DIY Personal Turntable

[jacco vermeulen]

C'est où ça ? HCFR ?

 

[dtut]

Cyclecamper,

I did some tentative drawings and models of a floating LT, but didn't pursue it because I couldn't get longitudinal stability. I didn't think of opposing magnets. Do you have - or know of - drawings or pictures?

The LT challenges you list are real, and although surmountable, may mean LTs are more suitable to DIY than for commercial projects. Considering the quality of DIM's work so far, I hope he continues with his LT adventure because, selfishly, I want to see what he comes up with.

 

[cyclecamper]

If two or three motors is excessive, consider just adding a second idler spindle & pulley to counter the belt tension on the motor side. Should be able to make that for pennies; it is not critical as the belt absorbs some vibration.

 

[doitmyself]

If two or three motors is excessive, consider just adding a second idler spindle & pulley to counter the belt tension on the motor side. Should be able to make that for pennies; it is not critical as the belt absorbs some vibration.

Good idea, let me a few days do draw this modification, with a long o'ring, it could be not bad, even a o'ring with a spring.
Thanks Cycleclamper, really a good idea!!!

 

[doitmyself]

C'est où ça ? HCFR ?

Here:
Réalisation platine vinyle DIY : Réalisations personnelles - DIY

 

[doitmyself]

C'est où ça ? HCFR ?

If I started to do my own TT, it's also because of this person: Sourdingue, just take a look to what he has done, a great job:
DIY platine vinyle : Réalisations personnelles - DIY

 

[RCruz]

Nice Forum

Thank you for sharing.

 

[jacco vermeulen]

Ah, even more sourds dingues overthere.
(can i order a larger copy of his avatar ?)

And more/better pictures, thanks for the link.

 

[doitmyself]

If two or three motors is excessive, consider just adding a second idler spindle & pulley to counter the belt tension on the motor side. Should be able to make that for pennies; it is not critical as the belt absorbs some vibration.

Here is the modification:

 

[Helmuth]

Here is the modification:

Maybe it is a idea to make the second idler wheel also as a kind of flywheel function.

 

[RCruz]

I like the idea but IMO the idler wheel should be between the motor and the platter so it erases motor vibrations.

 

[doitmyself]

In fact, if we think a little bit, are we creating a problem where there is not a problem. In general TTs, rotation of the platter is done by only a ball around a bush (copper or plastic), so you get torque from the belt. In my case, I have a ball bearing which accepts a huge torque, and also my motor gives 30W, enough to move the platter with a high belt tension. And I will also program the servodrive with acceleration and deceleration scale (about 3 to 5 seconds).
I will not give up the idea, the tests will give reason .

 

[jacco vermeulen]

In my case, I have a ball bearing which accepts a huge torque

2 bearings, + quite a distance between the two.

 

[doitmyself]

I have finished the adjustable foots, in PEHD500, it's much more easy to work with this material.

 

[doitmyself]

Next step, a little bit more complicated, precision and coaxilaity.

 

[doitmyself]

Here is the rotating shaft done, easier than that I thought.

 

[Helmuth]

Here is the rotating shaft done, easier than that I thought.

Your a metalman doitmyself

 

[doitmyself]

Your a metalman doitmyself

Yep, I think I have missed my vocation.

 

[RCruz]

 

[doitmyself]

Waked up early (5,30 am) on this non working day (Pentecôte). Program of this morning: