RC India

RC Models => Electric Planes => Topic started by: girishsarwal on July 22, 2013, 10:49:33 PM



Title: Modified A-V-Spad
Post by: girishsarwal on July 22, 2013, 10:49:33 PM
Did an avispad build recently, slightly modified from original plans, the wing areas is larger. No build pics :(.

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

http://www.youtube.com/watch?v=ySuB5OfD9qs

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 ;)

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.


Title: Re: Modified A-V-Spad
Post by: rastsaurabh on July 22, 2013, 10:56:06 PM
I am getting jealous of you guys ........getting all the fun.....I am to go on business trip


Title: Re: Modified A-V-Spad
Post by: shauviks on July 23, 2013, 01:38:03 AM
@Girish Bhaiya that as one heck of a takeoff eve dangerous than mmy TT Ready's first takeoff   :giggle: :giggle: :giggle: :giggle:


 :hatsoff: :hatsoff: To the pilot for succesfullt cotrolling the takeoff  {:)} {:)} {:)}


Way too uderpowered i guess and cg not balanced ..... ??? ???


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 23, 2013, 08:06:53 AM
Girish, as I was there, I can unequivocally say that was some flying, looking at the way the model was behaving  {:)} {:)}

I think we have all the corrective actions on file now, just need to implement


Title: Re: Modified A-V-Spad
Post by: maahinberi on July 23, 2013, 09:05:31 AM
Wonderful flying! Will be there on Wednesday


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 23, 2013, 09:31:01 AM
Get your 049 and maiden it!


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 23, 2013, 09:36:10 AM





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 :D


Title: Re: Modified A-V-Spad
Post by: girishsarwal on July 23, 2013, 05:44:57 PM
Thank you sanjay sir, shauvik and maheen. If I had to own up, I was sweating that moment ;) 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?


Title: Re: Modified A-V-Spad
Post by: maahinberi on July 23, 2013, 08:03:01 PM
Sir, Cox is finally running ;D
Ready to be maidened tomorrow.


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 24, 2013, 09:58:49 AM
Some great flying today Girish! Successful maiden, successful second flight  {:)} {:)}

Now just upgrade that motor, and rock the skies :D


Title: Re: Modified A-V-Spad
Post by: girishsarwal on July 24, 2013, 11:50:20 AM
Sure sir, I am looking at the motor tonight.

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


Title: Re: Modified A-V-Spad
Post by: maahinberi on July 24, 2013, 11:53:20 AM
You'll have to make your plane fiery before installing them though.


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 24, 2013, 12:07:06 PM
Maahin: do you have the video of the flying of this?


Title: Re: Modified A-V-Spad
Post by: maahinberi on July 24, 2013, 12:18:54 PM
Videos are currently uploading sir.


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 24, 2013, 12:19:36 PM
Great! Thank you Maahin :D


Title: Re: Modified A-V-Spad
Post by: maahinberi on July 24, 2013, 01:45:32 PM
Maiden Flight:

http://www.youtube.com/watch?v=nTl-CSAPXlo


Title: Re: Modified A-V-Spad
Post by: maahinberi on July 24, 2013, 01:46:37 PM
Second Flight:

http://www.youtube.com/watch?v=F5dppHEpWUw


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 24, 2013, 02:24:38 PM
Great! Cool morning's work :D

Observe: video 2 ends precisely where video 1 starts - next to that big stone on the runway ;D


Title: Re: Modified A-V-Spad
Post by: girishsarwal on July 24, 2013, 04:27:51 PM
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


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on July 24, 2013, 07:39:52 PM
 ;D LoL! It will be easier to move it!


Title: Re: Modified A-V-Spad
Post by: girishsarwal on October 04, 2013, 11:32:35 AM
Reposting this post a little below ...posted out of order.


Title: Re: Modified A-V-Spad
Post by: girishsarwal on October 04, 2013, 11:47:19 AM
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


Title: Re: Modified A-V-Spad
Post by: girishsarwal on October 04, 2013, 11:48:12 AM
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


Title: Re: Modified A-V-Spad
Post by: girishsarwal on October 04, 2013, 11:54:52 AM
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 ;)). 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...


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on October 05, 2013, 11:19:39 AM
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!


