| Semroc Motor Mounts |
| SLS Laser-X Motor Mounts |




| Motor Hooks A motor hook is used to positively retain the model rocket motor in the body tube or motor mount tube, but allow for the easy removal of the casing at the end of the flight. |

| Mini "13mm" 13mm Motor Hook 1.75" .55 Each |
| Large "E" 24mm Motor Hook 3.75" .75 Each |

| Standard "A,B,C &D" 18/24mm Motor Hook 2.75" .65 Each |

| Standard "A,B,C &D" 18/24mm Motor Hook 2.75" Pack Of 10 Buy It Now 6.00 |
| For increased value we now offer a 10 pack of our standard 18/24mm 2.75" motor hooks. |
| Motor Block And Thrust Rings |
| Other Engine Mount Accessories |
| Motor Mount Tubes |
| Centering Rings |

| BT50 to BT55 Package Of 10 Retail Price 3.00 Buy It Now 2.50
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| Motor Block/Thrust Ring Used for preventing your motors from being inserted too far forward in the motor tube. Perfect fit into a body tube. These make great replacements for rebuilds, and are perfect for using in motor mounts of scratch built kits. Manufactured in the U.S.A these are the same high quality parts they use in commercial rocket kits. They come packaged in multiples of 10 (29mm pack of 5) . So pick up a few to throw in the parts box. BT5, BT20 Or BT50 Retail Price 3.00 Buy It Now 2.50 |
| Motor Block/Thrust Ring BT5 Package Of 10
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| Motor Block/Thrust Ring BT20 Package Of 10
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| Motor Block/Thrust Ring BT50 Package Of 10
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| 5 Pack 29mm Engine Blocks Pack of 5 for 29mm engines tubes Retail Price 2.50 Buy It Now 2.00 |

| Motor Block 29mm Tube Package Of 5
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| Clip Whips |
| 2 Engine Clip Whip Retail Price 15.49 Buy It Now 14.71
|
| IMPORTANT: Anytime you are designing a cluster model or converting a model from single motor to cluster motor use you need to verify the stability of your model before flight. Adding more motors to the model increases the weight in the rear of the model moving the Center of Gravity (CG) further back and may cause instability in your model. If you are converting a known stable model, the easiest method to assure stability is to fully load the unmodified model for flight (motor installed, recovery device, etc) and balance this model on your finger. This balance point is the CG of your model and you should mark this. Then install the cluster engine mount and prep your model for flight again. You will note that the CG has moved towards the back of the model. Add nose weight to the nose cone until you have moved the CG back to its original point. If you are designing your own model you should make yourself aware of model rocket stability and the relationships between the Center of Gravity and the Center of Pressure and how to measure both. |
| Empty Motor Casing 18mm Package Of 6 Buy It Now 1.00
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| Empty Engine Casings |
| Use this to add 2 stage capability to the Centurion, Vega, Goliath, etc. |
| It is an old design that uses the OOP A10-0T to add 2 stage capability to the Centurion, Vega, Goliath, etc. Since Estes announced the revival of the A10-0T booster engine. Stages at about 30 feet and adds about 100 feet to the altitude. |
| Add On Engine Mount Booster-16 For Mini 13mm Motors. Buy It Now 5.00
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| 24mm 2.75" Long (D) Retail Price .40 |
| 24mm 3.75" Long (E) Retail Price .40 |
| 18mm 2.75" Long Retail Price .40 |
| 13mm 1.75" Long Retail Price .40 |
| Single Pack |
| Motor Mount Tubes are manufactured to be exact replacements. Fits Standard Body Tubes Very High Quality Material. |
| 5 Pack |
| 13mm 1.75" Long Retail Price 1.50 |
| 18mm 2.75" Long Retail Price 1.50 |
| 24mm 2.75" Long (D) Retail Price 1.50 |
| 24mm 3.75" Long (E) Retail Price 1.50 |
| 10 Pack |
| 13mm 1.75" Long Retail Price 2.50 |
| 18mm 2.75" Long Retail Price 2.50 |
| 24mm 2.75" Long (D) Retail Price 2.50 |
| 24mm 3.75" Long (E) Retail Price 2.50 |
| Booster 8 For Excalibur |
| Buy It Now 4.00 |
| Estes Engine Adapters |
| Booster 18 For Maxi Micron |
| Buy It Now 4.75 |