Little Joe II Construction Report

Little Joe II Construction Report

Post by ywu » Wed, 18 Jun 1997 04:00:00



Having managed to obtain a few Little Joe II (Estes 0892)
I built one a few weeks ago and realized that a few
construction notes would be of use to those planning
to build one.

The capsule is identical to the 1/100 Saturn V and Saturn
1B, which means that some surface details have to be sanded
off to be accurate for the LJII.  I tried to use an Exacto
blade and ended up using a sanding block with 100 grit, which
did a much better job.  You just have to be patient.

The wraps were fairly straight forward.  I used spray
adhesive type 77 for the main wrap, which worked well.  I used
carpenters glue for the small conduits and wraps, and wish I had
either used something I could clean up with solvent, or been
more careful as some leftover glue spots are visible.  The
ribbing on the lower wrap is quite subtle and doesn't hide
much.

The fins were not pre-cut, as the balsa has a triangular cross
section.  You glue them to the wrap, which is not very strong.
The layers of the paper delaminate very easily.  I strongly
suggest using the "rivet" method, of punching holes with a
thumbtack down through the wrap, into the body tube.  I didn't do
this originally and a fin broke off as the rocket fell over on
the table!  Afterwards, with rivets, it's taken a couple
of hard landings and survived perfectly.

In general, the end result is a very nice, cute, model
with good flying characteristics.  I've flown it on
both A3-4T and A10-3T, and think the A10 is the better
engine.  Between the drag and weight, the A4 doesn't
seem to get it up there as well.

I have a spare kit (besides the ones I'm auctioning off)
and plan the following modifications:

1) 18 mm mount.  It only goes 400 feet on an A, so maybe I'll
put a B4-4 in it.  C power might be too much.

2) Internal launch lug.  The LL as is is rather obtrusive to
the otherwise very scale appearance, IMHO.

3) Tissue paper on the fins.  Even after 3-4 coats of sanding
sealer, a slight grain is still visible.

With a color xerox of the decal and copies of the wraps, I
imagine an upscale would be simple.  The cone/capsule
would probably be easy to duplicate in a larger scale, and
is a simple cone with lots of toothpicks.

Has anyone tried this?

 
 
 

Little Joe II Construction Report

Post by David Buche » Wed, 18 Jun 1997 04:00:00


Quote:

>Having managed to obtain a few Little Joe II (Estes 0892)
>I built one a few weeks ago and realized that a few
>construction notes would be of use to those planning
>to build one.

>The capsule is identical to the 1/100 Saturn V and Saturn
>1B, which means that some surface details have to be sanded
>off to be accurate for the LJII.

Only if you are planning to build the A00-1 which is what this is.  The
other four flying Apollo Little Joes had different details.  Email me for
info here!

Quote:
>With a color xerox of the decal and copies of the wraps, I
>imagine an upscale would be simple.  The cone/capsule
>would probably be easy to duplicate in a larger scale, and
>is a simple cone with lots of toothpicks.

>Has anyone tried this?

Check out the Eye of the Storm page at the Golden Wood home page!  
Just look at the pics.  I've got 15 or more assorted Apollo Little Joes here
in my studio including five super scale renderings of the 1/100 scale
LJ IIs that flew based on the Estes (was Centuri) kit described above!

Dave, in the suborbital Eye!

http://www.mcn.org/b/goldenwood/

The Golden Wood Stringed musical Instruments    Aero-Pac# 11
Eye of theStorm Custom Rocket Products               Tripoli# 829
33700 S. Hwy. One                                               NAR # 47674
Gualala, CA 95445                              
Ph. 707 884 4213                                
Lothlorien                        Orpheus                     Caras Galadon

 
 
 

Little Joe II Construction Report

Post by PeteAlw » Wed, 18 Jun 1997 04:00:00


Quote:

>With a color xerox of the decal and copies of the wraps, I
>imagine an upscale would be simple.  The cone/capsule
>would probably be easy to duplicate in a larger scale, and
>is a simple cone with lots of toothpicks.

>Has anyone tried this?

Well, I built a Little Joe II at a larger scale, but I sort of thought of
it as a downscale of a *real* Little Joe II.

While a commercial kit can be useful as inspiration and for graphics for a
different scale, you can lose track of the prototype, and drift from
reality.

Peter Alway

 
 
 

Little Joe II Construction Report

Post by John Missin » Wed, 18 Jun 1997 04:00:00


Quote:

> 1) 18 mm mount.  It only goes 400 feet on an A, so maybe I'll
> put a B4-4 in it.  C power might be too much.

My sense is that this will leave you with too little space into which to
stuff the parachute.  An alternative that I'm planning is to cluster the
13mm motors (3-5).

Quote:
> 2) Internal launch lug.  The LL as is is rather obtrusive to
> the otherwise very scale appearance, IMHO.

I like this suggestion.  How the heck do you ensure alignment,
especially since you'll need to drill through the plastic capsule?>
 
 
 

Little Joe II Construction Report

Post by David Buche » Thu, 19 Jun 1997 04:00:00


Quote:


>> 1) 18 mm mount.  It only goes 400 feet on an A, so maybe I'll
>> put a B4-4 in it.  C power might be too much.

>My sense is that this will leave you with too little space into which to
>stuff the parachute.  An alternative that I'm planning is to cluster the
>13mm motors (3-5).

>> 2) Internal launch lug.  The LL as is is rather obtrusive to
>> the otherwise very scale appearance, IMHO.

>I like this suggestion.  How the heck do you ensure alignment,
>especially since you'll need to drill through the plastic capsule?>

John, this is a concern but it should be noted that the Centuri 1/100
Apollo Little Joe (which is what this kit is except for the 13mm motor)
had 18mm motor mounts and a C motor required nose weight but there
was plenty of room for the 'chute.  My  personal recommendation is
that ANY motor mount be pushed up as far as Chrusnic allows!  It leaves
a COOL smoke trail!  I've got a threeX13mm mount on an entirely scratch
1/100 with cast resin fins that needed nose weight but COOKS with
three A10s!

Dave, in the Eye.

http://www.mcn.org/b/goldenwood/

The Golden Wood Stringed musical Instruments    Aero-Pac# 11
Eye of theStorm Custom Rocket Products               Tripoli# 829
33700 S. Hwy. One                                               NAR # 47674
Gualala, CA 95445                              
Ph. 707 884 4213                                
Lothlorien                        Orpheus                     Caras Galadon