Engine

Question 0

How many cylinders?

Answer 0

14, double row with pressure type carburetor

Question 1

What type of engines does Lil have?

Answer 1

Four Pratt & Whitney R-1830 engines

Question 2

What is the reduction ratio?

Answer 2

16:9

Question 3

Carburetors?

Answer 3

Pressure type
Supercharged with internal blower
No turbo super chargers
Engine primer injects fuel into supercharger blower section

Question 4

What is the horse power?

Answer 4

1200 at max power (47”/2700) (5 min max)

1100 at METO (43.5”/2600) (15 min max)

Question 5

Propellers

Answer 5

Hamilton Standard
3 bladed constant speed
Full feathering

Question 6

Describe feather procedure

Answer 6

Push feather button, when prop reaches full feather, button pops out.

If button fails to pop out, the prop will go to feather and unfeather.

Manually pull out the button if this happens

Question 7

How do you unfeather?

Answer 7

Press feather button until 800rpm and then release

Monitor RPM closely to avoid overspeed

Question 8

Mixtures, what are the three positions?

Answer 8

Idle cut off
Auto lean
Auto rich

Question 9

Magnetos

Answer 9

R,L, both and cut off
Off is briefly selected during shutdown to make sure they are grounded
R and L are tested during run up to ensure both are firing

Question 10

Primer

Answer 10

Shoots fuel into the supercharger blower section (empeller)

They are electric

Question 11

Cowl flaps

Answer 11

Electric
Positions: open, off, closed
Open on ground
Trail for takeoff (50% open)
Trail for cruise

Question 12

Carb heat

Answer 12

Center console
Open
Off 
Close
No position indicators
Hold in cold position long enough to ensure full cold then return to off

Question 13

Engine indicators

Answer 13

Manifold pressures

Tachometers

Question 14

Cylinder head temp gauge

Answer 14

Two dual indicating gauges

Thermo couple installed under the spark plug of no 1 cylinder of each engine

Question 15

Fuel pressure gauges

Answer 15

Two dual indicators
Show fuel pressure at the carburetor in pounds per square inch
Pressure transmitters located in engine nacelles

Question 16

Oil Pressure Gauges

Answer 16

2 dual indicators

Pressure transmitters located in each engine nacelle

Question 17

Oil temp gauges

Answer 17

On same gauge as the oil and fuel pressure gauges

Temp gauge in each engine oil sump

Question 18

Chip detector

Answer 18

8 bulbs
Upper four correspond to magnetic plugs in nose case
Lower four to the main sumps or main engine oil screen
DC electrical system supplies power to the detectors

Question 19

Starters

Answer 19

Direct crank electric starter

Can be shut off by starter interrupter switches on FE panel

Question 20

Engine interrupter switches

Answer 20

Four
Remove power from starter and feathering pump
Except for #1: starter only not feathering pump

Question 21

Magnetos

Answer 21

Bosch
Mounted on front of each engine - two
Left / Right
Do not use one mag above 33” = detonation if done too long

Question 22

Induction system

Answer 22

Integral superchargers

Pressure ejected carburetor

Question 23

Oil - how many systems?

Answer 23

4 independent systems

Question 24

Oil
Capacity
Min

Answer 24

Service to max 28 gallons

Min for flight is 20 gallons

Question 25

Operation of oil system

Answer 25

Oil flows from tank by gravity and suction to engine driven pumps

After oil flows through engine to lube and cool. It flows to sump.

Scavenge pump picks up oil and forces it through the cooler and back to the tank.

Engines 1&3 have air wolf oil filter prior to oil cooler

Question 26

Oil specs

Answer 26

Engine 1: SAE 60 120 AD
Engines 2,3 & 4: SAE 60 weight non detergent straight mineral oil

50 weight can be used as an alternate

Question 27

Where is the oil cooler?

Answer 27

Below each nacelle

No controllable doors

Question 28

Feathering Oil

Answer 28

Each tank has a stand pipe

5 gallons