Engineering members...
Guest
Posts: n/a
RE: Engineering members...
ORIGINAL: Juliet
You serious?? ... Ok schematics are meant to clarify information without all the irrelevant stuff that is not needed .. in fact they may add some elements too to aid in translation :-)
Jules
ORIGINAL: woo545
Translation: Yer.
ORIGINAL: CBRclassic
**** that made my head hurt ...translation please 
ORIGINAL: Juliet
Oh meh, schematics omit details that are not relevant to the idea its trying to show you ;-)
Jules
Oh meh, schematics omit details that are not relevant to the idea its trying to show you ;-)
Jules
Jules
and gee .......
Om always serious Jules ..you know that
hmmm kiddo Guest
Posts: n/a
RE: Engineering members...
ORIGINAL: Pamw
as it should Mate........BWHAHAHAHAHAHAHAHAH........the virus is going to bleed that vile chemical out of yous......can't have yas turnin into knuckle draggers...we need ya to be able to clean up at least half decent when we need ya.....
as it should Mate........BWHAHAHAHAHAHAHAHAH........the virus is going to bleed that vile chemical out of yous......can't have yas turnin into knuckle draggers...we need ya to be able to clean up at least half decent when we need ya.....
Sounds like we at least may be needed for something
Knowing you girlies
...probably lab experiments or something equally as nasty ?? 
RE: Engineering members...
wtf? is this thread about..i read a little bit and it made sense..skipped a page or 2 and then..what?
alls i hear is pirate talk.
yarrrrr
[8D][>:]
Dont do this to me. 25mg of oxycodone every 4 hours. i cant follow this crap!
alls i hear is pirate talk.
yarrrrr
[8D][>:] Dont do this to me. 25mg of oxycodone every 4 hours. i cant follow this crap!
Guest
Posts: n/a
RE: Engineering members...
ORIGINAL: jdschmidt
wtf? is this thread about..i read a little bit and it made sense..skipped a page or 2 and then..what?
alls i hear is pirate talk.
yarrrrr[8D][>:]
Dont do this to me. 25mg of oxycodone every 4 hours. i cant follow this crap!
wtf? is this thread about..i read a little bit and it made sense..skipped a page or 2 and then..what?
alls i hear is pirate talk.
yarrrrr
[8D][>:] Dont do this to me. 25mg of oxycodone every 4 hours. i cant follow this crap!
no drugs here mate
yu just gotta get with the program man
Guest
Posts: n/a
RE: Engineering members...
ORIGINAL: Pamw
hmmm....lab experiement??......very interesting. Oh jules.......hun??.....he said lab experiment......
hmmm....lab experiement??......very interesting. Oh jules.......hun??.....he said lab experiment......
Anything yu naught , nasty little girlies can dream up .... yer including all the pokin an probin and stickin thingies in paces that will make me possible get all weird
for at least a few seconds !!!!
Pam... get yu mind outta the gutter!!! ....
I am down their already and it is not worth it missy
yu might all wet ???
hmmm.... ( as the Mods come crashing in to delete my *** )
Senior Member
Joined: Apr 2008
Posts: 2,492
Likes: 0
From: Northern Michigan
RE: Engineering members...
wow, this one really got off topic......
to get back to his question. I think your thought process is good and your thinking in the right direction. trying to make something better and more versitle. But,
I thinkusing ball screws in an area where heat is present wont work. I know they are stainless steel, but steel expands. The tolerance on the screw and ***** are so tight, any increase in size due to heat will result in lock up. You also have to worry about the quickness of them. Servo motors are not very fast. On an engine, as the rpms go up, so does the cycle rate of the valves. A ball screw changing directions that fast that many times will likely over heat on its own, let alone from engine heat. There just isn't anywhere for the heat to go.
I think you would be better off using just a magneticdriven servo with a spring loaded return. When they are powered up, the internal shaft is driven to the full extent of the servo. Have a manual adjustment for stroke, like an adjustable hard stop you could leave these external of the valve cover for easier adjustment. they could also run off a crank angle sensor. And, being magnetic and spring driven, they would be very fast to open and close.
I think most instructors are going to look a lot of different things for your final project. even if the idea isnt practicle, as long as you instill the lessons youve learned and explained why things are the way they are, you should be fine.
But, most of the time, the simplier you keep it, the better of you will be.
to get back to his question. I think your thought process is good and your thinking in the right direction. trying to make something better and more versitle. But,
I thinkusing ball screws in an area where heat is present wont work. I know they are stainless steel, but steel expands. The tolerance on the screw and ***** are so tight, any increase in size due to heat will result in lock up. You also have to worry about the quickness of them. Servo motors are not very fast. On an engine, as the rpms go up, so does the cycle rate of the valves. A ball screw changing directions that fast that many times will likely over heat on its own, let alone from engine heat. There just isn't anywhere for the heat to go.
I think you would be better off using just a magneticdriven servo with a spring loaded return. When they are powered up, the internal shaft is driven to the full extent of the servo. Have a manual adjustment for stroke, like an adjustable hard stop you could leave these external of the valve cover for easier adjustment. they could also run off a crank angle sensor. And, being magnetic and spring driven, they would be very fast to open and close.
I think most instructors are going to look a lot of different things for your final project. even if the idea isnt practicle, as long as you instill the lessons youve learned and explained why things are the way they are, you should be fine.
But, most of the time, the simplier you keep it, the better of you will be.