BV - 107 Start-up

[LTF85199]

why didn't you record the takeoff?

[MrDegansta]

why he is going up and down

[dbrqhdakdhkd]

이거 엔진이 디젤인가?

[v22crewchief]

Or it could be that when we started engines on phrogs we used the rotor brake and it was on until both motors were started so the plane wouldn't do that.

Its normal for these planes to do that it has nothing to do with how light it is. Now do these turds have a rotor brake?

[jarrod989]

is this in bc? these thing fly all over the place over here

[HelloHansSolo]

This vid sucks motherfucking fat donkey dick.

[44971719785648751978]

Year unbalanced air craft you have there.

[peepeevagi]

Gotta wonder where it's going. Taking tourists sightseeing? Aerial lumberjacking? Recon? Piracy? It can do a whole lot of things xD

[EMT308]

So why is it bobbing up and down? I grew up practically on the Navy flight line and never once saw a 46 do that that I can recall. :-S

[44971719785648751978]

@EMT308

I only dose that if it's unbalanced.

[MrVeichtel95]

Hello is why the heli at the front always up and down?

[marine6172]

Looks like they hit some ground resonance during the start up...as a former phrog mech and crewchief, I couldn't help it but notice the crewchief standing within the rotor diameter during the start up, a big no-no! If one of the blade flap retainers fails...goodbye head. Cool vid though! SF

[aircraftchecker1]

Weak gear dampers,its shaking up itself...thats not so good.

[BCAD01]

Is that a little ground resonance on the front rotor on start up?

[geoago]

Civil Phrog

[walkerpl2006]

Damn. Someone needs to service the nose strut bad and dude needs to stand OUTSIDE of the rotor arc...

[bushman14]

@walkerpl2006 You don't know shit, dude. That's how it's done, and the nose strut is just fine.

[marine6172]

@bushman14 No, that's not how it's done...well, maybe in the civi world...dude. USMC phrogs are finely tuned machines. Ground resonance could mean the rotor head and/or blade are out of balance...even a worn out pitch link bearing could cause it. I've heard all the maintenance horror stories that come out of columbia helicopters, so I'm not surprised to see this.

[bushman14]

@marine6172 phrogs are heavy turds, dude. these 107's are stripped down and light, light, light. So light that the initial imbalance caused by the blades being swept forward at rest tosses the front end around until the blades lead/lag to their dynamic operating position. The RPM's are way too low at startup to induce ground resonance. And a final note, all the Columbia maintenance horror stories you hear are caused by Marines who think they know how it all. Bar none.

[marine6172]

@bushman14 I see I touched a nerve. Phrogs are heavier, yes, but they also have a pair of 1700 turbo shaft balls and upgraded drive and rotor systems that can out carry and out run many a medium lift chopper, 107's included. The horror stories were told by former Marine mechanics who had transitioned and were able to observe the 107 maintainers and their practices. It was so bad, it even made some of them re-enlist. Now that's bad! We may not share views, but I'm glad we share a passion. Peace.

[KingOfSchmucks]

That's a happy looking chopper.

[vespapreta]

só pra testa xD

[FPVsean]

did they change their name to helifor recently? i mean, as in a week recently?

[graffie]

big pimp'n with them hydrolics.

[jetranger7803]

why is it jumping at low rpm?

[taofledermaus]

If the chopper is rockin', don't bother knockin'!

[markvinas31]

quite smaller than ch-47?

[FSimviator]

I always find it amazing how they sync the rotors to turn without hitting.

[DKF22]

isnt one higher than the other?

[FSimviator]

I guess you're right. I couldn't tell in this video, but they are.

[1SFODdelta]

Lowrider

[guitartec]

Make sure you pee BEFORE the rotors ramp up.

[AAzmanacob]

Wow!! Dancing beast....

[pgiustino]

Interesting. Rotors produce a harmonic at start up.

