This is a BT-20 minimum diameter 2-stage rocket. Designed by Ric Wilson, it appeared in an early Estes design book.
| Designer: | Ric Wilson |
| Diameter: | 0.74 inches |
| Fin Material: | Balsa |
| Length: | 13.30 inches |
| Main Body Tube: | BT-20 |
| Manufacturer: | Plan |
| Motor Size: | 18 millimeters |
| Nose Cone Material: | Balsa |
| Plan (JimZ): | http://spacemodeling.org/jimz/eirp/eirp_09.jpg ![]() |
| Power: | Low-Power |
| Product Type: | Plan |
| Recovery: | Parachute, Streamer |
| Status: | Out-Of-Production |
| Style: | Multi-Stage |
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