Hi
I was wandering if anyone has already attempted to DIY a tonearm with ferrofluid bearing .
Tks n rgds
Adelmo
I was wandering if anyone has already attempted to DIY a tonearm with ferrofluid bearing .
Tks n rgds
Adelmo
I don't know of one, but wanted to say it's an interesting idea! Sort of like using silicone fluid for damping.
Wow! That's pretty weird. I guess for use in a turntable you'd just have to make sure the carrier fluid does not dry out, so maybe the speaker type of fluid which uses synthetic oil might be the one.
I recently replaced ferrofluid in a pair of tweeters and it's interesting stuff. You don't really have to carefully distribute it around the voice coil gap - it's just sucked out of the syringe and spreads around the gap. It may need a bit of encouragement to be evenly spread, but very little.
I recently replaced ferrofluid in a pair of tweeters and it's interesting stuff. You don't really have to carefully distribute it around the voice coil gap - it's just sucked out of the syringe and spreads around the gap. It may need a bit of encouragement to be evenly spread, but very little.
I made a linear tracking tonearm with ferrofluid "bearing". It functioned for one side of the LP, but dried out pretty fast, leaving a residue on the linear track.
HI,
I made a linear tracking tonearm with ferrofluid "bearing". It functioned for one side of the LP, but dried out pretty fast, leaving a residue on the linear track.
May be too much water or alcohol in the mix?
Rgds
Adelmo
I made a linear tracking tonearm with ferrofluid "bearing". It functioned for one side of the LP, but dried out pretty fast, leaving a residue on the linear track.
May be too much water or alcohol in the mix?
Rgds
Adelmo
Adelmo, I bought it from a dealer in Australia called Frenergy Magnets who are a Ferrotec Ferrofluid stockist.
https://frenergy.com.au/collections/shop?q=ferrofluid
https://frenergy.com.au/collections/shop?q=ferrofluid
No, not the fluid is ferromagnetic, just the particles suspended in it. The particles remained on the magnet, the fluid got smeared on the track.
HI Alighiszem,
Tks for the information. Did you buy the ferrofluid or you made by yourself ?
Best regards
Adelmo
Tks for the information. Did you buy the ferrofluid or you made by yourself ?
Best regards
Adelmo
I built a linear tracker using ferrofluid. Lots of fun, sounds good, still a work in progress.
Don't bother with the expensive speaker ferrofluid, just use the "educational" EFH1 grade and dose it weekly with WD-40 to keep it fluid.
A hassle, but no more than cleaning a record...
The EFH1 has higher lifting force than the expensive loudspeaker grades. It's VERY messy to work with, so make sure your design contains it well.
Don't bother with the expensive speaker ferrofluid, just use the "educational" EFH1 grade and dose it weekly with WD-40 to keep it fluid.
A hassle, but no more than cleaning a record...
The EFH1 has higher lifting force than the expensive loudspeaker grades. It's VERY messy to work with, so make sure your design contains it well.