LOC/Precision Rocket Thrust

LOC/Precision Rocket Thrust

Post by Paul Gra » Sat, 17 Jan 1998 04:00:00



Hello all!

I have quite a bit of experience with Aerotech and North Coast rockets now
and would like to build a rocket by LOC/Precision with a single 29mm motor
mount.  I recently got an LOC catalog, but I have a few questions:

1.  Do these kits have thrust rings?  I've thought that maybe they use the
aft gold closure of the reload case as the thrust ring, but thats bound to
be *** those threads with the motor trying to pull apart from it during
thrust.  Is it really?  If the gold closure can be used as the thrust ring,
will it eventually cause the threads to ware out?

2.  Why does LOC only recommend single use motors for their 29mm kits?

Any information would be appriciated.  Thanks!

Paul Gray

http://www.FoundCollection.com/~pmgray

 
 
 

LOC/Precision Rocket Thrust

Post by Brian D » Sat, 17 Jan 1998 04:00:00


: 1.  Do these kits have thrust rings?  I've thought that maybe they use the
: aft gold closure of the reload case as the thrust ring, but thats bound to
: be *** those threads with the motor trying to pull apart from it during
: thrust.  Is it really?  If the gold closure can be used as the thrust ring,
: will it eventually cause the threads to ware out?

The kits don't have "thrust rings".  For single use motors, if a thrust
ring isn't already molded into the casing (like the NCR motors), use
several wraps of 1/4" masking tape at the aft end to roll your own.
For AeroTech reloads, go ahead and use the aft (gold) closure - that's
what it's there for.

: 2.  Why does LOC only recommend single use motors for their 29mm kits?

Reloadable motors tend to be slightly heavier than their single-use
counterparts, and will move the Cg of the rocket farther back, making
it less stable.  If you're convinced that the rocket is stable with
a loaded motor, go ahead and fly it.

If you're not sure how to determine if your rocket is stable,
start a new thread!  :)

--

New Technology, Inc.    web:    http://www.FoundCollection.com/~bday/hara
Huntspatch, AL

 
 
 

LOC/Precision Rocket Thrust

Post by Bob Kapl » Sun, 18 Jan 1998 04:00:00


Quote:

> 2.  Why does LOC only recommend single use motors for their 29mm kits?

In many cases, I think it's as simple as the kit artwork and instructions
are older than reloadable motors. It's not at all unusual to see long
discontinued motors on the LOC recommended list.

        Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"

 
 
 

LOC/Precision Rocket Thrust

Post by TonyRu » Fri, 23 Jan 1998 04:00:00


I thought the way to go with LOC was to bend yourself up a nice engine hook?