RV-4 with 13B Mazda Renesis engine
RV-4 FWF weight with Mazda RX-8 Renesis engine
I finally got to the point where I could unbolt the engine mount with complete engine installation from the fuselage.
Has anyone unbolted a complete 180 HP Lycon engine installation with engine mount and weighed it? I would like to compare with my numbers.
Engine filled with oil (5 quarts) and coolant (6 quarts 50/50 water/glycol).
No prop. Gear legs mounted.
370 pounds on digital bathroom scale.
-30 pounds for gear legs
----
340 pounds.
Estimate I'll add 20 pounds for spinner/prop/crushplate/bolts
Lower cowling now weighs 10.4 pounds after adding long duct for oil cooler. Of course I didn't weigh it before that
Upper cowling 5.1 pounds.
Probably a few more pounds when filled/painted.
So looking at less than 380 pounds for everything forward of firewall (not including battery).
I made some notes about engine mount weight (10.58 and 25.62) but now have no clue as to what that included. Before or after trimming off the dynafocal ring?
Should I engage on a weight reduction program or am I in the ballpark?
Finn
Pictures:
https://drive.google.com/open?id=1d3nLnxBYOlyFeQgk9xGLhBtn_lMien_l
RV-4 FWF weight with Mazda RX-8 Renesis engine
I finally got to the point where I could unbolt the engine mount with complete engine installation from the fuselage.
Has anyone unbolted a complete 180 HP Lycon engine installation with engine mount and weighed it? I would like to compare with my numbers.
Engine filled with oil (5 quarts) and coolant (6 quarts 50/50 water/glycol).
No prop. Gear legs mounted.
370 pounds on digital bathroom scale.
-30 pounds for gear legs
----
340 pounds.
Estimate I'll add 20 pounds for spinner/prop/crushplate/bolts
Lower cowling now weighs 10.4 pounds after adding long duct for oil cooler. Of course I didn't weigh it before that
Upper cowling 5.1 pounds.
Probably a few more pounds when filled/painted.
So looking at less than 380 pounds for everything forward of firewall (not including battery).
I made some notes about engine mount weight (10.58 and 25.62) but now have no clue as to what that included. Before or after trimming off the dynafocal ring?
Should I engage on a weight reduction program or am I in the ballpark?
Finn
Pictures:
https://drive.google.com/open?id=1d3nLnxBYOlyFeQgk9xGLhBtn_lMien_l
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