Adding Nose Weight

Adding Nose Weight

Post by James Michael » Tue, 01 Aug 2000 04:00:00



Whats the best or easiest way of addiing nose weight? Just curious. BTW,
Today I start work on my, "Super, Super Big Bertha. Its going to be
about 51 1/4 inches long and will seperate in the middle with
2 chutes. It will fly on either 2 D-class engines or 2 E's. Should be
Awesome!!

 Hope everyone had a safe day of launching!!!

 "Launch'em If You Got'em"!!
      Jim...........................

 
 
 

Adding Nose Weight

Post by Fred Jaros » Tue, 01 Aug 2000 04:00:00


I use clay and I use a foam to hold it in place.

FRED  (:-)}  

 
 
 

Adding Nose Weight

Post by Mnrdeng » Tue, 01 Aug 2000 04:00:00


I have a bag of #7 lead shot that I got at a sporting goods store.  Mix some
shot with epoxy and poor into nosecone.
 
 
 

Adding Nose Weight

Post by baDB » Tue, 01 Aug 2000 04:00:00


I remember back when I was a kid and needed to do this...

I used a couple of lead fishing weights and some plastic model cement.

BIG mistake

A month later the tip of the plastic nosecone still hadn't stopped
melting.

Bob


Quote:

>Whats the best or easiest way of addiing nose weight? Just curious. BTW,
>Today I start work on my, "Super, Super Big Bertha. Its going to be
>about 51 1/4 inches long and will seperate in the middle with
>2 chutes. It will fly on either 2 D-class engines or 2 E's. Should be
>Awesome!!

> Hope everyone had a safe day of launching!!!

> "Launch'em If You Got'em"!!
>      Jim...........................

 
 
 

Adding Nose Weight

Post by ....E » Tue, 01 Aug 2000 04:00:00


A handy tool I found is the pre-formed sandpaper tubes made for bird perches
from the local pet shop. Just apply contact cement to the inside of the sand
paper and the outside of a 1/2" dowell. You can reach quite long distances
with the appropiate length dowell.
Regs,
....Ed
http://www.FoundCollection.com/***iaHPR.org


Quote:
> Don't forget to wash out the inside of the NC as best you can also to
remove
> any oils or other crapola left over from manufacturing that might prevent
> the epoxy from sticking well. If you can, it'd also be great to somehow
sand
> the inside a bit to provide a surface for the epoxy to bite to.

> --
> Andrew D. Waddell
> PML Online Support Rep
> TRA 2043 L2/NAR 52875 L2

> PML: www.publicmissiles.com

 
 
 

Adding Nose Weight

Post by Jim Z in V » Wed, 02 Aug 2000 04:00:00


Quote:

> >Whats the best or easiest way of addiing nose weight? Just curious. BTW,
> >Today I start work on my, "Super, Super Big Bertha. Its going to be
> >about 51 1/4 inches long and will seperate in the middle with
> >2 chutes. It will fly on either 2 D-class engines or 2 E's. Should be
> >Awesome!!

    Use whatever you've got on hand. "Split-shot" fishing weights, bird
shot, ball bearings.......I've used plumber's solder clipped into 1/4"
lengths, or small screws or nuts too. Drop the appropriate amount into the
nosecone and pour some epoxy in to secure them.
--
Jim Z in Vermont

 
 
 

Adding Nose Weight

Post by Andrew Waddel » Wed, 02 Aug 2000 04:00:00


Don't forget to wash out the inside of the NC as best you can also to remove
any oils or other crapola left over from manufacturing that might prevent
the epoxy from sticking well. If you can, it'd also be great to somehow sand
the inside a bit to provide a surface for the epoxy to bite to.

