Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

DIY linear tonearm
DIY linear tonearm
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 16th July 2019, 01:40 PM   #3061
nocdplz is offline nocdplz
diyAudio Member
nocdplz's Avatar
Join Date: May 2010
Location: italy
...Balls seem to be ideal, they work so great... -- off topic.

Walter, Eduard: Lil Casey sounds good, but this (attachment) sounds better. By far the best i've built in ten years. Seems a common pivoted, but looking inside it differs from the others at least as much as the radial rail from usual tangential trackers.

Attached Images
File Type: jpg 3points TA.jpg (343.7 KB, 74 views)
  Reply With Quote
Old Today, 01:50 PM   #3062
nocdplz is offline nocdplz
diyAudio Member
nocdplz's Avatar
Join Date: May 2010
Location: italy
eccentric ideas

Strange program this Algodoo, it looks so childish and friendly that is frustrating to realize of not having the skills of a 4-12 child. However it is enough to see a single demo to understand that behind there is a huge computing power, that takes into account lots of parameters: frictions, elasticity, fluidity, inertia, accelerations and so on.
So i've tried with effort to dimension my parts through lots of menu, and to skip the 2D limitations. Seems ok to see more or less what happens, less to get useful data. Imho.
After complaints here the first results (attachments):

Swinging CW #3046 3049
- the idea surprisingly seems to work. It does not at 0 gravity because the frictions (even that of the air) slowly move everything, but it is enough to use a hundredth of the gravity (in practice a seismic pendulum with inclination <1) to get the system remaining consistent over time.
Working also in our real wold? It would be useful, with those bulky carriages seen around...

Silicone damped wheels #3040- fairly useless simulation because the viscosity of the liquid is not settable (only indirectly, by changing the gravity input, but it's not the same). However it shows that the motion is more or less what imagined, and the effect really acting. But calibrating in practice the weight and viscosity of the silicone to get the right synchrony seems highly difficult to achieve

have fun - carlo
Attached Images
File Type: jpg antiecc SIM.jpg (331.8 KB, 24 views)
Attached Files
File Type: zip anti eccentric AA.zip (600.7 KB, 2 views)
File Type: zip jel wheels.zip (309.1 KB, 1 views)
  Reply With Quote


DIY linear tonearmHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Linear tracking tonearm vs. Pivoting tonearm Don Nebel Analogue Source 5 31st May 2015 03:55 AM
Another DIY Tonearm johnmarkp Analogue Source 0 21st April 2008 11:07 PM
my DIY Turntables and DIY tonearm Roger Waters Analogue Source 57 22nd January 2008 06:05 PM
Magnetic suspension linear-tracking tonearm? Shaun Analogue Source 5 4th June 2003 10:21 PM

New To Site? Need Help?

All times are GMT. The time now is 08:01 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio