Retainers

Bell-Shaped Nozzle Retainers | Qwik-Lok | Threaded Slimline Retainers | JB Weld | Classic Slimline Retainers | Slimline Tailcone Retainers | GL Motorholder



DON’T TAKE CHANCES!! HERE’S WHY SLIMLINES ARE BETTER:

-THE GLUEING (MATING) SURFACE OF SLIMLINES ARE GROOVED WITH FINE THREADS FOR BETTER ADHESION. CAUTION: SMOOTH ALUMINUM SURFACES DO NOT ADHERE WELL. WE LEARNED... THE HARD WAY.

-MATING SURFACE ON OTHER RETAINERS IS ONLY 3/8” LONG. SLIMLINES ARE 1/2”. THAT OFFERS 25% ADHESION SURFACE.

-ALL THREADED SLIMLINES FEATURE INTERNAL THREADS AND SO ARE PROTECTED DURING TRANSPORT. CAUTION: EXTERNAL THREADS ARE SUSCEPTABLE TO DAMAGE - - AND ONCE YOU DAMAGE THE THREADS, YOU HAVE AN UNUSABLE RETAINER THAT IS GLUED TO YOUR ROCKET.

-ALL SLIMLINES (CLASSIC, QUIK-LOK, TAILCONES, ETC.) FEATURE AN INTERNAL RING OR CAP THAT DOES NOT OVER HANG THE MOTORTUBE. THAT’S WHY THEY’RE CALLED “SLIMLINES”.

Slimline..........success is in the details.





Now in Silver... ...or in Black!

Giant Leap Rocketry introduces a new retainer that's shaped like a nozzle! The aft end of your rocket will look like the real thing. It works exactly like the standard threaded Slimline, except it adds realism and beauty to the look of your rocket. The nozzle retainer adheres to the motor tube just like other slimlines.

Installation is easy - - there's a built-in stop inside the retainer that butts up against the motor tube. Just insert your motor.... ...and thread down with retaining ring...and go fly. That it!!

Works with Cesaroni Motors!

See the GREAT review in EXTREME ROCKETRY magazine!!!

System includes base, tool, threaded ring (same ring and tool as used on plain threaded system). If you already have a ring and tool, all you need is a base for each rocket.

38mm System $36.72 Black Base $23.40 Silver Base $23.40 Threaded ring $12.74 Extraction tool $4.21


The easy-to-use threaded retainer in 38 and 54mm!

NO TOOLS REQUIRED!

Why is Slimline Qwik-Lok the better choice?

  1. It's "Slim". The threaded ring doesn't over hang the retainer. It's sleek and thin.
  2. The body of the base is also sleek and slim, which looks better and offers less drag.
  3. High quality, finely-machined threads. No coarse "pickle -jar" threads here.
  4. Compatible with the existing Slimline threaded retainer.
  5. No Tools required. Just thread it on by hand.
SLIMLINE QWIK-Lok 38MM SYSTEM $31.99
SLIMLINE QWIK-Lok 38MM RING ONLY $14.99
Works with existing 38mm bases (see below for threaded bases)
QWIK-Lok 54MM - -The best system on the market! NO TOOLS! SLIMLINE QWIK-Lok 54MM SYSTEM $33.99 or ring only for $15.99
Works with existing 54mm threaded bases (see below for threaded bases)

Slimline - - the Best Retainer in Rocketry


Internal thread. Available in 29, 38, 54mm (no flange) Also available in 76 and 98mm (has flange)

Flange goes behind aft centering ring
for a rock-solid mounting.
On the 76 and 98mm versions, there is a flange
that goes behind the aft centering ring for rock solid retention!
You'll need a rear ring with a slightly oversized inner hole.
These are available from Giant Leap.  For minimum diameter
application, flange can be ground or cut off.
The 29, 38, 54mm versions have no flange.

AFTER INSERTING YOUR MOTOR, JUST
THREAD ON THE PRECISION-MACHINED RING 		……AND THEN TIGHTEN, AND GO FLY!

The Best of Both Worlds

                                  ...and then some.

Slimline is the new standard in motor retention. The name SLIMLINE can be found at almost every launch site around the world. The classic Slimline uses the well-known snap-in ring to prevent the motor from falling out. It's an overwhelming success and will remain an important part of our line. But some flyers prefer a threaded-type motor retainer. To answer their call, Slimline Motor Retainers now come in a threaded version

but with an important improvement...
This avoids the extra drag and added bulk of motor retainers with external rings. The THREADED RING is on the inside! With the ring threading on the inside, the retainer keeps it's sleek, simple design, and it's low cost. It lives up to the name.......SLIMLINE!!!

How does it work?

The Threaded Slimline is comprised of three things;

  1. A base (or retainer),
  2. A threaded ring (or closure), and
  3. An extraction tool (not completely necessary, but makes life simpler).

The base (retainer) glues to your motortube (you'll need about 1/2" of motortube sticking out). We recommend JB Weld. Then insert your motor and secure with the ring (or closure). That's it.

Works with Aerotech and Cesaroni Motors!

Once you get an extraction tool and a threaded ring (closure) in a given size, all you need for additional rockets are bases (retainers). Starter Packs:
.....includes one base, threaded ring, and a tool. After that all you need for the rest of you rockets (in any motor size) is another base.
29mm $27.99
38mm $32.99
54mm $33.99
75mm $40.50
98mm $42.59

Individual systems:
29mm SystemBase $20.20 Threaded ring $11.67 Extraction tool (also fits 38mm) $4.21
38mm SystemBase $21.27 Threaded ring $12.74 Extraction tool (also fits 29mm) $4.21
54mm SystemBase $22.33 Threaded ring $13.81 Extraction tool (fits 54mm only) $4.25
75mm SystemBase $26.64 Threaded ring $17.05 Extraction tool (for 75/98mm only) $4.25
98mm SystemBase $27.71 Threaded ring $18.11 Extraction tool (for 75/98mm only) $4.25

Remember, you don't need to purchase a threaded ring and extraction tool for every rocket you own of a given motor size. If you have four rockets with 38mm motor tubes, you need four 38mm bases, but only one or two rings and a single extraction tool.

Threaded Slimlines are compatible with all existing snapring Slimline Adapters. Soon to follow: Threaded Slimlines in larger diameters, tailcones, and adapters.

Technical note on Slimlines:

Slimlines are made to fit standard industry motors such as Aerotech and Pro38, Pro54...,etc. Once your Slimline is set up to retain these motors, they will retain all standard high power motors in that diameter.
However, this does not apply to Kosdon and Animal Works motors (AMW), which unfortunately have a different thrust ring arrangement.

  1. The external thrust ring on Kosdon and AMW is wider than on all other motors in high power rocketry. The external thrust ring on these motors overhangs the motortube by a about 4 thousands of an inch and will need to be ground down slightly in order to make it fit. This is possible and has been done frequently by our customers.
  2. The placement of the thrust rings on Kosdon and AMW motors is also nonstandard with all other motors. The distance between the aft end of the motor and the external thrust ring is longer than on all other motors in high power. So once the Slimline is set up for a Kosdon or AMW, it will not retain other motors.
No Slimline adapters will work with Kosdon or AMW motors.

JB Weld

Giant Leap Rocketry recommends the use of JB Weld for Slimline retention systems and for Acme rail guides and lugs. It's comes in two parts and when mixed in equal amounts, it turns hard as steel. It has a heat rating of 500F (compared to about 150 F for most epoxies).

$5.85

(circle ring style)

The SLIMLINE motor retainer:
How strong is the retaining
ring in the Slimline?

At LDRS 2002 in Amarillo, a
motor CATOED (blowed up real good).
As a result of the explosion, the
motor casing was laid flat....torn
absolutely wide open. But the
Slimline on the rocket remained
intact, and the retainer ring
never let go. That's how strong
a Slimline is!!

It works on a similar principle to the Aero Pack retainer, but features an easy-to-use circle ring that snaps into a groove on the inside of the base (or sleeve). The creates several advantages. It reduces the maching costs, thereby drastically lowering the price. The SLIMLINE also has less aerodynamic drag compared to other retainers. SLIMLINES are designed and priced great for everyday rockets. For minimum diameter and boat tails, they are unmatched!

All SLIMLINES work with Aerotech and Cesaroni motors, and have a spacer ring to accomodate KOSDON, Ellis Mountain, and Hybrid motors too!

The matching SLIMLINE adaptes are now available. Like the retainers, these are black anodized aircraft-grade aluminum (6061-T6). The adapters nest inside existing SLIMLINES, and have their own retainers built-in. Finally, a fully integrated system.

HOW TO INSTALL AND USE THE SLIMLINE:

When assembling your rocket, be sure to leave 1/2" of motor tube sticking out the aft ring.
Glue on the SLIMLINE with a strong heat resistant adhesive

Insert motor
Snap the retaining ring into the groove by hand. PRESTO, YOU'RE READY TO FLY!!
You can remove the retaining ring by lifting one end out of the groove with a screw driver or pen knife. Then simply remove the ring by hand.  It's that simple!

Check out these unbeatable prices:

54mm... $23.40
38mm... $22.33
29mm... $21.27
CHECK OUT THE SLIMLINE MOTOR ADAPTERS

LARGE SLIMLINE MOTOR ADAPTERS ARE NOW IN!

"I got my Slimline motor retainer last week and this looks to be a nifty little deal. Nice and light......These little things look to be the best thing since sliced bread! "

Geoff Stanford

Congratulations on your article on Rocketry Online for your new Slimline motor retention system. Great article, Great product. Keep up the good work!

Steve Kennedy

...the Slimline system looks very nice. I may be in the market for one or two of those before our fall season starts up. I'll let you know.

Ted Proseus


So Beautiful, So Simple


Slimline Tailcone Retainers give you a sleek, low drag look. As with all Slimline Retainers, the motor is inserted into the motor tube and then secured with a circle ring.
A greate way to finish the aft end of a rocket.

Your motor tube is glued to the machined grooves inside the tailcone. Use JB Weld or other heat-resistant epoxy. Will accept Slimline Motor Adapters, too!
The inside is machined hollow to reduce weight.
NEW - - OGIVE (ROUNDED) STYLE TAILCONES!!!

 
 
Tailcone Retainer Prices
54-38mm... $21.27
54-38mm Ogive... $21.27
76-54mm... $24.47
76-38mm... $24.47
76-38mm Ogive... $24.47


Giant Leap's Motorholder uses stainless steel construction! Add Motorholders to your existing rocket fleet with the retrofit kit.
  • A STRONG double-clamp system to stop your motor from blowing out.
  • Don't waste money with other systems.
  • Don't waste time "rigging" your own.
  • Now with easy-to-cut spacers!
Two stainless steel clamps, bolts, washers, spacers and tee-nuts: $8.27

Retrofit kit - for use in pre-built rockets!: add $2.06

"Thanks for getting my order out so fast! I'll definitely be doing more business with you!"

Mike Chrystof

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"NOMEX is a registered trademark of E.I. du Pont De Nemours and Company."
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