@@CaptSly Humans make mistakes and it is or would be nice to fly a machine who helps us recover or survive those mistakes. Although it would be astronomically expensive to design, build and market a human proof personal aircraft. I would hope that some of the $435k for the new Cessna 172 has included some of those type of features. Maybe so maybe no. Yes, I see your point. It’s best not to crash.
"Sat in it and made airplane noises" LOL I remember doing that in a 1/2 built LongEZ, and my old man went one step further for the pic, grabbing some welding goggles. It was the first time we had the wings and canard on. They say the only difference between the men and the boys is the price of their toys. I guess that pretty much proves the old saw. :-) Looks like a great airplane, I hope the motor works out and proves reliable. Beautiful installation. Stay safe, enjoy the ride!
Phi cơ ngoài bóng tinh hoa, động cơ khởi động mạnh êm vô cùng, nhẹ nhàng lướt gió lên cao, kỹ năng điêu luyện mô hình bay nhanh, âm thanh nào sánh bằng my, cứ đi một chiến du hành thành công, cảm ơn người bạn phương xa, video chia sẻ thật là rất hay, chúc bạn hạnh phúc đạt danh,kinh doanh đắc khách tiền về chất kho.
Correct, exup gives better throttle response and low end torque. It introduces different exhaust resonances. 2011 and up. Its not a big power gain, its more of a driveability thing. If you call this company they can give you correct exhaust design for your rpm range. They will give tube size, length to merges, which cylinders merge at what distances and into what size.
Oh, the longevity of the engine should not give anyone concern. These Japanese four bangers run high rpms as a matter of course. One of the quickest vehicles ever built is a Suzuki with 160+ hp; and a factory warranty!
My 85 Yamaha XJ700 only has 5 gears & it's sweet cruising spot was made for 55 mph....Now when I'm cruising at 75 on the interstate to keep up with traffic, I'm running at a constant higher RPM.... I can't remember exactly but it's around 7,000 rpm due to no 6th gear & I have 50,000 miles on 1985 Yamaha air cooled engine technology. So i'm pretty sure that modern Yamaha engine can easily get 50,000 miles & over despite cruising at say 8,000 rpms as long as the oil & filter is changed regularly.
Aircraft engines do not turn the propeller at fast RPMS like 8000, most aircraft engines turn the prop between 1,800 and 2,400 RPM, you can use an engine that turns 8,000 if you use a gearbox to reduce the prop RPM to those lower speeds.
I like the sound better with old school low RPM aviation engine. I know the Yamaha make lot of HP not sure if they are cheaper some say that but when you add up all the custom work are they any cheaper?
These engines in snowmobiles are used to the high sustained rpm. I’ve got over 100hrs on mine in my S7 STI. Even if it’s a TBO of 800-1000 hrs it’s a lot cheaper to rebuild an apex over a rotax or other conventional aircraft power plant.
I had a 2008 Yamaha R1 which is a similar engine for a motorcycle, over 20K on it almost all on the track at high rpm. Valves were still in spec at 20K miles. It did have an exup stock, mine had one of the first leo vinci full systems on it. Just with the pipe and a dyno tune I gained 15Hp over stock and it pulled from just off idle to redline. I'd bet a dyno tune could fix most of his issue. And you can easily rebuild it for 5K.
Don’t know about snowmobile engines, but I would imagine their design isn’t much different then sport bike engines, and they are designed as high reving engines and really don’t start making decent power till around 6k rpm. So 8k rpm for cruise speed is nothing for these engines.
I love light planes, especially light sport planes, buuut I have physical and fiscal problems. My physical limitations are high blood pressure and type 2 diabetes. My fiscal problem is a serious case of lackofundus. When my retirement check gets deposited the banker rolls his eyes and snickers.
My ideal plane, stall proof, STOL, Twin electric motors with independent power source capable of single motor take off and climb 500ft./min, plus crash proof cabin. Piston engines should have died with old Henry Ford. Come on guys where are the real experimenters we had self sealing tanks in WWII. I couldn’t find one light aircraft with that simple safety asset in wings. Building copies of others work IMO is not experimental. When doing something on the cheap, that’s what one gets. The Hydrogen fuel Cell is my bag of interest.
