PN400 stylus.

ripblade
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Re: Stylus for Grace F9

Post by ripblade » 26 Nov 2019 03:35

I've used hot melt glue applied strategically.

vfmarky
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Re: Stylus for Grace F9

Post by vfmarky » 26 Nov 2019 03:43

jdjohn wrote:
26 Nov 2019 03:23
The only solution is to shim it with painters tape. Add some very small strips onto the body of the F9, and then insert the PN400 stylus.
Oh, so the fact that the brass peg makes no firm contact doesn’t matter then?
(showing my ignorance here...)

jdjohn
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Re: Stylus for Grace F9

Post by jdjohn » 26 Nov 2019 04:00

Try it and see. If you get solid sound from both channels, it is working properly. It is surprising how little contact is necessary in order to let the electrons flow.

Alec124c41
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Re: Stylus for Grace F9

Post by Alec124c41 » 26 Nov 2019 05:06

The brass tube is to position the cantilever. The movement of the magnet on the rear of the cantilever inside the tube produces electricity in the coils of the body.
It would still work if the tube were insulated.

Cheers,
Alec

vfmarky
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Re: Stylus for Grace F9

Post by vfmarky » 26 Nov 2019 08:57

Thanks, will do...

jdjohn
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Re: Stylus for Grace F9

Post by jdjohn » 26 Nov 2019 14:32

Of course Alec is right. That's what I get for posting so late at night...after a few drinks.

Skip Pack
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Re: Stylus for Grace F9

Post by Skip Pack » 06 Dec 2019 05:01

A question for Dyolf: What type and size of cutter did you use on your Dremel to trim down the stylus assembly? There seem to be two types. First is like a circular saw blade in various diameters and tooth pitches. The second is a cutoff wheel one of some of which are specified for plastic. I have bought an F-9 with a dubious stylus and purchased an EPS 24ES from LpGear, which looks suitable but requires surgery.

TIA, Skip

Dyolf
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Re: Stylus for Grace F9

Post by Dyolf » 07 Dec 2019 18:34

Skip Pack wrote:
06 Dec 2019 05:01
A question for Dyolf: What type and size of cutter did you use on your Dremel to trim down the stylus assembly? There seem to be two types. First is like a circular saw blade in various diameters and tooth pitches. The second is a cutoff wheel one of some of which are specified for plastic. I have bought an F-9 with a dubious stylus and purchased an EPS 24ES from LpGear, which looks suitable but requires surgery.

TIA, Skip
Hello.
I used the thinnest cutting tool for the surgery. The plastic need both cutting and some grinding at the "top" to get the fitting angle correct. I was able to test-cut the prototype on a non-functioning pickup.
Steen

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Skip Pack
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Re: Stylus for Grace F9

Post by Skip Pack » 07 Dec 2019 20:46

So It sounds like I should initially remove (cutting away) material that prevents sliding the stylus assembly into the cartridge body at all, then look toward abrading as little material as possible to allow fully seating the stylus 'tube' into the body. Thanks for your help.

Dyolf
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Re: Stylus for Grace F9

Post by Dyolf » 07 Dec 2019 22:06

That is correct Skip Pack. And may I add, that several month into my new F9 listening period, the cart is utterly rewarding. It sounds fantastic, and pick up virtually no surface noise.
Steen

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