Showing posts with label 4 stroke engine. Show all posts
Showing posts with label 4 stroke engine. Show all posts

Monday, April 15, 2013

Paradise City photos of all sorts from Sun N Fun

Please note: James' blog has moved to a Wordpress site. To access it, please visit http://jameswiebe.wordpress.com/. All posts have been transferred to the new site, and all new posts will only be accessible via Wordpress. Thank you for your interest!


Below are some fun photos from Sun N Fun.  This proves that the new Paradise City had a lot of stuff happening!

Make sure you also look at the YOUTUBE VIDEOS of flying the pattern at Paradise City.

Click on any photo below; it will open on your computer in high resolution.  Enjoy!

Also, you'll enjoy looking at the many other posts that are on this blog, covering topics ranging from aircraft construction, carbon fiber development, adventure, and more.  CLICK HERE to see the latest post.  


taken from a Belite UltraCub with a 4 stroke.
Paradise City is dead center of this photo.  Lots of activity there!

Taken from a Belite ultralight.
Paradise City runway top dead center.

Sun N Fun, photo taken from the Paradise City pattern.

Ultralight airplane.
A Belite Ultracub in front of a tree.

UltraCub from Belite, 4 stroke engine.

taken from a Belite Ultralight airplane.
Paradise City runway.

taken from a Belite Ultralight Aircraft.
Sun N Fun.

4 stroke engine
A Belite UltraCub!  With a 4 Stroke!

Sunday, December 16, 2012

Ultralight Cross Country?

Please note: James' blog has moved to a Wordpress site. To access it, please visit http://jameswiebe.wordpress.com/. All posts have been transferred to the new site, and all new posts will only be accessible via Wordpress. Thank you for your interest!


Personal note:  Thank you, Larry, for reading my blog. I did take that flight this afternoon, as I suggested I would.

Readers:  Please allow this post to wonder and wander around a bit, just as I did on a cross country flight in the burgundy plane.  Details on that flight are later in this post.

After I got to the airport shop this afternoon, I set to work on our production prototype of our new aluminum cab, which, when combined with a fuel efficient four stroke engine, produces the best ultralight aircraft on the planet.

There. I said it.  A boast:  "The Best Ultralight Aircraft in the United States".

There are seven reasons why this is so:

Engine Selection:  4 stroke aircraft engine with reliable operation and low fuel consumption
Airframe:  Aluminum; easy to build, lightweight
Utility:  Great short field performance; off - airport ruggedness
Flight Characteristics:  When trimmed, flies hands off; turns easily.
Extras:  Our carbon fiber expertise allows more strength, even lighter airframes and more options.
Covering:  Our Oracal process is producing the most beautiful airplanes, with less cost and less time than all other traditional aircraft coverings.
Cross Country:  I'll get to this last.  I had a great time flying away from the airport, then returning as sunset was imminent.

1.  Our engine selection.

We picked a 4 stroke engine built by Hummel Engines, and as their website states, this is "reliable four stroke power", and has been in use for years in various aircraft.  Our engine was ordered with all new parts, including aluminum Nicom cylinders.  We also ordered the largest bore and stroke that Hummel offered, and it has quickly proven to be a perfect choice for Belite.

Although this engine is rated at 45HP, we are using it in a derated manner, by limiting RPM to about 3150 RPM.  This gives us around 38HP at full throttle, which appears to be adequate to produce the maximum cruise speed legally allowed under US ultralight aircraft regulations.

This engine weighs 88 pounds, including carburetor, exhaust pipes, and dual ignition.

Christian Stratton had been working hard on fitting our Burgundy plane with a new firewall.  We'd been challenged to accomodate the sharp looking opposed cylinder engine in the Belite, and to eliminate Center of Gravity (CG) issues, the engine had been placed in a manner such that the magneto was poking into the cabin.  The new firewall fit beautifully; here's a photo of the revised engine installation and firewall.

4 Stroke engine on Belite Ultralight Airplane
And we provide some great two stroke options as well; nothing beats a Hirth F23 for raw stump pulling power.

2.  Our aluminum airframe.

The fit and engineering quality on our aluminum cabin is just amazing.  Weighing in at about 22 1/2 pounds, this cabin sets a new benchmark for ultralight aircraft.  Pictured below is a cabin being prepared for a customer here in the state of Kansas:

Aluminum cabin assembly for Belite ultralight airplane, with Oracal covering

Let's take one peek inside this cabin, and look at the box construction along with the fit of everything.  The in flight storage compartments are on the lower left side:

Aluminum cabin for Belite ultralight airplane

3.  Belite has utility on and off airport.

When equipped with spring gear and appropriate tires, I've had no end of fun landing Belites in the neighboring uphill hayfield.  Great fun!  Caution -- good results require great skill.

