I wasn't real happy with the deployment velocities that RockSim spit out for the 1.00X Chuter-Two, so I *didn't* leave well enough alone and I upscaled it from ST-8 to ST-13.

I left the fin thickness at 3/32" balsa, and I also used thinner fin reinforcements (1/16" instead of 3/32"), and put them on *both* sides of the fins. (As with my first attempt at this design, there's only one parachute in this one. )

The performances (and deployment velocities) on the standard motors are *much* better (i.e., kinder and gentler) on this 1.48X upscale than on the original version.


And I have to issue my usual parts disclaimer: The BC-1371 nose cone is *not* available from Semroc. At least not *yet.*

(For those who *insist* on knowing, the ST-13118 is 11.75" long.)

.

Attached Thumbnails

   

Attached Files

Chuter-Two_148X.rkt (69.8 KB, 87 views)

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

My experience with the original 1.00X and 1.48X Centuri "Chuter-Two" designs is proof positive of that.


Okay, I guess that makes two more, with the two "Chuter-Twos." (Provided that I can even count correctly. )


Cheers,

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

And I need to get those posted to the list, Jay. Among other projects, I've done a nasty thing this weekend...

I installed Windows Vista Ultimate on my primary computer...

How many humans does it take to activate ONE copy of Windows Vista?

EIGHT! Along with THREE Product Keys!

Me, the DirectDeals sales rep, his Microsoft Tech rep (who provided the first replacement key), and FIVE Activation Service reps somewhere near Bombay who passed me around from one to the next like the proverbial hot potato (including one supervisor that I did not speak directly with, who provided the second replacement key).

Any wonder why Microsoft is releasing a new version of Windows sometime next year? Called simply Windows 7?

Short story long, I'm not running RockSim right now, and probably won't have it back up for awhile. So, you kids will have to make up the remaining designs between yourselves! I'm expecting the full 500 from you before December 31!

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Jay, how about running another sim for the list. Try working up an ST-7 downscale of the Chuter-II, with 13mm motors for power. I'm always looking for 13mm ideas for the "Schoolyard Sounders" program, as I think these will prove to be well suited for smaller school fields.

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So WHY did you install Vista?

The only "good" reason I've seen so far is gaming. Not good enough for me, and I sell the dang things. We've sold very little Vista so far (though, of course, the XP systems we are delivering now have Vista licenses on them).

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NAR # 115523
Once upon a better day... SAM #0076
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Mostly for the pain. I like having holes bored into my skull, wild birds pecking out my brain, and having my teeth yanked out without Novocaine.

(There's a new quote for Bill's tagline... )

Vista has a bad rap sheet, and the "activation" issue is just one of many reasons why. Getting drivers to function properly is another.

Actually, in my case, my mom bought a laptop with Vista on it, and I figured I needed to learn the ins and outs of the OS so that I could maintain it. Vista does have some good points. It installs much easier, meaning the process of putting it on the computer is smoother and less painful than previous versions. It found everything on my system except the sound driver, and even that was quickly resolved. I also had to do something on my XP installation, as I had run out of disk space on the "C" partition, and it was affecting performance. This gave me a good opportunity to slide in a 500 GB drive, and put the old 300 GB drive into an external case.

Vista adds a feature that I could have used on XP - being able to expand or contract dynamic partitions without damaging the data. You can also take those external (or internal) slave drives and use some of the unallocated space from them to pad the size of a dynamic partition.

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Basically, you're a masochist.

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NAR # 115523
Once upon a better day... SAM #0076
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Craig,

As an intermediate step (since the original 18mm Chuter-Two seemed *really* overpowered), here's a 13mm mount plugged into the ST-8 1.00X version. The deployment velocity times are a good deal more manageable, although the 1/2A and A10 are still ~20 f.p.s. (although that's a whole lot better than *~30* f.p.s.! ).

.

Attached Thumbnails

   

Attached Files

Chuter-Two_13mm.rkt (56.9 KB, 91 views)

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

"As you wish."

The ST-768 is 6.75" long.


(I think maybe I can stop obsessing over this design. Just watch, next week it'll be Something Completely Different. )

.

Attached Thumbnails

   

Attached Files

Chuter-Two_084X.rkt (56.6 KB, 78 views)

__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131


"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. "

--Bill Eichelberger, 02/22/2022


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

Sure you will...

You'll work up ST-13, ST-16, ST-18 and ST-20 versions of this design, just so you can have an entire family of Chuter-II's. The -18 and -20 versions might even be clusters, just to be obstinate and ornery.

I thought the original -8 version would do well with 13mm power, but I didn't expect it to do as well as the simulation predicted on the 1/2A3-4T. Thanks for the two runs. This gives us two more designs (a modified original, and the ST-7 version) to add to the list.

Now, let's see, where does that put us in terms of the 500 target?

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