Monster CORVETTE LS-3 Engine on a VELOCITY Kitplane!

[@htoddgriffin4787]

So, when you're finished this is basically going to be a Corvette with a really awesome aero package. Cool!

[@acetylcholine3]

For those of you who aren't that aviation savvy, this thing is going to be stupid quick. I hope the gearbox works in this application. I'm in for more!

[@bobsullivan5714]

Yep....The ultimate 'Vette powered wheelie machine!

[@deborahchesser7375]

Ryan Pliley that’s what I was thinking, 500 plus hp on that little composite aircraft wow

[@marksmovies6191]

@@acetylcholine3 I put a 170 Hp Lycoming in a Long-EZ and it goes 222MPH straight and level, can't wait to see what that monster engine will do !

[@BobbyTucker]

@@marksmovies6191 , Is it going to have a pressurized cabin? I'm sure it's going to need one.

[@WinterCharmVT]

First time I’ve seen anyone LS swap a freaking airplane. Shine on you crazy diamond!

[@indigo196799]

Google "ls engine in airplane". He is definitely not the first one!

[@rwlewko]

For another ls3 installation in an aircraft try moosemods.com.

[@Mike383HK]

I've seen a velocity with an aluminum Buick 215 V8. Sounded great. Long time ago. It got real props at Osh Kosh. I think it got best sounding homebuilt.

[@charlesharper7292]

Spitfire aviation, offers this in their Spitfire kitplane. Awesome Supermarine Spitfire replica!

[@hydojenk]

Any update on this project?

[@SitraLLC]

Awesome, and well thought out build, love the idea of 4 cylinder backup with two ECUs'. Can't wait to see you put it to the test.

[@hawkdsl]

It's not a Corvette engine... It's an LS3, the motor that they ALSO put in Corvette.. It's in allot of other GM's. The LS family is the greatest V8 gas motor the world has ever known... Now... and forever. Excellent choice.

[@kennethkustren9381]

GOD BLESSES YOU WITH MEEKNESS !! GM IS PURIST ROCK & ROLL !!

[@JustaPilot1]

The fit and finish and panel gap lines are stunning.

[@adamwhitfield5571]

I wish I knew this Kat. Seems like I could learn alot just being around. Hands down the finest kit job Ive ever seen!

[@williampressey149]

Excellent update. Would really like to see this aircraft to completion and flying. Keep up the great work Len.

[@michaelsanchez8457]

430 hp wow. I like the MT prop so you can slow her down to land. So rad. It's gonna climb like a scalded cat. Talk about pride of ownership.

[@AClark-gs5gl]

Currently developing a stand alone EDFJ and a EDFJ/DIESEL HYBRID. The Rutan Long E-Z or the Cozy/side by side seating/based on the Rutan Verieze/Long E-Z design, as well as a Velocity 4-place, will be used as test bed aircraft. Tested will be a single and twin power-plant configuration (all electric twin and diesel/Jet-A hybrid on the Velocity aircraft). Goal: to fly faster, farther in a more quiet and comfortable manner than any other electric airplane using current battery technology. Thank you for posting this video.

[@bobstovall5449]

I never cease to marvel at the craftsmanship that goes into these aircraft and the pure likability of the craftsmen that produce that work. His choice of the LS3 in the Velocity is, IMHO, the best possible pairing of elements in the home-built category. This should be an awesome aircraft to fly and in which to go from Point A to Point B for all on board.

[@philipcooper8297]

'merica, where LS swapping knows no boundaries.

[@rcornelius863]

If it fits the LS sits.

[@kieranh2005]

I want to see one swapped into an electric toothbrush.

[@mikeanonymous669]

Woke up one morning with LS on his mind. Went to sleep with the LS on the aircraft! SAVAGE!

[@GrantOakes]

BEAUTIFUL build! Oh, love the floral seat cushions too!

[@russellhawkins5113]

Ohhhhhhhh…….. The sound………. Nothing beats V8 rumble.

[@stevemccann3976]

A work of art. Beautiful job. Nice attention to the small details.

