Bowen Aero LLC, Project Kitfox, Beringer Aero USA, Kitfox SS7, Backcountry, tailwheel, bushwheels, big tire pilot, off airport, flying aviation LSA, light sport, experimental airplane, Katmai, PC6, PC7, Skywagon, C180, Plane crash, whirl wind propeller, airframes alaska, T3 tail spring, STOL speed VG’s, Vortex generators, #supercub #stol #bushwheels #flying #backcountrysupercu#onyour#offairportsixb #aviationgeek #aviation #bushflying #instagramaviation #airframesalaska
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What happened to Bowen Aero videos?
SALUDOS DESDE COLOMBIA QUE BUEN TRABAJO
Would love to see diagram of coolant flow/how you bypassed heat exchangers on snowmobile. I'm building out an RX1, not for aviation, but in a snowcat.
Good on you ,swapped your dirt bike for an off-road truck
I know nothing about putting this power plant into these aircraft. What is the need for more power at cruise? Is it really just not enough power or you don’t like the RPM? With proper maintenance those particulate doesn’t have any known longevity issues with a fairly high RPM. They are quite literally designed for it. The load is very low on them during a cruise situation. It is a DOHC 5 valve engine. Is there much use of the 3 cyl 4 valve engines in the Kit Fox? Power N/A is similar at about a 20% lower RPM. Camshaft profile maybe something to try. What max RPM do you operate the engine at? Because if you can live with less max RPM power changing the profile may help a little. You probably already know that on sleds we run the 4 cylinder up around 10,500 RPM vice 8500 RPM with the 3 cyl. But the 3 cyl is a bit less responsive and not quite as smooth. But the 3 cyl is lighter and newer ones are a bit more boost friendly as you mentioned. Just thoughts. These videos are a bit old and you are probably past this. Thanks again.
Me personally, I treat snowmobile repairs of all kind as if they were A/C engine. My reasoning is that I don’t need to be out in the middle of the UP after dark when it’s -15 or worse with a failure. An engine failure especially because it’s light and maybe a little heat. It’s not a dead stick situation but still a potentially dangerous situation. Btw, I used to build, tune and race my own built turbo and supercharged cars. I retired from that and got into sleds. 2 Rages, 1 Rx1, an Apex and a few two-smokes. I guy decent units and completely restore them. I also have a little aviation experience as a flight engineer in the Marines. Thanks for the videos.
Old hot rod lesson. Don’t let bad engines sit.
Hey man, I'm so curious on how you built the fixture itself? Could you provide any insight?
Engine looks like Yamaha VX110 modified.
Nice…. A $250 total outside retail part for $500 just because this cat wants to live in the middle of nowhere….. ? Alaska and Hawaii are just plan shipping nightmares in either direction and will be for ever ! Excellent vid though….
What filament material was used for the 3D printed ribs? There are lots of filaments, including some with nylon glass or carbon fiber particles in it which help strength, but if the base filament is PLA or anything that's not ready for serious heat (also unpainted/near-black parts) might want to reconsider using 3DP parts. I'd test the temp of those at the end of a hot sunny day and compare to the filament glass transition point (PLA is 140 F, NylonGlass is 158 F, PETG is 176 F, ABS is 221 F). I'd verify that filament & check what real temps end up being. Improvement and possible minute weight shaving would be to use the 3DP to make rib molds and he can use the same CF vacuum/oven setup as the primary fairing for those small parts then there's no risk of any material heat breakdown. I'm a huge fan of real world usable 3DP parts btw, but I also worked USAF ASM and have burned myself enough times on Hercs to know tarmac temps can get wild.
Subscribe nice piper cub
Great idea! I chose to reverse the butt ribs as you suggest to gain more edge distance for the acrylic holes. I'll be fitting the windshield pretty soon, so we'll see how it all works out. I may also let the acrylic extend beyond the butt rib a bit. Maybe I'm missing something obvious, but I don't see why it cannot/should not simply overlap part of the wing transition rib (STi wing). I chose to close up the butt ribs by putting a 1/16" clear polycarbonate sheet over the outside. There's just enough clearance for the fuel gage to not rub against the window.
Impressive work and excellent paint scheme.. Wow. Very cool
Did you include the flaperon in the measurement when finding the 5% or just the wing cord?
The succes and adoption on the Apex is based on one proprietary PSRU. Suzuki would be my choice , Arctic Cat has used them for years, but no PSRU available for them.
Love that helmet. Who makes it?
Chico cali!
Please continue this type of video, greetings from Brazil!!!
You channel is very inspiring to home builders, and this interview you did is exceptional 👍🇨🇦
Please mention engine weight??