--
Andrew D. Waddell
PML Online Support Rep
TRA 2043 L2/NAR 52875 L2

PML: www.publicmissiles.com



Quote:


> > >Whats the best or easiest way of addiing nose weight? Just curious.
BTW,
> > >Today I start work on my, "Super, Super Big Bertha. Its going to be
> > >about 51 1/4 inches long and will seperate in the middle with
> > >2 chutes. It will fly on either 2 D-class engines or 2 E's. Should be
> > >Awesome!!

>     Use whatever you've got on hand. "Split-shot" fishing weights, bird
> shot, ball bearings.......I've used plumber's solder clipped into 1/4"
> lengths, or small screws or nuts too. Drop the appropriate amount into the
> nosecone and pour some epoxy in to secure them.
> --
> Jim Z in Vermont


 
 
 

Adding Nose Weight

Post by Jim Z in V » Wed, 02 Aug 2000 04:00:00


    Good point Andrew. A piece of "sanding sponge" glued to the end of a
dowel would work well here. (woodworking supply places will have them)
--
Jim Z in Vermont


Quote:
> Don't forget to wash out the inside of the NC as best you can also to
remove
> any oils or other crapola left over from manufacturing that might prevent
> the epoxy from sticking well. If you can, it'd also be great to somehow
sand
> the inside a bit to provide a surface for the epoxy to bite to.

 
 
 

Adding Nose Weight

Post by The Silent Observe » Wed, 02 Aug 2000 04:00:00


Quote:

> Whats the best or easiest way of addiing nose weight?

Since I have reloading supplies around the house, I've found that
bullets make fine nose weights.  The 158 grain variety (common value for
.38 and .357 cartridges) go about 2.77 per ounce -- so if I need 1.5
ounces, 4 bullets is about right.  I glue them in with thin or medium
CA, followed by a shot of kicker to get the standing liquid to "go off."

More recently, I bought a 25# bag of lead shot -- which I figure ought
to give me enough nose weight to last until about 2010.

--
 WARNING!!  This area has been designated an official DOPE FREE ZONE!!

      If you're going to be a dope, please do it somewhere else!

Donald Qualls, aka The Silent Observer           NAR # 70141-SR Insured
Rocket Pages                http://silent1.home.netcom.com/launches.htm
Telescope Pages            http://silent1.home.netcom.com/astronomy.htm

Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

 
 
 

Adding Nose Weight

Post by Ed Beg » Wed, 02 Aug 2000 04:00:00


On Tue, 01 Aug 2000 00:39:07 GMT, "Andrew Waddell"

Quote:

>Don't forget to wash out the inside of the NC as best you can also to remove
>any oils or other crapola left over from manufacturing that might prevent
>the epoxy from sticking well. If you can, it'd also be great to somehow sand
>the inside a bit to provide a surface for the epoxy to bite to.

>--
>Andrew D. Waddell
>PML Online Support Rep
>TRA 2043 L2/NAR 52875 L2

>PML: www.publicmissiles.com

<snip, adding weight advise>

I use BBs and epoxy.  Last time I drilled approx. 3/16" holes in the
NC tip, 7 or 8 of them evenly spaced..  Covered with masking tape
before adding weight.  The epoxy flowed into the holes.  I hope it
helps to 'lock' in the added mass.

- Ed

Remove ".swg" to reply

 
 
 

Adding Nose Weight

Post by Peter Cl » Wed, 02 Aug 2000 04:00:00


Quote:

>Whats the best or easiest way of addiing nose weight?

For safety's sake, I like to suspend the weight in the middle of the cone so
plastic and paper must be compressed before the lead hits anything. I know it
would be little help in a direct hit from altitude, but if it someday made the
difference between a fatality and a serious injury, that would be worth it.

My method is found at http://hometown.aol.com/peterlynnc/nc.html

Peter W. Clay NAR 18619 SR L1
"What is a tree, but a nut that wouldn't listen to the pessimists?"

