NEO GEO Evolution (EVS-1) - Experimenting with DIY trackball

Main > Project Announcements

<< < (7/35) > >>

DaOld Man:

--- Quote from: BadMouth on May 08, 2012, 09:41:40 pm ---....
(and it's all your fault I'm playing with linear actuators)
.....

--- End quote ---

I have to pass the buck to DarthPaul, he's the one that got me started on actuators.
Its just like they told us in elementary school about drugs, once you start you can never go back.

Seriously, I like how professional your build is looking.

ataruzzolo:
Very smooth!

kahlid74:
Very nice! Great use of actuators and turning mechanisms. I'm still concerned about the weight of your 27" monitor and the lazy susan (weight being on a different plane than the LS was intended to work with) but you've got the big dogs of rotating monitors in this thread and if they were worried they'd have said something.

Keep up the great work!

Le Chuck:

--- Quote from: kahlid74 on May 09, 2012, 08:54:27 am ---Very nice! Great use of actuators and turning mechanisms. I'm still concerned about the weight of your 27" monitor and the lazy susan (weight being on a different plane than the LS was intended to work with) but you've got the big dogs of rotating monitors in this thread and if they were worried they'd have said something.

Keep up the great work!

--- End quote ---

The LS he is using is not a thrust bearing. I'm not worried.

BadMouth:

--- Quote from: TopJimmyCooks on May 08, 2012, 10:42:04 pm ---At least you've got a machinist grade stamped steel framing square to work with! [Kidding- i use a little speed square all the time for metalworking, so I can't say anything]

Building in adjustable limit switches is the way to go.

--- End quote ---

:lol Yeah that and a slide caliper that's too small to use on this project are about all the precision tools I have.
It could be worse. I once owned a square that wasn't.

External limit switches are the way to go, but just for fun I'm going to elongate my mounting holes and see if I can get it adjusted to work with the built in switches.
Probably won't get around to that for a few days.

--- Quote from: kahlid74 on May 09, 2012, 08:54:27 am ---I'm still concerned about the weight of your 27" monitor and the lazy susan (weight being on a different plane than the LS was intended to work with) but you've got the big dogs of rotating monitors in this thread and if they were worried they'd have said something.

--- End quote ---

While I can't find a rating for the 200mm bearing I bought, the 300mm one (which is actually thinner) is rated for 330lbs.
Of course, this is with the force being applied straight down. The races are flush, neither side is labeled as top or bottom, and everything appears symetrical, so I'd assume it's rated for that weight in either direction.
The monitor is only 14lb and will be tilted backwards, so I doubt the bearing is anywhere near its limits.

I didn't like that the stamped lazy susan bearings at the hardware store were only held together by the stamped sides, which is fine if they're mounted horizontally and the weight is pushing straight down. If there is force pulling up on one side (away from the bearings), then the stamped joint which doesn't have any bearings is taking part of the weight.

This bearing is held together by the ball bearings themselves and the weight is on the ball bearings no matter what direction it's coming from.
Since it's symetrical and can take the same amount of weight on either side, I doubt it matters much which direction the weight is coming from.

Navigation

 Message Index

Go to full version