Engine Data Sheets
Mechanical Data tables

Principal Aero Engines of 1910 Page 147
N/A = Not Applicable --- NA = Info Not available
Rotary Engines Section 1
Maker Gnome Gnome Gnome International International ---- ----
Cooling Air Air Air Air Air ---- ----
No of Cyls 5 7 14 4 6 ---- ----
Bore/Stroke 3.94" x 3.94" 4.33" x 4.73" 4.33" x 4.73" 3.74" x 2.52" 5" x 3.98" ---- ----
Ratio - Stroke to Bore 1 1.1 1.1 0.67 0.8 ---- ----
Operating rpm 1300 1200 1200 1500 1500 ---- ----
Piston Speed 850 ft/min 950 ft/min 950 ft/min 630 ft/min 1000 ft/min ---- ----
Brake HP 34 61.5 123 21.5 66 ---- ----
Weight lbs 132 165 220 80 130 ---- ----
lbs per bhp 3.9 2.7 1.8 3.7 1.9 ---- ----
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Let me know if any of the above does not read true, or if you have information that does not agree.
Wherever possible, I will update these pages on a regular basis as data comes in.

• Main • Data Table Menu • Page 146 •

Principal Aero Engines of 1910 Page 147
N/A = Not Applicable --- NA = Info Not available
Rotary Engines	Section 1
Maker	Gnome	Gnome	Gnome	International	International	----	----
Cooling	Air	Air	Air	Air	Air	----	----
No of Cyls	5	7	14	4	6	----	----
Bore/Stroke	3.94" x 3.94"	4.33" x 4.73"	4.33" x 4.73"	3.74" x 2.52"	5" x 3.98"	----	----
Ratio - Stroke to Bore	1	1.1	1.1	0.67	0.8	----	----
Operating rpm	1300	1200	1200	1500	1500	----	----
Piston Speed	850 ft/min	950 ft/min	950 ft/min	630 ft/min	1000 ft/min	----	----
Brake HP	34	61.5	123	21.5	66	----	----
Weight lbs	132	165	220	80	130	----	----
lbs per bhp	3.9	2.7	1.8	3.7	1.9	----	----
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