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  #1  
Old 02-04-2018, 12:53 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
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Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 5,585
Default Build Thread: scratch 1:13 scale Black Brant III

Now that I've finally replicated the faux nozzle I can now scratch build the BB III in BT55 based, c. 1:13 scale.

First, the pick:

(1) BT55 x 12"
(1) BT55 x 6.7"
(both will be joined to create the main BT)
(1) BT55 X 1.26" (payload section)
(1) PNC 55
(2) JT-55 COUPLERS
(1) FAUX NOZZLE ASSEMBLY
(1) FIN PATTERN
(1) SHEET OF 3/32" BASSWOOD
(1) BT 20 X 6" 9 (for engine mount)
(2) CR 55/20
(1) THRUST RING
(1) 100# BRAIDED KEVLAR X 24"
(1) SHOCK CORD 1/4" X 48"
(1) DECAL SET (no replacement!)

TBC
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  #2  
Old 02-17-2018, 08:42 PM
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I've enlarged and cut out my 1: scale BBIII fin pattern and cut (3) blanks from my finest sheet of 3/32" basswood. I then hand scrape the bevels into the leading edges.

As for the 18MM engine mount, I'm not going to "pollute" this scale build with an engine hook. It will be "old school" friction fit. I've glued the thrust ring 2.25" from the rear. As always, I've attached a length of 100 lb. braided Kevlar cord to the upper CR for a shock cord mount.

TBC
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  #3  
Old 02-18-2018, 01:45 PM
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LeeR LeeR is offline
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Location: Colorado
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I like the idea of ditching the hook on scale builds. I’ve often thought it would be nice to develop a mount that locks the motor in from the top — basically a twist lock. Kind of like the twist lock mounts on the Semroc Brighton (their big Ranger / Super Big Bertha). That kit comes with multiple mounts that are inserted into a “holder” tube, and twist to lock them in place.

I have that kit, and I’ve never seen so many parts in one box!
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Projects: Mars Snooper, Honest Johns (new, and Mini), Super Cobra, Der Saturn Max
In the Paint/Detailing shop: Estes Saturn 1B
Completed!: Semroc Mars Lander, Super Orbital Transport (scratch-built), Interceptor-E
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  #4  
Old 02-18-2018, 03:39 PM
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jeffyjeep jeffyjeep is offline
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The 1:13 scale BBIII now has it's engine mount inserted, it's fins mounted, it's PNC55 and payload tube assembled and a Kevlar tether attached to same, and the fins are treated with (4) coats of sanding sealer and sanded.

It's ready for primer.

TBC
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  #5  
Old 02-19-2018, 07:59 AM
BARGeezer BARGeezer is offline
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Join Date: Nov 2017
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Looking good. Going with the red/white pattern? Not to throw shade but, I'm looking at a vintage photo and it looks like the BB III has a boat tail rather than a nozzle?

EDIT: Apologies, I checked Peter Alway's book, it's definitely a nozzle. As Gilda Radner used to say, Never mind!
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  #6  
Old 02-19-2018, 11:31 PM
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I'm using ROTW for the reference. Your photo DOES kinda-sorta make it look like a boattail though. Maybe it's just camera angle.

Yes, I'm doing the red and white Canadian pattern.
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