Husky performance numbers
- Thread starter Frequent_Flier
- Start date
GeorgeMandes
Registered User
Homer, Alaska
2320 rpm in the Carbon Cub
spinner2
FRIEND
Montana
I see ground speeds in the low 90's (mph) with my CC at 2350 and about 6 gph fuel burn. I changed to the new Catto 80x50 prop too.
Sent from my iPhone from the middle of nowhere using Tapatalk
How fast is a huskie then on the same 6 gph fuel burn? (assuming the same fuel burn should be about the same power)
Just thinking how much of the speed is the wing vs how much is the constant speed prop?
MainlandCub
Registered User
New Zealand
2300 at 8000 ft; (80 hp - max. continuous) is 4.8 gph according to the CC11-160 AFM available from their website.
spinner2
FRIEND
Montana
MainlandCub is right, it depends on manifold pressure. The AFM he refers to has a chart for % of horsepower at different altitudes. I developed a similar chart but using manifold pressure rather than altitude. And since my plane is EAB (not E-LSA) I don't care about the 80 hp rule.
At 2400 RPM and 18.9" of MP I burn 5.6 gph and at 19.9" it is 6.0 gph. These numbers are from my chart. My earlier post was from memory.
Throttled back to 2000-2100 RPM's and lower manifold pressures the gph flow is in the 3.1 - 4.5 range with ground speeds in the 70's.
And as I indicated earlier that rpm range, depending on altitude, will give me ground speeds in the low 90's mph. And my CC is not a clean Cub with 31's, 3" ext. gear, safety cables, Baby Bush wheel and Dodge long step.
GeorgeMandes
Registered User
Homer, Alaska
Husky burns less gas than the Carbon Cub at the same speed. Engine management is easier with the Husky's Lycoming, as the CC is more sensitive to mixture, carb ice and high CHT's.
This morning, my wife flew from CNY to BZN (430 nautical miles) in the 180 horse Husky, in 4 hours, 30 minutes, cruising at 8,500 to 11,000 feet, using 31.7 gallons of fuel, landing with 18.3 gallons of reserve fuel.
kase
SPONSOR
Billings MT
I tried it and didnt like it. Sounds like the engine is lugging or bogged down. Is there any way to get more cabin heat?
skywagon8a
MEMBER
SE Mass MA6
My replica wide body PA-18 with a 180 hp IO-360 on floats will indicate 120 mph at 24"/2450 rpm using a Whirlwind 200G propeller. Airspeed indicator is confirmed accurate. With this knowledge, it seems to me that a PA-18 and a Husky with the same engine and prop are pretty much the same in cruise speed.
mvivion
FOUNDER
Bozeman,MT
Pete,
I have thought for some time that the cowling design also has something to do with the speed of the two aircraft. Consider that the original SC has very large cheek cowl doors, that stick out a long ways. These have to create a good bit of drag. The Husky has no such openings, so that portion of the cowl is a lot cleaner. The WIDE BODY cubs also have much smaller "cheeks", which may contribute to differences in speed.
Or not. :smile::-?
MTV
MainlandCub
Registered User
New Zealand
fobjob
MEMBER
Salt Lake City, Utah
It's listed as a 'modified Clark Y/USA 35B' ....The cub airfoil is a 15% USA 35B increased to 15.6%, I read somewhere (in this universe) that the Husky designers took the standard hi-lift airfoil of the cubs and other aircraft(?) and made the nose pointy-er to let it fly a little faster....??
mvivion
FOUNDER
Bozeman,MT
I didn't intend to suggest that the cowling was the only difference that might contribute to a speed difference.....angle of incidence of the wing is clearly a factor as well, and that's PROBABLY what makes up the majority of the difference in speed between the PA-18 and PA 12.
MTV
MTV
skywagon8a
MEMBER
SE Mass MA6
Mike,
I don't have any interior in mine. When I place my hands on the inside of the fabric below and ahead of the doors (both sides) I can feel the heat from the engine. Maybe I'm getting a little bit of extra jet thrust from the hot air? :smile:
