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« Reply #25 on: July 29, 2018, 07:27:47 PM »
taksh
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elevator & rudder

IMG_20180729_192142.jpg
Re: 33 inch blu baby build
* IMG_20180729_192142.jpg (38.09 KB, 605x800 - viewed 307 times.)
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« Reply #26 on: July 29, 2018, 08:14:59 PM »
K K Iyer
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@taksh
For pushrods for foamies, phool jhaadu ki teeli is the lightest option.
See my earlier post.
I never needed cycle spokes or umbrella wires for push rods.

For connecting to horns, use wire from paper clips. Tied on with dhaaga, sealed with a drop of CA
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« Reply #27 on: July 30, 2018, 08:40:32 PM »
taksh
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@K K Iyer Sir
Today i tried umbrella rods but later used a few drops of CA and then it stuck. Now i am going to try bamboo and wire from paper clips.
 
« Last Edit: July 30, 2018, 09:56:22 PM by taksh » Logged
 

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« Reply #28 on: August 01, 2018, 09:01:33 PM »
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Rudder & elevator Done.
@K K Iyer sir Thanks. Your method works. I used bamboo and paper clips but wire(from paperclip) gets bend at maximum throw and again come back in its position but this happen only at rudder side.

Now my question is maximum throw of both rudder and elevator and how to measure maximum throw as angle. i mean right method to measure.
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« Reply #29 on: August 01, 2018, 09:36:22 PM »
K K Iyer
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Rudder & elevator Done.
@K K Iyer sir Thanks. Your method works. I used bamboo and paper clips but

1. wire(from paperclip) gets bend at maximum throw and again come back in its position but this happen only at rudder side.

2. Now my question is maximum throw of both rudder and elevator and how to measure maximum throw as angle. i mean right method to measure.

1. It means that the servo is pulling/pushing the rudder more than it can move.
a. If your tx has TVA, reduce it to about 80% on rudder channel
b. If your tx has EPA (end point adjustment), reduce it to about 80% on both sides of rudder channel
c. If your tx has dual rates, select about 80% on high rate
c. If you have none, move the pushrod one hole closer to center on the servo arm, or one hole farther from the base on the rudder control horn

2. Use a protractor (also known as a D) from a geometry box!
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« Reply #30 on: August 01, 2018, 09:49:21 PM »
taksh
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 Head Scratching
I think video is better.
I will upload video.

I have 9x. I don't know tva,epa  dual rates. I will search on google.
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« Reply #31 on: August 02, 2018, 10:48:05 AM »
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TAKSH,

Your TX has end point settings. I would suggest you download the TX manual and read about it.

In your first model you dont need to put Expo , dual rates etc. just adjust the end points so that overthrows are not there.

Keep reading of all those stuff and do trial on non flying model.... and implement it on flying model as you become expert in flying.

Frankly while first time flying you would struggle to change the switch for dual rates.
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« Reply #32 on: August 03, 2018, 02:00:47 PM »
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barbecue skewers kaha milenge? wings ka fitting ka liya chahiye.
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« Reply #33 on: August 03, 2018, 05:10:56 PM »
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How to balance cg? there is two marking 2.6 inch and 2.3 inch.
So, plane cg should have to be balanced between 2.6 and 2.3 inch?
i mean cg 2.6 or 2.3 inch ka bich honi chahiye ?
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« Reply #34 on: August 03, 2018, 05:18:31 PM »
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Confusion hai baas thodi si.
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« Reply #35 on: August 03, 2018, 05:19:39 PM »
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Confusion hai baas thodi si.
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« Reply #36 on: August 03, 2018, 06:42:23 PM »
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To find cg
Remove all electronics, motor battery ecs Rx servo
Just have model
Of course at this stage model is surely tail heavy now add some coins by taping it with transparent plastic tape.
Then throw your craft at ground level about from 1m from ground
If it is again tail heavy add some coins again, do this several time till the aircraft become level when you throw in air 1m from ground surface.
When you see if it is flying level then stop adding coins.
When craft lands on surface lift it at such point such that it becomes level.
Move 1 inch forward from that point and mark this point as cg.
Now add your electronics, and balance a very little nose heavy by battery adjustment.
And take out for flying.
This is what I'm doing from several years, and all models are flying great, no craches till now due cg point.
Hope you understand.
Have a nice flight.
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« Reply #37 on: August 03, 2018, 06:49:46 PM »
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Sir,
Why 1 inch ahead  the CG should be??
And towards the nose or tail??
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« Reply #38 on: August 03, 2018, 06:51:02 PM »
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Remember nose heavy plane are not good to fly and tail heavy are unable to fly...
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« Reply #39 on: August 03, 2018, 06:57:26 PM »
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@taksh,
It will be ok if it balances about 2.5 behind the leading edge.
This is within the range mentioned on the plan (2.3-2.6)
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« Reply #40 on: August 03, 2018, 07:03:26 PM »
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Sir,
Why 1 inch ahead  the CG should be??
And towards the nose or tail??
The 1 inch is to balance any wrong measurement in cg.
And it should be towards nose.
Bcoz if you make if toward tail the plane may be nose heavy and when you add battery to balance it, you will have move battery back and the aircraft may get tail heavy.
So counteract this the cg point is taken 1 inch toward nose so that when you balance it by battery the will have to move forward which will make plane nose heavy.
Nose heavy are better than tail heavy to avoid crash.
Hence when you move it forward 1 inch then for next flight the plane will be available to move battery to back.
If 1 inch is taken toward the plane may get crash and ofcource it will be not available to adjust the battery.
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« Reply #41 on: August 03, 2018, 07:34:18 PM »
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There are two simple methods in use for the last 100 years or so.
1. Balance the model within the range shown on the plans (available in this case)
2. If the plan does not indicate, balance between 25-33% of the chord from the leading edge.

Hope this helps. And does not confuse.
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« Reply #42 on: August 03, 2018, 10:55:13 PM »
taksh
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@tictoc21 @K K Iyer
Thanks
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« Reply #43 on: August 09, 2018, 02:44:37 PM »
taksh
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I have used A2212 1000kv motor and 1045 propeller and I tested plane in my home.
Rudder is not at center So, i used subtrim functions of tx so rudder can be in center.
I just increased throttle slowy and many times i increased throttle to 50% fastly then i decreased throttle to 0%.
but problem is coming. Plane is automatically turned to left side.
Rudder problem? or troque roll problem i mean i need to set thrust angle?
what's problem with my plane?
Note: I have installed landing gear to my rc plane then i tested. Landing gear is fixed with zipties and glue gun and CA.
Plane's cg is not balanced. Tail is heavy. I just tested plane. I just  want plane to move forward but plane moved but plane also moved left side.
Motor rotation & propeller : Counter clock wise.

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« Reply #44 on: August 09, 2018, 03:27:10 PM »
prabal276
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One step at a time :)



the landing gear may not be straight.
In my Old Fogey , the landing gear caused the same problem......
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« Reply #45 on: August 09, 2018, 06:07:58 PM »
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Push the model by hand, without running motor.
See if it rolls straight.
If not, wheels are not aligned, or more friction in one wheel.
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« Reply #46 on: August 10, 2018, 10:05:36 AM »
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Taksh ......

Paste the pic of the model........
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« Reply #47 on: August 10, 2018, 10:15:48 AM »
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DIYer



In order you might want to
- affix the LG property with screws or glue or insert in slot, not with zip ties.
- the LG is not properly perpendicular to fuse
- the left wheel is stuck, while the right is moving, both of them are not moving at the same speed
- if it's going a little to the left and can be steered using the rudder, use rudder on takeoff
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« Reply #48 on: August 10, 2018, 02:23:06 PM »
prabal276
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One step at a time :)



Also, have you given excessive left angle to the motor?
Check for that as well.
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« Reply #49 on: August 10, 2018, 04:04:39 PM »
taksh
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https://i.imgur.com/r8zNk3e.jpg
33 inch blu baby build

https://i.imgur.com/9SJXV43.jpg
33 inch blu baby build

https://i.imgur.com/gcsRjRf.jpg
33 inch blu baby build

https://i.imgur.com/0uyPSK6.jpg[/img[img]https://i.imgur.com/cvicO9u.jpg
33 inch blu baby build

https://i.imgur.com/YacjXeC.jpg
33 inch blu baby build

https://i.imgur.com/o1Dmvze.jpg
33 inch blu baby build

https://i.imgur.com/dktfcSh.jpg
33 inch blu baby build
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