Fill Adapter

The fill adapter for the tanks can be made from off the shelf components. The fill hose can be obtained from Holley which is one of the listed suppliers in the data pack. There are two types, and the only difference is the color on the fitting, blue or red. The red is supposed to […]

Preheater grain

The preheater grain is required for proper operation of the motor and encourages combustion of the fuel grain. The materials are still produced by Aerotech but you must know what to look for on the RCS website. It is made from a section of Blue Thunder propellant 1 inch long with a 3/8 hole bored […]

Ball valve Option

While awaiting the additional parts for the forward closure I was reviewing some of the Tripoli Facebook comments and one user mentioned a ball valve option. I looked into it and it is possible but the hardest part is acquiring the tank adapter, which I found. I was able to get a 5/8-18 UNF thread […]

Recert Complete

After a long absence, last flight 2006, I was able to renew my Tripoli membership, get my original number, and recertify back to level 2. Level 1 was accomplished in Nov with my scratch built Pershing 1A with 3d printed fins and nosecone on an Aerotech I218R. Level 2 was done Dec 3 with my […]

Pin valve Mods PT III

After drilling out the old pin valve I have cut some stainless 1/16 solid rod for soldering into the pin body. This will allow a higher flow rate by increasing the size of the orifice. After cutting down all that is left is some hand filing to get length close to the original, a new […]