 
 
 

Adding Nose Weight

Post by Rick Polzell » Wed, 02 Aug 2000 04:00:00


Wouldn't this reduces the effect of the weight thereby requiring more.  I'm
not sure of the law or principles name.  But I know that a smaller weight
further from the fulcrum is more effective than a larger one closer to it.
I do agree that an increased deceleration distance works but I think you
might be chasing your tail.  I have no preference for getting hit in the
head from either design. I don't want to be hit at all.

Quote:

> >Whats the best or easiest way of addiing nose weight?

> For safety's sake, I like to suspend the weight in the middle of the cone
so
> plastic and paper must be compressed before the lead hits anything. I know
it
> would be little help in a direct hit from altitude, but if it someday made
the
> difference between a fatality and a serious injury, that would be worth
it.

> My method is found at http://hometown.aol.com/peterlynnc/nc.html

> Peter W. Clay NAR 18619 SR L1
> "What is a tree, but a nut that wouldn't listen to the pessimists?"

 
 
 

Adding Nose Weight

Post by Alan W. Holm » Thu, 03 Aug 2000 04:00:00




Quote:
>I use BBs and epoxy.  Last time I drilled approx. 3/16" holes in the
>NC tip, 7 or 8 of them evenly spaced..  Covered with masking tape
>before adding weight.  The epoxy flowed into the holes.  I hope it
>helps to 'lock' in the added mass.

Neat idea!  Did you have to do much sanding in order to smooth the
nosecone out afterwards?

                //  Alan

Alan Holmes

 
 
 

Adding Nose Weight

Post by Ed Beg » Thu, 03 Aug 2000 04:00:00




Quote:


>>I use BBs and epoxy.  Last time I drilled approx. 3/16" holes in the
>>NC tip, 7 or 8 of them evenly spaced..  Covered with masking tape
>>before adding weight.  The epoxy flowed into the holes.  I hope it
>>helps to 'lock' in the added mass.

>Neat idea!  Did you have to do much sanding in order to smooth the
>nosecone out afterwards?

Alan:

Wasn't too bad, I tried to get the masking tape on the exterior flat
and tight across the holes.  Very little sanding once the epoxy cured.

One correction, I just went back and looked, its a Fat Boy 24mm
conversion, the holes are more like 3/32", not 3/16", sorry.  

I have to admit that it is not totally original.  I got the idea from
a build review on EMRR for the NCR Bomarc.  The author, Jeff Brundt,
had a lot of good tips.  One was to 'lock in' nose weight with bamboo
barbeque skewers inserted through holes drilled through the NC.  I
only modified a little.  

- Ed

(about as far as I've gone with the Bomarc is to get the parts out of
the box, look at all the plastic, shake my head, and think to myself
"man, that's allot of plastic"  :{(  )

Remove ".swg" to reply

 
 
 

Adding Nose Weight

Post by Mark Simpso » Fri, 04 Aug 2000 04:00:00


Peter,
Like you, I also like to keep the weight buried inside of the nosecone.  For
larger rockets, I take a long threaded eyebolt and run it up the center of the
nosecone, cut a slit in the side of the shoulder and add fender washers on the
threaded bolt as needed.  Then I add a wingnut to the stack and tighten.  I know
that many here don't believe that there's a difference in how or what is used to
weight a NC, but I think that a nosecone with lead in its nose is more likely to
come in ballistic than my weighted nosecone which has a CG closer to the center
and would come in doing a flat spin at a reduced velocity Vs the leaded NC.
I like your system for smaller rockets and will give it a try.

Mark Simpson
NAR 71503 Level II

Quote:


> >Whats the best or easiest way of addiing nose weight?

> For safety's sake, I like to suspend the weight in the middle of the cone so
> plastic and paper must be compressed before the lead hits anything. I know it
> would be little help in a direct hit from altitude, but if it someday made the
> difference between a fatality and a serious injury, that would be worth it.

> My method is found at http://hometown.aol.com/peterlynnc/nc.html

> Peter W. Clay NAR 18619 SR L1
> "What is a tree, but a nut that wouldn't listen to the pessimists?"