Hayfield landing in Belite Ultralight Aircraft
I did a fun post on this topic.  Read the Hayfield Post Here.

4.  Flight Characteristics.

The new UltraCub is flying by stick control only (see the video demonstrating this here.)  Alternatively, on my flight earlier today, I kept my hands off the stick and bumped the plane around using rudder pedals.  Take your pick.

5.  Extras.

I've enjoyed engineering some other options into the Belite.  Our carbon fiber spars are stronger and a great choice for customers who want less weight and more wing strength.  I'm working on some more options for the future; here's an example of a prototype Stabilator rib.

prototype Carbon Fiber rib for stabilator on Belite Ultralight Aircraft.
The pictured rib weighs about 2.1 ounces.

There's lots of other extras, but I won't belabor the point.  Read more about our airplanes on this blog or on our Belite website.

6.  Our covering process.

We're using Oracal, a vinyl covering which looks spectacular and easy to apply.  We've been using it for a couple of years.  Other automotive, aircraft, RV, motorcycle manufacturers use similar products for applying graphics onto pre-painted surfaces.  We take it a step further, and cover the entire airplane with it.

7.  Cross Country?

I wonder what the possibilities are.  Based on initial fuel burn analysis, fuel burn with the 4 stroke engine is running around 1.7 gph at low cruise.  I've got to get that number nailed down, along with 'cruise' speed at various RPM's and fuel flows.  Assuming fuel flow of 1.7gph with a 50mph speed, we've got a range of 145SM miles to dry tanks.  Combined with neutral or tail winds, there is a pretty good opportunity to go a long distance, and beat land transportation in the process.

Earlier today, I took off in the burgundy Belite UltraCub and headed north, into a headwind.  I decided to fly  30 minutes northbound, then turn around and head home.

Here's some photos I took along the way:

Cross country in a Belite Ultalight Airplane

View of small town (Furley, KS) on a cold December day

Watershed ponds shrinking in size, due to drought

Farm house and wheat field

Actually, this pond is doing OK.

Harvey County east lake, photo taken from Belite Ultracub with 4 stroke engine
I turned around and headed home.  It took 30 minutes at low cruise, into the headwind, to get there.  I upped the power and climbed into a nice tailwind heading home, which took 20 minutes.

I'm starting to think, again, of flying to Oshkosh next summer in a Belite Ultracub.  We'll see.

Total Time in the burgundy plane to date:  3.9 hours.

The following day, I took the Belite UltraCub out to the flint hills to take hi-res photos of wild mustang horses.  You can read about that HERE (click).









Sunday, December 9, 2012

Well Coordinated Flight in UltraCub with 4 Stroke

Please note: James' blog has moved to a Wordpress site. To access it, please visit http://jameswiebe.wordpress.com/. All posts have been transferred to the new site, and all new posts will only be accessible via Wordpress. Thank you for your interest!


I'm able to fly the 4 stroke UltraCub with good turn / rudder coordination, without using the rudder pedals.  This fact is shown in the following video on youtube:

CLICK HERE

What this means is the Belite's aircraft continue to be more like flying a Cessna 172.

The UltraCub has enhanced span and enhanced flaperons.

And here's a photo of a cabin from an UltraCub, nearly complete, ready to cover:

UltraCub Cabin under construction

Friday, December 7, 2012

Testing Continues on Belite 4 Stroke Ultralight Aircraft

Please note: James' blog has moved to a Wordpress site. To access it, please visit http://jameswiebe.wordpress.com/. All posts have been transferred to the new site, and all new posts will only be accessible via Wordpress. Thank you for your interest!


Belite UltraCub, Sans turtledeck... with 4 stroke engine
The testing of this new airplane / engine combination has been just been fun.

As this is just Part 103, I'm not required to keep a log, but I wish I would have.  Here's a recap of the experience so far.

#1 -- This flight got the plane long enough to prove that a nose forward CG was a disaster.  Got into ground effect; immediately reduced power; was unable to flare nose up; tested the landing gear.  All good.

#2 -- Reset the elevator  more incidence down.  Improvements over #1.

#3 -- Rebuilt engine mount, changed CG substantially, much improvement.  Several test hops.