Just found your channel. Thanks do enjoy your know how and honest evaluations of you new things you try to
Very attractive paint scheme! Nice build!
What sucks is how incredibly expensive these aircraft have become...10 years ago i could have easily have slid into one of these but now its about impossible and for what your getting i could just drive to Yakima and grab a Carbon Cub
What glue do you use to stick the fabric to the wing?
What a beautiful job! I really like the paint job and all the attention to detail! Great job and Congratulations!
Thank you for sharing this. Can't wait to watch the slats video!
I am happy for you. Can't wait the day I'll get mine. God bless you
65% Cruise is 8800 RPM? Has this engine flown to pieces yet? These sled engines are designed to put a lot of power out thru a small/light block and be pushed hard. And they do put it out. They also blow up and burn out all the time. As someone who owned sleds and hangs around with guys who sled, you never go out alone, etc because these machines break down constantly. Annoying on a mountain with buddies, terrifying if alone in the air.
Works fine for me.
@@BowenAero Dirtbikes like the KX 250 put out 40 HP from 250cc 6.25cc/hp at 14,000 rpm The motors tend to need top end rebuilds every 50ish hours or fail catastrophically. Rotax 915 135hp tbo 10cc/hp 5800 rpm1200 hours max output 5min only Df140 Outboard 127 hp at 6000 rpm 15.9cc/hp 1500 tbo (constant cold water cooling) Rotax 912S 100hp 5300 rpm 13.5cc/hp tbo 2000 hours (v expensive should expect high end metallurgy and manufacturing tolerances) 0-320 5.2L 32.5 cc/hp max rpm 3000 tbo 2000 hours I plotted a chart of rpm/cc/hp to relate those two vs tbo Your apex puts out what? 150hp at 12000 rpm from 1 liter? 6.66cc/hp and 12000 rpm via a crude regression analysis puts a tbo of around 700 hours. However as the apex cc/hp vs rpm is much more similar to the kx250 than any of the other engines on this list, I'd guess the tbo is closer to 100-200 hours, which is about right for a snowmobile. Of course this is entirely theoretical, and you definitely can do whatever you wish. I'm not even trying to talk you out of it, but go in with your eyes wide open.
love the video but when you said you were not gonna tell where the house was, but then you said the back drop behind the stage..... that "sitting" area outside is a big land mark and took less than a minute to find it.... the proof is the tree lined driveway
Stocker
Great video, beautiful aircraft. Great to hear about the highs and the lows. A real life expression of the journey.
Awesome plane and additionally gorgeous paint scheme!
Congrats to these guys for the success of the long project. Very exciting!
I wonder how all that flapping of the slats will affect longevity at the attachment points?
My first fast taxi in my KR2 ended up having to pull up to avoid running off the side of the run way a half hour later after thoroughly enjoying the sports car like flight characteristics and effortless flying I was faced with my first landing with no real data on stall speed in ground effect. It had a stiff landing gear so I bounced . It flew so much like a sport car as compared to a5 ton truck. No crow hops for me . I think a lot of fast taxies end up being the first flights . If I lived out West I would rather had a Kit Fox .
32 min looks like your flying SVFR. hmmmm
che bruto
Great to here other builders confirm my experience building a massive amount of time on research, takes longer them you expected, cost more than you expected, but a great feeling when finished!
torch it and bend it works great!
What resin system are you using for these parts?
Hey Chris been watching for years. Excellent footage, thanks for getting this on camera. I remember seeing the aftermath driving back to Eureka from Maine. Blown away by the devastation. Also, loving the music! If anyone here knows the artists lemme know.
Who built your Yamaha motor? Did you just pull it out of and throw it in or did a shop get it prior and soup it up?
Go rich Kimble!
Wow, that's amazing. I am Former Boeing and used to glass cockpit. Don't see many home simulators like this.
Great looking plane, what about the black color scheme and sun and heat, is that an issue issue?
It shouldn't be, and we know of several planes locally here that are all black. It gets hot in this part of California (regularly over 105 in the summer), so we're about to find out!
Rational, systematic and precise. Excellent video.
You make carbon fiber work look easy great job
2024 and I’m watching every single episode on you’re KITFOX 7 I’m in the process in building a KITFOX 4 for myself to enjoy thank you for your episodes
Cant find this answer anywhere, What are you guys expecting TBO to be on these yammi's? Whats the TBO on the Gearbox?
Unknown really. That's why we are collaborating as a group and compare oil samples and experiences. We have hopes, but flight time will tell the tale. I am at 250 hours going strong.
new video game or AI?
No its real, FPV drone