Possible engine for RV9?

dicel87 · #1 02-22-2005, 05:20 PM

http://www.usjabiru.com/jabiru_3300.htm

I know Jabiru put one of their 170 HP engines in an RV6 with decent results, but has anyone thought about the 120 HP version for a RV9?

Scott

ronoc74 · #2 02-22-2005, 07:22 PM

I think it would be less efficient than, for example, an O-235, because the 120hp comes at 3300rpm instead of the more typical 2700-2800. A small fast-turning propeller is less efficient than a larger and slower one. Also it might simply be too little weight in the nose.

Regards,
Conor
RV-9A #90990 wings

dicel87 · #3 02-23-2005, 05:34 AM

Yes good points. I looked at the HP to RPM piece but hadnt even considered the weight difference. The Jab is 178 while the Lyc is about 215...thats nearly 40 lbs.

Scott

thallock · #4 02-23-2005, 11:12 AM

Wait a second. Did I read this right? You are saying you wouldn't use the Jabiru because it doesn't weigh enough? Very funny.

jerry driskill · #5 02-23-2005, 03:37 PM

No, he's saying he wouldn't use the jabiru because it would adversly effect the weight and balance by moving it to the rear.