It threw a blade first, and that sheared the bolts holding the motor on. The motor separated from the backplate x-mount. The BEC was being used from the starboard motor. The motor pulled the battery connection and RX was lost. Great camera work Walter, as usual!
Tough loss. But at least it will live on in this excellent piece of video. It's nice to see someone who can actually video our planes so well. Oh and... "Build fly crash build", it's a way of life.
As a milti-engine instructor I can tell you that losing a prop on a large aircraft would likely tesult in the same outcome. We call it a Vmc roll. These model aircraft are likely flown at less than Vmc on climbout which will have this happen every time one engine stops producing power/thrust for any reason.. Uncontrollable.
x2. VMC roll-over. No counter-rotating props here. The only chance he had was to cut both throttles. I wonder what scaled Vyse is here. Would make for better ops on take-off ...
Even counter rotating engines would result in an uncontrollable (realisticly) roll. A model, or even a large aircraft will roll so quickly the pilot won't neccessarily have time to throttle down. Check out a youtube video of a Kingair about to land experiencing a VMC roll. It accurs in a fourth if a second.
Yeah, I think any benefit of counter rotating props depends on both props being attached to the airplane! And, when the motor rips off its mounts you have a sudden aft cg shift and violent roll forces all near Vmc. Good Times!
I watched a giant scale P-51 do the same thing (not on takeoff) at the Nall this last spring. Prop broke and the entire engine left the front of the plane. :(
Autch! Looking closely at 1:28, you can see a prop blade leaving 2 o'clock in the picture. Is it due to the motor already come lose and the prop blade hitting the nacelle, or is it actually the root cause that caused a violent vibration and hence the motor to come off?
This is just a visual hypothesis of mine, but I think the right propeller might have lost a blade that created the severe unbalance that caused the whole engine assembly to break free. If you pause at 1:32, you can clearly see the prop is missing two blades, which in my opinion, could only have been caused if a prop did break off on takeoff. does anyone else think the same?
I'll take a stab at it.1> The RPM's at take off were higher than what the 3-bladed prop was rated for, thus breaking one of them off causing an unbalanced, then high vibration, breaking the motor mount, and motor off the right boom. 2> The prop was overloaded from the planes weight, causing it to bend/flex beyond its rating at takeoff, and breaking one of them off, and the rest is history.
this is the curse of double engine aircraft. I made the same experience years ago. Today I start building a P-38 powered by two 4stroke engines. No risk no fun!!
Wasn't just the prop and spinner that came off but the whole motor assembly came out! Check starting at 1.29 and on. You will see the motor assembly flying through the air landing on the tarmac...
If you watch carefully you will see that the entire right motor flew off. No chance of recovery. The only question I have is whether the motor mount gave up or came loose on it's own or if the prop was out of balance thereby ripping the motor out. It might be a builder error or unseen damage but, at least in this case, not pilot error.
If you look closely at the slo-mo, you can see a prop blade broke (look above the model, you can see it fly up). Following that the now unbalanced engine broke off. Nothing you can do about that, except super examine your props before flight. Really bad luck.
I'm no RC flier, but I like planes, so I decided to watch carefully when the slo-mo came on: Can I analyze what might have caused the crash? Too early a takeoff and a tip stall? Reversed aileron controls? Control surface fai- OH-ohhhh.... Missed that the first time. 8-)
I'm with Dave Grennan, He threw a blade on the right engine. Nothing "anyone" could have done except crash! A Crying shame defined! (there's your title)
Sorry Don...that really stinks! What kind of props are you using? Three blader? I'm just trying to figure out how the prop got thrown. So what's next man. Going to rebuild it or repurchase the kit? I know you did lots of work on this puppy! Sorry for your loss! RIP!
