#291  
Old 10-24-2019, 04:35 AM
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brutalbrutus brutalbrutus is offline
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Originally Posted by davetherocketguy View Post

I'm gonna need a bigger motor.

-Dave
Something about this doesn't compute with my image of somebody who is into rocketry... hmm, what can it be?...

Oh, I think I see what the problem is. This...

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For some reason I see your reaction to needing a bigger motor more like this...






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  #292  
Old 10-24-2019, 11:49 AM
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davetherocketguy davetherocketguy is online now
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For some reason I see your reaction to needing a bigger motor more like this...
Weeeeeellll...Kinda. Thing is, this launch in Tab will not have a rocket motor vendor attending so I have order motors and have them shipped which adds a fair bit of $$ to the cost. Plus that I140 was soooooo perfect for the old version finding another that's as well suited for this new version is a bit of a PITA and makes me a bit needlessly nervous.

Doesn't really matter one way or another I'm going to have to order a motor no matter what because I don't have anything in stock that will work for the FBD&D.

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  #293  
Old 10-24-2019, 09:12 PM
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So I got a really important component in the mail today...the chute! This 70" beauty is only 3.1 OZ and packs to something about half again as big as can of beer. I had no idea this was going to be soooooo light.

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  #294  
Old 10-24-2019, 11:16 PM
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More progress tonight. Lots of RocketPoxy used - again. The lower basket assembly is now basically finished. The stopper plate on the main tube is glued in place. Now let it all sit overnight to cure. The stopper plate is what the lower basket will rest on during flight.
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  #295  
Old 10-28-2019, 03:11 PM
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So I’ve started a process I knew was coming at some point. It’s pretty obvious that FBD&D v. 3.0 is not flying again. There are parts that are useful to other project and in particular for b. 4.0. So the scavenging has begun. The useful bits have been stripped off and now this poor thing.needs to be tossed. It just looks so...sad. This is going to have to be like taking off a band aide - do it quickly. Just stuff it in the trash can and quickly walk the van out to the end of the drive on trash day.

Sigh
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  #296  
Old 10-28-2019, 03:55 PM
ILUVSMGS18 ILUVSMGS18 is online now
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Originally Posted by davetherocketguy View Post
So I’ve started a process I knew was coming at some point. It’s pretty obvious that FBD&D v. 3.0 is not flying again. There are parts that are useful to other project and in particular for b. 4.0. So the scavenging has begun. The useful bits have been stripped off and now this poor thing.needs to be tossed. It just looks so...sad. This is going to have to be like taking off a band aide - do it quickly. Just stuff it in the trash can and quickly walk the van out to the end of the drive on trash day.

Sigh
You could turn it into a decoration, and give it away at a tourney. Better than just throwing it away IMO.
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  #297  
Old 10-28-2019, 03:58 PM
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You could turn it into a decoration, and give it away at a tourney. Better than just throwing it away IMO.
You really think someone would want that?

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  #298  
Old 10-28-2019, 05:09 PM
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You really think someone would want that?
I think I'll let someone else have it.....

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  #299  
Old 10-28-2019, 05:14 PM
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Tell you what...If someone claims it between now and tomorrow morning who is willing to p/u from my house I'll hang on to it for a week or two. Otherwise it's hasta la vista baby.
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  #300  
Old 10-29-2019, 06:45 AM
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So important testing last night. In the first picture is my set up to test the stresses on the lower basket stopper plate. Loaded up 2 buckets with a little over 5 gallons total between the 2 of them and put them in the basket. In the second picture you see the stopper plate glued to the green center tube and I just want to make sure it's going to hold up to to the flight stresses of the lower basket assembly resting on it. So the average thrust is going to be around 10:1 or roughly 10g's of force for 1.4 seconds. This part of the basket weighs in at 52 or so ounces so ten times that is 520 ounces or 32.5 lbs and since water is 8.33 lbs/gallon thats about 3.9 gallons. The two buckets were placed like this for a little over 4 seconds and nothing happened - thank goodness. So now I know this needs no extra reinforcement and anything I do from this point to that plate is just bonus strength.

The last picture is what $50 of propellant looks like and FINALLY some prints I ordered from LDRS came in the mail. Yay!
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