Grampian Type D - Reconditioning

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jamesfabel
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Grampian Type D - Reconditioning

Post: # 48030Unread post jamesfabel
Thu Oct 05, 2017 7:43 pm

Hey trolls

I have a Grampian feedback cutting head - type D

and i would like to recondition it - i have the original manual, which i will scan and upload to the repository if there is not already copy.

Wherein it refers to some items and materials that Im hoping someone with some insight can suggest modern equivalents

They are:

Silicone damping fluid - 'Dow Corning'

Absorbent washer

Sealing pads

Spacers

Cement - 'Goodyear Plio-bond'

I have the original of all above except the cement - i imagine they should be replaced, if there is a ideal solution.

The rest of the instructions are relatively straightforward, but if a troll out there knows of any tricks

Im all ears.

Cheers
Jamesfabel

ps. a couple of photos attached of the components as they were once removed.

pps. Im very interested in matching a Gotham amplifier to this - if anyone knows of where i can get one - please PM :)
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jts
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Re: Grampian Type D - Reconditioning

Post: # 61717Unread post jts
Thu Nov 10, 2022 4:36 pm

Would be interested in grampian D manual
Is possible to get copy? Or where to find?

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piaptk
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Re: Grampian Type D - Reconditioning

Post: # 61718Unread post piaptk
Thu Nov 10, 2022 7:06 pm

If you successfully wind a new saddle coil for this, I would be interested in buying a few. I don't have a coil form for it. Thanks!
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mrd
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Re: Grampian Type D - Reconditioning

Post: # 61737Unread post mrd
Mon Nov 14, 2022 5:32 pm

Nice, I'd be interested in the manual too!

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emorritt
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Re: Grampian Type D - Reconditioning

Post: # 61743Unread post emorritt
Tue Nov 15, 2022 8:33 am

I have the manual for this head; will scan it and post when I get home from work today.

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mrd
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Re: Grampian Type D - Reconditioning

Post: # 61954Unread post mrd
Mon Dec 19, 2022 2:32 am

emorritt wrote:
Tue Nov 15, 2022 8:33 am
I have the manual for this head; will scan it and post when I get home from work today.
Hi, any joy with this please - would really like a copy if possible!

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emorritt
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Re: Grampian Type D - Reconditioning

Post: # 62080Unread post emorritt
Sat Jan 07, 2023 10:01 am

Sorry this took so long; here are the two pages of the tech literature that came with the Grampian head:

Image

Image

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mrd
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Re: Grampian Type D - Reconditioning

Post: # 62096Unread post mrd
Mon Jan 09, 2023 3:03 am

emorritt wrote:
Sat Jan 07, 2023 10:01 am
Sorry this took so long; here are the two pages of the tech literature that came with the Grampian head:

Image

Image
No problem, thanks for uploading!

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dubcutter89
Posts: 359
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Location: between the grooves..

Re: Grampian Type D - Reconditioning

Post: # 62152Unread post dubcutter89
Mon Jan 16, 2023 6:09 am

Thanks for sharing - BUT - I cannot view these images...why?

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Lukas
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SueDenim
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Re: Grampian Type D - Reconditioning

Post: # 62153Unread post SueDenim
Mon Jan 16, 2023 8:55 am

Try these perhaps?

Image
Image

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dubcutter89
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Location: between the grooves..

Re: Grampian Type D - Reconditioning

Post: # 62154Unread post dubcutter89
Mon Jan 16, 2023 9:06 am

They work - THANKS!!
Wanted: ANYTHING ORTOFON related to cutting...thx

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DavidS
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Re: Grampian Type D - Reconditioning

Post: # 63337Unread post DavidS
Wed Sep 13, 2023 4:50 am

Hi, who has tried to rewind the coil for Grampian D head?

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Fela Borbone
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Re: Grampian Type D - Reconditioning

Post: # 63339Unread post Fela Borbone
Wed Sep 13, 2023 8:16 am

Hello,
I wounded saddle coils, for grampian replica, and is not really difficult. You have to wind them round first, around a cylinder (I used a marker) and with two rubber stops away from a 3mm gap. Then wind first the feedback with the thinnest wire you can get, and then, around hundred turns of thicker wire for the drive coil, When is done, carefully remove the rubber and tie around the coil some Teflon strip, or alike to keep the turns together.
Then bend it to a saddle shape around the armature. If is too big or too small, try with other cylinder diameter. Check resistance of the coils, and change number of turns or gauge if needed. This may take the whole afternoon, dont worry, relax and enjoy.
The "sweet spot" of resistance/gauge/number or turns ratio is wide, it don't have to be exact. Its more important that the coil fit perfect on his place, and don't protude too much outside the pole pieces, this will cause a big waste.
I'll try to find pictures, and check wich gauge I used, if I find n my notes....

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