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  #271  
Old 03-25-2006, 10:23 PM
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CPMcGraw CPMcGraw is offline
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Quote:
Originally Posted by tbzep
That looks good but it looks way too long for scale. Hang on and let me do some figuring...

ST-13 is 1.34" OD
Original Viper is .976 OD
Scale factor is 1.373X

Length of original Viper is 13.875 so the 1.373X version should only be about 19 inches.


Thanks! I appreciate the correction on those figures. Can't explain where the lengthened numbers came from.

The corrected version is right on the mark, even though the BC-13 cone is marginally short for the measurement of the PNC-50Y of the original...
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  #272  
Old 03-26-2006, 01:49 PM
James Pierson James Pierson is offline
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Join Date: Dec 2005
Location: Washington State
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Lightbulb New Design: Neptune Lander

Well, since most of the planets are take I decided to call this one the Neptune Lander . Craig and I seem to have worked the kinks out of this one via e-mail.
This lander is a mini motor version and should be a great ball field flyer. It should reach an altitude of 225 feet and fly on an A10T-3 only. I think I hear the shouts for an upscale version of this one already.

I hope you enjoy this one.

James Pierson
NAR #77907
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  #273  
Old 03-26-2006, 10:39 PM
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CPMcGraw CPMcGraw is offline
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Exclamation New Plan -- Volare'

Here's another use for those now-OOP Screamin Mimi kits...

Simple design, just lots of angular fin shapes.

Length: 26.73"
Diameter: 1.64"
Fin Span: 8.64"
Weight: 3.28 oz

C11-5.....470'.....15 FPS
D12-5.....985'.....23 FPS

Use a 3/16" diameter 48" rod for these flights.

Skill Level 1.

Enjoy!
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  #274  
Old 03-27-2006, 08:53 PM
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CPMcGraw CPMcGraw is offline
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Exclamation New Plan -- Helixicon

From a suggestion by James Pierson...

A derivitave of the Swizzle Stick and Swizzle Pick, this tube-fin design features a Double-Helix grouping of the tubes instead of the standard one-row or two-row evenly-aligned groups seen typically.

Static margins are 8.5 and above when loaded.

Length: 29"
Diameter: 1.34" (ST-13)
Fin Span: 1.84"
Weight: 5.39 oz

D21-4.......524'.....3 FPS.....20" Rod
E15-4.......980'.....7 FPS.....31" Rod
F21-W4.....1172'.....9 FPS.....24" Rod

All configurations are using a 3/16" diameter 36" launch rod...

BP motors are not recommended, as this design requires a higher initial peak thrust to get the model moving.

Skill Level 2+

Enjoy!
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  #275  
Old 03-28-2006, 07:08 PM
James Pierson James Pierson is offline
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Lightbulb New Designs: The Ringer and Mini Ringer

Here is a pair of rockets that I whipped up. The Ringer and the Mini Ringer. They may be a bit of a challenge to built but I like the unique design aspect of these rockets. I hope all or you will enjoy them as well. Any suggestions on these design are welcome.

Thanks Again, JP

James Pierson
NAR #77907
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  #276  
Old 03-28-2006, 09:59 PM
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CPMcGraw CPMcGraw is offline
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Exclamation New Plan -- Baby Cherokee

If you can have a Baby Bertha, why not a Baby Cherokee???

This was an idea that came to me when I had the 4" payload body and NC stuck to the top of the 3.5" booster body of the CDD. Instant satisfaction with the looks!

Simplifying things a bit, this is a single 7.5" length of BT-55 with a standard 18mm mount, and the booster fins from the CDD.

Length: 12.9"
Diameter: 1.32"
Fin Span: 5.27"
Weight: 1.48 oz

A8-3......192'......3 FPS.....36" Rod
B4-4......477'.....12 FPS.....36" Rod
B6-4......485'.....17 FPS.....36" Rod
C6-5.....1050'.....23 FPS.....36" Rod

Skill Level 1.

Enjoy!
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  #277  
Old 03-28-2006, 10:08 PM
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CPMcGraw CPMcGraw is offline
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Quote:
Originally Posted by James Pierson
Here is a pair of rockets that I whipped up. The Ringer and the Mini Ringer. They may be a bit of a challenge to built but I like the unique design aspect of these rockets. I hope all or you will enjoy them as well. Any suggestions on these design are welcome.

Thanks Again, JP

James Pierson
NAR #77907


The Mini Ringer qualifies for the "Schoolyard Sounder" identifyer.

Nice design, James!
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  #278  
Old 03-30-2006, 11:33 AM
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CPMcGraw CPMcGraw is offline
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Exclamation New Plan -- Solarian

Another simple, no-frills 4FNC that should get flown a lot. Nothing is more frustrating than a model which has something break off each time it's flown. Solarian has nothing but fins and launch lugs...

This model has excellent flight performance on 24mm "C", "D" and "E" motors.

Skill Level 1+

Length: 25.4"
Diameter: 1.325" (BT-55)
Fin Span: 6.67"
Weight: 3.5 oz

Requires a 3/16" diameter 48" launch rod.

C11-5......485'.....11 FPS
D12-7.....1100'.....25 FPS
E9-8......1780'.....29 FPS (Reef the chute)

Enjoy!
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  #279  
Old 03-31-2006, 08:14 PM
James Pierson James Pierson is offline
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Lightbulb New Design: Shock Wave

Here is another design I came up with. This design was very much an accident and not what I intended originally. After much modification I ended up with a much shorter and lighter version. It might make a good Gooney Bird if it had some crazy decals to go with it.

Thanks and Enjoy,

James Pierson
NAR #77907
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  #280  
Old 04-01-2006, 04:18 PM
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Exclamation New Image -- Swallow

Another in the "Schoolyard Sounders" series.

A nice little flyer with angular styling. For 13mm motors.

Skill Level 1.

Length: 17.3"
Diameter: 0.908" (ST-8)
Fin Span: 2.3"
Weight: 0.78 oz

A3-4T.....485'.....9 FPS

Enjoy!
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