[@todd-617]

It's a Vet-locity. Very cool airplane. Kinda like an inline twin

[@sketchyjeep6751]

These guys have a runway in their backyard? Life Goals

[@JosephHHHo]

There are various airport communities around the country like country clubs with an airport instead of a golf course. There are race track versions of the same concept too.

[@roberthouston9272]

I'd call the back yard the front yard and move the entryway. But that's just me.

[@slackhackman9115]

I know a few people like that. It's pretty cool. 👍

[@bill45colt]

dont we all??? well, truth be told, mine is only grass,,,,,and runs east to west along the south fence about 200 ft from the house. I dont have an intersecting one, im less than a quarter mile in that direction and power poles at that end....

[@texastyrannyresponseteam794]

I love LS engines.. i use then in my daily drivers, race cars, toys, even had a LS boat.. at altitude, I want an engine engineered to be reliable in the air at near full throttle for hours on end.. I've seen automotive conversions fail time and time again.. gear reductions, ecu, electronic ignitions, liquid cooling.. all the extra moving parts.. the pros don't outweigh the cons for me, not yet anyway.. i hope it's good and reliable for you Len.. its certainly going to be nice.. i'd love to see the LS turn out to be reliable in the air..

[@v.e.7236]

Pegging my envy meter, big time! Sweet aircraft. Hope he gets his maiden voyage soon.

[@brucesahroian1482]

Hell Yah!!! I got a 57 Chevy just waiting for that power plant!! LOVE THE SOUND!!!!! Hope this works for your airplane!!!

[@jerrydavis9712]

Okay this may put you to sleep..... Hi this is a comment on Len Baxter's beautiful Velocity with all kinds of innovative things such as exhaust augmentation cooling and on and on. Truly one of the finest projects I have seen. And importantly I do not want to bad mouth what looks like a great gear box "for boats" from Ballistic as possibly used on Len's plane.. I have some concerns to share on using this reduction in an aircraft. I am not an engineer but have spent a few years researching and building reduction drives for a 550HP 411 cu in. SBC Pitts Special project. In the course of this I bought a HyVo chain PSRU which was junk from an engineering perspective. Then I built a HyVo drive based on specs from the chain company's engineering support guys (did not use the airplane word, otherwise dial tone only). I also met Jack Kane from EPI who I have used over the years for advice, also Martin Hallman from Aircraft Designs (no longer with us unfortunately) and other knowledgeable resources. Anyway my HyVo unit came out too heavy and I am in the process of building a dual carbon fiber belt drive which is coming along well and NO I have no intention of selling any of this stuff. Here is my reason for writing. There are numerous loads on the gear reduction unit and among them , thrust induced (pulling on the shaft and bearings), G loading at the prop, torsional loads from delivering the power to the prop and a BIG one , gyroscopic loads due to yaw (side load) induced by pitch changes. I do not think that this reduction was designed to carry the high gyroscopic loads (nose up or down transitions) common to aircraft especially when flying at high speed through turbulence, as an example. Or in the Pitts yarding the stick back for an aerobatic maneuver. To be specific, on my project with a 30lb 90 inch 2 blade wood prop, turning 2750 rpm and a pitch change of 2 radians per second (FAA guideline), puts a side load on the shaft and bearings of nearly 4000 lbs. These numbers come from an engineer and not pulled out of you know where. So I would worry a lot about this especially with a prop that by necessity is mounted pretty far out on the shaft from the bearing. You can find all kinds of excellent information on this and many other important gear reduction and engine conversions on Jack's website, I recommend it highly. Jack by the way sells a couple of different drives and he has a LOT of experience designing and fabricating reduction units for aircraft. Here are the numbers I used to model the shaft and bearings in my FEA program for my Pitts: 2000 lbs thrust (we hope, airplane weighs about 1600lbs, should be fun ), in this case 2000 lbs per belt pull - 4000 total, G load on prop 300lbs at 10 g's, Gyroscopic load of 4000 lbs (trying to rip stuff apart). As a result the bearings I am running are spherical rollers and they are fairly large. They are sized to handle the above loads with a life of approx 500 hours per manufacturer specs for loading, rpm, type of lubrication, etc). Another issue is torsional resonance harmonics which can rip stuff apart and is induced by the firing pulses in a piston engine interacting with the mass of the propeller and other assorted conditions. This is way complicated but in a nutshell the engine, gear reduction and prop combination are critical to avoiding hitting a harmonic that causes catastrophic failure. So the design needs to take these harmonics into account. To give an example on a test stand with SBC engine, an unproven but beautiful 3 geared drive and a constant speed propeller, we watched the gear box explode from torsional resonance at a very low power setting while cycling the prop. This drive was not replicated. The Ballastic drive probably solved for this ( for specific engine / propeller combinations) with the elastimar mounts that connect to the flywheel to the gearbox. However the resonance problem could occur if one departed too far away in terms of propeller, gear box and or engine characteristics. I note on the Ballistic website that they request certain information in building up drives and may have this consideration well in hand.. One last observation, it appears that the Ballistic propeller drive shaft may have a grove for a key way to locate the propeller hub. I don't think this is common practice in aircraft any longer due to the tendency for the shaft to fail based on the stress risers that sharp corners create. Okay, just my observations and opinions and again I do not mean to be critical of the Ballistic drive for its intended operations especially when it is run in a configuration that was approved by them. If COVID-19 was not keeping me at home and on edge this would have been far shorter..Best Jerry Davis

