- Joined
- Jul 15, 2015
- Messages
- 3,958
- Reaction score
- 2,720
So, some dummy head figured that it would be cool to make a new booster section to one of his 3" rockets, this time using a 38mm motor mount instead of a 29mm. Same dummy head bought and installed 1/8 5ply fins. In fact, he got all the way through putting in very nice 4500 fillets before deciding to look at other similar 38mm motor mount rockets.
Uh oh! :y: Most of them come with 1/4" fins.
Then, after consulting FinSim, the dummy head decided that tip to tip fiberglassing was the answer to possible/probable fin flutter and durability.
Everything is in place on the table: West systems 105/206, 2oz and 5 oz fiberglass cloth, peel ply, gloves, mixing sticks, brushes, etc.
Trouble is, dummy head has no idea how many layers of each cloth are appropriate?
I was thinking one layer of 5 and a veil layer of 2? Would this be enough or too much?
Is there a science to this or is it experience and SWAG?
Uh oh! :y: Most of them come with 1/4" fins.
Then, after consulting FinSim, the dummy head decided that tip to tip fiberglassing was the answer to possible/probable fin flutter and durability.
Everything is in place on the table: West systems 105/206, 2oz and 5 oz fiberglass cloth, peel ply, gloves, mixing sticks, brushes, etc.
Trouble is, dummy head has no idea how many layers of each cloth are appropriate?
I was thinking one layer of 5 and a veil layer of 2? Would this be enough or too much?
Is there a science to this or is it experience and SWAG?
Last edited: