Engine Data Sheets
Mechanical Data tables

Principal Aero Engines of 1910 Page 146
N/A = Not Applicable --- NA = Info Not available
Vertical Engines Section 3
Maker NEC
(Two-Stroke) Panhard Panhard Panhard Renault Renault (Airship) Vivinus
Cooling Air Water Water Water Water Water Water
No of Cyls 4 4 4 4 4 4 4
Bore/Stroke 4.48" x 3.98" 7.28" x 7.88" 6.69" x 6.69" 4.92" x 5.91" 4.33" x 6.3" 4.57" X 5.91" 4.17" X 4.73"
Ratio - Stroke to Bore 0.89 1.08 1 1.2 1.45 1.3 1.14
Operating rpm 1500 900 900 900 1100 1300 1600
Piston Speed 1000 ft/min 1180 ft/min 1000 ft/min 885 ft/min 1155 ft/min 1280 ft/min 1260 ft/min
Brake HP 69.6 112 90 48.50 38.5 42.5 32.5
Weight lbs 290 836 523 466 286 880 Not Given
lbs per bhp 4.15 7.5 5.8 9.6 7.4 20.7 Not Given
----------------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- -----------------
Vertical Engines Section 4
Maker Vivinus Vivinus Wright ---- ---- ---- ----
Cooling Water Water Water ---- ---- ---- ----
No of Cyls 4 4 4 ---- ---- ---- ----
Bore/Stroke 4.42" x 5.12" 4.53" x 5.12" 4.25" x 4.33" ---- ---- ---- ----
Ratio - Stroke to Bore 1.16 1.13 1.02 ---- ---- ---- ----
Operating rpm 1600 1800 1200 ---- ---- ---- ----
Piston Speed 1365 ft/min 1535 ft/min 870 ft/min ---- ---- ---- ----
Brake HP 37.5 39.2 32.5 ---- ---- ---- ----
Weight lbs 336 280 176 ---- ---- ---- ----
lbs per bhp 9 7.1 5.4 ---- ---- ---- ----
----------------- ----------------- ----------------- ----------------- ----------------- ----------------- ----------------- -----------------

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 145 • Page 147 •

Principal Aero Engines of 1910 Page 146
N/A = Not Applicable --- NA = Info Not available
Vertical Engines	Section 3
Maker	NEC (Two-Stroke)	Panhard	Panhard	Panhard	Renault	Renault (Airship)	Vivinus
Cooling	Air	Water	Water	Water	Water	Water	Water
No of Cyls	4	4	4	4	4	4	4
Bore/Stroke	4.48" x 3.98"	7.28" x 7.88"	6.69" x 6.69"	4.92" x 5.91"	4.33" x 6.3"	4.57" X 5.91"	4.17" X 4.73"
Ratio - Stroke to Bore	0.89	1.08	1	1.2	1.45	1.3	1.14
Operating rpm	1500	900	900	900	1100	1300	1600
Piston Speed	1000 ft/min	1180 ft/min	1000 ft/min	885 ft/min	1155 ft/min	1280 ft/min	1260 ft/min
Brake HP	69.6	112	90	48.50	38.5	42.5	32.5
Weight lbs	290	836	523	466	286	880	Not Given
lbs per bhp	4.15	7.5	5.8	9.6	7.4	20.7	Not Given
-----------------	-----------------	-----------------	-----------------	-----------------	-----------------	-----------------	-----------------
Vertical Engines	Section 4
Maker	Vivinus	Vivinus	Wright	----	----	----	----
Cooling	Water	Water	Water	----	----	----	----
No of Cyls	4	4	4	----	----	----	----
Bore/Stroke	4.42" x 5.12"	4.53" x 5.12"	4.25" x 4.33"	----	----	----	----
Ratio - Stroke to Bore	1.16	1.13	1.02	----	----	----	----
Operating rpm	1600	1800	1200	----	----	----	----
Piston Speed	1365 ft/min	1535 ft/min	870 ft/min	----	----	----	----
Brake HP	37.5	39.2	32.5	----	----	----	----
Weight lbs	336	280	176	----	----	----	----
lbs per bhp	9	7.1	5.4	----	----	----	----
-----------------	-----------------	-----------------	-----------------	-----------------	-----------------	-----------------	-----------------