afadeev said: said:Are you asking about conical paper shrouds, or plastic wraps?
The Paper Shroud. I attempted to get the shroud over the coupler, but the glue grabbed at the top of the shroud, and the paper had become "wet" by the glue, so moving the shroud = tearing the shroud.
It's even simpler then that - without enough of a "lip" created by paper shroud + plastic wrap, the forward end / "3rd stage" of the rocket would just slide down into the main airframe.I think the main reasons for the conical paper wraps are:
- To look like the real Saturn V.
- To aid aerodynamics (like the real Saturn V).
- To give some strengthening, which is possibly more of a vibrational dampening effect than straight structural.
I realize that - I was attempting to use the same terminology in the instructions
Did you use pencil mark indexing while trial fitting these plastic pieces to the rocket tube for alignment prior to final attachment?
A few thoughts:The care and detail you’re putting into your build is impressive... and intimidating. I’m getting scared to start mine.
I have an April deadline for Discovery Days at our 4H Rocket Club though, so I’ll likely be using this thread as secondary instructions.
Ive been following your build and just want to say great job. Im at the same point with my build (kit #1969). Only thing I did different from the instructions is instead of spray adhesive, I used Gorilla Wood Glue on the wraps. I found there is a little time to adjust the final position of the wrap with the wood glue. Now Im at the point of attaching fins and farings and I am waiting to see how you are going to do yours. Im worried about popping fins off on landings or at the very least crushing the thin plastic fairings. It all seems so fragile at the base of the rocket.
I have read that when dry, white glue is as strong as yellow (wood) glue. Just that it takes much longer to "grab" and dry. So it's a better choice for paper shrouds, especially. If you had tried to slide that shroud down with your fingernail using yellow glue, it probably would have resulted in a disaster.Something that I had forgotten, is that most (not all) Estes rockets are designed to use white glue for construction.
The 'yellow' wood glues (such as Titebond) can be a little 'heavy' on the paper and tubes used to construct Estes rockets. In other words, the wood glues can sometimes cause model rocket components to deform, especially if too much yellow glue is used.
I have wondered if the best glue for constructing this model is simple Elmer's white glue.
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SO was it worth the money to buy this Model? I was wondering if i could purchase one.
What would be its max altitude with those engines?
Yes, it is actually quite a bit of model for the money. But I would recommend the newer release [a re-release of #1969] over this model [#2157, roughly 10 years old].
The new #1969 has injection molded fins, which means they are completely formed (I think). Hence easier to assemble, and sturdier.
The Estes website lists the altitude with a E30-4 motor of 350 feet. It recommends a E12-4 for first launch.
At some point, I plan to purchase an altimeter to check this model.
It looks like you have an older version of #2157 with vacuform fins. Later production runs of the #2157 kit came with injection molded fins, which are much easier to put together and, from what I’ve read in this forum, hold up much better in flight. Mine came with the newer fins, and they have held up well. You can order a set of those fins from Estes. https://www.estesrockets.com/073156-saturn-v-plastic-finsStarting work on the fins.
Man, I really, really, really considered making these out of balsa wood or plywood. Or purchasing some aftermarket fins.
But, to stay true to the project, I will use what I have.
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