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Modified A-V-Spad

Started by girishsarwal, July 22, 2013, 10:49:33 PM

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girishsarwal

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:



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.
gs

rastsaurabh

I am getting jealous of you guys ........getting all the fun.....I am to go on business trip

shauviks

@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 ..... ??? ???
+91-8093863974
#Bring it on flyer

sanjayrai55

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

maahinberi

Wonderful flying! Will be there on Wednesday
Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

sanjayrai55

Get your 049 and maiden it!

sanjayrai55

Quote from: girishsarwal on July 22, 2013, 10:49:33 PM





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

girishsarwal

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?
gs

maahinberi

Sir, Cox is finally running ;D
Ready to be maidened tomorrow.
Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

sanjayrai55

Some great flying today Girish! Successful maiden, successful second flight  {:)} {:)}

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

girishsarwal

Sure sir, I am looking at the motor tonight.

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

maahinberi

You'll have to make your plane fiery before installing them though.
Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

sanjayrai55

Maahin: do you have the video of the flying of this?

maahinberi

Videos are currently uploading sir.
Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

sanjayrai55


maahinberi

Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

maahinberi

Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

sanjayrai55

Great! Cool morning's work :D

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

girishsarwal

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
gs

sanjayrai55

 ;D LoL! It will be easier to move it!

girishsarwal

#20
Reposting this post a little below ...posted out of order.
gs

girishsarwal

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
gs

girishsarwal

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
gs

girishsarwal

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...
gs

sanjayrai55

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!