[@kylanlarsen6752]

I really appreciate this write up. I’m a big fan of Jack Kane’s website and have read every page of it several times. You mentioned that he sells his gearboxes, I’ve looked several times to try and find where to buy them, do you know if he still is selling them? My basic tentative plan is to do an ls3 build with forged rotating assembly with the stinger gearbox and have the build analyzed for torsional vibration and harmonic frequencies. I haven’t done the math yet on gyroscopic loads for the stinger gearbox which is a very valid point you brought up. I do know that airboaters will often spin 180 or 360 degrees at pretty high turn rates with these gearboxes which gives me a tentative measure of confidence with regards to their ability to handle gyroscopic loads. That being said I would much prefer to go with an epi psru if they’re still available. I’d love to get your opinion on my very tentative plan/automotive conversion engines in general. I am in love with the concept of a water cooled aircraft engine and enjoy researching the heck out of it. I’m not an engineer ever either but sometimes I wish I was. Jack Kane does give a few morsels of hope in his writings along with a heaping dose of well warranted caution so I’d love to hear what he said about your plans. Thank you for taking the time to write this up and good luck with your build!

[@jerrydavis9712]

@@kylanlarsen6752 Hi Kylan, you can reach me directly at [e-mail]. I have done quite a lot of research on this and we should talk. Great hearing from you and someone that appreciates the engineering challenges. Jack Kane sold his designs but the buyer has not put them on the market. Best Jerry

[@kimosabbe50]

Two very likable guys ... really enjoyed this video and am happy it came up in my recommended list 👍

[@danpoen5916]

this plane is going to haul -ass and climb like a homesick angel, what a cool bird.

[@scotth4355]

Climb a homesick angel I love that

[@claytonholton905]

Haha you really have a way with words!

[@johnberry2877]

At least the oil ploom and the GM parts falling out of the sky will make it easy to find his body!

[@shtupidmate]

@@johnberry2877 that's funny.. dodge fan?

[@donaldlucas8688]

You guys are always going to be the coolest people in the room.

[@gumby442]

Wow, just wow....engine sounds awesome

[@105blwalker]

Hey Len, nice build! However, as the builder of the only Velocity XL-RG with custom equal-length headers (N36LV) I think, in your position, I would perhaps sacrifice a bit of exhaust augmentation efficiency. I would cut off the lower part of your augmenters sticking out the engine cowl to match the lower profile of said cowling. This would look much more sleek and would make for much less turbulent air smacking into the forward edges of your prop, thereby increasing its efficiency.

[@leoa4c]

I agree. How much does the standard engine weigh?

[@CrossWindsPat]

I don't think the proper scavenging effect will work if its not a perfect circle at the exit.

[@quadsman11]

While there are more than plenty of knowledgeable LS programmers out there ! Chuck Mallet out of Charlotte, NC , is absolutely one of the best that I can personally attest to Sir ! Especially when it comes to those tricky little hard to identify programming challenges ! If you are interested, I will do what I can to stir up his information for you ! Awesome project Sir ! Excited to see follow-up footage, and finally, that magic moment of crank-up, test run-ups, and final test flights before you live that ultimate dream of pure flight when all of your design concepts come together ! Happy Flying Sir !

