[Sport Flyer]

Dynon skyview 10" display - 2.1 amps
Dynode skyview 7" display - 2.6 amps
Dynon GPS Antenna - 0.1 amps
Dynon ADAHRS - 0.15 amps
Dynon ADS-B - 0.2 amps
Dynon C25 Com Radio - 3.0 amps
Dynon intercom - 0.1 amps
Dynon Xpndr mode- S Class 1 - 0.4 amps
Dynon backup battery - 1.0 amps
Dynon engine monitoring module - 0.11 amps
Dynon A/P module - 0.05 amps
Dynon WI-FI adapter - 0.1 amps
USB charging jack - 2.1 amps if charging I- Pad
ELT- 406 - 0.2 amps
Dynon SV-42's servos (pitch & roll) - 4.0 amps
Whelen - microburst lll - strobes - 1.2 amps
Whelen - microburst lll - Nav lights - 0.25 amps
Ray Allen trim servo - 1.0 amps
Facet electric fuel pump - 1.4 amps
LED landing lights - 0.2 amps

TOTAL Amperage: 20.26 (Rotax internal alternator only)
Obviously not all avionics would not be on all at the same time.
Landing: 11.52 amps @ 3,000 RPM in the pattern
Take-Off: 13.11 amps full power
Cruise: 14.21 amps if flying with A/P on
I would like anybody's thoughts and opinions on this subject. I reviewed the power curve in the Rotax manual and based on the different power setting it could handle the amperage that I am looking for. Thanks and look forward to hearing from some experienced Builders out there.

 

[bhassel]

If in doubt there are options. Rotax has an additional alternator mount point on the geared prop housing. There's also this alternative External Alternator for the Rotax

Bob

 

[Bill_H]

For a lot of detail, Search the RV12 forum using the term Dual Skyview. Particularly see this thread. http://www.vansairforce.com/community/showthread.php?t=80077