The Coffee Shop - For general discussion

[OliverW]

That plane really brings back memories. That was my son's first Formula 1 that used an OS 40 and 65 % nitro (no throttle-either on or off) that reached speeds of 180 to 200mph. Watch out for landings, the plane floats like a butterfly, if you fly it in the ground effects. All landings were one try since the engine was off. He was the only youngster to race pylon(age 11 by the way) and would usually take first or second in the races in standard class over a 2 year stint. (move on to heli's).
If it is a standard Formula 1 and you have a need for speed, mount a 40 with a tuned pipe, you should hit speeds of 130-150mph depending on how much nitro you use.

This one is a little small for that. Its only a 36" span and is meant for electric sadly

 

[Phin G]

Just arrived at our campsite in stratford upon avon and it has lots of fields and the site manager says we can fly there! He is into model aviation so my dad gave him a go on his plane. Going to be a fun 2 weeks

 

[Battery800]

Ok, so say that I want to make a 2 is meter plane that is decently fast and powerful. Would something like a 13 gram metal gear be enough? Do I need bigger servos for the ailerons and flaps?

 

[The Hangar]

Ok, so say that I want to make a 2 is meter plane that is decently fast and powerful. Would something like a 13 gram metal gear be enough? Do I need bigger servos for the ailerons and flaps?

What type of plane? If it’s a 3D plane you’ll need some serious servos to move the big control surfaces but if it’s going to be something like a cub you’d be good with some emax 20g servos. That’s assuming you’re doing a foam build not a balsa one. You could get away with smaller servos on the flaps, you could honestly probably get away with plastic gear 9g servos for them, but for all your critical control surfaces I would use those emax 20g servos.

 

[Battery800]

What type of plane? If it’s a 3D plane you’ll need some serious servos to move the big control surfaces but if it’s going to be something like a cub you’d be good with some emax 20g servos. That’s assuming you’re doing a foam build not a balsa one. You could get away with smaller servos on the flaps, you could honestly probably get away with plastic gear 9g servos for them, but for all your critical control surfaces I would use those emax 20g servos.

It’s pieliker’s cormorant. Designed for mild aerobatics.

 

[Battery800]

What type of plane? If it’s a 3D plane you’ll need some serious servos to move the big control surfaces but if it’s going to be something like a cub you’d be good with some emax 20g servos. That’s assuming you’re doing a foam build not a balsa one. You could get away with smaller servos on the flaps, you could honestly probably get away with plastic gear 9g servos for them, but for all your critical control surfaces I would use those emax 20g servos.

Do big servos require a different battery or something different?

 

[The Hangar]

Do big servos require a different battery or something different?

Not unless you get HV ones then you run them on a 2s lipo, however you don’t need HV servos for the cormorant.

 

[Ketchup]

Do big servos require a different battery or something different?

You probably wouldn’t need another battery but you should run it with a separate external BEC. I doubt that any ESC with BEC could support 4 20 gram servos and extra flap servos.

 

[Battery800]

You probably wouldn’t need another battery but you should run it with a separate external BEC. I doubt that any ESC with BEC could support 4 20 gram servos and extra flap servos.

Ok, where do I get one?

 

[Battery800]

Not unless you get HV ones then you run them on a 2s lipo, however you don’t need HV servos for the cormorant.

But one scaled up about 150% is a possibility

 

[Hondo76251]

You probably wouldn’t need another battery but you should run it with a separate external BEC. I doubt that any ESC with BEC could support 4 20 gram servos and extra flap servos.

+1 for separate BEC. Brown outs aren't much fun...

 

[Test Fly RC]

I guess I wont be able to post a FF recap video today (because I still need to edit it) but I'll post it hopefully within a few days!

I'll post a bush plane build challenge video later on to night!

 

[Battery800]

I don’t have any experience with this stuff, so after watching a few videos, I think it works like this:
the bec is attached (somehow?) to the ESC and then the positive wire of the ESC. The wire of the ESC plugs in as usual and the bec goes in any spare channel. Right?
I don’t know how this attaches to the ESC and what happens if there are two ESCs

 

[Battery800]

What type of plane? If it’s a 3D plane you’ll need some serious servos to move the big control surfaces but if it’s going to be something like a cub you’d be good with some emax 20g servos. That’s assuming you’re doing a foam build not a balsa one. You could get away with smaller servos on the flaps, you could honestly probably get away with plastic gear 9g servos for them, but for all your critical control surfaces I would use those emax 20g servos.

I found some emax 19g servos, close enough but how big of a bec would I need for say- 6 of these servos (probably will use 4 but just to be safe)

 

[Ketchup]

I don’t have any experience with this stuff, so after watching a few videos, I think it works like this:
the bec is attached (somehow?) to the ESC and then the positive wire of the ESC. The wire of the ESC plugs in as usual and the bec goes in any spare channel. Right?
I don’t know how this attaches to the ESC and what happens if there are two ESCs

Remove both red wires from both ESCs. You will need a special connector for this next step. One end goes into the battery, two go into the ESCs, and one goes to the BEC if I remember correctly. The BEC can then plug into any spare radio channel (there is usually a slot for batteries, but that's also the bind plug slot so you may need to get creative for binding).
Now that's if I remember it all right... Somebody will need to check my work here.

 

[Ketchup]

Ok, where do I get one?

Any hobby shop or wherever you shop online...
I might need to get a BEC for a future project and I think this is the one I was looking at:
https://hobbyking.com/en_us/yep-20a...D=40129&indexName=hbk_live_products_analytics
I would check others online so that you can find what's best for your uses though.

 

[Battery800]

Remove both red wires from both ESCs. You will need a special connector for this next step. One end goes into the battery, two go into the ESCs, and one goes to the BEC if I remember correctly. The BEC can then plug into any spare radio channel (there is usually a slot for batteries, but that's also the bind plug slot so you may need to get creative for binding).
Now that's if I remember it all right... Somebody will need to check my work here.

Ok... now I’m super confused

 

[Ketchup]

Ok... now I’m super confused

I have the special ability to confuse even myself at times...
I'll draw a diagram and get some online sources to make sure I'm right. Be back in a minute with an answer.

 

[Battery800]

In this project that I am imagining that may or may not come to a flite fest Ohio near you in the future, I will probably use two sunnysky 2814 motors that will draw about 80 amps each so 2 100 amp ESCs to be safe. Then, I am planning to use 4-5 20g servos depending on whether I go for a rudder or not, and 2 13 gram servos for the flaps. With this setup, I’m wondering if two included becs will double the bec capacity or not change it, and if that will be enough considering that they are 100 amp ESCs after all...

 

[Battery800]

Remove both red wires from both ESCs. You will need a special connector for this next step. One end goes into the battery, two go into the ESCs, and one goes to the BEC if I remember correctly. The BEC can then plug into any spare radio channel (there is usually a slot for batteries, but that's also the bind plug slot so you may need to get creative for binding).
Now that's if I remember it all right... Somebody will need to check my work here.

Would the special connector be a tri-y harness or a y harness connecting the ESCs and then another to connect that to the bec?