Micro Seiki MA 707 help please

[Cold Beer]

Hi,
I recently bought Micro Seiki MA 707 tonearm without two weights. The slider one and additional weight are missing. So, I have a small request for the owners: If you have any of them, I would appreciate if you could measure weight and dimensions of them, so I could fabricate them according to originals.

Thank you

 

[merlin el mago]

Webshop Micro-Seiki.nl

 

[Cold Beer]

No help from them. They don't support diy people, only want to sell their stuff.
Anyone else? Help please

 

[AVWERK]

I have this tonearm somewhere in my mess. If I can find it, I will post the info for you.

Did Micro ever publish a graph on where to place the adjustable mass to a specific cartridges compliance ? Otherwise its just a guesstimate

Regards
David

 

[academia50]

That photo belongs to me ! , but do not worry, I will not make any claim about it !



I remember that I had published the data you need using my wife's kitchen scales ....

Look here:

Moving Coil High Output for tonearm MicroSeiki MA-707- Vinyl Engine

 

[Cold Beer]

I have this tonearm somewhere in my mess. If I can find it, I will post the info for you.

Did Micro ever publish a graph on where to place the adjustable mass to a specific cartridges compliance ? Otherwise its just a guesstimate

Regards
David

Hi David, info that you are looking for can be downloaded from here:


Library Downloads - Vinyl Engine


@ Academia, - thank you man, i have weight now. If I did my math well, slider is around 14-15 gms, additional weight is 28 grams. Correct? Dimensions?

 

[academia50]

@ Academia, - thank you man, i have weight now. If I did my math well, slider is around 14-15 gms, additional weight is 28 grams. Correct? Dimensions?

Yes, those are the correct weights according to the calibration of my balance .....

Let me take the right dimensions and I'll pass them to you.

What you have to do in the meantime is to try the type of thread that leads in the end, that surpasses my knowledge of mechanics ... I do not think it is a DIN step but of English standards, you can try with provisional screws trying to screw them gently in the arm housing (female) until you find the correct one.

 

[Cold Beer]

No problems with thread. I can do metric, fine metric, or whitworth, no problem. It will be easy to find out when my tonearm arrives

 

[AVWERK]

It is 12.5 mm dia.
Side screw all the way in , the combined length is 19 mm


Regards
David

 

[Cold Beer]

It is 12.5 mm dia.
Side screw all the way in , the combined length is 19 mm


Regards
David

Black part made of metal like screw? Or plastic?

 

[AVWERK]

Aluminum
There is a thin rubber sheet seperating the adjustable mass from the tonearm
Make sure you duplicate this as it is damping the shaft at the same time

Regards
David