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All Rocksim DesignsTag - Designer:Ken MontayneTag - Designer:Vern EstesTag - Family:Estes:Big BerthaTag - Manufacturer:Estes (41 of 367)Tag - Motor Size:18 mmTag - Power:Low-PowerTag - Recovery:ParachuteTag - Skill Level:1Tag - Style:Sport

Big Bertha Rocksim Design File

• Designer: Ken Montayne
• Designer: Vern Estes
• Family: Estes : Big Bertha
• Manufacturer: Estes
• Motor Size: 18 mm
• Power: Low-Power
• Recovery: Parachute
• Skill Level: 1
• Style: Sport

Comments: Weights and CG as built by GA Dean

Designer: Estes (Based on popular Estes "Big Bertha)

Download estes_babybertha.rkt

To use the design file above, you need a copy of Rocksim, a rocket design and simulation program.

Kit Name: Estes - Baby Bertha {Kit} (1261) [2002-]
Diameter: 1.6400 inches
Length: 12.7500 inches
Style: Sport

CG: 6.3000 inches from front
CP: 7.4014 inches from front
Margin: 0.67 Marginal

Parts Breakdown

• Big Bad Bertha Elliptical Nose Cone
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 7.50 in]
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 2.75 in]
• Estes 30162-2 Ring
• Estes Engine hook Standard size Mass Object
• Estes 30125 Ring
• Estes 30125 Ring
• Estes Polyethylene LDPE Parachute (12.00 in)
• Custom Mass Object
• Big Bertha Freeform Fin Set Freeform Fin Set
• Estes ESTES 2321 Launch Lug
• Custom Mass Object
• Custom Mass Object

What You Can Do

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