Piston engines use an energy source that has many times the energy density of stored battery energy. Until materials science develops room temp superconductors, and high energy density batteries, electric aircraft are practically useless. Limited range, heavy battery packs, battery pack needs replacing at 16-24 months (considering that all batteries that regularly discharge more than 50% of their power degrade faster, depending on outside temps.). Hydrogen fuel cell is also limited by weight on an aircraft, thus it is less efficient than current piston eng tech, not to mention much more expensive. Stall proof? That shows you know nothing about lift, friction/drag, or real world wing limitations. Buy a gyrocopter. Crash proof cabin...never happen. If it could be done, the weight and cost would preclude its use. Plus, you know, physics. Building copies of what works...if it's stupid and it works reliably, it isn't stupid.
I live and base under Phoenix Bravo, surrounded by Chandler, Williams Gateway and Scottsdale Deltas and fly often to visit friends’ hangars at other Deltas just outside Phoenix’ Bravo. In this environment, ADSB is absolutely necessary and I Highly appreciate knowing (almost) everyone else in this airspace shows up on 3 different views of my instrument panel. However I completely understand the perspective of my namesake and anyone else who prefers a little more anonymity in his life. If I lived and operated somewhere rural and didn’t need to deal with ATC, I would likely do the same. Freedom, autonomy and privacy are precious and are steadily diminishing. Hold onto what bits of them we can.
why not use a electric motor instead all that prehistoric crap? the electric motors are powerful, lighter, and practical than a pleistocenic motor, more speed, easy maitenance etc, there are some guys in England that are building small electric motor airplanes and are amazing, and cheaper than the airplanes showed in this video, take a look at their videos, are quiet impresives
Lol, such a ridiculous statement. They're flying several hundred miles in a day in a light electric motor driven aircraft that's under 1320lbs total weight? That tech isn't anywhere near being available for any electric powered aircraft. The batteries are prohibitively heavy, expensive, and don't hold the same amount of energy as the "pleistocene" era fuels do. It's a pipe dream at the moment with current battery technology to have electric airplanes of any useful type.
Sorry, I just can’t accept having to run an ICE at 8000rpm and gear the prop down to 2400 for the sake of not paying Lycoming or Continental for a real airplane engine. Not to mention you said you have another one of these engines for a swap out - presumably because You honestly don’t trust these engines. Metal is metal. Any geared engine running at 8000 rpm must wear out faster than one running at 2400rpm. If you have to buy two, why not just buy one trustworthy and proven standard GA engine? Plus this sounds like a snowmobile not an airplane. How much is one’s life worth?
Lets see, air cooled old tech tractor motor vs water cooled modern motor. Cost of a new lycoming 360, over 50K, cost of an apex motor, maybe 5K. Can be rebuilt and dyno tuned for optimum use for about 5-6K. I've seen similar motors with 50K miles on them. Having owned a 2008 R1 motorcycle which is essentially the same engine design with a gearbox, 8K doesn't feel like you're stressing the engine, 6K is loafing along. At 20K miles on my bike with 90% track miles the valves were in spec and didn't need adjustment.
The motorcycle motor this is based from handles 14,500 rpm no problems. The Apex sled engine redlines at 10,200 simply due to centrifugal clutch belt drive transmissions and how power gets put down. 8,000rpm to this motor is nothing. And no, "metal isn't metal". Yes, these are more complex then that old Lycoming, but this is the 2020s, 80+ years since that old tech was put in airplanes. I'll be putting one of these in to a smaller aircraft, so yes, fitting it all in a cowling will be a challenge, but it will absolutely be worth a 160+ mph cruise at half the fuel burn.
You assume too much. I fly with this engine, therefore I obviously trust it. This engine is designed for way higher rpm and power output then I am utilizing and due to its short stroke, piston speeds are no higher then a legacy aircraft engine. My expectation is that this is an 800 hour TBO engine in my application. if it is over 500 hours it’s a winner. I have a two engine rotation because I do not know this to be fact yet and want minimal down time. 200 hrs a year is my goal and appears to be reachable, at $3-4k for a first class overhaul, it would be stupid not to have a spare. I see you must fly an Extra300, I cram myself into my buddies front seat every chance I get and try not to get sick, good times at double my airspeed.
Dennis seems like a cool guy. Great paint scheme on that plane!
I appreciate the kind words.
Love how simple and straightforward the controls look. Nice job. Looks fun!
I like flying birds that fly slow because they also crash slow. Crashing slow is important.
This is the way
It’s easier to just not crash….
