• If You Are Having Trouble Logging In with Your Old Username and Password, Please use this Forgot Your Password link to get re-established.
  • Hey! Be sure to login or register!

200 horse Husky project

GeorgeMandes

Registered User
Homer, Alaska
We are working with Aviat on a lightweight 200 horse Husky, with appropriate bush mods. The challenge is that our 200 horse Husky popped out of the factory at 1,345 pounds on 8:50's, even with dope fabric treatment and an MT prop, but we are hoping for 1,300 pounds, +/-, on 31 inch Bushwheels. (By comparison, our "light" 180 horse Husky on Burl gear with 31s is between 1,300 and 1,310 pounds.) Barring some catastrophe, this plane will be inside at the AK trade show in May. A Husky is the raffle plane at the show this year and the tentative plan is for my wife and I to fly the two Huskies to Alaska in the second half of April.

Here is what we have been doing so far. The aircraft is an A1B, so we can use an MT at 2,700 rpm, instead of 2,600 as approved on the A1C (for noise), and Alpha Omega gear (which presently is only approved to 2,000 pounds on wheels). Burl's AO gear has been installed by the factory, so we have a great installation, plus weight savings over an after market installation. The 200 horse Lycoming went to Lycon for their magic, and we are hoping we are getting more than 200 horsepower. We worked with MT to get a 210 cm prop for potentially better thrust.

Our friend, Bill Baechler, is at the factory working on a bunch of post certification mods. We relocated the battery to the firewall for a savings of about 18.5 pounds (lighter battery, the cable, and hardware from the stock battery box). This should provide better cranking as well. Aviat has made carbon panels for the interior. We planned to remove exterior metal panels, and go to fabric, but ultimately weren't going to get a material weight savings because of structure required to support the fabric. Instead, the factory has made carbon panels for many of the outside panels. We have painted them for UV durability, but left the interior panels raw. We also have carbon wing tips, and for the nose bowl. The 70 amp alternator will get replaced at a B&C for almost 10 pounds of weight savings. The 200 was certified with two oil coolers, which will not be necessary in Alaska, where our problem is getting the oil temp high enough.

We relocated the single rear external baggage door to the right side of the plane, where it is adjacent to the the regular right side baggage door. Small point, but the left side door made packing involve needless trips around the plane. We eliminated the second baggage door and the second set of landing lights for weight savings. We will be using HID lights in the two existing lights.

Aviat has a pod in development, and it is nip and tuck whether it will be approved for the show. It is a big pod, with side and rear doors, and capable of 350 pounds. Here is a picture of Stu Horn, President of Aviat, and Bill Baechler lying next to it for scale.


photo.jpg


Another objective was to have lightweight VFR instruments, but a Mid-Continent electric attitude indicator to extract ourselves from an inadvertent cloud penetration. That said, we wanted to get the Garmin 696 into the panel, because it has such a useful display for a bush plane, but there was no good way to mount it. We also elected to use a Garmin SL 40 radio for the ability to monitor a second frequency. Here is the latest panel drawing, minus the skid ball located above the 696. We are also tentatively using a JPI 930 all in one engine gauge for more weight savings.

InstrumentPanel3.jpg


There is loads of work still to be done, but this is the general idea of what we are doing. We are pretty confident that this will be a terrific float and ski plane, the lack of carb ice will be great on floats, and the high output heater (not a strength of the 180 Husky) will be welcome on skis. The real question is how will it fly on wheels and we are probably several weeks away from getting an idea of its performance compared to the 180 Husky we are familiar with.
 
George,

I notice there is a "Primer" knob located on the left side of the panel. Why wouldn't the electric boost pump be used to prime the engine, like on the 185?

Just wondering, thanks. BTW it sounds like a neat project.
 
When we started looking over the basic 200 Husky, we realized that it didn't have a primer. Since we have gone to some trouble to re-index the MT props on the 180 model so as to be able to hand prop it easier in the event of a dead battery, we decided a 200 horse Husky used in the bush environment needs a primer for the same reason.
 
