Today's Message Index:
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1. 06:34 PM - RV-4 Weight & Balance with The Whirlwind Model 151 (Chuck Borne)
2. 08:01 PM - Re: RV-4 Weight & Balance with The Whirlwind Model 151 (rob ray)
Message 1
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| Subject: | RV-4 Weight & Balance with The Whirlwind Model 151 |
I don't know if anybody's been here yet with the WW 151 but I thought I'd
pass along some numbers regarding this setup.
First of all, I was pleased that my empty weight turned out almost in the
middle of the range I was hoping for (950-975). It ended up at 967 lbs with
the empty CG at 68.9" AOD on an O-320-powered -4. Other weight savings
items I utilized were the Odyssey PC625 (13.2 lbs.) battery (it cranks the
Sky Tec just fine) laying on its side in the left floor compartment ahead of
the wing spar, Sky Tec starter, B&C 40A alternator with Nuckoll's Z-1
electrical system and the Ellison EFS-4 throttle body injector. I even have
a full vacuum gyro panel but not set up for IFR with just a GPS/COMM and
transponder only in the center stack under the main panel.
What was interesting was the full-tank fuel burn scenario of me at 225 and a
120-lb. rear passenger (no baggage) with the CG moving aft only 4/10's of an
inch over the burn down to 5 gallons total left in the tanks. Even the
worst overloaded case of myself and a 245-lb. rear-seater had the CG a hair
forward of the aft limit (77.4") with 5 gallons left.
So it looks like the WW 151 will be a good match with this airframe. Now
for first flight! :-)
Chuck Borne
RV-4, N353CB
Vans S/N-4069
Waiting-for-FAA
Message 2
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| Subject: | Re: RV-4 Weight & Balance with The Whirlwind Model 151 |
Awesome Chuck, back in the day (1996) I gave a ride in my then 150 HP Sterba wood
propped RV4 with no paint at a whopping 935 lbs soaking wet to a 250 pounder
who helped me. I put my tool box on the pedestal bewteen my legs, full fuel
and a long runway at Newport News VA but all was for naught. The Bandit flew fine
with just a little pitch sensitivity and forward trim...Now that I am flying
the Harmon Rocket, all bets are off...bring on the big dudes!!!
(and girls...ha!)
RR
Chuck Borne <caborne3@charter.net> wrote:
st1\:*{behavior:url(#default#ieooui) } I dont know if anybodys
been here yet with the WW 151 but I thought Id pass along some numbers
regarding this setup.
First of all, I was pleased that my empty weight turned out almost in the middle
of the range I was hoping for (950-975). It ended up at 967 lbs with the
empty CG at 68.9 AOD on an O-320-powered -4. Other weight savings items I utilized
were the Odyssey PC625 (13.2 lbs.) battery (it cranks the Sky Tec just fine)
laying on its side in the left floor compartment ahead of the wing spar,
Sky Tec starter, B&C 40A alternator with Nuckolls Z-1 electrical system and the
Ellison EFS-4 throttle body injector. I even have a full vacuum gyro panel
but not set up for IFR with just a GPS/COMM and transponder only in the center
stack under the main panel.
What was interesting was the full-tank fuel burn scenario of me at 225 and a
120-lb. rear passenger (no baggage) with the CG moving aft only 4/10s of an inch
over the burn down to 5 gallons total left in the tanks. Even the worst overloaded
case of myself and a 245-lb. rear-seater had the CG a hair forward of
the aft limit (77.4) with 5 gallons left.
So it looks like the WW 151 will be a good match with this airframe. Now for
first flight! J
Chuck Borne
RV-4, N353CB
Vans S/N-4069
Waiting-for-FAA
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