Really nice work...you definitely have excellent modeling skills!
Really nice work...you definitely have excellent modeling skills!
SHAZAM! Somehow, I never saw the fin installation segment till now.Most impressive. And you'll have better fin fillets than I do for sure. Should I EVER have to or want to do another one of these, I'm stealing some of your ideas.
That's right! Just you keep weighing this thing down with all your hot dawg modifications and such. By the time you get done with it, you'll need a G80 just to get it off the pad! :rofl: jk
That's bound to be a sturdy shroud. Can't imagine why you felt it necessary to make it that durable though. There's no real stress associated with that shroud. A bit of a wind breaker of sorts.
Whatever works, right? I was thinking about "card stock" and was wondering, is a manila folder too heavy for this use?
That's really heavy, I suspect it'd be very difficult to get it to bend cleanly.
Hmm... Perhaps then the card stock used by Estes for their face cards?
Also, if you're concerned that a single layer would need underlying support, aren't you then adding weight?
OK, you've kind of talked me into just going with the single layer shroud... although I'm not really convinced that the double shroud is bad overkill per se. It is shockingly strong and really not so heavy (I will weight it when I get home, just to see how much difference it makes.)
Hey, if you think the weight is negligible, tell me to go jump in a lake. Far be it from me to dictate how you should build this bird. You're already doing a better job than I did.
My handy-dandy AWS scale says:
One last opinion to solicit on this matter: if I were to use the support fins (which are just simple triangles to fit under the shroud), should I put them directly under the strakes, so the shroud will be tightly sandwiched between them, or offset them by 45 degrees from the strakes, so they'll provide support in between? I can think of reasons to do it either way. Ultimately it's probably six of one, half a dozen of the other, but I'm still trying to reason out whether one way would be superior to the other (and all will be moot if I end up going with a double shroud, which is still a good possibility). My objective as always is provided good support so I can safely sand the primer without ruining it.
- Single layer shroud weighs 1.3g
- Double layer shroud weighs 2.7g (not too surprising)
- Support fins weigh a total of 0.6g (balsa is light )
Thank you all for playing along at home.
In fact I've been generally curious about the contribution of glue to the weight of the finished model. When my builds come out heavier than anticipated (which is basically always, I'm sure you're surprised to hear that ), I have to assume that unaccounted glue weight has to be the most significant factor. Fillets are presumably the biggest culprit, but all glue must be contributing to some extent. I'd like to get a better handle on it, if for no other reason than to be able to improve the accuracy of my OR models.Not trying to play "Devil's Advocate" here, but consider the weight of the glue required to glue in all those balsa wood supports also. :wink:
No problem, just keep in mind:Neil, I apologize for sounding off at you earlier. But it was reasonable for me to point out an unnecessary application. Since I’ve already built two of these, you might think I’d know a thing or two about it.
I used 110# cardstock for that forward shroud (having reviewed my own build thread) and didn’t experience any problems sanding the primer. Contrary to earlier comments, I used CA to strengthen the entire forward shroud up, and was quite pleased at how rigid it was.In that case it would seem to me (unless I'm reading this wrong) that a doubled 65 lb paper shroud is a reasonable equivalent to a CA'ed 110 lb paper shroud, no?
Internal bracing could present a problem if you thought about gluing them to the underside of the shroud. You could easily end up with ripples once the glue dries.
Originally I intended to glue them, but did eventually realize that it was a bad idea for that exact reason. The braces shall not be glued.
And for what it's worth, I forgive you for being an overkill commando. :grin:
HAHAHA! Man, somehow I can't design a rocket without sticking a transition on it somewhere. I do have a few, but they look ordinary. The Lander is by far, one for the books. Transitions from hell! But the more you make, the better you get at them. I love it when I nail the perfect fit. And that happens about 50% of the time. I can deal with a little overlapping or too snug to the tube. Those can be altered and fixed. It's the undersized fit that pisses in my cornflakes. That constitutes a re-do. Keep up the good work.And I forgive *you* for having built 10x as many rockets as I have.
Anyway, I'm having good results with my latest round of shrouds. Will report soon on that, along with other build updates.
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