You are Unregistered, please register to use all of the features of The Slingshot Forum!    


Slingshot Forum - The Slingshot Channel Official Forum > The Slingshot Channel Videos > Slingshot Crossbows >

New ,,


Reply
 
LinkBack Thread Tools
Old 07-01-2016, 06:18 PM   #1
An_Zombie
Junior Member
 
Join Date: Jun 2016
Posts: 5
Default New "compound" crossbow attempt looking for suggestions

First post and first serious attempt at making a crossbow. Not sure if this counts a a slingshot but I figgured you guys are the people to ask. Recently started working on an idea for a small width pulley crossbow. Just wondering if anyone has ideas for improvements. I have the bones of it complete with a working trigger but I'm not sure how to make the arms move in unison to keep the shot straight. Any thoughts would be appreciated.image.jpg



Last edited by An_Zombie; 07-01-2016 at 07:11 PM. Reason: Acidentaly hit post too early
An_Zombie is offline  
 
Reply With Quote
Old 07-01-2016, 11:21 PM   #2
bigdh2000
Administrator
TSF_ADMIN.png
 
bigdh2000's Avatar
Slingshots
 
Join Date: Mar 2014
Posts: 10,801
Liked 9000 Times on 5167 Posts
Likes Given: 1823

Default

Nice work.


__________________
Dan Hood

“All men make mistakes, but married men find out about them sooner.” - Red Skelton
bigdh2000 is offline  
 
Reply With Quote
Old 07-01-2016, 11:42 PM   #3
Daedric-Panther
Senior Member
 
Daedric-Panther's Avatar
 
Join Date: Apr 2014
Location: California
Posts: 816
Liked 342 Times on 234 Posts
Likes Given: 214

Default

What type of trigger system did you use?
__________________
From my cold, dead hands.
Daedric-Panther is offline  
 
Reply With Quote
Old 07-02-2016, 05:24 PM   #4
An_Zombie
Junior Member
 
Join Date: Jun 2016
Posts: 5
Default

image.jpg
It's fairly simple but it has a very nice break
An_Zombie is offline  
 
Reply With Quote
Old 07-02-2016, 05:26 PM   #5
An_Zombie
Junior Member
 
Join Date: Jun 2016
Posts: 5
Default

Oh and that's just to show how it works, normally it's centered in the body of the xbow
An_Zombie is offline  
 
Reply With Quote
Old 07-02-2016, 08:19 PM   #6
Juggalo
My slingshots are like me. They aren't pretty.
TSF_LIFETIMESUPPORTER.png
 
Juggalo's Avatar
 
Join Date: Mar 2016
Location: Herefordshire
Age: 34
Posts: 1,235
Liked 507 Times on 397 Posts
Likes Given: 377

Default

Nice work. If you could somehow attach the springs on each arm directly to its counter part on the other side I think that they should move in unison( at least im fairly sure I've read that somewhere) feel free to correct me if im wrong
__________________
All I know is that I don't know nothing.
Juggalo is offline  
 
Reply With Quote
Old 07-02-2016, 08:27 PM   #7
JonS
Senior Member
 
JonS's Avatar
 
Join Date: Feb 2015
Location: Sweden
Age: 17
Posts: 761
Liked 268 Times on 189 Posts
Likes Given: 287

Default

Cool, but why is there no introduction?
JonS is offline  
 
Reply With Quote
Old 07-02-2016, 09:55 PM   #8
An_Zombie
Junior Member
 
Join Date: Jun 2016
Posts: 5
Default

If your referring to the title "New ,," that was my fault. I'm doing this from my phone and accidentally hit post and can't figure out how to fix it
An_Zombie is offline  
 
Reply With Quote
Old 07-08-2016, 08:39 AM   #9
RalphG
Senior Member
 
Join Date: Jan 2014
Posts: 218
Liked 246 Times on 89 Posts
Likes Given: 16

Default

The simpler solution would be to make an enclosed arrow guide on top. Look how Jörg has done this with some of his rubber launchers.

These "flipper" designs have individual arms which are individually powered, so even slight differences in construction lead to the arms not moving in perfect unison. Thats just a quirk the designer has to overcome by additional means. somehow there has to be a connection/synchronisation of the arms.
Yours looks very similar to robert van Houses design. http://www.freepatentsonline.com/4169456.pdf. Look what he has done to synchronize the arms. some additional connecting bars which meet at the stock and are riding/guided in a groove there would do the trick.
__________________
Gold is for the mistress -- silver for the maid --
Copper for the craftsman cunning at his trade."
"Good!" said the Baron, sitting in his hall,
"But Iron -- Cold Iron -- is master of them all."
RalphG is offline  
 
Reply With Quote
Old 07-10-2016, 08:14 AM   #10
culinariccockroach
Member
 
Join Date: Apr 2016
Age: is increasing every second...
Posts: 431
Liked 100 Times on 83 Posts
Likes Given: 10

Default

empty



Last edited by culinariccockroach; 07-14-2016 at 04:23 PM.
culinariccockroach is offline  
 
Reply With Quote
Reply


Tags
crossbow

Thread Tools

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 On
Trackbacks are Off
Pingbacks are On
Refbacks are On