AXN Floater / Clouds Fly from HobbyCity

Started by anwar, December 24, 2009, 09:36:24 PM

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dileepbalan

Good video, Thanks Ujjwaana  :salute:
Regards
Dileep
Spektrum DX6i | AXN Floater-Jet

dileepbalan

My updates...
I have used Towerpro ESC 40A with the same motor which comes with AXN. Checked upto 50% of the throttle and it works fine. (http://www.depronrc.com/airplanes/airplane-reviews-what-others-are-saying/124-axn-floater-jet) But this ESC needs throttle to be programmed before use.

Now, bit confused to put RX, Lipo, ESC inside the AXN. Not getting any idea to manage the space. AXN users, please do post photos with canopy open to know, your space management. is it advisable to keep ESC and Lipo so close?

Regards,
Dileep
Spektrum DX6i | AXN Floater-Jet

anwar

Here is an AXN from the field today with lines made using black duck tape for better visibility.  The flyer started with the AXN about 5 sessions back, and is now ready to get his first glow model !

Makes a big difference in how the model is visible from the ground while flying.
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anwar

Quote from: dileepbalan on October 08, 2010, 07:45:17 PM
Now, bit confused to put RX, Lipo, ESC inside the AXN. Not getting any idea to manage the space. AXN users, please do post photos with canopy open to know, your space management. is it advisable to keep ESC and Lipo so close?

Will try to get pictures next time...

Basically, there seems to be just enough space between the servos and a 2200mAH battery inside the AXN to keep the ESC.  Be sure to trim off the excess length of control rods (or bend them out of the way) otherwise they creep into this space.  Make sure you finish all radio programming (including setting of reversal) before you trim off the excess control rod lengths.
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dileepbalan

This is my issue  :banghead:. I feel bit difficult to manage this compartment area, to put RX (AR6200), ESC and 2200mah battery. Let me know your suggestions  :help:

I had a plan to cut the portions which I have marked with arrows and dotted-lines, which will give enough space to put ESC and battery together.

If I cut like this, will it affect the 'CG' of the plane?

Can I keep the battery and ESC so close? Is it good practice?

Regards,
Dileep
Spektrum DX6i | AXN Floater-Jet

ujjwaana

1. You have poorly secured  3.5mm connector on the motor. The Heat shrink is not shrunk and may come off.
2. Push the ESC as front as possible to provide cooling. Keep the ESC and Battery separated. They should no touch
3. You seem to plan to cut only on one side. Splice eaqual amount on both the sides for a better CG on the roll axis.
Futaba 8FG Super | HK-450v2 | FA-22 Raptor |AXN Floater-Jet | FunJet | Black Horse Edge 540 | Amp Master 015 | 2.3M Big Brother

anwar

a.  Yes, cut from both sides... we all have done that.

b.  The circular ducts on either side will bring air to the depressed area between the battery compartment and the two servos. If you do it right, the ESC will fit in fine in that depression (that is the original design).  Just make sure the battery does not block the ventilation, you may have to cut some of the foam to ensure this.

c.  +1 on the heat shrink. Just use the butt (not the tip) of the soldering iron to shrink it down.

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ujjwaana

Quote from: anwar on October 18, 2010, 10:48:31 AM
c.  +1 on the heat shrink. Just use the butt (not the tip) of the soldering iron to shrink it down.

I use defunct Hair dryer and get finish better than HK products (Batteries etc)...
Futaba 8FG Super | HK-450v2 | FA-22 Raptor |AXN Floater-Jet | FunJet | Black Horse Edge 540 | Amp Master 015 | 2.3M Big Brother

dileepbalan

I have never used the Heat shrink tubes at all. The yellow color you are seeing is 'insulation tape', I just wrapped it with enough thickness to avoid short circuit. I need to buy the shrink tube. is it available in local shops?!

Anwar bhai and Ujjwaana, I would like to see how you have done. Pls upload photos

Yes, I will cut from both sides only. If I need to push ESC to the front, then I need to extend motor wires also, because the battery connecting cable of ESC is also very short.

Regards,
Dileep
Spektrum DX6i | AXN Floater-Jet

anwar

#84
Quote from: ujjwaana on October 18, 2010, 10:57:13 AM
I use defunct Hair dryer and get finish better than HK products (Batteries etc)...

Didn't know nerds cared about looks ;)

*IF* you have a hair dryer, it will work better.  Shrink tubes should be available in local electronics parts stores.  Put it on exactly like how you have put the tape on now (in terms of where it should start and end, or what lengths you should cut out and use), then shrink them.
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dileepbalan

As per your comments, I have used shrink tubes which I collected from Sai, Rcforall.

I didn't try to cut battery compartment, the space was enough for zippy 3S battery. But no space for ESC. I mean, I can pack both together but ESC will touch battery.

Finally, I have decided to put ESC outside! Planning to do my first flight tomorrow. Let me know your opinion

Regards,
Dileep
Spektrum DX6i | AXN Floater-Jet

dileepbalan

I have done my first flight, so exited. Thank you all for helping me.  :bow: :salute:

I was able to put it on air, after sometime (around 2min) when I was trying to land on top of bushes, bit out of control because of wind, crash landed. Thanks god, nothing serious but small portion of wing chopped off.

