Loc Legacy Kitbash question

Loc Legacy Kitbash question

Post by MODROCK » Sun, 19 Dec 1999 04:00:00



I have a Loc Legacy that I plan on extending with another length of 38mm x 34"
tubing. This puts it at around 7 1/2' in length, giving it somewhat  the look
of a       " Mean Machine." Has anyone tried this? If so how did it fly?

Also, what have you used for motor retention, considering there is no room for
t-nuts? I really don't want to use a motor clip because I would like to be able
to fly from "F" to long burn "H's."

Thanks for any help and suggestions.

Joe Alain
NAR # 73346
IAR # 202
SOuth LouisiAna Rocketry ( SOLAR ) # 8

 
 
 

Loc Legacy Kitbash question

Post by Woody Mille » Sun, 19 Dec 1999 04:00:00


Quote:

> I have a Loc Legacy that I plan on extending with another length of 38mm x 34"
> tubing. This puts it at around 7 1/2' in length, giving it somewhat  the look
> of a       " Mean Machine." Has anyone tried this? If so how did it fly?

> Also, what have you used for motor retention, considering there is no room for
> t-nuts? I really don't want to use a motor clip because I would like to be able
> to fly from "F" to long burn "H's."

> Thanks for any help and suggestions.

> Joe Alain
> NAR # 73346
> IAR # 202
> SOuth LouisiAna Rocketry ( SOLAR ) # 8

Have not lengthened it, but the one I built I used 6x23 studs..  Epoxyed both
rings, and then drilled holes for the studs.
Epoxyed them in leaving them out 1/2" or so.  Using wing nuts and a 24-29
adapter, this will work for 24 reloads too.  Kaplow has also suggested #4
t-nuts, but it just seems to tight to me - no place to secure the t-nuts..
--
Woody Miller
NAR 74701 SR L1

 
 
 

Loc Legacy Kitbash question

Post by Dwight L. Brow » Sun, 19 Dec 1999 04:00:00


I would get an extra long coupler if you can.  It will not be lots of fun
getting the two tubes straight with a regular size coupler. If this is the
separation point of the rocket be sure that it is secure so the rocket stays
straight under boost.  As to motor retention you can extend the motor tube
about 3/4" and that will give you a secure thing to tape to (you should also
friction fit the motor too)  If you want to spend more money you can get an
AeroPack retainer.  Really I have never had any trouble with friction
fitting dozens of E, F, G, and H motors I have never had a motor kick out.
Just be careful and take your time.

Yours,

Dwight


Quote:
> I have a Loc Legacy that I plan on extending with another length of 38mm x
34"
> tubing. This puts it at around 7 1/2' in length, giving it somewhat  the
look
> of a       " Mean Machine." Has anyone tried this? If so how did it fly?

> Also, what have you used for motor retention, considering there is no room
for
> t-nuts? I really don't want to use a motor clip because I would like to be
able
> to fly from "F" to long burn "H's."

> Thanks for any help and suggestions.

> Joe Alain
> NAR # 73346
> IAR # 202
> SOuth LouisiAna Rocketry ( SOLAR ) # 8

 
 
 

Loc Legacy Kitbash question

Post by Michael Roy Holliha » Sun, 19 Dec 1999 04:00:00


Quote:

> I have a Loc Legacy that I plan on extending with another length of 38mm x 34"
> tubing. This puts it at around 7 1/2' in length, giving it somewhat  the look
> of a       " Mean Machine." Has anyone tried this? If so how did it fly?

I had a THOY Wasp that I extended to just over 7 feet; I called it the
"Hot Needle of Inquiry." It's similar to the Legacy and it flew very
well! Higher average thrust motors tend to do better than
low-average-thrust motors (less wobble). Go to my website, below, and I
have pics of it.

Quote:

> Also, what have you used for motor retention, considering there is no room for
> t-nuts? I really don't want to use a motor clip because I would like to be able
> to fly from "F" to long burn "H's."

