HiPower-Rocketry.com

tabs

What's New

L3 page updated 2-22-04  Construction Begins

BATFE at it again!  The BATFE is reportedly working on a video to show model rockets  shooting down an aircraft.

John Wickman has created a compromise bill which is much closer to the original S.724 proposed by Sen. Enzi, John hopes that the Senators will approve of this version.

S.724 on hold!  NY & NJ Senator's vow to filibuster the bill

Senator Enzi's Bill S724 makes it through committee, but not as originally written.  Bill now exempts APCP based hobby motors up to .9 pounds.  Storage requirements exempted for up to 25 pounds total.  

The hobby needs your support!   Give to the NAR/TRA legal fund.  Join ARSA and support the legislative effort.  And most important of all, buy stuff, support the vendors at this difficult time.

 

L3 Page 3


 

Construction Begins  2-22-04

It's really not warm enough yet to begin major work, but warm enough that some of the work can at least start.

Step1 - Begin nose cone assembly.

Nothing out of the ordinary planed here.  To add strength and allow the bulkhead to be removed so I can add weight if needed I will epoxy a 3/8 inch threaded rod into the nosecone.  The Amraam's nosecone will actually consist of the following parts, the 7.5 inch fiberglass nosecone, a short section of 7.5 glassed tubing, a coupler, and bulkplate.  I will pour around 4 inches of epoxy into the tip to anchor the rod.  After allowing the epoxy to fully cure I will add 2 part expanding foam to fill the cone about half way, leaving space in which to add weight if needed.  My trusty Dremel and sanding drum were first used to get inside the nose cone and "rough up" the insides to make certain the epoxy and foam will have something to bite into.  No prep work was done to the short piece of airframe since it will be removed once the epoxy cures; it, along with the bulkplate are at this point only to insure the rod is properly centered in the nosecone.  Also note the coupler is not yet installed, again this will be prepared later in the construction process.
 

7.5 inch bulkplate

First step was to drill a 3/8 inch hole in the center to allow the 3/8 inch threaded rod to pass through.

Threaded rod and bulkplate

If you look closely you can see the bolt and washer on the far left of the rod. This is to give the epoxy some extra surface to grab onto. To the right of the bolt is a coupler since I needed to add two sections of rod together.

Rod in nosecone

Here's a look before the epoxy pour.

Ready to pour

The rod will be anchored to the tip of the nosecone with West System epoxy (resin + fast hardener + 404 high density filler)

First pour done

After the first pour (about four inches worth) the bulkplate is loosely attached to keep the rod centered during the cure.

Rod and Plate

Here's a better view, showing the three screws (temporary) added to insure I can pull the plate back out

Rod and Plate

Last look before leaving overnight to cure.

 

Home Up L3 Page 4

 
Home Page
SEPT 11 2001
Introduction
Links
BATFE Battle
Rocket Science
Level3
Movie Roc
Theatre
Photo Album
BookStore
STORE
Launch Calendar
GuestBook
Site Stats
 

HiPower-Rocketry.com