#4 -- Reset elevator authority movement with more "up". Landings are now pleasant.

(time in aircraft is now perhaps totalling 24 minutes, 0.3; -- not much)

#5 -- Aircraft is now showing good elevator authority; I choose to fly the plane around the pattern.  No problems.  TT [total time] now 0.5 hours

#6 -- one hour flight.  TT now 1.5

#7 -- one hour flight.  Testing to date includes rudder, flaperon and elevator authority; rudderless turn coordination; turns of 45 degrees+, takeoffs, landings; stall attempts; turns about a point.  Recorded and uploaded to youtube.  TT now 2.5

#8 -- thirty minute flight.  Testing includes:  takeoff and climb to approximate 1000'++ AGL (taking approximately 140 seconds as seen on video); 14 knot headwind on ground without difficulty during taxi, takeoff and landing; many takeoffs and landings demonstrating ground rolls of 40' or less into wind (you can see this on video); calibration of RPM for various flight conditions; continued evaluation of fuel flow.  TT now 3.0 on aircraft. Video uploaded to youtube, and it is available for viewing HERE.  Note how the plane always floats down the runway; I've got too much approach speed.

Suggested RPM for 45HP 1/2VW engine with a 58x22 propeller are:

* full power producing 2900 - 3150 RPM for takeoff  (redline is 3600)
* 2400 - 2700 RPM for cruise
* 1800 - 2050 RPM for final descent




Wednesday, December 5, 2012

Belite Ultralight Aircraft 4 Stroke Update

Please note: James' blog has moved to a Wordpress site. To access it, please visit http://jameswiebe.wordpress.com/. All posts have been transferred to the new site, and all new posts will only be accessible via Wordpress. Thank you for your interest!


1.  INTRODUCTION -- THE VIDEO

I've posted a video on youtube of a test flight of a Belite ultralight aircraft, with a strong running, reliable four stroke engine.  The video is HERE.  Caveat:  It's long, has some boring parts, and is filled with flying on a beautiful Kansas day.

The aircraft in the video is a Belite UltraCub, and it is available in kit form or fully assembled from Belite.  When the tail turtledeck (fairing) is installed, it looks like a classic J3 cub.  (Rummage through our Belite website or Belite UltraCub flickr photo site and you can find lots of photos of it with the turtledeck attached.)

You might want to watch the video if:

a)  you are interested in flying on approximately 1.7 gallons gasoline per hour (91 octane or 100LL) without having to hassle with mixing oil
b)  you'd enjoy purchasing a kit that starts at just $6995 (less engine) (until our current special expires).
c)  you appreciate the value of a beautifully engineered aluminum airframe, comparable in many respects to kits and factory assembled aircraft costing ... a LOT more.
d)  You'd like to fly without FAA registration, without medical, without a pilot's license (but with pilot skills) appeals to you.  This airplane will do it, with a flying weight of 278 pounds (including parachute).  (That's the maximum allowed under FAR Part 103).  (Weights vary by option; this is with heavy spars and ribs; so you can do better)
e)  You'd like to fly with an engine that's been proven in aircraft use for many years, weighs 88 pounds, has dual ignition, and develops 45 HP, and can be built from a kit, or purchased fully assembled, or scratch built from VW parts.
f)  The idea of flying a small aircraft that has well mannered controls appeals to you -- it can be flown without feet on the rudder pedals (and I'll be posting a video showing that sometime very soon).

2.  THE GORGEOUS ALUMINUM CABIN which forms the foundation of our product

Here's are pictures of the aluminum fuselage cabin in our UltraCub, constructed from a variety of aluminum, including aerospace 7075; 2024; and 6061T6:

Quartering rear view of the Belite Ultralight Airplane (UltraCub) cabin

Top Sunroof aluminum skin -- that's 7075T6 aluminum!

View of the inside of the cabin.  Divider panels are for small baggage compartments.

Bottom of the fuselage cabin.  Box beams.  Phenomenal strength.

Kansas sunlight, a cabin, and shadows.
When you order our kits, all of the cabin panel skins and gussets come CNC cut and are 99.95% predrilled.  Everything matches up.  You are responsible for cutting the aluminum tubes and matching them to the skins, then riveting.  Since every single dimensional corner in the cabin has a matching premachined, predrilled gusset, we've made it hard to screw up.  Jigs are irrelevant. 