Title: Re: Modified A-V-Spad
Post by: girishsarwal on October 16, 2013, 06:27:56 PM
AV Spad flying on a 3536 motor. Arvind tossing it around ;)

http://www.youtube.com/watch?v=KDkJ-XPuE_M


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on October 16, 2013, 06:41:52 PM
Great fun. BTW you mentioned ESC about 10 times in the video :rofl:


Title: Re: Modified A-V-Spad
Post by: girishsarwal on October 16, 2013, 08:28:28 PM
Hahaha...you 'felt' my cloaked agony


Title: Re: Modified A-V-Spad
Post by: girishsarwal on December 05, 2013, 11:47:33 AM
The A-V Spad has been serving good. Over 70 flights successfully done.

Last flight and due to distractions, the wing bolts weren't tightened. the wing came off right after take off, and it hit the ground like a missile. Firewall was safe so was motor...Corro gave way to the shock...

Fuse repaired since then, much stronger and a DVR mounted :D

So here's technically my first FPV video...Camera feed will be linked to the gt-jtx very soon.

http://www.youtube.com/watch?v=wcdOMVCXrJs


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on December 05, 2013, 12:07:28 PM
"Fly way...in this perfect weather"   :thumbsup: :thumbsup:

The ground looks quite nice from above.....except for the trucks  ;) ;)

Noticed another field too - behind


Title: Re: Modified A-V-Spad
Post by: maahinberi on December 05, 2013, 12:40:14 PM
Is some mela coming up? Or is that dome like thing a permanent construction  ???


Title: Re: Modified A-V-Spad
Post by: girishsarwal on December 05, 2013, 12:44:00 PM
temporary. Will be off by the time you're in ggn ;)


Title: Re: Modified A-V-Spad
Post by: maahinberi on December 05, 2013, 12:47:32 PM
Ah, cool. Can't wait to maiden (finally!!) the stick


Title: Re: Modified A-V-Spad
Post by: girishsarwal on December 05, 2013, 08:22:15 PM
Sanjay sir,
That's where the Jap guy flies his glider. I've asked him to join us this weekend...


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on December 05, 2013, 08:26:06 PM
 :thumbsup: :thumbsup:


Title: Re: Modified A-V-Spad
Post by: iwincar on December 06, 2013, 05:00:09 PM
Girish spec please, motor bat,prop,


Title: Re: Modified A-V-Spad
Post by: girishsarwal on December 07, 2013, 05:45:44 PM
Iwincar

3536 motor1500 kv from rcb
10 x 7 ep prop
2200.mah
50a esc
48 inch wingspan
auw ~1.3 kg


Basis the Avisapd from Bex...


Title: Re: Modified A-V-Spad
Post by: rcrcnitesh on December 08, 2013, 07:30:56 PM
very overpowered I think.


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on December 08, 2013, 08:19:14 PM
Young man, your thoughts are irrelevant and irrational. This is no more a trainer, but a sport model


Title: Re: Modified A-V-Spad
Post by: girishsarwal on January 09, 2014, 12:58:08 PM
The A-V has been serving well and flew it yesterday afternoon...too many kites and partly irresponsible on my end, dangerous for the birds, but then, I'm a non-vegetarian...

http://www.youtube.com/watch?v=Zbod6mQk4D4#ws (http://www.youtube.com/watch?v=Zbod6mQk4D4#ws)


Title: Re: Modified A-V-Spad
Post by: girishsarwal on January 09, 2014, 01:05:36 PM
fuse broke on second landing...so now there's a box on top of a box on top of a boxed fuse...

Flew this morning again...


Title: Re: Modified A-V-Spad
Post by: sanjayrai55 on January 09, 2014, 02:50:33 PM
You kept attacking "The Tree"  :o :o     ;D


Title: Re: Modified A-V-Spad
Post by: girishsarwal on January 09, 2014, 05:33:22 PM
parts of me are herbivorous as well ;)...One fine day sire..."The Tree" will be "The Tree That Was"


Title: Re: Modified A-V-Spad
Post by: tushar112 on January 10, 2014, 12:05:20 AM
"The Tree" will be "The Tree That Was"   :giggle: :giggle: