Sky Surfer From RC Bazaar, Build and Fly Log

Started by rcpilotacro, February 19, 2012, 04:39:26 PM

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aviator

Didn't get how to do it???
Can someone pls explain

SunLikeStar

Its pretty straight forward, there is a hook on each wing and a rubber band on the hooks keep the wings pulled together.

aviator


SunLikeStar

Balsa pieces form hook for the rubber band.

aviator

Got it...
Just a small thing.. wat is the dowel on the fuselage for...
The balsa pieces are to be glued to each wing and joined together using rubber bands...Got it!
Should the rubber bands be mounted through the fuselage mounting dowel!

SunLikeStar

The dowel is just to hold the rubber band while you are mounting the wing. What you do is first you put the rubber band on the dowel through the wing saddle, the rubber band now stretches from dowel on one side to other. Now you mount your wings and move the rubber band from the dowel to the wing-hook, one side at a time. You see its just to make the process simpler, other wise you'll have to fish the rubber band through the wing saddle after you mount one wing :)

aviator


aviator

Any ideas where i can get solid carbon fibre rod for skysurfer.
The original rod gave away pretty soon... :(

SunLikeStar


rcpilotacro

see my basic aerodynamics thread, conventional thrust drag line is a nose up couple, ( http://www.rcindia.org/rc-general-topics/basic-aerodynamics-for-rc-flying/msg58078/#msg58078 ) whereas Sky Surfer/easy star/easy star II/ Shikra like aeroplane which has high mounted engine has a reversed thrust drag couple, i.e on opening power they will go nose down, at take off this couple could be more than what elevator can handle owing to low forward speed, at launch , therefore power should be just enough for launch and slowly open power, if you launch with full power she might slam the ground.
Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

vishalrao

#35

Now I understand why my EasyStar 2 pitches down when full-throttle is opened. However, this was not the case in Sky Surfer. Could it be because the motor in Sky Surfer was not powerful enough or the propeller was not big enough. In Easy Star, the propeller is 7x6 whereas in Sky Surfer it's 5x5.

rcpilotacro

Quote from: vishalrao on April 20, 2012, 11:38:28 AM
Now I understand why my EasyStar 2 pitches down when full-throttle is opened. However, this was not the case in Sky Surfer.

If you notice engine pod to boom distance of a Easy Star II is more which means, for a given thrust and drag he couple of nose down force will be more. bottom line is toss should be at power just enough or slightly less at the time of toss, slowly increasing power as the speed increases
Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

vishalrao

#37

Thank you Augustine sir!

Is it a short coming of Easy Star II or does it have any benefits?

vishalrao

#38
Quote from: Prady on February 26, 2012, 05:15:25 PM
The wings of the aircraft dont lock well and come off.

Here's what I had done to secure the wings... In addition, as extra precaution, I also used to tape each wing to the fuselage using a piece of fiber glass tape. Why take risk? That way, I never encountered any episode of wing coming of in the flight.

rcpilotacro

Quote from: vishalrao on April 20, 2012, 03:57:07 PM

..does it have any benefits?

You could put a longer prop without hitting the boom 6in prop in easy star I clears the boom by cats whiskers. easystar II i heard takes a 7" prop
Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

freeflyer

Does any 1 has a spare prop of sky surfer as i happened to break it today and rcbazaar doesn't have the spare props available with them anymore .Checked in some LHS but i guess none of them stock 5x5 prop
Planes: Sky Surfer| Jpower Cessna182 | Seagull Boomerang
Radio : Futaba 7C

RcBazaar

hi chintu.. if you could wait for another week or so as we expect the customs to clear our shipment by this time ......................... hopefully

regards
sujju

AEROVISHWA

Quote from: Chintu234 on June 03, 2012, 08:58:37 PM
i happened to break it today

break a 5X5 pusher prop....?? on a plane  like skysurfer...?? please tell us  how did u manage to do that ..??


just curious,  was it a crash or manhandled...??
or may be  on some other plane..  :thumbsup:

:thumbsup:
Aerodynamics are for people who can't build engines.
-Enzo Ferrari

https://sites.google.com/site/vishveshkakkeri93/
HAPPY LANDINGS

akky

Arcarious @ Akky.....
I have never crashed while flying....Its the Landing only that gets me....
Happy Landings....&.....Happy Crashings

freeflyer


Well vishwa its strange but true while taking of my sky surfer the canopy came out all of a sudden( the reason might be overstuffing of the fueslage) hitting the propeller and breaking it.I guess everyday is a new learning experience in Rcfield learnt now to keep spare props even for a pusher plane
Planes: Sky Surfer| Jpower Cessna182 | Seagull Boomerang
Radio : Futaba 7C

rcpilotacro

akky & Chintu
you cant and shouldn't put 6x4 prop with the stock motor for a 3S lipo
Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

sushil_anand

Quote from: rcpilotacro on April 20, 2012, 06:41:01 AM
see my basic aerodynamics thread, conventional thrust drag line is a nose up couple, ( http://www.rcindia.org/rc-general-topics/basic-aerodynamics-for-rc-flying/msg58078/#msg58078 ) whereas Sky Surfer/easy star/easy star II/ Shikra like aeroplane which has high mounted engine has a reversed thrust drag couple, i.e on opening power they will go nose down, at take off this couple could be more than what elevator can handle owing to low forward speed, at launch , therefore power should be just enough for launch and slowly open power, if you launch with full power she might slam the ground.

Wouldn't a slight change in thrustline help?
Hangar: Zlin 50L -120, CMPro Super Chipmunk, Ultimate Bipe EP, Imagine 50, Christen Eagle 160, Ultra Stick, Super Sports Senior

rcpilotacro

theoretically it will compensate only for one throttle setting, above and below that there will pitch variation. in fact when flying these aeroplanes, it is clearly noticeable, the moment you cut throttle she attains a nose down attitude and two jabs of up trim is required
Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can't get it wrong.

freeflyer

Quote from: freeflyer on June 03, 2012, 08:58:37 PM
Does any 1 has a spare prop of sky surfer as i happened to break it today and rcbazaar doesn't have the spare props available with them anymore .Checked in some LHS but i guess none of them stock 5x5 prop
I happened to receive PM from RCDhamaka for availability of the required 5 x 5 prop with them and they were quite quick to send me 1 immediately, again hats off to Rcdhamaka for showing such promptness and not making my flying suffer
Planes: Sky Surfer| Jpower Cessna182 | Seagull Boomerang
Radio : Futaba 7C

karandex

can you please explain how did you know expo rates etc, are those supposed to be 3 sets of settings?