@@CaptSly Humans make mistakes and it is or would be nice to fly a machine who helps us recover or survive those mistakes. Although it would be astronomically expensive to design, build and market a human proof personal aircraft. I would hope that some of the $435k for the new Cessna 172 has included some of those type of features. Maybe so maybe no. Yes, I see your point. It’s best not to crash.
I don’t always crash but when I do crash I always crash slow
Still fast enough to ensure you are first to the crash site!
If I was building an experimental, the first choice, for an engine, would be the Yamaha. I'll bet they are hard to find now !
The engine sounds so quiet and smooth. Impressive
Dis guy speaks a Western PA brogue. I'm from updere, so I recognize it. Nice plane!
What’s white and sits in the corner?
A naughty fridge!
Dennis, what a fine aircraft you got there ...
Thanks so much Ralph!
Thanks
Nice set up Dennis and thank you for sharing it with us
Thats my boy Big D Rowe!!!!
U da Man!
Had a 2007 Apex mt , it was a blast. First time I took it out riding I found out what arm stretch was . It took about 2 weeks to heal from that.
I have a 2003 RX-1, still an arm stretcher!
"Sat in it and made airplane noises" LOL
I remember doing that in a 1/2 built LongEZ, and my old man went one step further for the pic, grabbing some welding goggles. It was the first time we had the wings and canard on. They say the only difference between the men and the boys is the price of their toys. I guess that pretty much proves the old saw. :-) Looks like a great airplane, I hope the motor works out and proves reliable. Beautiful installation. Stay safe, enjoy the ride!
Phi cơ ngoài bóng tinh hoa, động cơ khởi động mạnh êm vô cùng, nhẹ nhàng lướt gió lên cao, kỹ năng điêu luyện mô hình bay nhanh, âm thanh nào sánh bằng my, cứ đi một chiến du hành thành công, cảm ơn người bạn phương xa, video chia sẻ thật là rất hay, chúc bạn hạnh phúc đạt danh,kinh doanh đắc khách tiền về chất kho.
Love 125s, had both Mx and GP125s. Love the plane, fun times at 5gph.
The yamaha 1000 engines have been on my builf list forever. I have a kit for a kr2s and I have an 06 yamaha r1 engine ... someday they will be one
That thing sounds so sweet!
Just came across this video of your Highlander !!! Super job Dennis. Hope to check it out in person some day. RJ
I appreciate 🙏 the work you do for us brother
I thoroughly enjoy your channel. Good job!
If you do make a new set of legs make them airfoil shaped. It will add to the stability and may give a little speed increase!
Great episode! Great job Dennis. From your Kolb friend Mark in northeast PA.
Thanks Mark!
Nice plane even Peter frampton would agree
Nice looking build building one myself
Correct, exup gives better throttle response and low end torque. It introduces different exhaust resonances. 2011 and up. Its not a big power gain, its more of a driveability thing.
If you call this company they can give you correct exhaust design for your rpm range. They will give tube size, length to merges, which cylinders merge at what distances and into what size.
Evidently the link was removed, contact s p d exhaust
Could you use a Harley v twin air cooled? If it was in a super light wieght airplane?
I really enjoyed this video. Thanks
Nice Sir 👍
This is my dream setup
What a awesome aircraft
A bit of heat shield (maybe fiberglass exhaust wrap) right between the exhaust j bend around your radiator side could be beneficial for you.
Iv'e got a 2011 Yamaha Apex with the newer style engine if interested. I believe this engine is putting out 180hp on my sled.
Outstanding
Excellent interview!
I am interested in the Subaru boxer conversions. A friend of my dad's runs a BMW R1100 on his quad city challenger 2. That plane purrs
Super cool bird.. I will have one sum day.
Very enjoyable and informative would be a very reliable engine and parts easy obtainable (in winter)
Oh, the longevity of the engine should not give anyone concern. These Japanese four bangers run high rpms as a matter of course. One of the quickest vehicles ever built is a Suzuki with 160+ hp; and a factory warranty!
Enjoyed
100 miles an hour sounds good to someone who’s spent a lot more time in a balloon than a plane. But every landing is a crash landing in a balloon.
My 85 Yamaha XJ700 only has 5 gears & it's sweet cruising spot was made for 55 mph....Now when I'm cruising at 75 on the interstate to keep up with traffic, I'm running at a constant higher RPM.... I can't remember exactly but it's around 7,000 rpm due to no 6th gear & I have 50,000 miles on 1985 Yamaha air cooled engine technology. So i'm pretty sure that modern Yamaha engine can easily get 50,000 miles & over despite cruising at say 8,000 rpms as long as the oil & filter is changed regularly.