[@nickmalone3599]

Wow! What a plane. Thank you for sharing. Keep us posted on the progress.

[@arthurrobey4945]

A thing of great beauty, Len. Well done.

[@pascalchauvet7625]

0.58 I am amazed that this actually enhances performance because WW2 night bombers used a device called "flame damper" to prevent being seen by night fighters, it looked smilar but in fact REDUCED the aircraft's speed

[@kadmow]

It may be "as much" (?) to cool the exhaust so it doesn't damage the composite prop as any "thrust gain".

[@stevemcinnis4794]

That plane is looking real sweet. Lots of really cool features. Number one being the LS3 engine.

[@troylunn496]

Awesome build! Regarding your prop vibration issue, if you’ve ruled out prop balance, your prop vibration problem is likely a harmonics issue related to the firing order of the LS. First, I’d make sure your engine is running as efficiently as possible, and that your valve depth/timing/duration is ideal at all RPMS in which you plan to operate. Low and idle RPM chugging and misfiring is a sign the tune is severely sub-optimal(particularly when regarding engine balance and harmonics) at those RPMs. The variable valve timing and improved ECU on GM’s newer “LT” engine series ought to resolve the issue, but may be out of budget. Harmonics issues also become much less significant or go away entirely with a slush box, but that may or may not be feasible for your particular application either. A change in gearing or gear type (not straight-cut)or a drive belt with a little give, may also reduce or even eliminate the prop vibration issue. Good luck, looking forward to seeing more!

[@DanaThurston]

That is absolutely beautiful. Thank God for smart and adventurous souls!

[@gobysky]

Corvette engine transportation without speeding ticket worries. 😁

[@texastyrannyresponseteam794]

There's actually speed restrictions for aircraft.. In the United States - Mach 1 10,000 feet msl or above - Unrestricted (but not more than Mach 1) Below 10,000 feet msl - 250 kias Class B airspace - Unrestricted at or above 10,000 feet msl, 250 kias below 10,000 feet msl Beneath Class B or in VFR corridor through Class B - 200 kias Procedure turn - 200 kias Class C or D airspace (at or below 2,500 feet agl within 4 nm of the primary airport) - 200 kias (unless a higher speed is specifically approved by ATC) Class E or G airport traffic pattern - 200 kias (recommended)

[@garrygballard8914]

Sweet, I use to hang out at volicity back in the late 80"s. Love the plane.

[@marksmovies6191]

Right there with ya, It was the 90's for me, really wanted to build one of those, built a Long-EZ instead, also a great plane.

[@RCjunkie]

Will there be trouble with the Exhaust pipes and the prop temps

[@russperkins4054]

Fun video, awesome aircraft. I love the community that exists between builders, may have to give it a try someday! Thanks for bringing us into your hangar.

[@northjeep]

had SDS on an old Jeep.....loved it for that dash tuner. Looking good.

[@ryanroberts1104]

That is so cool! Where is the radiator located?

[@augustbrante8117]

this is like the moose! Cant wait to see what turns out!

[@KitplaneEnthusiast]

It's really looking good now. The interior is mostly complete, but he's still waiting for the gearbox. Once he puts the gearbox on, he can put the wings on and it will look like an airplane!

[@jamestraynor9947]

Nice work Len !!!! Sounds great on all 8. The cam has a nice rumble to it as well. Thanks for sharing a fellow VELO builder so we can all to see and enjoy.

