This is exactly what I wrote about in my post 5488 about synchronizing two cartridges.
But Carlo did not consider this a problem (5489).
Let's see what solution he has.
I have my own solution.
I would be delighted and intrigued to see your solutions Andrey, and any others out there.
I consider this forum as the place where you offer up your good thoughts and advice as early as possible to help others.
Sometimes i am wrong, quite often in fact, but that's OK! - i learn.
Lots of people have helped me enormously that way and i hope if you join in that way you will find it a very constructive and respectful place!
What do you think will help in Carlo's development please?
M
I consider this forum as the place where you offer up your good thoughts and advice as early as possible to help others.
Sometimes i am wrong, quite often in fact, but that's OK! - i learn.
Lots of people have helped me enormously that way and i hope if you join in that way you will find it a very constructive and respectful place!
What do you think will help in Carlo's development please?
M
Thanks for the reply, Mike.
For the rails, do you mean something like these?
Linear Motion Shaft: Ceramic coated 6061 Aluminum
My first prototype, though I'm not even sure I'd call it that, more like an investigation of concept is pictured below. It uses a glass tube and these bearings:
3/16x3/8 ceramic ball bearing
Is that the sort of bearing you're talking about? If not, could you please elaborate (link, picture or description)?
It seems to me that there are 2 material (as opposed to design) upgrades from my current prototype. The first would be a tungsten carbide rod. I'm not sure where I'd buy this or if it would require machining I cannot perform. The second would be a jewel bearing design. What I've seen off the shelf is a bespoke design based on parts from a vendor like this:
Swiss Jewel
Is this the sort of thing we're talking about? These parts seem very small and fragile. Am I wrong about that? I'm also not clear which parts I would use and I don't know what I'd use as a disc or wheel.
Initial "investigation of concept"
BS TwinArm
The angular difference (always referred to their own pivots, not reciprocal) between two tips on the same groove can be reasonably managed, imo, as indicated in the answer to Alighiszem.
Even in the case of a considerable distance between the two (view the attachment of a "wrong" situation), the "timing difference" becomes just the matter of where you place the starting point on the first pulley of the "proper ratio connection"
What instead imposes the minimum distance of the two tips is the possibility of eccentrics on disc, which would lead to serious problems, up to skipping. This is the "small detail", "the elephant in the room" I mentioned from start.
This strange hypothesis is certainly complex and difficult to understand; and the more I go on, the more I realize how large is the "elephant family", and how concentrate must i be on real priorities. (Eg - i was calculating the relative motions basing on torque, while i've now realized to take care the overall work, instead.
Therefore, there is no point in wasting your time.
Thanks to all for precious help and interest. I will let you know
ciao - carlo
The angular difference (always referred to their own pivots, not reciprocal) between two tips on the same groove can be reasonably managed, imo, as indicated in the answer to Alighiszem.
Even in the case of a considerable distance between the two (view the attachment of a "wrong" situation), the "timing difference" becomes just the matter of where you place the starting point on the first pulley of the "proper ratio connection"
What instead imposes the minimum distance of the two tips is the possibility of eccentrics on disc, which would lead to serious problems, up to skipping. This is the "small detail", "the elephant in the room" I mentioned from start.
This strange hypothesis is certainly complex and difficult to understand; and the more I go on, the more I realize how large is the "elephant family", and how concentrate must i be on real priorities. (Eg - i was calculating the relative motions basing on torque, while i've now realized to take care the overall work, instead.
Therefore, there is no point in wasting your time.
Thanks to all for precious help and interest. I will let you know
ciao - carlo
Attachments
Hello Carlo,
Interesting idea. But maybe the elephant in the room isn't an elephant at all, but an ANT, an ELEPH ANT, no?
Ralf (likes to play with words)
Interesting idea. But maybe the elephant in the room isn't an elephant at all, but an ANT, an ELEPH ANT, no?
Ralf (likes to play with words)
Thanks Ralph, we "gadget builders" understand each other right away.
This road is full of stumbles and pitfalls, I don't know if I can get to something.
So better to be careful of the dangerous holes, the small ants can be crushed without remorse; otherwise while looking at the ant you'll fall into the hole.
c (likes to play with words too, but in italian unluckily, so often at risk to offend someone)
This road is full of stumbles and pitfalls, I don't know if I can get to something.
So better to be careful of the dangerous holes, the small ants can be crushed without remorse; otherwise while looking at the ant you'll fall into the hole.
c (likes to play with words too, but in italian unluckily, so often at risk to offend someone)
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