Gee Bee balsa and fiberglass from rcb!!

Started by subhashjk0508, December 20, 2014, 12:52:31 PM

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subhashjk0508

This is the kit version of the iconic gee bee made out of balsa and fiberglass from rcbazaar.com!! comes as a kit with some working to do!! was lying around for a few months now. so thought ill get this baby flying and more over i found a good test pillot(look at pic below)  ;) !!

subhashjk0508

#1
pics.

subhashjk0508

planning to use a 3536-1100kv motor with a 11x7 prop!!

sanjayrai55

That may just be a little too much prop for that motor! What are the model full specifications?

subhashjk0508

#4
it was already used by a fellow flyer, so thought i'd go with the same but your suggestions would be great sir.

Specification
● Material: Fiberglass fuselage and balsa wings
● Wingspan: 1036mm
● Length: 623mm
● Wing Area: 21dm sq.
● Height: 250mm
● Airfoil: NACA 2416
● Weight: 1200g (with electronics)

sanjayrai55

Hmm. That motor should be OK, but you will get a lot of RPM drop and low battery times with the 11*7 prop

Maybe a 10*7

sanjayrai55

If you want more thrust you could with a 11&5.5 prop, which would make the model fly slower. In my little experience, the Gee Bee needs to fly fast or it will stall. So use a 3536-1250 KV with either a 10*7 prop for very sporty flying, or 11*5.5 for more leisurely flying. BTW I hope your flying skills are good - that is not an easy model to fly!

subhashjk0508

since i already have a 3536 1500kv motor i'm going with that sir, and i hope it puts my flying skills to the test!! will maiden this week!!

edit- sir i wanted to know how would 11x3.8 do??

regards,
JK

sanjayrai55

A 3536-1500 with a 10*7 draws over 60 A at WOT. With that weight, use a 10" dia prop. Higher dia means very much higher current draw. Use a 60 A ESC. Re.: the pitch, 3.8 is less. Go for at least 6; ie a 10*6 or 10*7.

This is my prediction. However the best is to hook up a wattmeter and actually see what's happening on load. There will be a voltage drop and you can also see the current draw. If you have a Tachometer - perfect! You can check the RPM too.

subhashjk0508

this might sound stupid, but how would a 3511-750kv motor do sir??

regards,
JK

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

I would suggest using the 3536-1100kv motor with a 10x7 prop. (Should give you decent flight times)
Or using the 3536-1500kv motor with the setup suggested by Sanjay Sir with a 10x6 (Flight time would be low)
Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

subhashjk0508

sir, im fine with using anything from 1500-6600mah 3s battery!!

sanjayrai55

You might be fine, but will the model be?  :giggle: :giggle:

With that small wingspan do not increase the weight

subhashjk0508


sanjayrai55

The 1500 KV motor will give you 3-4 minutes

sanjayrai55

And it should be at least a 30 C or else it will swell and get ruined very fast

subhashjk0508

35c rating sir, and flight time is worse than my 55mm edf!!

maahinberi

You should get around 6 minutes with the 3536-1100kv motor
Maahin Beri - Introduction and Hangar
Seagull Arising Star, Seagull Low Wing 40, AviSport (SPAD), Phoenix Scanner, VortexRC Speedster, Martian 220 Racing Quadcopter.

sooraj.palakkad

RC Hobbyist and an Aerial Cinematographer..

subhashjk0508

yup!! not the one you used, i have few zippy too!!

sooraj.palakkad

Yup!, no probs, just asked !!

Also your Testpilot looks great :thumbsup:
RC Hobbyist and an Aerial Cinematographer..