Release Pin:
$25.00 (+$5 s&h)
Buy with PayPal
(no account required)
Release Pin:


- 3/8" steel release pin for use on a large trebuchet
- Designed to accurately calibrate repeat launches
- Easy to install, easy to adjust
- Custom designed by Oakland Ballistics

How to use the release pin:
You will need to attach the pivot hole to your throwing arm. The hole is ½” wide. Next you will need to attach a turnbuckle to the push/pull hole, again the hole is ½”. This will allow for very small, precise adjustments. You will then attach the other end of the turnbuckle and you are done. We have used this to launch 8 lb projectiles 900 ft. We cannot guarantee the breaking point of this but it is laser cut out of 3/8” steel.

+ Click here to see the release pin next to a hammer to get a sense of the item's scale
+ Click here to see the release pin attached to the end of our largest trebuchet
+ Click here to see the release pin attached to the end of our medium trebuchet
 + Contact us with any questions.
Distributors: We have discounted pricing available for bulk-order distributors. If you would like to sell our products at your store, contact us for more information. We currently have a few toy store distributors in Michigan, and we welcome new distributors. Special pricing is available for schools and scout troops as well.
Home - Pictures - Videos - Store - Downlolads - Blog - Learn How - About Us - Our Designs - Contact Us - Links - Sponsors - In the News

Everything Trebuchet. Trebuchets for sale, trebuchet research, links to trebuchet teams, links to trebuchet engineering tools, mini trebuchet for sale, trebuchet kit for sale, tennis ball trebuchet for sale, Lego trebuchet, huge trebuchet, trebuchet pictures and videos, instructions of how to build a trebuchet, and news about pumpkin launching competitions. Oakland Ballistics is a team of trebuchet engineers.