Can you see where I am headed with this?

[BoyntonStu]

This is a 48" Aluminum clamp with stops every inch.

The fork is fixed and the Theraband silver tubing will be a single piece coming from underneath and over the pulleys.

The trigger mechanism will be attached to the sliding block.

A foot stirrup may be added to the fork and a pair of draw handles to the trigger to enable a 2 handed draw.

BTW The 48" clamp is on sale for $8.99 at Harbor Freight.

(I removed the fixed clamp end with the screw mechanism)

[Forum Admin]

Looks like a platform for a slingshot "rifle". Would make for a nice compact crosbow type weapon if you used arrows for your projectiles.

[BoyntonStu]

Check it out here:

http://www.spudfiles.com/forums/viewtopic,p,292542.html#292542

Posted 2 down.

[boar]

Stu you come up with the coolist links and have the time to make the time to make projects out of them, i cant help think that you are retired but retired what i cant figure retired teenager maybe clost but you seem to have more smarts than that keep up the good work i enjoy readin your latest and am learnin from your post keep it up you big ol kid with tools

Boar

[BoyntonStu]

My $10 slingshot rifle.

The Aluminum clamp was $8.99 at Harbor Freight.

All the wood was from my scrap pile.

My Chiroprator donated the Theraband.

The little hinge was salvaged from junk.




A very, very simple, trigger mechanism.

Simple to lock the marble in place and very easy to pull.




I tried cocking by using the nylon rope as a stirrup from which to pull at first.  Later,  I discovered that if I push the mechanism down to the ground it is much easier.  I could also use a ledge to step on for the last heavy push.

[Forum Admin]

Very creative use of materials. Have you chronographed it yet? I'll bet with some minor modifications it would shoot arrows nicely as well (hint, hint).  I think with the right set of bands something like this could be similar to a crossbow without the bulk and expense.

[BoyntonStu]

Using a 48" Aluminum clamp from Harbor Freight as a base a fork and a very simple trigger mechanism was installed.

The Aluminum channel will allow a very strong rubber to be pulled with 100 pounds of force without bending.

It can be locked in one inch increments.


http://www.youtube.com/watch?v=4RN93DQBn2E

[boar]

pretty cool deal realy clever trigger

Boar