Austech  


Go Back   Austech > Technology > General Science
Register Forum RulesiTrader Mark Forums Read

General Science Chemistry, Astronomy, Geology, Biology and Physics

Reply
 
LinkBack (1) Thread Tools Display Modes
Old 23-06-09, 02:08 AM   #41 (permalink)
Country member
 
Onefella's Avatar
 
Join Date: Jan 2008
Location: Top End
Posts: 351
Thanks: 42
Thanked 74 Times in 37 Posts
Rep Power: 13
Onefella is just really niceOnefella is just really niceOnefella is just really niceOnefella is just really nice
Default

This is my old faithful Marksman fold-up with new "hard-pull" rubbers from the 'states. Good for demonstrations like putting a 8mm ball-bearing through one side of a galvanised rubbish bin. But my accuracy is crap on the big 'power' shots.




This is my home made copy that's very light and (for me) accurate.




I've noticed that the locally available Marksman 'non-braced' slingshot is exactly the same grip as the U.S. braced models. All you would need to do is drill out the epoxy plugs and bend up a wrist brace similar to the one in my picture.

You put the rubbers on with alcohol and let them stand for 24hrs.
Onefella is offline   Reply With Quote
The Following User Says Thank You to Onefella For This Useful Post:
ggibson (23-06-09)
Old 23-06-09, 10:52 AM   #42
Junior Member
 
Join Date: Jun 2009
Age: 47
Posts: 15
Thanks: 4
Thanked 1 Time in 1 Post
Rep Power: 0
ggibson is on a distinguished road
Default

Quote:
Originally Posted by Onefella View Post
This is my home made copy that's very light and (for me) accurate.
Excellent work.
You have inspired me to have a go at making one myself.
Just wondering if you could tell me the diameter of the steel wire, used in the frame ?
(It looks about the same as the Marksmen wire frame)
ggibson is offline   Reply With Quote
Old 23-06-09, 11:51 AM   #43
Country member
 
Onefella's Avatar
 
Join Date: Jan 2008
Location: Top End
Posts: 351
Thanks: 42
Thanked 74 Times in 37 Posts
Rep Power: 13
Onefella is just really niceOnefella is just really niceOnefella is just really niceOnefella is just really nice
Default

Quote:
Originally Posted by ggibson View Post
Excellent work.
You have inspired me to have a go at making one myself.
Just wondering if you could tell me the diameter of the steel wire, used in the frame ?
(It looks about the same as the Marksmen wire frame)
The wire is 5mm stainless, a bit hard to bend, but very strong and light. The handle is 15mm SS pipe and the wrist cushion is 6mm rubber fuel line. The rubber is a Truemark 'standard pull' from the USA. I'm going to fill the handle with Sikaflex rubber one day to make it all a bit more solid.

Let us know how you go.
Onefella is offline   Reply With Quote
The Following User Says Thank You to Onefella For This Useful Post:
ggibson (23-06-09)
Old 23-06-09, 01:17 PM   #44
Junior Member
 
Join Date: Jun 2009
Age: 47
Posts: 15
Thanks: 4
Thanked 1 Time in 1 Post
Rep Power: 0
ggibson is on a distinguished road
Default

Quote:
Originally Posted by Onefella View Post
Let us know how you go.
Thanks for those details.
I will certainly post, if I get one made.
ggibson is offline   Reply With Quote
Old 23-06-09, 11:55 PM   #45
Premium Member
 
Godzilla's Avatar
 
Join Date: Jul 2008
Location: Melbourne
Age: 46
Posts: 5,125
Thanks: 2,409
Thanked 1,137 Times in 679 Posts
Rep Power: 148
Godzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond repute
Default

Im also wondering as Trash was...i also could have sworn id seen the rubbers at a local gun store.
__________________
Standard and Performance car parts at discounted prices .
Website http://www.performancecarpartsonline.com.au
Ebay Performance Car Parts Online
Godzilla is offline   Reply With Quote
Old 24-06-09, 10:46 AM   #46
Junior Member
 
Join Date: Jun 2009
Age: 47
Posts: 15
Thanks: 4
Thanked 1 Time in 1 Post
Rep Power: 0
ggibson is on a distinguished road
Default

Quote:
Originally Posted by Godzilla View Post
Im also wondering as Trash was...i also could have sworn id seen the rubbers at a local gun store.
You probably did.
Here is another online Australian store (as well as Camping-r-us), that sells the whole slingshots and rubbers.


