Miniceptor?

Guys,

I'm on a roll now! I drive a lot for work and work these designs out in my head while I drive.

I do have to get rid of a lot of nose cones!

This is a BT-20 body with a 13mm motor mount...sometimes you just don't have a 3 mile by 3 mile sod farm to fly in and ya need a smaller rocket.

Needs the fin pod fins added yet and the filets done.

I whipped this out after work and finished this far after supper.

It's a mini-Interceptor...a MINICEPTOR

sandman

That looks great! Be sure to post pics of the flight!

Awesome rocket Sandman....you did a great job

Minor change.

I didn't like the position of the fins...so...i cut them off and moved them.

Moved them forward 1". I think it looks better.

sandman

I made a change to the nose cone...working again with my favorite media for nose cones...BALSA!

I just put a couple of coats of Pactra white dope on as a base...have to finish sand yet.

This is NOT the original Estes K-50 Interceptor...this is a BT-20 version with a 13mm motor mount...for small fields.

I like this better than the plastic.

sandman

Looks great, man! And I agree with you about the cone. Gonna paint to match the M OT?

sandman you just toooo coool.....heheheheh

shockie B)

That looks great!

Will you be posting plans, fin patterns, stability info, etc.?

I'm always interested in very-low-power (as in low altitude) rocketry, considering the size of my launch site.

("Very-low-power"... New forum? For 1/2A and lower?)

That looks great!

Will you be posting plans, fin patterns, stability info, etc.?

I'm always interested in very-low-power (as in low altitude) rocketry, considering the size of my launch site.

("Very-low-power"... New forum? For 1/2A and lower?)

I'd like the plans to that rocket. When I can't launch in the bean field I launch at my grandparents which they have a good sized yard, this rocket would work great for that area.
The neighbors told me to tell them when I will launch again, the miniceptor would be a cool crowd pleaser.

I really hope this works...

I saved it as a giff.

Build the model using a BT-20 20" long.

The nose cone is home made..a simple cone 4.2" long with an added balsa windshield (see plans).

All the balsa is 1/16".

Streamer recovery.

Add wehatever detail to taste.

designed for a 13mm motor mount...should fly on an A3-4 or an A10 motor.

Try a two stage if ya like. Be creative.

sandman

I just printed it...seems to be the wrong size...not what I drew.

Try this and maybe blow it up to match the scale.
Ok i know the scale says 1.08"...i was rushing it!

sandman

Guys,

I just remembered somthing important about this model...I even got chewed out about it today

THIS WAS JIMZ'S IDEA!!! ...I STOLE IT OK!...I GOT TO THE PATTENT OFFICE FIRST!!!!

SANDMAN

Here is the final picture...with decals.

I just kinda made up stuff from my decal inventory (OK it's a really BIG inventory)

This is a comparison shot of my full size (Estes K-50 clone, which was signed by Vern Estes himself he he!) and the Miniceptor.

Enjoy.

sandman

P.S. THIS WAS JIMZ'S IDEA

they both look great comrad...keep up the good work. You inspire us all to do something different...Marty

I finally got all the decals on!

I had to remove the decals. (JimZ didn't like the ones I did so he made me the correct ones.)

There was some paint damage so I had to repaint it.

It took 4 hrs. to put all the decals on!

Go to JimZ's site and compare it to the original K-50 kit.

This again is based on a BT-20 and that is a 13mm mini engine (that's what it flys on) for comparison.

sandman

Ok, I'm going downscale one last time. This is a Micro Maxx version.

JimZ sent me decals as sort of a "I dare ya to build it".

Alright, I built it...now I gotta try and get those decals on!

It's posing with it's BT-20 size brother.

sandman

Very nice job, Sandman. As usual !!

oh man! i love it!

Be sure to use the macro lens when you try to take pictures of THAT little thing! DOn't want to miss a single detail! *S*

Sandman,

Excellent job bro...and exact miniature!

You are gonna need a microscope to put those decals on though...I know. We have had a rash of Micro's lately and it's great!

Carl

Here's the little Micro all dressed up with JimZ's decals.

sandman

And here she is with her "middle" sister, the BT-20 size.

sandman

oh man, i'm in love!

More proof that size doesn't matter (?)

Sandman...


...Damn!


That about says it all

Really great job.

Weekends

: Two Thumbs Up on this one Sandman! If I could only do half as good! Keep it up!

How do you calculate stability for the micro sized rockets?

Maelstrom,

SWAG!

Scientific Wild Ass Guess!

Works for me

sandman

Let me throw out a opinion. As I recall, the Barrowman equations start to break down when the ratio of length to body tube diameter gets too large or too small (I don't have the ratios at my fingertips - something like less than 10 or over 30 IIRC). However, if the overall scale is the same, the stability of a MMX rocket should be obtainable using Barrowman, Rsim, etc.

I bet jflis will know about this better than I.

I also agree with sandman. I am much more likely to 'wing ' stability with a MMX model. Even if unstable, they are unlikely to damage anything, including themselves.