[@2thelimitandthensome]

Just bumping these questions back up to the top, it would be great if these topics can be considered by Len to go through in the next video: Technical questions on Len Baxter's LS3 Velocity, would like to know more detail to see how this type of install could be applied to other homebuilt aircraft: 1) Can Len go through the engine mount design, specifically what are the engine mount points on the firewall side of the engine, and why rubber isolation mounts were chosen over hard mounting 2) Can Len go through the cooling system design, what size is the radiator, how was the scoop and ducting to the radiator designed and built, how were the sizes of the radiator and scoop determined, is an electric fan planned or is the prop suction and exhaust exit suction creating enough flow, how well is the cooling system performing on the ground, has there been any long duration runs with the cowling in place and the prop on to test the cooling system 3) Can Len go through the HVAC system, what brand of unit is installed in the cabin and what is used to control the cabin unit, is air conditioning installed and plumbed into the cabin 4) Prop information - how did Len determine the prop sizing and can we get more information about the electric constant speed actuator slip ring and controller, if there is a failure in the electric actuator or the slip ring what happens to the prop pitch for various failure modes and is there any redundant channels on the slip ring or the actuator 5) Weight estimates - is there any additional detail that can be provided on weight breakdown (engine with accessories, engine mount, cabin HVAC & lines, prop & CS actuator), has the plane been weighed all together with wings and how does weight and balance compare to a velocity with a traditional Lycoming or Continental 300HP engine installation. 6) What was learned about the cause of the prop balance issue and how is it being resolved? I know this is a lot of questions, I just find this engine conversion very interesting and want to learn as much as possible about it. I would like to do a build similar to this and it seems Len has some great thoughts here that are very valuable to learn from. Thanks!

[@jackhoff7619]

Those SDS computers are pretty tough. I had on in a Bronco that got filled with mud several times. Hosed it out and kept going. Also, nice Baja designs light in the nose.

[@mountainmarauder2575]

Did I miss the cooling system details on this installation? The only reference I heard was for the cabin heater.

[@kirkjohnson8589]

Now That's a sweet Ride !!😎👍👍👍👍

[@montneymon-ta-knee6810]

Lynn this is an amazing build I love it can't wait to see it in flight

[@michaelz6870]

I don't even know this guy and I'm exciting for him and his project!

[@doncatchpole7370]

What a great project. Sound is off the charts. Congrats

[@2thelimitandthensome]

Technical questions on Len Baxter's LS3 Velocity, would like to know more detail to see how this type of install could be applied to other homebuilt aircraft: 1) Can Len go through the engine mount design, specifically what are the engine mount points on the firewall side of the engine, and why rubber isolation mounts were chosen over hard mounting 2) Can Len go through the cooling system design, what size is the radiator, how was the scoop and ducting to the radiator designed and built, how were the sizes of the radiator and scoop determined, is an electric fan planned or is the prop suction and exhaust exit suction creating enough flow, how well is the cooling system performing on the ground, has there been any long duration runs with the cowling in place and the prop on to test the cooling system 3) Can Len go through the HVAC system, what brand of unit is installed in the cabin and what is used to control the cabin unit, is air conditioning installed and plumbed into the cabin 4) Prop information - how did Len determine the prop sizing and can we get more information about the electric constant speed actuator slip ring and controller, if there is a failure in the electric actuator or the slip ring what happens to the prop pitch for various failure modes and is there any redundant channels on the slip ring or the actuator 5) Weight estimates - is there any additional detail that can be provided on weight breakdown (engine with accessories, engine mount, cabin HVAC & lines, prop & CS actuator), has the plane been weighed all together with wings and how does weight and balance compare to a velocity with a traditional Lycoming or Continental 300HP engine installation. 6) What was learned about the cause of the prop balance issue and how is it being resolved? I know this is a lot of questions, I just find this engine conversion very interesting and want to learn as much as possible about it. I would like to do a build similar to this and it seems Len has some great thoughts here that are very valuable to learn from. Thanks!

[@BartleyNorman]

Does the extra weight change the flight characteristics of the Manufacturer?

[@wrzl1675]

The LS3 cylinder deactivation is called DOD, the computer tells a solenoid to cut oil pressure to the designated lifters. The problem is is hot rod and performance engine builders have found is that over time the lifter will completely collapse which I’m imagining in an aircraft could be a potentially fatal problem.

[@stevenbryk9347]

Len, I love the videos. It makes me wish I never sold mine. I built N787SB with an IO-540 and MT prop. The vet engine is pretty cool. I also noticed we both have a C-182. All the best. Steve

[@rolandocrisostomo2003]

What and awesome plane. And this gentleman is a genius. I wonder if the coolant from the engine can be incorporated into and anti icing system.