***** i do believe because one of the propeller parts came of and only having one made it spin odd and then the force outwards pulled the whole thing out
OUCH! Shame. Bad timing really as just as the model lost the R/H donk it was already in a right roll (see ailerons) due what looks like correcting for a left roll. It's the right aileron turn that sent the plane into the roll but the driver wasn't quick enough to sort it out due ow altitude. RIP:-(
People, the prop had the motor connected as it left the plane, go frame by frame, the prop, spinner and motor came out as one part. Its pilot would have suffered seeing his model go in like that, I felt his pain 😕
had this happen to me too. on take off i lost a prop, how ever i got lucky. i was still rolling on the ground when it happen and i hit the switch fast anuff to kill the motors, so i did no damage.
bruce chapman I have built a lot of things and have seen how some people slap stuff together with careless haste and this is the inevitable result. Something wrong with calling it like I see it?
bruce chapman I built flew and crashed many balsa/paper, balsa/Monokote planes since I was 10, plus a couple foam one. What the hell is wrong with you that a simple assessment of reason for crash is SO damn offensive? RC planes crash, that's what happens to them if flown a lot. To avoid repeating same mistake one must be honest about how and why a fail happens, right? If you don't get that then I'd say YOU have never done anything.
It threw a blade first, and that sheared the bolts holding the motor on. The motor separated from the backplate x-mount. The BEC was being used from the starboard motor. The motor pulled the battery connection and RX was lost.
Great camera work Walter, as usual!
Tough loss. But at least it will live on in this excellent piece of video.
It's nice to see someone who can actually video our planes so well.
Oh and... "Build fly crash build", it's a way of life.
It is interesting that the scale models have the same stall characteristics as the real thing.
nononononono my entire lifes work is all gone
Sad to see a P-38 go down. Tough to fly when you only have one engine on take-off.
As a milti-engine instructor I can tell you that losing a prop on a large aircraft would likely tesult in the same outcome.
We call it a Vmc roll.
These model aircraft are likely flown at less than Vmc on climbout which will have this happen every time one engine stops producing power/thrust for any reason..
Uncontrollable.
x2. VMC roll-over. No counter-rotating props here. The only chance he had was to cut both throttles. I wonder what scaled Vyse is here. Would make for better ops on take-off ...
That happened near Cable Airport (So Cal) in 2003. Beech Travel Air threw a blade due to an improper rebuild. Similar results.
Even counter rotating engines would result in an uncontrollable (realisticly) roll.
A model, or even a large aircraft will roll so quickly the pilot won't neccessarily have time to throttle down.
Check out a youtube video of a Kingair about to land experiencing a VMC roll.
It accurs in a fourth if a second.
Yeah, I think any benefit of counter rotating props depends on both props being attached to the airplane! And, when the motor rips off its mounts you have a sudden aft cg shift and violent roll forces all near Vmc. Good Times!
I watched a giant scale P-51 do the same thing (not on takeoff) at the Nall this last spring. Prop broke and the entire engine left the front of the plane. :(
Autch! Looking closely at 1:28, you can see a prop blade leaving 2 o'clock in the picture. Is it due to the motor already come lose and the prop blade hitting the nacelle, or is it actually the root cause that caused a violent vibration and hence the motor to come off?
This is just a visual hypothesis of mine, but I think the right propeller might have lost a blade that created the severe unbalance that caused the whole engine assembly to break free. If you pause at 1:32, you can clearly see the prop is missing two blades, which in my opinion, could only have been caused if a prop did break off on takeoff. does anyone else think the same?
I'll take a stab at it.1> The RPM's at take off were higher than what the 3-bladed prop was rated for, thus breaking one of them off causing an unbalanced, then high vibration, breaking the motor mount, and motor off the right boom. 2> The prop was overloaded from the planes weight, causing it to bend/flex beyond its rating at takeoff, and breaking one of them off, and the rest is history.
damn !
this is the curse of double engine aircraft. I made the same experience years ago. Today I start building a P-38 powered by two 4stroke engines. No risk no fun!!
Wasn't just the prop and spinner that came off but the whole motor assembly came out! Check starting at 1.29 and on. You will see the motor assembly flying through the air landing on the tarmac...
If you watch carefully you will see that the entire right motor flew off. No chance of recovery. The only question I have is whether the motor mount gave up or came loose on it's own or if the prop was out of balance thereby ripping the motor out. It might be a builder error or unseen damage but, at least in this case, not pilot error.
That is a pity, the plane crash, but this is a great video.
At 1:27 to 1:28 you can see part of the right prop break off.
RC Lockheed P-38 Lightning Take-off Failure
Better title 10/10 best title
@0:53 you can see the propeller spin off (at 1/4 playback speed)
Or you could wait for the slow-motion at 1:24 if you don't have an attention deficit disorder.
How about "Lightening Strikes P-38 at SCCMAS
Now that I moved out of cali I realize that this place was right near where I lived.
