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  #31  
Old 06-04-2019, 10:46 PM
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I made some real progress tonight, it's starting to come together. I'm basically following the Estes plans. I epoxied all 6 fins on. I took my time I did them one at a time to make sure they went on straight, which was easy, as Leo did an excellent job on getting the curvature to match the body tube. I made sure to work the epoxy into the holes I drilled and I roughed up the back of the fin pads with sandpaper to further help with adhesion. I also tried to keep the amount of epoxy I used low making sure to get a nice even thin coat that wouldn't ooze out.
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  #32  
Old 06-05-2019, 10:45 AM
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Man, that is so cool. Looking good!
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  #33  
Old 06-05-2019, 09:23 PM
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Use tape to hold the cable covers in place while the glue dries.
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"You know, it, uh, won't fly unless somebody pushes the button." From the movie October Sky.

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  #34  
Old 08-04-2019, 10:55 PM
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I finished it tonight. I used vinyl stickers from Stickershock. Of course after I got all the stickers on I realized I forgot to paint the top of the nose white. Doh! But that's okay. I might spray is with some dull coat to make the decals not so shiny, or a may just leave it alone. Turned out just fine the way it is as far as I'm concerned
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"You know, it, uh, won't fly unless somebody pushes the button." From the movie October Sky.

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  #35  
Old 08-11-2019, 08:50 AM
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Looks Great, Tim! What did the final weight come in at?
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  #36  
Old 08-22-2019, 02:07 PM
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Yes, it does look great! What slicer software did you use? Thanks.
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  #37  
Old 09-19-2019, 10:19 AM
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Quote:
Originally Posted by PaulK
Looks Great, Tim! What did the final weight come in at?


Sorry for the delay, school started up and that's a busy time of year for my work.

A whopping 535 grams. As I got further into the assembly it became apparent it was going to be significantly heavier than I expected, so I did switch gears on the engine mount. Luckily I was able to cut out the 24 mm mount without too much trouble and replace it with a 29mm mount. I didn't go crazy with epoxy gluing the fins on, only one coat of paint, no primer. Still came out 535 grams. I know if I had to do it again, the conduits and charge retainers would be balsa and card stock, and based on my experience with the TLP kit, making balsa fins was not that hard. I'd likely just print the nose cone, which really came out awesome, and call it a day.
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"You know, it, uh, won't fly unless somebody pushes the button." From the movie October Sky.

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  #38  
Old 09-19-2019, 10:20 AM
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Quote:
Originally Posted by Quasar
Yes, it does look great! What slicer software did you use? Thanks.

Ultimaker Cura
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Tim

"You know, it, uh, won't fly unless somebody pushes the button." From the movie October Sky.

I am SAM # 0167
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  #39  
Old 09-22-2019, 07:17 PM
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Launched it today on a 29mm Econojet F42-4T. Perfect flight and recovery! 4 second delay was just right. Used two 24 inch chutes.
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"You know, it, uh, won't fly unless somebody pushes the button." From the movie October Sky.

I am SAM # 0167
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Last edited by timorley : 09-22-2019 at 08:00 PM.
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  #40  
Old 09-23-2019, 06:11 PM
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Tim-

Nice series of launch photos...I know you were happy to have a good flight.

What altitude do you estimate you got out of the F? That Pershing design, with such relatively small fins for hobby rockets, always seems like they should just penwheel right off the launch rod. Did you get any ‘tail wag’ on it as it headed up?


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