3.  WHAT DID I DO ON TODAY'S FLIGHT?

Here's what I did on today's test flight:

a)  takeoffs
b)  landings
c)  investigation of aileron / flaperon authority
d)  elevator control
e)  stalls (couldn't really get it to stall)
f)  approach speeds
g)  fuel flow analysis (burned about 1.7 gallons in 1 hour -- will be working on refining this number) (should be good for 3 hours of cruise flight)
h)  steep turns
i)  climbs
j)  power off descent
k) brief formation flight with a RANS SII Coyote -- thanks Mike :-)
l)  waved my hand out the cockpit at the camera

Most of this made it onto the video, but not all.  Please watch for me waving my hand out of the cockpit.

4.  WHAT HAVE I LEARNED ABOUT THE ULTRACUB?

Some very interesting points to consider:

a)  it turns without using the rudder pedals.  (It's not such a 'rudder airplane' as prior Belite aircraft.)
b)  The ground run is short and it climbs like crazy
c)  it sounds cool -- very nice airport wow factor
d)  the engine still isn't developing anywhere near full power.  We've got it turning 3125 RPM with our selected prop, yet max power is available at 3600 RPM, should we choose to re-pitch the prop.  But why?  the airplane is probably flying at Part 103 max speed, as is.  TBD.
e)  it is the most fun I've had flying a Belite.
f)  it has several baggage and map compartments (you can see them in the cabin photos)
g) the riveted aluminum structure is easier to check and repair (welded aluminum requires much more vigilance against cracking in the welds.

5.  WHAT SECRET DESIGN FEATURES DOES IT HAVE?

a)  The Burgundy ultracub is an ultralight airplane, flying under part 103.  Getting weight down was a real problem, because the cabin in the Burgundy plane had a lot of goofs, requiring the use of extra metal to fix.  I was determined to meet weight requirements, so I used a hand toss parachute with a weight of 7.5 pounds (not yet installed, but it showed up and will be installed very soon).  (Max weight with parachute is 278 pounds; if we put it on floats, max weight is 338 pounds).  I also calculated weight with just one quart of oil, although the engine is flying on two quarts.  It has a few other weight saving tricks, which will remain secret for now.  Such as titanium axles, a composite tailspring, thinner polycarbonate windshield, and smaller wheels.

b)  After the flight test sequence is completed, the cabin in the Burgundy plane will be replaced with a new cab, just like the photos above.  This will cut the weight some more, and allow me to reclaim my titanium axles.

c)  I was determined to make weight with brakes and steel springs, because most people want them.  But if you don't, the plane is even lighter.

d)  The engine mount is radically small and light.

e)  The flaperons are full span.  This increased wing area, decreased stall, and probably aided the snappy turn characteristics which this plane has.  This is our first aircraft with full span flaperons.  They have 4 attachment points per wing.  All older Belite flaperons had 3.  

f) The wings are plain old aluminum spars + baltic birch plywood ribs.  Inexpensive.  Switching to carbon fiber spars and aluminum ribs would save even more weight.

g)  The wingspan was enhanced by about 4 inches, by widening the cabin wing attach points.  This increased effective lift as well, and also makes the wings easier to fold.

h)  The earlier version of this plane had winglets.  They've been deleted.

i)  The wing area is now around 112 square feet.

j)  Although we are hand-propping the engine, you could use an electric starter, but it would cost a lot of weight.  You'd have to register experimental, or buy all the weight saving options (carbon fiber spars) in order to legally comply with Part 103 weight requirements.  The engine is easy to start.

6.  WHAT ABOUT THAT ENGINE?

1/2VW on Belite Ultralight Aircraft
Well, it's a 1/2VW with dual ignition, and they've been around for years.  We hadn't tried one because we couldn't get the weight of our plane down enough, but with our new aluminum cabin design, we can finally do it without resorting to exotic materials such as carbon fiber spars.

It comes from Scott Casler at Hummel Engines, and it is a very impressive product.  We bought the top of the line with 45HP and Nicosil cylinders, but a lower HP solution will work fine.

You can also get kits for a very similar engine from Great Plains Aircraft, or you can make one yourself from readily available plans.

Our engine mount is totally custom, and the magneto sticks into the top of the front cabin.  We'll accomodate this with a hole in the firewall.

7.  WHERE TO NOW?

I'll be traveling on business for much of the next two weeks, but I've already taken many photos of the cabin production procedure, and I plan to get that posted.

The airplane is running so well, flying so nicely, that I'm hoping (weather permitting) to take it on a nice cross-country flight sometime in December.