I have a Cessna with an IO-360 and it has a boost pump and hand primer. When it is cold I use the hand primer along with the boost pump.

And I hand propped it once too at a back country strip when the battery was dead. Without the hand primer that wouldn't have been possible.
 
Thanks for the post George. Much like your 185 project, please keep us posted.

As a side note I took my first ride in a Husky just a few days ago. An old wing A1B. I was impressed. It was a nice aircraft.

Shane
 
George, that is a great reason. The consequences of a dead battery didn't cross my mind. Its probably a good thing I don't get the opportunity to venture too far from civilization.
 
George,

You certainly get the most interesting of projects!

I look forward to hearing more about this.

sj
 
How about a 2" electric stby AI and a 3" altimeter. Altimeters don't weigh much at all and there's about a pound of weight savings between the 2 and 3" AIs.
 
1) I prefer the three inch attitude indicator because: the Mid-Continent three inch has a MTBF of 7,500 hours versus 2,500 for the two inch; if we were to be in the clouds the three inch attitude indicator would be easier to use; and most importantly, we have an extra one.

Here is the latest panel revision. We had a problem with the depth of the SL40, and had to move it down. A benefit is it frees up space in the panel, and allows a slightly better cluster of the flight instruments.

InstrumentPanelradiosunder.jpg


2) We talked to Lycoming about the primer. Initially they were perplexed why we were interested in hand propping wit a dead battery, but they finally got the picture of floating on a lake far from help. They suggested that with high wing tanks, if we were to go mixture rich, and crack the throttle, after three minutes we would have a primed engine without a manual primer. We tried this, and as we expected, it didn't work, so we are proceeding with a primer.

3) This is a very labor intensive project, and we will have weeks of labor into fitting all the carbon panels inside and out and doing all the things we are doing to reduce weight. Folks at the factory are very supportive of the effort, and the hope is that a number of the weight savings mods, as well as the 696 panel will find their way into standard production Huskies.
 
George,

Will this airplane be certified or experimental? I hope that many of these changes make their way into production. These changes are a huge improvement over the current airplane. I personally like this direction for the Husky much more than the glass cockpit focus.
 
It will be certified.

I think Aviat deserves credit for putting the G600 into factory planes. While it is more expensive, weight is supposed to be close to steam gauges. The installation is very attractive, and G600 seems the best glass going for light planes. Here is a link to pictures of the G600 installation:

http://www.aso.com/aircraft/121069/

We prefer the 696 over the G600 for our use because the 696 takes topo data (where the G600 does not) which is essential for our bush use, and it should be lighter.
 
You know, five or six years ago I would have laughed and guffawed at that panel in a plane such as a Husky or Cub, but after flying many hours in the cub and 180 with the 496 - and having flown the Cirrus & Diamond with the G1000, the added situational awareness is really great. Sure, if you are always just putting around 20 - 50 miles from home on VFR days in areas that you are familiar with, its really overkill, but when you take that long trip from KC to Idaho, or where ever, dodging t-storms and occasionally experiencing less than VFR conditions :crazyeyes: , it's a great tool to have in your kit.

One of the cool things on the G1000 is the "range line". It shows a circle of how far you can get on the map with the fuel you have (it had very accurate fuel flow and fuel level systems in the Diamond). You could pull the mixture out and visually see how much further you could go by leaning.. Handy feature!

sj
 
How do these glass cockpit instruments work in the cold? For example, if you leave the plane parked out doors for few nights at 25 below and do a quick preheat on the engine with out warming up the cockpit do the displays still work?
 
I've fired up the 396 at -30, and while the display is sort of slow at first, the unit warms itself up pretty fast.

Mine lives indoors, but in unheated hangar, and it's been -40 or colder here, and no damage.

I don't think I'd worry about cold. These units do generate quite a bit of heat when running.

