LOC Legacy: Motor mount suggestions?

LOC Legacy: Motor mount suggestions?

Post by Nicholas Le » Mon, 12 Oct 1998 04:00:00



Yo!

Ok I just started putting together my first LOC brand rocket, a
Legacy. I must admit that I was a bit surprised to find that it
doesn't contain any motor hooks or blocks. THEY say its because
of the difference in the various types of engines. I suppose it
is true, but still, it's a bit annoying.

Does anyone have any suggestions on what I should do? I plan to
be flying this thing on F class engines from Aerotech. What I'm
most anxious about is not blocking the motor from ramming up in
the body tube, but from it coming out during the ejection phase
from the rear of the rocket. Should I just go ahead and get one
from another kit or does anyone have a good homebrew suggestion
that doesn't require cannabilizing<sp?> another rocket?

G'day!

--                                          n i c h o l a s  j  l e o n
  /  elegance through simplicity   /
 /  good fortune  through truth   /          http://mrnick.binary9.net

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Tom Binfor » Mon, 12 Oct 1998 04:00:00


Quote:

> Yo!

> Ok I just started putting together my first LOC brand rocket, a
> Legacy. I must admit that I was a bit surprised to find that it
> doesn't contain any motor hooks or blocks. THEY say its because
> of the difference in the various types of engines. I suppose it
> is true, but still, it's a bit annoying.

> Does anyone have any suggestions on what I should do? I plan to
> be flying this thing on F class engines from Aerotech. What I'm
> most anxious about is not blocking the motor from ramming up in
> the body tube, but from it coming out during the ejection phase
> from the rear of the rocket. Should I just go ahead and get one
> from another kit or does anyone have a good homebrew suggestion
> that doesn't require cannabilizing<sp?> another rocket?

> G'day!

Leave out the motor mount and put an I132 in it :)
Seriously, have the motor tube stick 1/2" beyond the rear centering
ring. Build up a tape thrust ring on single use motors to the OD of the
motor tube, or on reloads, make sure the rear closure is clean. Apply
enough tape to the middle of the motor so the motor is a snug fit in the
tube, push it in, then tightly wrap 3 or 4 layers of masking tape over
the joint. I usually omit the tight fit in relatively short burn motors,
but reloads have a lot less surface for the tape over the joint.
Tom

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Jimbo Fran » Mon, 12 Oct 1998 04:00:00


Quote:

> THEY say its because
> of the difference in the various types of engines. I suppose it
> is true, but still, it's a bit annoying.

Annoying or not, it is true. Motors can come in a surprising variation
of lengths, so motor blocks are of no value, especially at this power
level.

Quote:
> Should I just go ahead and get one
> from another kit or does anyone have a good homebrew suggestion
> that doesn't require cannabilizing<sp?> another rocket?

-- There was recently threads 'Friction Fitting of Motors' and 'Q: LOC
graduator construction questions' that addressed these issues. Use
dejanews if you can't find them on your newsreader.

Enjoy!

--Jimbo Franz--

www.USRockets.com

Perspective is everything

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Dwight L. Brow » Mon, 12 Oct 1998 04:00:00




Quote:

> Leave out the motor mount and put an I132 in it :)

I just love the way this guy thinks!!!!!!

                                D.L. Brown   NAR 69453 L2

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Ed » Mon, 12 Oct 1998 04:00:00


Just bring the Legacy to the launch next weekend and we'll "HOOK" ya up.
....Ed
Quote:

> Yo!

> Ok I just started putting together my first LOC brand rocket, a
> Legacy. I must admit that I was a bit surprised to find that it
> doesn't contain any motor hooks or blocks. THEY say its because
> of the difference in the various types of engines. I suppose it
> is true, but still, it's a bit annoying.

> Does anyone have any suggestions on what I should do? I plan to
> be flying this thing on F class engines from Aerotech. What I'm
> most anxious about is not blocking the motor from ramming up in
> the body tube, but from it coming out during the ejection phase
> from the rear of the rocket. Should I just go ahead and get one
> from another kit or does anyone have a good homebrew suggestion
> that doesn't require cannabilizing<sp?> another rocket?

> G'day!

> --                                          n i c h o l a s  j  l e o n
>   /  elegance through simplicity   /
>  /  good fortune  through truth   /          http://mrnick.binary9.net


 
 
 

LOC Legacy: Motor mount suggestions?

Post by Greg Burk » Mon, 12 Oct 1998 04:00:00


Quote:

>Does anyone have any suggestions on what I should do? I plan to
>be flying this thing on F class engines from Aerotech. What I'm
>most anxious about is not blocking the motor from ramming up in
>the body tube, but from it coming out during the ejection phase
>from the rear of the rocket. Should I just go ahead and get one
>from another kit or does anyone have a good homebrew suggestion
>that doesn't require cannabilizing<sp?> another rocket?

Kaplow Klips are the way to go. You could try friction fitting, but with a
rather expensive casing involved, why take chances, right?
--
--------->==============>
Greg Burke NAR #65584 Level 1
President -  Southern Area Rocketry (SoAR) #571
Event Director - NSL/ MWMSSM '99
Club site = www.SoAR571.com
Personal pages = www.mindspring.com/~soar571/

The truth will set you free, but first, it'll***you off!!
------------------------------->========================>

 
 
 

LOC Legacy: Motor mount suggestions?

Post by LSLubec » Tue, 13 Oct 1998 04:00:00


Just go to any high power launch and see how easy it realy works. Danville is
Nov. 7-8 and Ross is having a launch Oct. 31. I sure any rocketeer will be
willing to show you .

