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Old Oct 17, 2006, 11:49 PM
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Ljubljana Brnik, Slovenia
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Hey builders!
How is the progress of Guppy sailplane building?
Any news?
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Old Oct 18, 2006, 02:05 AM
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Krasnodar, RUSSIA
Joined Nov 2004
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I'm in pending of two sheets easy 6 mm balsa .
As soon as i receive them then i start to do a fuse.
Guys in LHS have broken a tool which they sawed balsa
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Old Oct 18, 2006, 09:24 AM
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well progress for me is fine, although a little slow at times. i need to post some pics on here.

i have completed the framework of the wings
the fuselage is mostly complete just requires the motor fitting and a couple of bits of shaping and then all i need to do is cover it

btw, i snapped my craft knife blade cutting 6mm balsa. it snapped not sideways but depth ways, pinged across my room lol.

im looking forward to flying it but i expect it will end up nose first in the ground somehow lol, i need flying help!!!!!

Anybody know of a light weight nicad pack 7.2v around 1100 - 2000mah??? i hear so much about lipo's being really light and efficient but i dont wanna fork out the extra cash. so im gonna stick with nicads for now.
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Old Oct 18, 2006, 12:47 PM
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Ljubljana Brnik, Slovenia
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@ Corkyo4

I use 8 cells of GP 1300 (Nimh battery pack)
It is nice balance between price and stored energy for the Guppy on 6V Speed cheap can brushed electric motor.

Mitja

P.S.: I am courious abot the pictures... show them plisssss
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Old Oct 18, 2006, 12:49 PM
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Ljubljana Brnik, Slovenia
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A friend of mine, just made some aditional work on his brushless powered Guppy with Hotliner wings!
His paint scheme looks awesome!!

Look that:







Cool! Isnt it?

Mitja
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Old Oct 18, 2006, 11:51 PM
No drugs to fly high
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Toronto, Canada
Joined Jan 2004
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Nice looking plane, and wow, just look at that landscape....LUCKY!!!!

What brushless, battery, prop did he use and how was performance?
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Old Oct 19, 2006, 11:19 PM
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Ljubljana Brnik, Slovenia
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Quote:
Originally Posted by oracle_9
Nice looking plane, and wow, just look at that landscape....LUCKY!!!!

What brushless, battery, prop did he use and how was performance?
His setup is as follows:
motor: ROXXY BL-outrunner 2824-34
speed controller: ROXXY BL-control 818 (6-10 NiXX ali 2-3 LiXX)
akku: INTELLECT 2/3 A 1200 mAh 8 cells
prop: aeronaut 9x7

With that setup, Guppy with hotliner wings, climb at about 40, and it can fly up to nine and a half minutes at full power!
That is a plenty time for couple of really high climbs.

Mitja
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Old Oct 23, 2006, 03:24 AM
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Just thought id attach some pictures of my building progress. Hope everyone likes them. Any comments or tips please let me know. Thanks
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Old Oct 24, 2006, 01:45 AM
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Krasnodar, RUSSIA
Joined Nov 2004
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Big progress as against me.
Not bad.
What weight at this time? This is 1.5 m WS?
Still have not sawn balsa for me and I am temporarily switched to other plane.
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Old Oct 27, 2006, 03:48 PM
kll
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Ankara,Turkey
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thank you for such good project! and thanks for your efforts. i downloaded documents, and probably i will be building this glider soon.
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Old Oct 27, 2006, 10:32 PM
No drugs to fly high
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Toronto, Canada
Joined Jan 2004
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Quote:
Originally Posted by kll
thank you for such good project! and thanks for your efforts. i downloaded documents, and probably i will be building this glider soon.

....as shall I too! Got the printed, wood, arrow, glue, my new brushless, reusing controller, 0.025" wire, and batteries. All I now need is covering film, screws, folding prop, and pushrod tubes (no clue where I will get these for a 0.025" wire)
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Old Oct 28, 2006, 03:50 AM
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Can anyone tell me the diameter at the base of the spinner on a folding 6x3 graupner prop. Only i have ordered one and it is taking a while to come through and is holding me up a little, so i thought if i have the diamter it would allow me to shape the nose to the write proportions.

cheers
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Old Oct 28, 2006, 11:20 AM
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Ljubljana Brnik, Slovenia
Joined Sep 2004
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Quote:
Originally Posted by corkyo4
Can anyone tell me the diameter at the base of the spinner on a folding 6x3 graupner prop. Only i have ordered one and it is taking a while to come through and is holding me up a little, so i thought if i have the diamter it would allow me to shape the nose to the write proportions.

cheers
It is the same as is drawn on the plans! 30 mm diameter.

Mitja
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Old Oct 30, 2006, 05:20 AM
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Bologna - Italy
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@corkyo4

Can you,please, explain how did the lamination of the bottom of the balsa pod?

thanks
Adso
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Old Oct 30, 2006, 09:27 AM
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Ljubljana Brnik, Slovenia
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Quote:
Originally Posted by ADSO
@corkyo4
Can you,please, explain how did the lamination of the bottom of the balsa pod?
thanks
Adso
It is quite easy, to make a laminated plank for the front fuselage bottom.

I take a piece of styrofoam (extruded is better) and cut in the shape of the bottom part of the fuselage.

Then I take 4 planks of 2 mm thick balsa. I "paint" planks with white carpenter glue (slightly thinned with water) put them together and clamp between styrofoam "mold"n until the glus dries.


Syrofoam "molds".
The black foam is here just to uniform the pressure to the planks when clamped together.


4 balsa planks



Balsa plankks glued and clamped between the syrofoam "mold".


When dry, and tailored to proper width, it looks like this!

Sides of the fuselage are not so curved, so for them there is no need to bend them prior final assembly of the fuselage.

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