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« on: July 22, 2013, 10:49:33 PM »
girishsarwal
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Did an avispad build recently, slightly modified from original plans, the wing areas is larger. No build pics Sad.

The maiden was a disaster. The second trial much better. Here it is:



Some kinks ironed out, some are left.

Changed the landing gear. The earlier one was from the cub I lost recently. The gear would squash on landing, and was giving away on high speeds, one can hear the prop hitting the ground, right after sanjay sir's nimboo mirchi chant Wink

The CG was out. Very nose heavy. Now fixed by swapping the position of the battery and the ESC + Rx.

Feels underpowered on takeoff, motor to be replaced.

Next trial this Wed. Will post the results.

Thanks Sanjay sir for the guidance throughout, and Sandeep Pande for shooting the difficult video, given the my tipsy takeoff.
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« Reply #1 on: July 22, 2013, 10:56:06 PM »
rastsaurabh
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I am getting jealous of you guys ........getting all the fun.....I am to go on business trip
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« Reply #2 on: July 23, 2013, 01:38:03 AM »
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#get_set_fly



@Girish Bhaiya that as one heck of a takeoff eve dangerous than mmy TT Ready's first takeoff   Giggle Giggle Giggle Giggle


 Hats Off Hats Off To the pilot for succesfullt cotrolling the takeoff  Clap Clap Clap


Way too uderpowered i guess and cg not balanced ..... Huh? Huh?
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« Reply #3 on: July 23, 2013, 08:06:53 AM »
sanjayrai55
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Girish, as I was there, I can unequivocally say that was some flying, looking at the way the model was behaving  Clap Clap

I think we have all the corrective actions on file now, just need to implement
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« Reply #4 on: July 23, 2013, 09:05:31 AM »
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Wonderful flying! Will be there on Wednesday
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« Reply #5 on: July 23, 2013, 09:31:01 AM »
sanjayrai55
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Get your 049 and maiden it!
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« Reply #6 on: July 23, 2013, 09:36:10 AM »
sanjayrai55
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The CG was out. Very nose heavy. Now fixed by swapping the position of the battery and the ESC + Rx.






At 1:09, you can hear Sandeep saying some balance problem....CG is out Cheesy
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« Reply #7 on: July 23, 2013, 05:44:57 PM »
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Thank you sanjay sir, shauvik and maheen. If I had to own up, I was sweating that moment Wink It's a spad but any loss would have been a loss.

Hope to have a better flight tomm. Thanks for the motor sanjay sir.

Maheen, I am looking forward to see you flying your cox. Did you start it with the new fuel?
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« Reply #8 on: July 23, 2013, 08:03:01 PM »
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Sir, Cox is finally running Grin
Ready to be maidened tomorrow.
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Maahin Beri - Introduction and Hangar
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« Reply #9 on: July 24, 2013, 09:58:49 AM »
sanjayrai55
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Some great flying today Girish! Successful maiden, successful second flight  Clap Clap

Now just upgrade that motor, and rock the skies Cheesy
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« Reply #10 on: July 24, 2013, 11:50:20 AM »
girishsarwal
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Sure sir, I am looking at the motor tonight.

Also, I now have the two fiery blaze stickers Wink...lol

fire.jpg
Re: Modified A-V-Spad
* fire.jpg (8.28 KB, 220x229 - viewed 644 times.)
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« Reply #11 on: July 24, 2013, 11:53:20 AM »
maahinberi
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You'll have to make your plane fiery before installing them though.
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« Reply #12 on: July 24, 2013, 12:07:06 PM »
sanjayrai55
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Maahin: do you have the video of the flying of this?
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« Reply #13 on: July 24, 2013, 12:18:54 PM »
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Videos are currently uploading sir.
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« Reply #14 on: July 24, 2013, 12:19:36 PM »
sanjayrai55
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Great! Thank you Maahin Cheesy
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« Reply #15 on: July 24, 2013, 01:45:32 PM »
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Maiden Flight:

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« Reply #16 on: July 24, 2013, 01:46:37 PM »
maahinberi
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Second Flight:

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« Reply #17 on: July 24, 2013, 02:24:38 PM »
sanjayrai55
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Great! Cool morning's work Cheesy

Observe: video 2 ends precisely where video 1 starts - next to that big stone on the runway Grin
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« Reply #18 on: July 24, 2013, 04:27:51 PM »
girishsarwal
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Thanks Maheen,

Sanjay sir, we should put a green klaxon on top of that stone. It will serve as our our go-no-go light
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« Reply #19 on: July 24, 2013, 07:39:52 PM »
sanjayrai55
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 Grin LoL! It will be easier to move it!
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« Reply #20 on: October 04, 2013, 11:32:35 AM »
girishsarwal
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Reposting this post a little below ...posted out of order.
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« Reply #21 on: October 04, 2013, 11:47:19 AM »
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So, the first incarnation of the A-V spad came down after about 12 successful flights. Was landing and went oblivious on the sticks...let the elevator spring back to neutral, about 8 feet above the ground, nosed dived, fuse broken, motor shaft broken

Redid the fuse...pics attached

20130909_223655.jpg
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« Reply #22 on: October 04, 2013, 11:48:12 AM »
girishsarwal
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Another photo of the fuse of A-V Redux

Redid the motor shaft from 4mm steel rod. Not hardened but worked great. Snug fit in the bearing, with a little lubrication moved very well.

However, motor was not being cooled properly and the bearings little noisy; Ignorance was bliss and the A-V took about 7 more flights

20130913_213558.jpg
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« Reply #23 on: October 04, 2013, 11:54:52 AM »
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The original 3530 motor gave way, probable bearing problem; overheated; dead with coils burnt. The A-V came down with the motor dangling in front but landed safely (on the landing strip Wink). It was a sight.

Motor now replaced with a 3536 size from RCB. Thanks Sanjay sir for the advise on the motor spec, and the idea for making a shaft out of die guide rods...

Incarnation 3 Maiden tommorow...

20131004_064142.jpg
Re: Modified A-V-Spad
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« Reply #24 on: October 05, 2013, 11:19:39 AM »
sanjayrai55
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Talking of die guide rods, can harden them. Use a butane flame, red heat, and throw into oil. Should get about 45 Rc on it. If done properly, to 850 deg C, and proper cooling done, can get 55 Rc!
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