I'm eager to fly it again.  

Ultralight Airplane with 4 Stroke Engine -- Takeoff!



Wednesday, November 28, 2012

Belite Ultralight Aircraft Flying with 4 Stroke VW!

Please note: James' blog has moved to a Wordpress site. To access it, please visit http://jameswiebe.wordpress.com/. All posts have been transferred to the new site, and all new posts will only be accessible via Wordpress. Thank you for your interest!


So, here's the short version:  I successfully flew a Belite UltraCub with a 1/2 VW four stroke engine earlier this afternoon.  Over the last couple of months, I'd done some very low altitude hops, but nothing that really qualified as a flight.

Today, success....

With the growling 45HP VW engine sounding like a real aircraft engine, the plane accelerated crisply and was flying... in about 150 feet.  Maybe less.  I've got the photos to prove it.  They are below.

I'd fought some very significant problems related to the center of gravity.  The heavy engine with a bad engine mount made the plane want to nose over, (which is thrilling), but is also an excellent way to check the robustness of the landing gear and the new cabin design.  We redesigned the engine mount to solve the problem, significantly changing the center of gravity.  A series of low altitude hops earlier today proved that the design modifications had resolved the problem, so there was nothing left to do but to fly this new plane around the pattern.

Gene manned the Nikon, taking great takeoff and flight photos.

BTW, the turtledeck is not installed, but has been finished and will be attached and flown soon.

There is a much bigger story to be told here.  More in the days ahead.

Belite Ultralight Aircraft with 4 stroke VW engine

Belite Ultralight Aircraft with 4 stroke VW engine, tail off ground
Belite Ultralight Aircraft with 4 stroke VW engine, takeoff!
Belite Ultralight Aircraft with 4 stroke VW engine, in flight
Belite Ultralight Aircraft on maiden flight
Redesigned Engine Mount solved CG problem (and lightened the airplane)

Friday, July 20, 2012

Burgundy Metallic UltraCub

Please note: James' blog has moved to a Wordpress site. To access it, please visit http://jameswiebe.wordpress.com/. All posts have been transferred to the new site, and all new posts will only be accessible via Wordpress. Thank you for your interest!


Hey World,

I found a gentleman who was sneaking around our facility earlier today.  He identified himself as "Bob Philips".  After I threatened to call the police, he indicated that he was a private investigator, and was working for an anonymous individual who goes by the initials "C.S.R."

He further told me that he'd been assigned to investigate our rumored developments on a state of the art ultralight aircraft.  I told him that I was, in fact, soon going to share information on such an aircraft with the world, and I could really care less if he was taking spy photos -- if he was leaking information, I was planning to do the same thing, only a few days later.  He gave me a weird look, so I told him to scram, and he left.  Just before he walked out the door, he said:

"I know about the stitches, the thumb, and the scar on your forehead."

I have no idea what he was talking about.

Belite UltraCub (Ultralight Airplane)
Anyway, our upcoming Belite UltraCub (Ultralight Aircraft) has some really cool features:

*folding wings -- our design is improved for better storage and transport
*reduced weight -- allows use of four stroke engine without carbon fiber spars
*increased wing area -- allows for quicker takeoffs and slower landings
*increased flaperon area -- likewise
*winglets -- improves flaperon effectiveness and reduces wing drag
*four stroke engine -- far better fuel economy and great reliability
*rivet construction -- easy construction, no welding involved in kit construction
*low kit and assembled aircraft cost -- we'll have a special OshKosh price, valid until the end of August.
*unbelievably good looking finishing -- using our vinyl color process -- easy and inexpensive.  Our demonstrator ultracub has metallic paint!!
*quick assembly -- as proof, I personally built this demo plane in 'spare time' over the last four months, while doing all my other Belite tasks and working in my computer forensic consulting business... (Some people thing I'm constantly in motion... and I am.)

I'm hoping to fly it briefly tomorrow (Saturday), then truck it to OshKosh to show to the world.  We don't plan to fly it at OshKosh, but we'll have another Belite demonstrator there as well.  Please come by our booth and look at our innovation on display.

The photos are on our Flickr account, here:

http://www.flickr.com/photos/beliteaircraft/

And here a couple of the finer photos which I've decided to post on the blog.

Extended Flaperons and Winglets on an UltraCub (Ultralight Aircraft from Belite)
Four Stroke engine on Belite Ultralight Aircraft


See you at AirVenture!

James (& Kathy)