Scissor hinge question - HauntForum
HauntForum
 
 
 

Go Back   HauntForum > Props and Prop Building > Pneumatics
Forgot Password?

Notices

Pneumatics Forum for all discussions involving pneumatics, and all related devices. Also to include all mechanical design aspects of the pneumatic prop.

Reply
 
Thread Tools Display Modes
  #1  
Old 04-12-2017
Hauntactor Hauntactor is offline
Petrified
 
Join Date: Nov 2016
Posts: 6
Likes: 0
Liked 0 times in 0 posts
Default Scissor hinge question

I've been looking into building a scissor hinge, and the one thing I can't seem to figure out is whether or not to use a single acting or double acting cylinder. Any tips would be appreciated!
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 04-13-2017
diamonddave_k's Avatar
diamonddave_k diamonddave_k is offline
Uneasy
 
Join Date: Nov 2016
Posts: 54
Likes: 1
Liked 2 times in 1 post
Default

Depends on the retracting speed you would like. If you're doing something vertical the mechanism with a single acting should drop fairly quickly on it's own via gravity depending on the weight of your prop and the amount of air released if you are going to control that at all.

Double acting you can control the extension and retraction speed of the cylinder making for a swift motion both ways if that's what you prefer.

I have props with single acting and props with double acting, just depends on what you're going for.

What are the planning on doing with the scissor mechanism?
__________________
Dave Kueng
Reply With Quote
  #3  
Old 04-13-2017
Hauntactor Hauntactor is offline
Petrified
 
Join Date: Nov 2016
Posts: 6
Likes: 0
Liked 0 times in 0 posts
Default

I'm thinking of building a prop of a person in a chair. The person then extends out a few feet.(sorry if I did a bad job at explaining). Also do you know the difference between a nose mount and a universal mount, and which one you would suggest? Thank you!
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old 04-14-2017
diamonddave_k's Avatar
diamonddave_k diamonddave_k is offline
Uneasy
 
Join Date: Nov 2016
Posts: 54
Likes: 1
Liked 2 times in 1 post
Default

Oh ok cool. I would do a universal mount just to give yourself more mounting options and more stability. Are you planning on building the scissor out of aluminum? Steel? Just curious. I've thought of doing something similar but never got around to it. Let us know on your progress as you move along we would all love to see!
__________________
Dave Kueng
Reply With Quote
  #5  
Old 04-14-2017
BillyVanpire's Avatar
BillyVanpire BillyVanpire is offline
Frightener
 
Join Date: Apr 2015
Posts: 502
Likes: 1
Liked 42 times in 21 posts
Default

i would suggest a dbl action cylinder for a horizontal dummy extension.
much more control.

here's one i made
Reply With Quote
  #6  
Old 04-14-2017
Hauntactor Hauntactor is offline
Petrified
 
Join Date: Nov 2016
Posts: 6
Likes: 0
Liked 0 times in 0 posts
Default

Ok thanks guys, I really appreciate the suggestions! I hope to start building this soon(and hope that this isn't another project I never get around to). Thanks again guys!
Reply With Quote
  #7  
Old 05-16-2017
Screaming Demons Screaming Demons is offline
Uneasy
 
Join Date: Jul 2009
Posts: 48
Likes: 2
Liked 0 times in 0 posts
Default

You pretty much have to go with double acting since it probably won't retract by itself, depending on how you mount the cylinder.
Reply With Quote
Reply

Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Quick question Georgeb68 Costumes and Makeup 3 07-08-2013 11:36 PM
2008 Haunt Question tuck Haunt Tactics and Techniques 13 11-23-2010 11:26 PM
quiz show: 1st question fails GothicCandle Off-Topic 1 10-01-2010 03:36 AM
tuning wall warts and amperage question Devils Chariot Technological Terror 24 09-02-2009 11:20 PM
battery question... Sickie Ickie Technological Terror 29 06-14-2008 01:01 AM


All times are GMT -4. The time now is 08:18 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2004 - VerticalScope Inc. | All rights reserved