Society of Robots - Robot Forum

General Misc => Misc => Topic started by: llt on March 02, 2008, 10:01:47 PM

Title: Sound insulation
Post by: llt on March 02, 2008, 10:01:47 PM

Would waterproofing a servo with mineral oil also help make it less noisy?

Title: Re: Sound insulation
Post by: airman00 on March 02, 2008, 10:08:07 PM

not sure if you have read this
http://www.societyofrobots.com/actuators_waterproof_servo.shtml (http://www.societyofrobots.com/actuators_waterproof_servo.shtml)

but the ultimate method for waterproofing calls for mineral oil injection, and I think its not really for noises reduction but for the actual water proofing .

Title: Re: Sound insulation
Post by: Trumpkin on March 03, 2008, 03:30:35 PM

some people put their computers in mineral oil and i've heard it's dead silent.

Title: Re: Sound insulation
Post by: ed1380 on March 03, 2008, 06:11:28 PM

i think its cause there is no air turbulence inside  but doing so eats away at the plastic on the caps

about the servo
it might make it quieter because it's in oil. or make it louder cause oil is denser then air and transmits sounds better

Title: Re: Sound insulation
Post by: paulstreats on March 03, 2008, 06:13:18 PM

and of course, there would need to be some other cooling system involved since the oil would gradually get hotter and hotter

Title: Re: Sound insulation
Post by: Trumpkin on March 03, 2008, 06:35:48 PM

a link to what i was talking about http://www.instructables.com/id/Mineral-Oil-Submerged-PC/

Title: Re: Sound insulation
Post by: airman00 on March 03, 2008, 08:06:01 PM

.lol trumpkin

the reason its dead silence is because it is water cooled instead of fan cooled, there is no fan in the mineral oil computer !

Title: Re: Sound insulation
Post by: ed1380 on March 03, 2008, 08:09:16 PM

yes there is. it's just slow.

Title: Re: Sound insulation
Post by: airman00 on March 03, 2008, 08:14:47 PM

Quote from: ed1380 on March 03, 2008, 08:09:16 PM

yes there is. it's just slow.

why would they need a fan?

Title: Re: Sound insulation
Post by: paulstreats on March 03, 2008, 08:17:17 PM

...just to look good :)

...but the fan died and even when it was going it was probably using more power than intended because of the added resistance of the oil.

Title: Re: Sound insulation
Post by: Trumpkin on March 03, 2008, 08:22:36 PM

to make a long story short, putting mineral oil in servos probably doesn't make it a lot quieter.

Title: Re: Sound insulation
Post by: airman00 on March 03, 2008, 08:30:37 PM

Quote from: Trumpkin on March 03, 2008, 08:22:36 PM

to make a long story short, putting mineral oil in servos probably doesn't make it a lot quieter.

exactly

mineral oil is used because it has very low conductance ( if any)

Title: Re: Sound insulation
Post by: Admin on March 09, 2008, 02:32:07 PM

The mineral oil didn't make it noticeably quieter.

The noise results from the gears meshing. Buy some $6 servo grease and grease up all the gears. That'll help.