But they also have physical real stores, in queensland (seems to be the most legal there)

SLACKS CREEK
25 MOSS STREET, 4127, QLD

SALISBURY
672 BEAUDESERT ROAD

CAPALABA
"NEW STORE NOW OPEN"
87 REDLAND BAY ROAD

Last edited by ggibson; 24-06-09 at 10:47 AM.
ggibson is offline   Reply With Quote
Old 17-07-09, 05:38 PM   #47
Who let the smoke out!
 
iwacelect's Avatar
 
Join Date: Jan 2008
Posts: 1,506
Thanks: 211
Thanked 233 Times in 163 Posts
Rep Power: 41
iwacelect is a splendid one to beholdiwacelect is a splendid one to beholdiwacelect is a splendid one to beholdiwacelect is a splendid one to beholdiwacelect is a splendid one to beholdiwacelect is a splendid one to beholdiwacelect is a splendid one to behold
Default

just a mechanical question, shouldn't the arm brace go over the wrist, not under as this thing looks, or am i missing the fact it has a velco strap over the arm????

because the one in the photo, if you hold the grip and pull the force will pull the brace AWAY from the forearm, the awsome i've SEEN has a brace coming out from the grip at the top and goes down the arm ON TOP, so as you pull harder the force of the "Y" being pulled back is dissapated through the brace onto the top of the arm..

with this arrangement i've HEARD of sinkers going through a 4x2 with EASE!
__________________
When I explained to the guy what avatar I wanted, that wasn't what I meant!
iwacelect is offline   Reply With Quote
Old 18-07-09, 02:07 AM   #48
Junior Member
 
Join Date: Jul 2009
Age: 25
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
rs_shadow0000 is on a distinguished road
Default

The wire is 5mm stainless, a bit harder to bend, but actual able and light. The handle is 15mm SS aqueduct and the wrist beanbag is 6mm elastic ammunition line. The elastic is a Truemark 'standard pull' from the USA. I'm traveling to ample the handle with Sikaflex elastic one day to accomplish it all a bit added solid.

_________________
damn
rs_shadow0000 is offline   Reply With Quote
Old 18-07-09, 01:42 PM   #49
Premium Member
 
Godzilla's Avatar
 
Join Date: Jul 2008
Location: Melbourne
Age: 46
Posts: 5,125
Thanks: 2,409
Thanked 1,137 Times in 679 Posts
Rep Power: 148
Godzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond reputeGodzilla has a reputation beyond repute
Default

I use to built them as a kid, 6 to 8mm SS rod, a blow torch to soften the metal and a vice to hold it while working.

Sometimes id weld a brace across the handle to hold the 2 arms steady, then spray it matt black for that cammo look.

Not hard to do and bloody powerful too.
__________________
Standard and Performance car parts at discounted prices .
Website http://www.performancecarpartsonline.com.au
Ebay Performance Car Parts Online
Godzilla is offline   Reply With Quote
Reply

Bookmarks

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
Trackbacks are On
Pingbacks are On
Refbacks are On


LinkBacks (?)
LinkBack to this Thread: http://www.austech.info/general-science/21131-how-replace-surgical-rubber.html
Posted By For Type Date
Austech - Powered by vBulletin This thread Refback 19-06-09 10:24 PM


All times are GMT +11. The time now is 11:08 AM.


Powered by vBulletin™
Copyright © vBulletin Solutions, Inc. All rights reserved.
Ad Management plugin by RedTyger