Aircraft engines do not turn the propeller at fast RPMS like 8000, most aircraft engines turn the prop between 1,800 and 2,400 RPM, you can use an engine that turns 8,000 if you use a gearbox to reduce the prop RPM to those lower speeds.
Sounds just like my R6
What plane is this ? Wonderfull !!!!
Just Aircraft Highlander
I like the sound better with old school low RPM aviation engine. I know the Yamaha make lot of HP not sure if they are cheaper some say that but when you add up all the custom work are they any cheaper?
Absolutely, it’s not even close on price.
Looks beautiful
What is the fuel per hour consumption?
In cruise... I think it was around 4-5gph.
What is the range in miles?
Excellent!
beast!!! very nice!!
That is a beautiful aircraft, although, I would only want 800 tires on mine.
Love The airplane u wa t to sale it ? Thanks Chuck Brown
Please post links to motor mounts, and wire harness guy
WOW YAMAHA IS IT APEX
Are you going to the midwest LSA expo?
Won't make it this year. Too much preparation for other travel this month and next. Can't catch all of them. :-)
Ha! Chasin' da bubble!
Holy mackerel, 70 mile an hour winds? Where I live 20 mile an hour winds are an event. What part of the country are you from?
We were in Wisconsin, south of Oshkosh. The Saturday night storms were much worse in Oshkosh. We were lucky in Broadhead
Super curious about reliability and longevity of an engine being continuously operated at such a high RPM. 🤔
If I recall correctly you have to keep ahead of the clutch or sprag type bearing in the GRU.
These engines in snowmobiles are used to the high sustained rpm. I’ve got over 100hrs on mine in my S7 STI. Even if it’s a TBO of 800-1000 hrs it’s a lot cheaper to rebuild an apex over a rotax or other conventional aircraft power plant.
I had a 2008 Yamaha R1 which is a similar engine for a motorcycle, over 20K on it almost all on the track at high rpm. Valves were still in spec at 20K miles. It did have an exup stock, mine had one of the first leo vinci full systems on it. Just with the pipe and a dyno tune I gained 15Hp over stock and it pulled from just off idle to redline. I'd bet a dyno tune could fix most of his issue. And you can easily rebuild it for 5K.
at only 8000 itll last longer than the plane
Don’t know about snowmobile engines, but I would imagine their design isn’t much different then sport bike engines, and they are designed as high reving engines and really don’t start making decent power till around 6k rpm. So 8k rpm for cruise speed is nothing for these engines.
Fuel consumption is awesome
lovely aircraft. how do we reach you. Check Tks.
The wheels and shocks probably cost a lot more mph than the struts.
Low & Slow. My kind of bird.
I love light planes, especially light sport planes, buuut I have physical and fiscal problems. My physical limitations are high blood pressure and type 2 diabetes. My fiscal problem is a serious case of lackofundus. When my retirement check gets deposited the banker rolls his eyes and snickers.
Very cool, er, I mean hot, um, I mean, aw, y'know....
if you rarely spin it to only 8000 itll last FOREVER!!!!! lol
My ideal plane, stall proof, STOL, Twin electric motors with independent power source capable of single motor take off and climb 500ft./min, plus crash proof cabin. Piston engines should have died with old Henry Ford. Come on guys where are the real experimenters we had self sealing tanks in WWII. I couldn’t find one light aircraft with that simple safety asset in wings. Building copies of others work IMO is not experimental. When doing something on the cheap, that’s what one gets. The Hydrogen fuel Cell is my bag of interest.
You sound like a smart individual with many answers. I can't wait to see what you build!
Better design the battery Tech first my man, unless you only want to fly for 10 min at a time!!
Piston engines use an energy source that has many times the energy density of stored battery energy. Until materials science develops room temp superconductors, and high energy density batteries, electric aircraft are practically useless. Limited range, heavy battery packs, battery pack needs replacing at 16-24 months (considering that all batteries that regularly discharge more than 50% of their power degrade faster, depending on outside temps.).
Hydrogen fuel cell is also limited by weight on an aircraft, thus it is less efficient than current piston eng tech, not to mention much more expensive.
Stall proof? That shows you know nothing about lift, friction/drag, or real world wing limitations. Buy a gyrocopter.