[Marshall7302]

boy do they ever. I didnt know boeing made a counter rotating tamdom shaft chopper. Its like the small version of a chinook ch47

[decibully1984]

It's actually older than the CH47 by a year or two. This is the civilian model of the CH-46 Sea Knight. The U.S. Navy flew the Sea Knight until 2004, and the U.S. Marines are still flying them.

[nicocrux]

Its not a Chinook. Its a Ch-46 Sea Knight variation

[northernal321]

the pilot must be sitting there thinking "omg this is so embarresing" my aircraft is like a horney old dog!!

[mark675]

HAHAHA!! quality comment

[jjjazzycraig]

if the chopper be a rockn,,,,

[crazyrum]

There was still some ground resonance at the beginning...

[franzjosefnz]

thats not ground resonance, its because at a certain point there is not much weight over the nose and then as the blades rotate there comes a bit more weight at the front causeing the nose to bounce up and down kinda like pushing car suspension down. ground resonance is a whole different ball game.

[MrZlodeus]

From the outside, it looks like someone's screwing in the cockpit, LOL ))))

[SindreAHN]

hehe, ye

[jjjazzycraig]

if the sea night be a rock'n...dont come a knock'n

[Point432]

what a flying turd

[Nelson142356]

this is real right???

[quakermaas]

what ?..do you think the pilot and the man disconnecting the power are animated action figures ?

[Nelson142356]

sigh somebody said they were fake

[quakermaas]

OK. fair enough.

Well I cant spot anything fake about it and if it is fake it is very well done.

All so, I cant see the point why anybody would go to such lengths to make a very good fake video of a helicopter start up ?

[twcpilot]

the shocks are really affected!

[TyphoonBling]

nice chopper! I wonder how much this model runs for

[mrtreebus]

look like that bloke is pissing up the side of it!LOL

[DrunkEskimo]

It's called a Stubwing check. You know, looking for leaks. I always seemed to find one myself.

[mrtreebus]

Thanks Drew, I was just pissing around

;-) lol

[royaltonrotors08]

Don't come knockin' if the 107's rockin!

[themyth66]

The bounce at start-up is caused by the rotor blades not being in there respective balanced locations until they get up to speed and balance themselves out. Its worse when its cold as the fluid in the blade dampners is more viscous and it takes longer but its normal for this type of machine.

[christychackojohn]

So the blades are filled with viscous fluid for blade balancing?

[lst1195]

I read that the bounce is common, but what causes it?

[Tyler4240]

nice vid that bounce is very comman it happenes all the time, im a captain on a 107 my self for helifor looks like a columbia machine there we run the exact same ones

[onnovanbraam]

Pimp my Choppa; BV-107 with bouncy air suspension.

It should be the next big thing on MTV!

[osht1]

The rotor brake cause more wear and tear on the drivetrain and of course rotor brake wear.

[itsumonihon]

it does look like the rotorbrake was left on or something at the start

[osht1]

The rotor brake was not left on at start. The sound you hear at the beginning is the sound of the GPU.

[planedude91]

interesting bounce in the beginning, harmonic vib?

[geetarwanabe]

probably more likely just the weight of the blades bouncing the helicopter as they start up slowly

[osht1]

The lag dampers allow the blades to shift forwards while the blades are sitting static. This means that the blades will throw off the balance of the rotor heat until they spin up to a speed high enough for centrifugal force to pull them back into a balanced configuration.

[Focha]

Hi there, nice video! The first sound was GPU working right? Or was that the APU?!

Best regards.

[plani107]

GPU, big ol' gas motor

[JULIOBLITZ]

@Focha GPU !

[bushman14]

Was that blade tape I was hearing???

[sdrfgvrfgvsfravgdsvS]

fucking pilots!!! xD

lol

[codeman107]

Is that The Pearl in Coco-traz Yog1?

[plani107]

sure is....

[codeman107]

Would that be Coco-traz and the Black Pearl Yogi?

[hueyleader]

Wild video..Thanx..Jerrylee///