Steve Lubecki  

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Bob Kapl » Tue, 13 Oct 1998 04:00:00


Quote:


>>Does anyone have any suggestions on what I should do? I plan to
>>be flying this thing on F class engines from Aerotech. What I'm
>>most anxious about is not blocking the motor from ramming up in
>>the body tube, but from it coming out during the ejection phase
>>from the rear of the rocket. Should I just go ahead and get one
>>from another kit or does anyone have a good homebrew suggestion
>>that doesn't require cannabilizing<sp?> another rocket?

> Kaplow Klips are the way to go. You could try friction fitting, but with a
> rather expensive casing involved, why take chances, right?

Time for my semi annual rant: Why is it that no one worries about the safety
issue of ejecting an expendable casing, which usually goes with a lawn dart
for the rest of the rocket, until that casing is worth $$$ that you don't
want to lose. I use the Klips on all large motors, expendable or reload. The
PVC system in a recnet Sprocket will also retain any kind of motor, and
can't slip out of the way like estes/at clips can and occasionally do.

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

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

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Tom Binfor » Tue, 13 Oct 1998 04:00:00


Quote:

> Time for my semi annual rant: Why is it that no one worries about the safety
> issue of ejecting an expendable casing, which usually goes with a lawn dart
> for the rest of the rocket, until that casing is worth $$$ that you don't
> want to lose. I use the Klips on all large motors, expendable or reload. The
> PVC system in a recnet Sprocket will also retain any kind of motor, and
> can't slip out of the way like estes/at clips can and occasionally do.

It's pretty hard to put Kaplow Klips on a 38mm rocket with a 29mm motor
mount.
Am alternative method is needed.
Tom
 
 
 

LOC Legacy: Motor mount suggestions?

Post by Andy En » Wed, 14 Oct 1998 04:00:00


With thin clearances, I've secured and s*** a couple of steel leaders
along the motor tube with loops out the tail to which safety wiring is
possible.  Pretty utilitarian (tacky) looking but seems to suffice for
now.

Regards,
Andy

Quote:

> It's pretty hard to put Kaplow Klips on a 38mm rocket with a 29mm motor
> mount.
> Am alternative method is needed.
> Tom

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Bob Kapl » Wed, 14 Oct 1998 04:00:00


Quote:


>> Time for my semi annual rant: Why is it that no one worries about the safety
>> issue of ejecting an expendable casing, which usually goes with a lawn dart
>> for the rest of the rocket, until that casing is worth $$$ that you don't
>> want to lose. I use the Klips on all large motors, expendable or reload. The
>> PVC system in a recnet Sprocket will also retain any kind of motor, and
>> can't slip out of the way like estes/at clips can and occasionally do.

> It's pretty hard to put Kaplow Klips on a 38mm rocket with a 29mm motor
> mount.
> Am alternative method is needed.

Not really. You need to use 2-56 T-nuts and cap screws, available from Micro
Fasteners in quantity, or in a good RC hobby shop from DuBro. You may need
to file the nuts down to fit. I've done it.

I'll agreethat it is hard to do for a 38mm model and a 38mm motor :-)

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

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

 
 
 

LOC Legacy: Motor mount suggestions?

Post by The Silent Observe » Wed, 14 Oct 1998 04:00:00


Quote:


> > Kaplow Klips are the way to go. You could try friction fitting, but with a
> > rather expensive casing involved, why take chances, right?

> Time for my semi annual rant: Why is it that no one worries about the safety
> issue of ejecting an expendable casing, which usually goes with a lawn dart
> for the rest of the rocket, until that casing is worth $$$ that you don't
> want to lose. I use the Klips on all large motors, expendable or reload. The
> PVC system in a recnet Sprocket will also retain any kind of motor, and
> can't slip out of the way like estes/at clips can and occasionally do.

One (the author) might also mention that the system is cheap, can be
retrofitted on rockets with protruding motor mount tubes, and I'm
working on a version that will clip into the Gorilla Lock slots on a
North Coast centering ring...

--
 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://members.aol.com/silntobsvr/launches.htm

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

 
 
 

LOC Legacy: Motor mount suggestions?

Post by Thomas W. Co » Fri, 16 Oct 1998 04:00:00


Quote:

>Yo!

>Ok I just started putting together my first LOC brand rocket, a
>Legacy. I must admit that I was a bit surprised to find that it
>doesn't contain any motor hooks or blocks. THEY say its because
>of the difference in the various types of engines. I suppose it
>is true, but still, it's a bit annoying.

>Does anyone have any suggestions on what I should do? I plan to
>be flying this thing on F class engines from Aerotech. What I'm
>most anxious about is not blocking the motor from ramming up in
>the body tube, but from it coming out during the ejection phase
>from the rear of the rocket. Should I just go ahead and get one
>from another kit or does anyone have a good homebrew suggestion
>that doesn't require cannabilizing<sp?> another rocket?

The method I've switched to lately is to use 1/8" aluminum "stud"
screws - the kinds with a slotted head on both ends. (see horrid
ASCII art)

 /|                     |\
|  ---------            | |
 >          |  \\\\\\\\\ <
|  ---------            | |
 \|                     |/

I use a hacksaw to take the head off the female end and epoxy that
into a hole drilled in the aft CR, flush with the aft end of the
motor tube. This won't work for all configurations, but it was a
good match for my LOC Legacy and a scratch-built 29mm tube fin
bird.

 ___                                   ___
{___}---------------------------------{___}

 | | NAR #70605, L2, TAR-NAR           | |
 |_| http://www.pagesz.net/~twcox      | |
{___}---------------------------------{___}