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IO-360-N1A Engine Installation and Operation Manual
Appendix A
© 2016 Avco Corporation. All Rights Reserved
Page 48
February 2016
Table A-3
Accessory Drives for IO-360-N1A Engines
Accessory
Drive
Type of
Drive
Direction
of Rotation
Drive Ratio
Maximum Torque
Maximum
Overhang
Moment
(in.-lb)
Continuous
(in.-lb)
Static
(in.-lb)
Starter
SAE
Counter-
clockwise
16.556:1
--
450
150
Alternator
SAE
Clockwise
3.20:1
60
120
175
Dual
Alternators
Optional
SAE
Clockwise
3.80:1
60
120
175
Accessory
Drive #1
AND20000*
Counter-
clockwise
1.3:1
70
450
25
Accessory
Drive #2
AND20000
Clockwise
1.3:1
100
800
40
Tachometer -
Optional
SAE
Counter-
clockwise
0.5:1
7
50
5
Propeller
Governor
AND20010**
Clockwise
0.895:1
125
1200
40
Freon
Compressor
SAR
Clockwise
1.462:1***
Limited by belt
--
* Except for torque limitation and rotation
** Except for torque limitation
*** With compressor pulley diameter of 6.00 inches
For any possible additional optional starters and alternators, refer to the latest revision of Lycoming
Service Instruction No. SI-1154.