Crash proof cabin...never happen. If it could be done, the weight and cost would preclude its use. Plus, you know, physics.
Building copies of what works...if it's stupid and it works reliably, it isn't stupid.
Stol
I liked it until the "No transponder" comment. Really don't need more of those in the air.
Murica!😘
Oh I too will not add ADS-B out to my build. I will stay out of Class B, C airspace and it’s too cold above 10k.
@@HeeHawHighlander Freedumb!
I live and base under Phoenix Bravo, surrounded by Chandler, Williams Gateway and Scottsdale Deltas and fly often to visit friends’ hangars at other Deltas just outside Phoenix’ Bravo. In this environment, ADSB is absolutely necessary and I Highly appreciate knowing (almost) everyone else in this airspace shows up on 3 different views of my instrument panel.
However I completely understand the perspective of my namesake and anyone else who prefers a little more anonymity in his life. If I lived and operated somewhere rural and didn’t need to deal with ATC, I would likely do the same. Freedom, autonomy and privacy are precious and are steadily diminishing. Hold onto what bits of them we can.
Indeed.... 🙄
20min video and no fly. Alright dude.
Those yamahas arent good for hundreds of hours, more like thousands of hours…
Lol yes them babies can handel all the abuse in my sleds lol
why not use a electric motor instead all that prehistoric crap? the electric motors are powerful, lighter, and practical than a pleistocenic motor, more speed, easy maitenance etc, there are some guys in England that are building small electric motor airplanes and are amazing, and cheaper than the airplanes showed in this video, take a look at their videos, are quiet impresives
Lol, such a ridiculous statement. They're flying several hundred miles in a day in a light electric motor driven aircraft that's under 1320lbs total weight? That tech isn't anywhere near being available for any electric powered aircraft. The batteries are prohibitively heavy, expensive, and don't hold the same amount of energy as the "pleistocene" era fuels do. It's a pipe dream at the moment with current battery technology to have electric airplanes of any useful type.
Sorry, I just can’t accept having to run an ICE at 8000rpm and gear the prop down to 2400 for the sake of not paying Lycoming or Continental for a real airplane engine. Not to mention you said you have another one of these engines for a swap out - presumably because
You honestly don’t trust these engines. Metal is metal. Any geared engine running at 8000 rpm must wear out faster than one running at 2400rpm. If you have to buy two, why not just buy one trustworthy and proven standard GA engine? Plus this sounds like a snowmobile not an airplane. How much is one’s life worth?
Lets see, air cooled old tech tractor motor vs water cooled modern motor. Cost of a new lycoming 360, over 50K, cost of an apex motor, maybe 5K. Can be rebuilt and dyno tuned for optimum use for about 5-6K. I've seen similar motors with 50K miles on them. Having owned a 2008 R1 motorcycle which is essentially the same engine design with a gearbox, 8K doesn't feel like you're stressing the engine, 6K is loafing along. At 20K miles on my bike with 90% track miles the valves were in spec and didn't need adjustment.
The motorcycle motor this is based from handles 14,500 rpm no problems.
The Apex sled engine redlines at 10,200 simply due to centrifugal clutch belt drive transmissions and how power gets put down.
8,000rpm to this motor is nothing.
And no, "metal isn't metal".
Yes, these are more complex then that old Lycoming, but this is the 2020s, 80+ years since that old tech was put in airplanes.
I'll be putting one of these in to a smaller aircraft, so yes, fitting it all in a cowling will be a challenge, but it will absolutely be worth a 160+ mph cruise at half the fuel burn.
@@whitetrashgarage8110 Oh this sounds good. What are you building if you don’t mind me asking?
You assume too much.
I fly with this engine, therefore I obviously trust it.
This engine is designed for way higher rpm and power output then I am utilizing and due to its short stroke, piston speeds are no higher then a legacy aircraft engine.
My expectation is that this is an 800 hour TBO engine in my application. if it is over 500 hours it’s a winner. I have a two engine rotation because I do not know this to be fact yet and want minimal down time.
200 hrs a year is my goal and appears to be reachable, at $3-4k for a first class overhaul, it would be stupid not to have a spare.
I see you must fly an Extra300, I cram myself into my buddies front seat every chance I get and try not to get sick, good times at double my airspeed.
@@jeffreywichern2013 a Sonerai 2L. I might be the first person to do that combo