I made sure the motor tube extended about a half-inch out and just
taped/friction fit the motors. Never had a problem with it. If you're
going for 1/2 mile or better altitudes, you might want to bore some 1/8"
holes in the payload and main body tube sections, for air pressure
equalisation. And make sure the nose cone is well fitted!

--
Michael Roy Hollihan
Mid-South Rocket Society
Memphis, TN
NAR Section #550
(Remove the NOT to REPLY)

Visit Mr. Mike's Rumpus Room O' Science:
http://members.xoom.com/hollihan/
And the Mid-South Rocket Society Homepage:
http://msrs.mem.net

Double negatives are a definite "no-no." (Richard Shuur, "Sez You," NPR)

 
 
 

Loc Legacy Kitbash question

Post by JPSARTRE » Sun, 19 Dec 1999 04:00:00


Quote:
>Subject: Loc Legacy Kitbash question

>Date: Sat, 18 December 1999 12:42 PM EST

>I have a Loc Legacy that I plan on extending with another length of 38mm x
>34"
>tubing. This puts it at around 7 1/2' in length, giving it somewhat  the look
>of a       " Mean Machine." Has anyone tried this? If so how did it fly?

>Also, what have you used for motor retention, considering there is no room
>for
>t-nuts? I really don't want to use a motor clip because I would like to be
>able
>to fly from "F" to long burn "H's."

>Thanks for any help and suggestions.

A 7 1/2' Legacy....cool.  The only problems that I can see would be the fact
that it would be way too stable and would tend to correct course very
innefficiently, like the Mean Machine.  Unlike the MM though, I don't think
that it would warp in the sun.  The Legacy's BT is a little more stout.  For
motor retention, try Red Arrow Hobby.  They make a 38mm-29mm motor mount
adapter that has an integral motor retainer built in.  I don't remember the
details on how they accomplished this at the moment, but if you purchased one,
you'd see.

My LOC Legacy is red, white and blue banded.  If I stretched it, what colors
would I use? <bg>

Good luck,

Mark Simpson
NAR 71503 Level II

 
 
 

Loc Legacy Kitbash question

Post by Local Moti » Sun, 19 Dec 1999 04:00:00


For motor retention I would recommend getting the AeroPac retainers!  Search
ROL vendors for AeroPac.  I use them on almost all my rockets and never kicked
a motor out.  
 
 
 

Loc Legacy Kitbash question

Post by Bob Kapl » Mon, 20 Dec 1999 04:00:00


Quote:

> I have a Loc Legacy that I plan on extending with another length of 38mm x 34"
> tubing. This puts it at around 7 1/2' in length, giving it somewhat  the look
> of a       " Mean Machine." Has anyone tried this? If so how did it fly?

In general, doing this has no negative effects on the stability of the
rocket. As an RSO, I wouldn't even give it a second look.

You will end up with a long rocket that is difficult to transport. I'd keep
the separation point at the original tube end, and use a full LOC coupler
and make the whole top end a big payload section. Be sure the nose cone is
secure, using some #2 screws if necessary. And remember that very long dark
colored rockets can warp in the sun. Don't paint it black!

Quote:
> Also, what have you used for motor retention, considering there is no room for
> t-nuts? I really don't want to use a motor clip because I would like to be able
> to fly from "F" to long burn "H's."

It can be done, but it requires the really small T nuts, and then you have
to file off the flange until the disk is nothing but a straight line. You've
only got between 3-4mm of space between the tubes to work with. Don't worry
if the centering ring cracks, just CA it well around the nuts and cover
everything with a layer of good epoxy.

Short of that, the other suggestion that comes to mind is to make a standard
type motor clip, but without the tab in the front that acts as a motor
block. In fact, bend the top tab OPPOSITE the conventional way, and use one
of the centering rings as a stop for this tab. Add tape and epoxy to keep it
from wiggling around just as you do with a small rocket.

        Bob Kaplow      NAR # 18L       TRA # "Ctrl-Alt-Del"

Kaplow Klips:   http://members.aol.com/myhprcato/KaplowKlips.html (baffle too!)
NIRA:           http://www.nira.chicago.il.us  NAR:    http://www.nar.org