Learn How To Fly W/ The Rc-help Trainer. Build & Fly Guide

[Sammy786]

I will get the rest done and before i glue the wings and when i get to that stage i will ask you more details about that I think its a bit early cause i just ordered my motor and ESC should be here in 3 to 10 day it will take few day till i stick the plans and cut it out.

 

[Tony]

Right on. Just let me know and I will do all I can to help out.

 

[Sammy786]

Thanks mate

 

[maddy23285]

Hi,
I am trying to build Trainer V3. I just completed the wing section, but is that really mandatory to make 45 degree angle cut on leading edge of airfoil? Actually I am not perfect in cutting foamboard. I am from india and importing foamwerks straight bevel cutter would be really very costly.

I just noticed the picture of your Trainer plane above, you joined middle kfm about a quarter inch back from the edge of bottom kfm. I would have noticed this before coz now I joined every piece of KFMs together

Thanks

- - - Updated - - -

Please check the following images and give me your suggestion.









Feeling really like a fool.. I joined both section of wing without making 45 degree angle cut. Now it will be hard to make the exact cut, coz the wing is dihedral.

- - - Updated - - -

One more thing.. I am working on V1 not V3. I wrongly mentioned V3 in my above comment.

 

[Tony]

Of you don't cut the leading edge of the wing, it will have more drag. This is why I designed the V3 the way I did. No need to cut that wing. If you want to leave it and see how it flies, go for it. Justremember to post back on how it went.

 

[maddy23285]

Ok, will update you soon

Thanks

 

[Sammy786]

Hi tony
I'm up to making the motor mount form the the pop sticks
On the video you have said to glue 3 side to side and 3 on top of that up and down but but you have also said to glue 2 more from the inside of the fuselage how do I do that when the foam it of the motor have already been glued how do I get to glue from inside of fuselage?

 

[Tony]

I'm going to have to watch the code to remember what i was talking about. Will try to do that when i get home.

 

[Sammy786]

Thanks mate could you also help me the wings dihedral I have glued a carbon fiber 5mm tube just like you have said in the video I have put a slot through the wing and glued the carbon fiber while the other end is sticking out cause i haven't glued both wings together I'am doing what you have said gonna put glue on the other side of the carbon fiber and just slide it through. Now NOw here how should i create dihedral with the carbon fiber tube ?
I have used a lot of glue i mean a lot lol It was the first time I ever used a glue gun lol I hope it does fly I have put a lot of time and effort in this.

 

[Tony]

There are two ways you can do this.

Most beginner builders have had an issue of the wing folding up right in the center. I have never had this issue and have flown quite hard, but it still happens.

What you can so is create what is called Polyhedral. The center of the wing is flat, allowing you to put a spar where the most force is applied. But the wing tips are angled up about 20º or so. This is quite stable and a great idea, but you will need to measure and cut each wing half to do it. But the advantage is, where it connects to the fuse, will be stronger with the spar running across the middle.

The other way is to do it as I showed in the video (again, I'm trying to get the time to do a V3 video with better techniques) and just use a can or something to add about a 3" rise to one of the wings, adding the correct amount of dihedral. But, you do run the risk of folding the wing. Although if you are using as much glue as I think you are, I doubt you will have an issue.

Now, it's up to you on what one you want to do. If you google "polyhedral", you will see what I mean by that wing type. Very stable, and still strong.

 

[maddy23285]

Re: Article: Learn How To Fly w/ The Rc-Help Trainer. Build & Fly Guide

Hi,

I made other parts of trainer V1 also. Please check the images and give me your suggestions

I wanted to start with V3, but here in India we do not have any source of dollar tree foam board. We have only deprons available in market and bending derpon is very tricky most of the time it breaks in part

- - - Updated - - -

Hi,

I made other parts of trainer V1 also. Please check the images and give me your suggestions










I wanted to start with V3, but here in India we do not have any source of dollar tree foam board. We have only deprons available in market and bending derpon is very tricky most of the time it breaks in part

- - - Updated - - -

Another thing here in which I need your suggestion. Can I use sand block on edge of only upper and bottom kfm to give 45 degree angle?

Thanks

 

[Tony]

So far, that plane is looking great. Just make sure to glue the tail feathers on straight and use some spars of some kind to stiffen the tail feathers up so they don't break.

There is a way to fold depron. You put packing tape on one side, and score the depron on the other side where you want to fold it. The score lines will allow you to bend it, adn the tape will keep it from cracking. Hope that makes sense.

 

[maddy23285]

One more thing. For this plane where I fixed every parts of main wing together without making 45 degree angle cut on leading edge of airfoil, can I use sand block on edge of only upper and bottom kfm to give 45 degree angle?

will it help to reduce drag in anyway?





Thanks

 

[maddy23285]

As per your suggestions I placed a carbon fiber spar in middle of elevator

 

[Tony]

Yeah, those tail feathers are looking great!

As for the wing, yes, you can sand the leading edge. In fact, since you are working with depron, you can actually round the edge over and make it nice and smooth. No need to try to do what I showed in the video. Rounding it over should be a little easier.

 

[maddy23285]

Thnaks, I will try to sand edges to give nice standard airfoil shape.

One more question what is 400-450 size motor means?

I have following components
Brushless Motor:
Turnigy 2200 KV
Turnigy 1450 KV
Mystery 930 KV

ESC :
Mystery 30A

Battery:
11.1V 1800 mAH 20C

Props:
8x4.5
9x4.5
10x4.5
7x6
8x3
10x7

I have already ordered Turnigy 1100 KV motor and Turnigy plush 40A esc from hobbyking which is in transit and I think it will take 20 more days to arrive.

What combination of components should I use in this trainer?

 

[Tony]

Can you link me to the motors that you have? The 930 and 1450 motors could work as long as they are about 300w and weigh over 60g but less than 90.

 

[maddy23285]

D2826-6 2200kv Outrunner Motor

D2822/14 Brushless Outrunner 1450kv (US Warehouse)

Mystery A2212-15 930KV Outrunner Brushless Motor - Free Shipping - DealExtreme

- - - Updated - - -

Following items are in transit

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18969
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=2165

 

[Tony]

The 2200 is a little light, but the wattage is up there. If you want to try that one, I would run it on a 3s battery with a 6.4 prop. However, that prop may not be big enough to go around the fuse and may be working against it's self. You can try your 7x6, but land after a little bit and check the temp of the motor and ESC.

The 1450 is too small and will burn up on this plane.

The 930 has a wattage rating that is too low. So it will get too hot as well.

Hope this helps.

 

[maddy23285]

Following items are in transit

Turnigy D2836/8 1100KV Brushless Outrunner Motor
TURNIGY Plush 40amp Speed Controller

Should I wait for these to arrive?