CARBON FIBER DISCUSSION

[Piotrsko]

Bigger does tend to reduce wing load, but not a hard fast rule. My Grand Espirit glider weighed about 15 lbs but it had 9 ft wing. The Olympic was a tank at 20 lbs but out thermalled the Espirit on smaller wingspan.

 

[Zoom Master]

Mostly going really fast means it gets really small really fast and you want to keep orientation. Can't fly it if you cant actually see which way it's going, or if there are things in the way. Really big takes longer to lose that orientation. Unsure if FPV changes the small fast problem as I haven't flown that way. It might as long as you have signal and control

Fpv does infact solve the small issue. There are a bunch of students out there building a high speed rc airplanes made for Mach 0.8 and they are using a fpv camera.

 

[Zoom Master]

Big planes are also more stable, yours seems to have a decent size.

It does I didn’t want my airplane to be to big like the hjk big monster. Because the bigger ur airplane is the bigger the motor, batteries, esc, etc and the more expensive it is. So I made mine a reasonable size.

 

[Zoom Master]

Maybe, I guess it’s because when you scale up, wing loading generally goes down, resulting in a more stable plane. Bigger planes can also hold the massive motors these speed guys use @Zoom Master

True I built a large airframe because Im planning on using a fairly powerful motor so I had to build it a bit large.

 

[Zoom Master]

And I guess its possible for a small rc plane to go super fast these airplanes are proof of that.

300 mph carbon funjet (30 inch wingspan)

305 mph dynamic soaring glider (40 inch wingspan)

360 mph dynamic soaring glider (60 inch wingspan) (same wingspan as my airplane)

The smallest airplane that I know of that has gone 400 mph is this airplane right here. I had some trouble finding out details about this airplane as the owner of it clearly hasn't posted about this airplane anywhere online. But I found out this is a 25 year old pulse jet with a jet engine

with a wingspan of 40 inches.

 

[Houndpup Rc]

Wouldn't say bigger is more stable, but bigger does tend to be less sensitive to odd wind gusts. Then there is Einsteins law E= Mc2

Smaller ones can be more prone to flutter I believe....

 

[Houndpup Rc]

Bigger does tend to reduce wing load, but not a hard fast rule. My Grand Espirit glider weighed about 15 lbs but it had 9 ft wing. The Olympic was a tank at 20 lbs but out thermalled the Espirit on smaller wingspan.

But the bigger you go the more expensive things get, because you have to start getting bigger electronics, bigger spars, bigger servos, bigger batteries ect.

 

[Houndpup Rc]

Fpv does infact solve the small issue. There are a bunch of students out there building a high speed rc airplanes made for Mach 0.8 and they are using a fpv camera.

But what if you FPV signal dies...What if you have never flown FPV (It's take practice)

 

[Zoom Master]

Smaller ones can be more prone to flutter I believe....

Yes

 

[Zoom Master]

But what if you FPV signal dies...What if you have never flown FPV (It's take practice)

Well cant u say the same thing about fpv drones ? What if ur fpv signal dies on ur fpv drone ? And most people doing something like this have experience wit airplanes and probably have experience with fpv.

 

[Zoom Master]

But the bigger you go the more expensive things get, because you have to start getting bigger electronics, bigger spars, bigger servos, bigger batteries ect.

True but most people dont care how much it's gonna cost really they know how much they are gonna be spending. And if u look at any high speed rc airplanes u will see how expensive their engines, controllers, batteries and servos are.

 

[Zoom Master]

True but most people dont care how much it's gonna cost really they know how much they are gonna be spending. And if u look at any high speed rc airplanes u will see how expensive their engines, controllers, batteries and servos are.

I dont think they will have a issue spending a bit more money or even a lot more money on a bigger airplane if it means they can go faster.

 

[Houndpup Rc]

Well cant u say the same thing about fpv drones ? What if ur fpv signal dies on ur fpv drone ? And most people doing something like this have experience wit airplanes and probably have experience with fpv.

Not necessarily...@Mr man is pretty good at flying buit he only flies LOS...Me, I am not as experienced flying, but am not bad flying FPV...With FPV drone you aren't usually going 200-300mph and They have RTH a lot of times so if something goes wrong...

 

[Houndpup Rc]

True but most people dont care how much it's gonna cost really they know how much they are gonna be spending. And if u look at any high speed rc airplanes u will see how expensive their engines, controllers, batteries and servos are.

They HAVE to have that good gear....I am sure they don't enjoy spending it and if they didn't they would probably end up killing people.

 

[Houndpup Rc]

I dont think they will have a issue spending a bit more money or even a lot more money on a bigger airplane if it means they can go faster.

Depends how rich you are...I am sure ALL of those guys are pretty well off....

 

[Zoom Master]

Not necessarily...@Mr man is pretty good at flying buit he only flies LOS...Me, I am not as experienced flying, but am not bad flying FPV...With FPV drone you aren't usually going 200-300mph and They have RTH a lot of times so if something goes wrong...

They have a RTH ?? And we now know that fpv will be just fine for a plane going 200-300 mph because there have recently been fpv drones built that have gone 300 mph I believe it is this one right here

 

[Houndpup Rc]

They have a RTH ?? And we now know that fpv will be just fine for a plane going 200-300 mph because there have recently been fpv drones built that have gone 300 mph I believe it is this one right here

I said most....

 

[Houndpup Rc]

They have a RTH ??

You can make your plane have RTH too....But you will want to get used to setting it up on slower planes first.

 

[Zoom Master]

They HAVE to have that good gear....I am sure they don't enjoy spending it and if they didn't they would probably end up killing people.

They probably dont and yeah they have to get the good gear when they are going that fast but I haven't seen people with fast airplanes with any good radios ill give a few examples in a min. But they all seem to use old frsky, graupner radios or some other company that u have probably never heard of whats up with that ?

 

[Zoom Master]

I said most....

ohhh