This sounds fantastic Martin. Unfortunately out of my 2 6000's, neither fully work. I'll watch this space for progress though.

Dave.

Hi Martin,

Is this about the indicator bands (I'd love to get some of those - one of mine is a bit crinkly) or the drive belts that move the potentiometers?

The EPDM rubber (ethylene propylene diene monomer) o-rings that I used as drive belts seem to perform admirably. I use my 6000 every day...see here for specifics:

http://beolover.blogspot.com/2014/05/beomaster-6000-4-channel-rebuilding.html

Rudy

 

 

I admire your work, Rudy., and your blog page is one of very few pages, I visit regularly.

And thanks for the tip but if I'm not mistaken they are gaskets. They are made to seal, not to provide
friction and transfer torque.

Ethylene is a hydrocarbon. It may encourage absortion of airs moisture (think Butyl - used in speaker foams).
Propylene is also a hydrocarbon, which at room temp prefers to be a gas. It will sneak away given the chance.
Best for closed compartments, I think. As in seals.
In my opinion not the most stabile composition for a component meant to work and flex around in
free air constantly - though admittedly, the Beomaster 6000/4 may not be the most belt-rotating thing
in the B&O back-catalogue. ;-)

Anyway, I prefer the belts to not stretch and losen with age, have as little memory effect as possible and
be made from a chemically stabile material, not becoming brittle with age, not hardening on the outside,
not turn into a gooey sticky mess, retain their friction with wear and contain no softeners so they won't be
prone to attack or interact with other plastics they may come into long-term contact with.

I could use one more tester, - anyone ?

Martin

I have a spare BM6000 standing here ( it's mine, not for any customer).

It needs a complete overhaul, so these belts would be welcome. I've already tested with another 2 different belts.

BTW, I use a rubber fuelhose (6mm in diameter) to attach the motor with the rest of the gear. The original tube becomes to wide and starts slipping.

The advantage of this type of fuelhose (used with carbarettors) is that is flexible, handles easily the rotating force  and doesn't break or crack. 

André,

Thanks, you have email.

Martin