[@danhammond9066]

The answer is no.

[@where-theres-a-will2059]

One thing i noticed was that all the wire ties on for the elec pitch control of the prop are all lined up on one side. This will add mass off center. Maybe stagger them.

[@williambrasky3891]

Nah, this way he only has to wash one side of the plane to maintain perfect center.

[@NeoIsrafil]

I wouldnt worry about the weight of wire ties... you can trim that out pretty easily. A few pounds doesnt make a ton of difference, it's nice, but unnecessary.

[@davidrobins4025]

Thanks for sharing this build video. Amazing what can be done in aircraft building today.

[@tralfazz7579]

When are we gonna see this rocket fly?

[@kenstickney8678]

is there ever going to be follow up on this aircraft?

[@KitplaneEnthusiast]

I believe we will have an update this week!

[@brucemiller8109]

Love the RGB, some heavy duty case and gears im sure....

[@gregpardee5595]

Very cool project! Good to see another home built airplane project close to home here in Michigan.

[@Rudofaux]

Isn't there a concern of the prop sweeping the ground during takeoff? I imagine the takeoff angle must be very shallow.

[@disisfunhouse]

what did he do to combat potential oil slosh did he keep it in the fashion of an automobile or did he convert it to dry sump system...

[@CuzznRickH14]

Can't wait to see it fly. Very, very cool.

[@987jasy]

It is a very clean looking aircraft, really nice to look at. Excellent work!

[@jracer77]

That is a very good looking airplane. Those lines are awesome. Great project!

[@parisvalles3179]

What type of motor mount setup or bushing configuration do you have to the engine and plane frame?

[@fkend1]

Do you not think that the hot exhaust could damage the prop blades?

[@birdwing98]

Builder stated MIXED exhaust gas will not exceed 120F. Is that too much for prop? The prop won't spend much time in the "blow torch" zone.

[@sreed8570]

How did he solve the C/G, it look's like it would be back heavy?

[@Michael-lh6qt]

By design . The wings lift . Keeping the motor inside , out of the cold is genius .

[@Blackcloud_Garage]

Love LS based aircraft engines.

[@rwlewko]

While this plane is cool, the aircraft I would build with the ls3 would be a Murphy Moose. Check out moosemods.com!

[@captainobvious9188]

If the engine makes more then the prop can handle, I would have a custom cam ground for the engine to limit output, decrease pumping losses, and increase the thermal efficiency. I suppose that implies reserve throttle for a good cruise altitude though.

[@marksmovies6191]

Do you know how these engines do running at constant speed for extended periods?

[@nssherlock4547]

@@marksmovies6191 They run no probs on airboats for hours at a time.

[@marksmovies6191]

@@nssherlock4547 I think perhaps you replied to the wrong person

[@jimchape]

When is the first flight planned? Also what's the estimated cruise and max speed on that beauty?

[@KitplaneEnthusiast]

First flight was planned for last summer. Gear box issues heals that up. Even without those issues I don’t think he would have flown last summer. He’s still doing a lot of detail work on the panel, wiring, interior, etc. Estimated cruise speed is Mach 1.3

[@Jim-qc6gu]

How do prevent oil starvation when you are not in a flat flying position?

[@hectorherbert6585]

would love to see the system that will keep the wings attached.

[@thekopvp]

Always thought a LS would be solid for a plane. Nice video thanks for sharing!

[@Robert-mn8gc]

Love 2 see the Corvette LS3 in2 the Velocity Pusher Aircraft Do u have any idea re cruising speed & top speed with ur set up

[@Vincent-Vega24]

Its gonna be AWESOME!!!!

[@bradcallaghan8099]

Very cool build! Hope to see it in the air soon.

[@richardgreen7811]

GOD bless You for applying a lifelong avocation to learning and applying that knowledge. May You be blessed with sufficient years to observe Your dreams come true ...

