Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Work Bench > Projects
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-02-2021, 08:28 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,760
Default Build thread: Semroc Nike Tomahawk!

My erockets parts order came in and I have all the stuff I need to make the Semroc Nike Tomahawk #KD-7. I didn't order any recovery laundry because I have plenty on hand already.

This is gonna be FUN!

TBC
Attached Thumbnails
Click image for larger version

Name:  IMG_1399.JPG
Views: 54
Size:  362.9 KB  
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078
Reply With Quote
  #2  
Old 02-02-2021, 08:53 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,760
Default

$5.79 may seem like a lot of loot for a laser cut basswood sheet of parts this small, but since I don't have to cut these little stinking parts by hand (which I don't have the hands or the eyes to do) then I consider it a bargain!

The Vixen has brought me a Black and Tan. Yummy!

Good night. TBC
Attached Thumbnails
Click image for larger version

Name:  IMG_1401.JPG
Views: 37
Size:  54.9 KB  
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078
Reply With Quote
  #3  
Old 02-02-2021, 10:30 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,760
Default

Well, that Black and Tan went down fast--so did the second one. I have a second wind to do a little more tonight.

I've assembled the engine mount and made a couple of modifications to it. I glued a ring around the engine hook rather than taping it and I added a thrust ring. I ALWAYS add a thrust ring to mounts that don't have one. From my seemingly massive supply, I've attached a 100 lb. Kevlar leader and a 1/4" x 48" elastic fabric shock cord to the mount. All joints are filletted with epoxy.

The BNC of the sustainer and the Nike transition are quite rough so I secured them into scap pieces of BT and then enrobed them generously with diluted wood filler.

That's all for tonight--this time I mean it. Good night.

TBC
Attached Thumbnails
Click image for larger version

Name:  IMG_1402.JPG
Views: 44
Size:  51.0 KB  Click image for larger version

Name:  IMG_1403.JPG
Views: 51
Size:  60.7 KB  
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078
Reply With Quote
  #4  
Old 02-03-2021, 01:58 PM
Chris_Timm's Avatar
Chris_Timm Chris_Timm is offline
Craftsman
 
Join Date: Mar 2006
Posts: 457
Default

This round is eye-catching!
Attached Thumbnails
Click image for larger version

Name:  e01cc68b-a6b0-4003-8cdb-e60c16798d1e.tiff.jpg
Views: 73
Size:  355.3 KB  
Reply With Quote
  #5  
Old 02-03-2021, 03:16 PM
Earl's Avatar
Earl Earl is offline
Apollo Nut
 
Join Date: Dec 2006
Posts: 4,893
Default

Quote:
Originally Posted by Chris_Timm
This round is eye-catching!


That is a nice photo. However, not sure that the dude digging the latrine right next to the launch pad has got the right idea....

Earl
__________________
Earl L. Cagle, Jr.
NAR# 29523
TRA# 962
SAM# 73
Owner/Producer
Point 39 Productions

Rocket-Brained Since 1970
Reply With Quote
  #6  
Old 02-05-2021, 12:04 AM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,760
Default

Um, yeah. Anyway, I've assembled the (4) Nike fin armatures and then taped them onto a scrap piece of balsa so I can put a drop of epoxy at each joint. I want to strengthen them now. Once they've been enrobed in the card stock it will be too late.

I've also mounted the (4) fins onto the Tomahawk sustainer and I'll fillet them with very subtle, "strength only" fillets.

TBC
Attached Thumbnails
Click image for larger version

Name:  IMG_1405.JPG
Views: 51
Size:  56.9 KB  Click image for larger version

Name:  IMG_1406.JPG
Views: 40
Size:  62.9 KB  Click image for larger version

Name:  IMG_1404.JPG
Views: 43
Size:  65.2 KB  
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078

Last edited by jeffyjeep : 02-05-2021 at 08:21 AM.
Reply With Quote
  #7  
Old 02-05-2021, 12:27 AM
SEL's Avatar
SEL SEL is offline
Officially Middle-Aged Rocketeer
 
Join Date: Mar 2005
Location: Portland, OR
Posts: 1,356
Default

Quote:
Originally Posted by jeffyjeep
My erockets parts order came in and I have all the stuff I need to make the Semroc Nike Tomahawk #KD-7. I didn't order any recovery laundry because I have plenty on hand already.

This is gonna be FUN!

TBC



Thanks for this build thread, Mr. Jeep - I'll be using it as a guide when I build mine later this month.
__________________
SAM #0031
Reply With Quote
  #8  
Old 02-05-2021, 12:36 AM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
President, MAYHEM AGITATORS, Inc.
 
Join Date: Jul 2005
Location: Nunya Bizznuss, Michigan
Posts: 13,443
Default

I reinforced the ribs on my Nike Tomahawk fins with Titebond after assembling them with CA.
Used very light "strength only" fillets on the Tomahawk fins as well.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
Reply With Quote
  #9  
Old 02-05-2021, 02:20 PM
jeffyjeep's Avatar
jeffyjeep jeffyjeep is offline
Old Submariner
 
Join Date: Jan 2009
Location: Home of Wayne & Garth
Posts: 7,760
Default

Now to wrap the Nike fins.

The printed card stock for the Nike fins was erroneously glossy on both sides, so before slitting the fins from the sheet I burnished the printed side of the cardstock with #00 steel wool--just to make sure I don't have an adhesion problem. I then slit them from the sheet with a new #11 blade and use the tip of a cuticle pusher and my steel ruler to make the folds. To make the fold of the leading edge EXTRA tight I rub the fold down with my nylon burnishing tool (that I've never actually used for burnishing.)

With the basswood armature strong enough to handle it, I flat-sand the (4) planes of the armature on my Corian board covered with 220 grit.

Now to lay the armature of the first fin. I've decided to use Aleene's Super Tacky glue for the initial placement of the armature's center rib. This will ensure I don't have wrinkles or puckers on the outside of the fin's chord. I'll register the armature's root edge to the same edge of the cardstock so I'll only have to correct the outer edge.

TBC
Attached Thumbnails
Click image for larger version

Name:  IMG_1409.JPG
Views: 31
Size:  47.5 KB  Click image for larger version

Name:  IMG_1408.JPG
Views: 29
Size:  46.9 KB  Click image for larger version

Name:  IMG_1410.JPG
Views: 34
Size:  46.5 KB  
__________________
Never trust an atom. They make up everything.

4 out of 3 people struggle with math.

Chemically, alcohol IS a solution.

NAR# 94042
SAM# 0078
Reply With Quote
  #10  
Old 02-05-2021, 04:36 PM
dlazarus6660's Avatar
dlazarus6660 dlazarus6660 is offline
Master Modeler
 
Join Date: Oct 2009
Location: Southern N.H.
Posts: 4,333
Default

Hey!

What happen to the Silver Comet?
__________________
If it flies, I can crash it!
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 03:43 AM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2024