I picked up a spare Mini HoJo last week with a Hobby Lobby coupon, and celebrated finally getting Sarah's license plates by cutting the tubes and balsa for the project. It's a close enough to .75 that I'm going with that as the downscale number. I still need to raid the shop for a couple of PNC-20Ns, but other than that, it's all set. It's big enough that I'm just going to go with 18mm power.

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Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Mini Dactyl Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle

In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III

Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2

Very cool, Bill! I've been thinking about doing this downscale for a few days now (ever since looking up the original HJ nose cone in John Brohm's nose cone reference and realizing that the original HJ nose was used on the Deep Space Transport.

If you don't mind my asking, what are the tube lengths for the downscale? I could do the scale calcs, but if you've already done them and don't mind sharing, it'll save me a step.

Greg

Okay, first a disclaimer: Beware of figure quoted by fish named Wallyum. This is the same guy who took algebra three times and never managed to get above a D.

According to my cipherin', the BT-50 main tube is 13.32" long, while the 2 external tank bodies are 5.92".

I love how the Mini HoJo is a $6 rocket with the HL coupon.

__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Mini Dactyl Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle

In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III

Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2

Me too - and thanks for the dimensions - this is gonna be a sweet build!

And based on the speed with which it's going together, a fast one!

__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Mini Dactyl Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle

In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III

Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2

Good use of spare parts too. The BNC-50HJ is available at Semroc. You trade filling the spin nozzle for sealing the balsa. I think Tango Papa did the reduced decals also.

You mean you did not want to go with a 0.7366037735849057 reduction calculation?

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Gravity is a harsh mistress
SAM 002
NAR 91005
"The complexity of living is eminently favored to the simplicity of not."

I do have decals for that. In the Upscale/Downscale section. In the "Fits BT-20" section Right near the top.

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"I'm a sandman. I've never killed anyone. I terminate runners when their time is up." Logan from "Logan's Run"

http://sandmandecals.com/

Not exactly sure what your building.But by looking at the pieces parts,looks like its going to be a cool rocket.

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Scotty Dog
NAR 90998

A little one of these.

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__________________
Gravity is a harsh mistress
SAM 002
NAR 91005
"The complexity of living is eminently favored to the simplicity of not."

Would this be for the BT-50 based model here or for a BT-20 main tube? I will want two sets of them for a BT-50 main tube.

How is the ALPS ink holding up? I also need four more Gemini.

__________________
Gravity is a harsh mistress
SAM 002
NAR 91005
"The complexity of living is eminently favored to the simplicity of not."