Bruiser
Well-Known Member
- Joined
- Jun 7, 2018
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I am officially starting my Doorknob build. It's been sitting on the back burner while I worked thru picking out the electronics for such a rocket as this will be my first two-stage "composite motor powered" rocket. This may take some time, so please bare with me and maybe once in the while throw in a "you go Bob" to help keep me moving forward. I tend to flounder a bit with stuff I haven't done before so some encouragement may be needed
I decided to start with the hard part first, the booster. Of course it's a scratch built booster and it is based on Mr. Alway's drawings, along with the few photos there are of the two stage Doorknobs. BTW, if you have more pictures of this rocket, please share them here
So, back to the body tube. Oh, I should say this is all based on the Estes Pro Series Doorknob kit so the body tube is 3 inches. I cut it to the correct length then I marked the fin openings, the 12 openings in the fin can with a gel pen. Came out really sweet looking. Oh, I should state now that the body tube weighed 2.29 ounces. Next I started the quasi glass process. One leg of Sheer Energy hose, two coats of water based poly, light sanding, coat of Z-poxy, light sanding, second coat of Z-poxy, another sanding, 3rd coat of Z-poxy and one more light sanding. It came out super smooth and it now weighs 3.08 ounces.
Remember those markings I put on with the gel pen? Well they got very blurry after the first application of water based poly I ended up marking them all over again on the other end of the tube.
More to come,
-Bob
I decided to start with the hard part first, the booster. Of course it's a scratch built booster and it is based on Mr. Alway's drawings, along with the few photos there are of the two stage Doorknobs. BTW, if you have more pictures of this rocket, please share them here
So, back to the body tube. Oh, I should say this is all based on the Estes Pro Series Doorknob kit so the body tube is 3 inches. I cut it to the correct length then I marked the fin openings, the 12 openings in the fin can with a gel pen. Came out really sweet looking. Oh, I should state now that the body tube weighed 2.29 ounces. Next I started the quasi glass process. One leg of Sheer Energy hose, two coats of water based poly, light sanding, coat of Z-poxy, light sanding, second coat of Z-poxy, another sanding, 3rd coat of Z-poxy and one more light sanding. It came out super smooth and it now weighs 3.08 ounces.
Remember those markings I put on with the gel pen? Well they got very blurry after the first application of water based poly I ended up marking them all over again on the other end of the tube.
More to come,
-Bob