MTV
 
When we were speaking with Bell's test pilots doing the cold weather tests on their new 429 helicopter, they explained to me that the Garmin 530 has a built in heater and is great at very cold temperatures. The Garmin 430 does not have an internal heater, perhaps because Garmin didn't anticipate this requirement when they developed the 430. In any event, the Garmin 600 is certified to -55C for "storage" and -20 for operation. I couldn't find mention of a heater, but with -55C, I bet they have a heater built in. I would bet, just as the AHRS is a lot more durable than an attitude indicator, the G600 will probably do better than steam gauges in extreme cold.
 
It will be interesting to see how the Garmins do in the cold. My handheld is worthless at -20F (albiet it is an OLD unit). The folks I work for are installing G600 in one plane and taking delivery of one with G1000. Thesewill operate above the arctic circle. We'll see.

Mike
 
I would have a look at the AFM Limitations for the G1000, as there is a limitation reference use north of a certain latitude slightly south of the Arctic Circle. Bet the G600 has the same limitation. I am a little hazy, and don't have the limitations here, but I recall it having to do with a heading input to the AHRS box.
 
Not sure about heaters, but put your hand on the face of any Garmin GPS after its been running a while. They get pretty warm.

The older GPS units, such as the Garmin GPS III Pilot, took a while to warm up, and was best kept inside when the plane was parked outside. The issue there was the LCD display. Some of the very early Garmins actually had displays that were damaged by temps colder than about -20 or 30. I really don't think that's an issue in most places any more.

Frankly, if you have ANY gyro instruments in an airplane (and maybe even if you don't) you are nuts not to pre-heat the cockpit prior to flight, as well as the engine and battery. A Little Buddy heater up under the panel will provide plenty of heat to make your gyros last a lot longer, and I have to believe it'll be a lot easier on those displays as well.

I suspect the displays are the biggest issue in extreme cold.

MTV
 
G.M.

Thanks for the heads up, I sent a query to Garmin. Hope to hear back, will post the response.

I tried to download the G1000 manual; however it refused to be sent to Fairbanks in the winter, can't blame it for that.

Mike
 
WARNING: Because of anomalies in the earth’s magnetic field, operating
the G1000 within the following areas could result in loss of reliable attitude
and heading indications. North of 70° North latitude and south of 70° South
latitude. An area north of 65° North latitude between longitude 75º West
and 120º West. An area south of 55° South latitude between longitude 120º
East and 165º East.

This is what I could find so far....North Slope near Barrow(71 degrees Lat.) would be in the zone.
 
mghallen said:
WARNING: Because of anomalies in the earth’s magnetic field, operating
the G1000 within the following areas could result in loss of reliable attitude
and heading indications. North of 70° North latitude and south of 70° South
latitude. An area north of 65° North latitude between longitude 75º West
and 120º West. An area south of 55° South latitude between longitude 120º
East and 165º East.

This is what I could find so far....North Slope near Barrow(71 degrees Lat.) would be in the zone.


Another big hurdle for the G1000 is your monthly cost for software updates. Make sure you figure that into your costs.
 
George,

Would this not have been an great time for Husky to upgrade the engine to the Certified IO-390?

Any plans for this?
 
Not sure, what would be involved.

We just got our dyno data from Lycon. We started at 201 horsepower, when they received our new engine, and it ended up at 217 horsepower after polishing and porting. They also commented that the exhaust system on the 200 horse Husky is very efficient, with less than a 1 per cent difference compared to just straight exhaust pipes.
 
George, will you be ready for valdez? Sounds like this project will be able to run with the big dogs up there. The little woman and i really enjoy following your projects. I bet husky drivers will benefit from your experimentation. We enjoyed the beegles 185 thread. Best of luck.
 
I don't see how any Husky could ever favorably compete with a Cub that weighs 250 or 300 pounds less in a STOL contest. Our hope is that this new Husky will be an awesome float and ski plane, for the reasons I described in my initial post. I have only flown a 200 horse Husky once, and it felt a little nose heavy -- so I will be pleasantly surprised if it does as well as a 180 horse Husky on wheels.
 
How much weight would you lose by going to 8.50's instead of 31's and not putting the float provisions on?

Will you be able to order an plane like yours Direct from Husky in the future?
 
Back
Top