1/5 scale FW 190 vs A6m Zero

[COndor06]

My buddy and I are RC nuts and love to fly large scale warbirds. We decided to put up our FW 190 and A6M Zero for a few simulated dogfight passes. The 190 is a bit larger with an 86 inch wingspan but both have DLE 55 engines.  I think the 190 might be a bit faster.

http://www.youtube.com/watch?v=u3E3RE6gYi4

[ink]

cool man, looks fun

[Bodhi]

Definitely looks fun.

[COndor06]

At $3000 each it gets a bit scary flying them together. One thing about these aircraft, they all come with expiration dates.

[ink]

At $3000 each it gets a bit scary flying them together. One thing about these aircraft, they all come with expiration dates.

exactly why I haven't gotten into it....6 kids = very limited toys

[Gman]

Awesome, they have more guts that I do with a 3000$ plane.  My friends and I buy those cheap 150$ foam planes from either Parkzone or Horizon Hobby, and try and crash each other out of the sky with them occasionally, but only with planes that are getting old and worn out or have some sort of damage that doesn't pay to repair.

Great sounding motors on those models, I know some of the radial model motors are absolutely incredible nowadays.  In a couple years I may build one, but for this year, I'm sticking to learning the electrics and 450/500 class helo's. 

[homersipes]

heres a video of my dads 1/5 fw190, starts at 6:30 nobody knows what went wrong
http://www.youtube.com/watch?v=L4mJfsIPPfw
lost control when retracted landing gear, the right bank he had full left aileron and rudder, didnt matter what he did.  will see if I can find the pictures of the remains when I get home from work.

[COndor06]

I have seen that video before. If he had no control he either had an onboard battery failure or got locked out on the radio. If it happened after the gear was retracted and he was using electric retracts I would attribute it to a gear hang. That would put a huge load on the battery. Enough to brown out the receiver.

If he was using the standard JR connector through the receiver to connect his battery, those connectors are only rated for 3.5 amps. With 9 servos (which is the least amount he would be running to fly a plane of that size) and a gear hang you would be looking at 9 amps minimum.

What I don't understand is the wing failure. It shouldn't have come apart in the air like that. Its like he forgot to install the wing tube. I doubt that's the case but the indicator would be both wings coming off the fuse like that. Or he might have had a hard landing that fractured the wing tube on another flight.

That's why I don't use carbon fiber wing tubes. I use aluminum. They will bend but they won't come apart.

Of course all I am doing here is guessing and I am sure if your Dad is flying planes of this size and quality he already knows this information. I feel for him in a situation like this. We all get the opportunity to watch our little masterpieces die a violent death at some point in time. Just part of the madness.

[BreakingBad]

I tell ya if one of those things hit a person it likely kill them.  Pretty neat tho.   

[COndor06]

Yeah, 25-30 pounds moving at 100 MPH plus speeds would most certainly leave a mark. But if you really want to get crazy. Add a five blade rotor system on a scale MD 500 heli. Its a human Veg-O-Matic but I love to fly it. I fly it at different RC shows around the US.

https://www.youtube.com/watch?v=hCXAtVOHtv8

[homersipes]

I have seen that video before. If he had no control he either had an onboard battery failure or got locked out on the radio. If it happened after the gear was retracted and he was using electric retracts I would attribute it to a gear hang. That would put a huge load on the battery. Enough to brown out the receiver.

If he was using the standard JR connector through the receiver to connect his battery, those connectors are only rated for 3.5 amps. With 9 servos (which is the least amount he would be running to fly a plane of that size) and a gear hang you would be looking at 9 amps minimum.

What I don't understand is the wing failure. It shouldn't have come apart in the air like that. Its like he forgot to install the wing tube. I doubt that's the case but the indicator would be both wings coming off the fuse like that. Or he might have had a hard landing that fractured the wing tube on another flight.

That's why I don't use carbon fiber wing tubes. I use aluminum. They will bend but they won't come apart.

Of course all I am doing here is guessing and I am sure if your Dad is flying planes of this size and quality he already knows this information. I feel for him in a situation like this. We all get the opportunity to watch our little masterpieces die a violent death at some point in time. Just part of the madness.

it was a 1 piece wing, not sure how the inside was built and it was its first flight   yeah he has built probably 20 big birds the same size as that, and is VERY picky of the building.  He knows another guy that was building the same plane from same plans it is now a hangar queen as he is scared to fly it

I tell ya if one of those things hit a person it likely kill them.  Pretty neat tho.   cheers
Posted on: Today at 11:56:08 AM
Posted by: COndor06

I did see a 45% extra 300 go through and I mean through an rv.  he had radio problems, unknown what exactly happened, but if anyone was in the rv it would have killed them had to be doing atleast 150 mph

[Babalonian]

I have seen that video before. If he had no control he either had an onboard battery failure or got locked out on the radio. If it happened after the gear was retracted and he was using electric retracts I would attribute it to a gear hang. That would put a huge load on the battery. Enough to brown out the receiver.

If he was using the standard JR connector through the receiver to connect his battery, those connectors are only rated for 3.5 amps. With 9 servos (which is the least amount he would be running to fly a plane of that size) and a gear hang you would be looking at 9 amps minimum.

What I don't understand is the wing failure. It shouldn't have come apart in the air like that. Its like he forgot to install the wing tube. I doubt that's the case but the indicator would be both wings coming off the fuse like that. Or he might have had a hard landing that fractured the wing tube on another flight.

That's why I don't use carbon fiber wing tubes. I use aluminum. They will bend but they won't come apart.

Of course all I am doing here is guessing and I am sure if your Dad is flying planes of this size and quality he already knows this information. I feel for him in a situation like this. We all get the opportunity to watch our little masterpieces die a violent death at some point in time. Just part of the madness.

*raises hand from the peanut stands* The youtube footage isn't of high enough quality, but it looks to me as during the take-off roll that the left gear, shortly before finally getting compeltely airborne, gets slightly bent/twisted a bit.  Then there's the gear hang issue, and if you watch slowly, it was only one wing failure (looks like a the left root) followed imediatley by the opposite wing due to the sudden increased load.  It wouldn't explain the transmiter issue, but maybe they tried to raise the gear for too long, or maybe after it finaly retracted it created an unusual airflow.....  could be more than just one individual reason that compounded the issue too.