After crash landing both, wing cameout from fuse, and one of wing's push rod and connector went off. Prop came out and strangely motor was still running. I hope 'fail safe' was not working perfectly (I turned off TX immediately after crash landing)

one more thing I felt was, AXN feels bit difficult to climb up, also when I increase throttle speed was not that much I was expected. I feel, I was not tightly connected prop to the plane (when I checked again it was bit loose connected)

Regards,
Dileep
Spektrum DX6i | AXN Floater-Jet

Sreedhar

Congratulations on your first flight... {:)} {:)} crashes do happen its usual in the game so dont worry.. there is nothing we cant fix...

hmm the wings are not much injured i guess.... and you must never tturn off the transmitter untill you disconnect the battery from the rx...

Must check prop adapter indetail............ if you are using a prop saver and u feel its loose then change to a prop adapter so that you can tightly fix the prop to motor... did you check the cg??? did the motor come off???

dileepbalan

Yes, I checked the CG and With 2200mah 3S zippy Lipo + TowerPro ESC 40A configuration, the CG is spot on. Motor didn't came out. I got pushrod and Snaps from RcForall and I have put back the wing in action. I got 50MM fiber tape also from Sai, for putting it on the belly of AXN. Thanks Sai for nice suggestions.

I think we need to cover most of the parts which can damage on impact.

Regards
Dileep
Spektrum DX6i | AXN Floater-Jet

azhaguvel

The ESC which came with my AXN have a problem. I am now only building it. When ever i connect the ESC with my reciever it works well for sometime after which the reciever behaves crazy moving all the servos & shuts down. First i thought the problem was with reciever. But i replaced the ESC with a spare mystery 30amp ESC(thank god i ordered one) everything is working fine.

Why is this problem?
If my ESC is defective what parts can i salvage from it?

azhaguvel

I checked the amps consumed at full throttle using turnigy amp meter. It came only to 16.8amps. At near half throttle it is only about 5 amps  :giggle:

allthatido

Atleast post some pics..i am waiting for them since ages

ujjwaana

Quote from: azhaguvel on January 15, 2011, 11:06:38 AM
Why is this problem?
If my ESC is defective what parts can i salvage from it?

  - The BEC of ESC is not provide enough AMPs - its probably 1.5AMPs only
  - There is lots of binding in all the control surfaces due to horrible 'Foam' hinge. This puts extra load on the Servos.

I would highly recommend re-hinging of all the control surfaces with Scotch tape and some reinforcement of the the Tail plane with CF before flight. Do check the CG about the Horizontal axis of the plane (holding the Nose and Tail) any difference in weight of the wing should be fixed first.
Futaba 8FG Super | HK-450v2 | FA-22 Raptor |AXN Floater-Jet | FunJet | Black Horse Edge 540 | Amp Master 015 | 2.3M Big Brother

azhaguvel

Quote
  - The BEC of ESC is not provide enough AMPs - its probably 1.5AMPs only
  - There is lots of binding in all the control surfaces due to horrible 'Foam' hinge. This puts extra load on the Servos.

Yes i seriously doubt that. Cos when i tested the ESC after removing it from my AXN, the reciever is not shutting down(I tried to check it using a single servo). I have replaced the y-connector with two wires for aileron. It might be like its not able to supply the enough amps for the reciever so that its shutting down after moving all the servos crazy. Is that rgt?

Quote
I would highly recommend re-hinging of all the control surfaces with Scotch tape and some reinforcement of the the Tail plane with CF before flight. Do check the CG about the Horizontal axis of the plane (holding the Nose and Tail) any difference in weight of the wing should be fixed first.

Yes thats 100% correct. my left wing is little heavier then my right. First i thought it is for torque but my torque moves it further left so now i have to make my right more heavier to compensate for the weight & torque. A 15 cm steel scale weight at the wing tip made it even ;)(planning to keep my video tx there:P later.). I am planning to use the hinges which i have attached as pic. Can i cut out the attachments & use these hinges?

azhaguvel

As for ankur,
I haven't done anything different then the others have done here. why do you need a pic of mine :headscratch:.
I haven't made a maiden yet but the buid is complete & its lying in a thermocol box which i made for it :P.

since you have asked, here are some pics  :giggle:.

I have desoldered the Y connector & used an extra 10cm servo connector to make the wires for aileron. now i have seperate wires for both ailerons.


azhaguvel

Also i didn't had a tool to cut the Extra control rods so i just bended it in a L shape. You can see that i have replaced my ESC with a mystery 30 amps ESC.
Also see the turnigy meter reading almost near to middle throttle it shows 5 amps(middle is 7 amp) & at the full throttle it shows almost 16 amps.

azhaguvel

At this time in the night, the full throttle sounded like i am drilling somebody's home down  :giggle:. The amps measurments are taken after adding the prop.

ujjwaana

Nice setup. Use Tape Hinges as they are good. I can already see potential dager as on of the ESC battery lead has loos heat shrink on the XT60 side. Better you fix that.

Futaba 8FG Super | HK-450v2 | FA-22 Raptor |AXN Floater-Jet | FunJet | Black Horse Edge 540 | Amp Master 015 | 2.3M Big Brother

azhaguvel

mmm..keen observation :)... will fix that...
I dont have any fibre tapes with me(i have to get it from any LHS)...Any other tapes which will be available locally?.

ujjwaana

Just use some old hair dryer to shrink the tube. If you have one lying in house, all well, else head to nearest Salon. It would be better you spend some 200 bucks and get basic dryer.I would not recommend using Cigarette lighter/Match stick and sometime they make  the shrink brittle which may crack.

For Hinging, use good quality Clear Tape. If you can find, get the genuine 3M or Scotch brand. Its not good idea to use fiber tape as hey again put substantial binding.
Futaba 8FG Super | HK-450v2 | FA-22 Raptor |AXN Floater-Jet | FunJet | Black Horse Edge 540 | Amp Master 015 | 2.3M Big Brother