Beautiful plane.
boy...pity!
To me it looked like a CG issue, but at 1:28 you can see one of the props/spinners go off.
If you look closely at the slo-mo, you can see a prop blade broke (look above the model, you can see it fly up). Following that the now unbalanced engine broke off. Nothing you can do about that, except super examine your props before flight. Really bad luck.
My brother died the exact same way......scary.
I'm no RC flier, but I like planes, so I decided to watch carefully when the slo-mo came on: Can I analyze what might have caused the crash? Too early a takeoff and a tip stall? Reversed aileron controls? Control surface fai- OH-ohhhh.... Missed that the first time. 8-)
what happened to the prop did it just fell off?
+Emilio Camacho
The propellar fell off the left engine, causing the torque of the right to make it flip and *"SNAP, CRACKLE, POP!"*
+Emilio Camacho More than just the prop. The whole motor assembly!!!
That starboard motor had a successful maiden.
Extreme dynamic load on the nacelle due to propeller imbalance might be the cause of the catastrophic structural failure.
I feel bad for whoever's plane that was, that would be really sad to crash. Looks like fun to fly.
this time its more then a broken prop lol
Value of a run-up is not only for IC models, but electric too.
You can see a blade come off the prop, followed by the engine come off the wing, followed by inevitable crash. Bummer.
I'm with Dave Grennan, He threw a blade on the right engine. Nothing "anyone" could have done except crash!
A Crying shame defined! (there's your title)
Here's the title for the video: EPIC FUCKING TAKEOFF FAIL!!! Massive epic fail detected!!!
pure anguish
Sorry Don...that really stinks! What kind of props are you using? Three blader? I'm just trying to figure out how the prop got thrown.
So what's next man. Going to rebuild it or repurchase the kit? I know you did lots of work on this puppy! Sorry for your loss! RIP!
the prop might not have been tightened
Wow very realistic. Iv'e see a full size plane do that in real life... the only thing missing is the massive fire ball.
What hit it?
One of the motors came off and the unbalanced thrust caused it to roll over and crash.
***** i do believe because one of the propeller parts came of and only having one made it spin odd and then the force outwards pulled the whole thing out
OUCH! Shame. Bad timing really as just as the model lost the R/H donk it was already in a right roll (see ailerons) due what looks like correcting for a left roll. It's the right aileron turn that sent the plane into the roll but the driver wasn't quick enough to sort it out due ow altitude. RIP:-(
Its most probable a multi engine resonance as the cause for the break ou of the motor mounts
People, the prop had the motor connected as it left the plane, go frame by frame, the prop, spinner and motor came out as one part.
Its pilot would have suffered seeing his model go in like that, I felt his pain 😕
Looks like the right prop just came off.
Hey Bob...did you remember to tighten that prop nut? Ah..I think so, oops! May bee not.
arrachement du moteur droit et ailerons inversés au début du décollage
had this happen to me too. on take off i lost a prop, how ever i got lucky. i was still rolling on the ground when it happen and i hit the switch fast anuff to kill the motors, so i did no damage.
It spit one of the props off right after takeoff, bummer!
Oh, prop nuts!
Looks like the result of shoddy construction.
bruce chapman I have built a lot of things and have seen how some people slap stuff together with careless haste and this is the inevitable result. Something wrong with calling it like I see it?
bruce chapman I built flew and crashed many balsa/paper, balsa/Monokote planes since I was 10, plus a couple foam one. What the hell is wrong with you that a simple assessment of reason for crash is SO damn offensive? RC planes crash, that's what happens to them if flown a lot. To avoid repeating same mistake one must be honest about how and why a fail happens, right? If you don't get that then I'd say YOU have never done anything.
. ouch!
forgot to retain the elec motor properly.
The right Prop is gone...
thought ami planes are always supposed to do that...
wont fly on one motor
Engine failure right....no Chance, because no Time to do anything.
Fw 190 dove in from above
Wow
ouch
The right prop fell off
O no no no no no no no no *get quiter* no no no no no
No no no no no no... lol...
LoL the right prop fell off
eng failure, the hole eng and prop came of
The problem here is..... PLASTIC SPINNER!! Thats what happened!
After the spinner departed so did the entire motor.
I should really stop watching these becuase its all old men crashing really expensive planes and that kind of stuff is depressing lol