[@timcross2510]

You're building what I have wanted to build for years but health and income made it just a dream

[@pauljanssen2624]

I would like to see how you did the oil system on the Corvette motor that would be interesting and sometimes you fly upside down or going to steep climb or a steep dive the question would be did you add a oil actuator and if so how big that would keep the engine under constant oil pressure and what kind of oil pan did you use and baffles in the pan

[@jerrydavis9712]

Unless he has some kind of inverted system he will just need to keep the G forces positive. On my project I have a swiveling pickup in the dry sump system, an accumulator and 5 stages of sump stages. It was a pain, might work...J

[@Mike-01234]

That's a big prop will it be close to the ground when you rotate?

[@DIYflyer]

Where is this place? Love that houses have an airstrip in their backyard.

[@timbacchus]

When it flies over everyone will look for a Vet.

[@Michael-lh6qt]

Imagine being thee when it lands !!!

[@TechViewOpinions]

Excellent airplane. What are cost differences and performance differences?

[@bigcheeezzz7135]

So if you turn this plane upside down does all the engine oil pool up top and start smoking and make it quit??

[@CustomIronMan]

Very Nice Detailing ~ I wonder about Exhaust -~ Velocity Vibrating ~ the Prop or Upsetting the Balance .. with those Two Constant Exhaust Streams Pushing back @ 300 - 400 Cu. Ft. Min. I also Guess It may Not be an Issue , but also Looking @ Consent Heat Streaming out during Take Off''s ? ( Where Exhaust Gas Temperature would be Highest & Air Velocity Lowest . ) Not Knowing Much about Swamp Boat Drives , but Knowing few Items about ( Velvet Drives for Boats those Adsorb Vibration ) more .. Thank You

[@oisiaa]

Wow. Wonder what kind of climb rate this thing will get? 3,000fpm?

[@KitplaneEnthusiast]

Not sure but I'm sure it will be a rocket!

[@jnbfrancisco]

Wow. This is the airplane that I have been dreaming about for forty years.

[@AuditRecon]

My only question is how will the engine be cooled? Love the swept back wing design. Subbed.

[@williambrasky3891]

Looked like there was an inlet on the belly that fed into the radiator. The new corvette (C8) has one exactly like it, just on on the quarter panel.

[@ssoffshore5111]

Super cool project, PLEASE give us an update! BTW, the gearbox on this thing has me very concerned. Possibly the CG as well, but I don't know what the factory recommended engines weigh.

[@wayneburden6081]

Definitely have the best sounding plane at the airport

[@davidb7328]

Excellent build quality, fit and finish. Love everything about it so far except the panel, but that comes down to personal preference and $$$.

[@Robert-mn8gc]

Love ❤️ the Velocity Pusher . How does the LS3 stack up against other Aircraft Engines 4 performance & top end & cruise speed please . Robert Australia 🇦🇺

[@kenbarlow4766]

Oh my, that sound takes me to a happy place.

[@1shARyn3]

How did you rig up the throttles to move together?

[@KitplaneEnthusiast]

I believe he has a tube running from right to left behind the panel. Both throttles connect to that tube, and then there's another arm that going to the engine. I'll see if I can include some of these details in the next update...

[@1shARyn3]

@@KitplaneEnthusiast Thanks ;-)

[@merylpelosi8485]

The vibration problem might be caused by the use of 2 ECM's. If they're not perfectly synced, it will induce a harmonic frequency in the crankshaft, leading to a failure.

[@KitplaneEnthusiast]

he had a bad bearing in the gearbox.

[@fabslyrics]

Velicity are Amazing , but with a LS3 V8 it is just even more amazing , do you have a special double ignition on it ? i m curious to know more about the engine running on 4 cyl only, special ECU for sure?

[@workman88]

With the exhaust facing forward, what will the insane amount of pressure going into the exhaust and prop do to the motor with it facing forward? I figured it would create a crazy amount of back pressure and stall the motor.

[@KitplaneEnthusiast]

There is no pressure going into the exhaust. Remember the prop is “blowing” backwards. The exhaust is also facing backwards. Check out a couple of my other videos on this Velocity and can see how the engine and exhaust are set up.

[@huangbinapple]

Are the upper two holes in the back supposed to be exhaust pipe too?

[@maytronix7201]

Wonder how loud that rocket will be at cruise and at full poke?

[@TheMattholew]

Super nice. Well done.