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Electric J3 Cub Build

Started by msri21, December 01, 2011, 10:47:04 PM

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PiyushI

#25
Quote from: msri21 on December 04, 2011, 12:23:14 AM
... two pieces on either end of thermo.  using hot wire foam cutter drawn along the aerofoil. Slightly sanded over for finishing
exactly, the method was same, tool was differ :o. i didn't yet used hot wire cutter. I will try to find how to get that tool.


Quote from: RajivReddy on December 04, 2011, 08:30:27 AM
...one you already have
@msri not everyone has access to a hotwire cutter
you are right, Rajiv.

:help: CAN anybody show how to prepare hotwire cutter or from where it can be purchased?
Lift-Drag-Weight-Thrust are my friends.

RajivReddy

you can see how to make the hotwire foam cutter here:-
http://www.instructables.com/id/Hot-wire-foam-cutter/
more than 1000 :Rs: !!! :o

PiyushI

Lift-Drag-Weight-Thrust are my friends.

msri21

Did the maiden today, model was heavy and under powered. Hence planning to change the power system. And reduce some weight on coro side. She had a short fligh and nose dived. Feel every thing is fine except power. Will do that this week.
@PiyushI: hot wire cutter is very simple to make search in the forum. Already threads are available. I myself made using that information.

PiyushI

Lift-Drag-Weight-Thrust are my friends.

Mooni

#30
Quote from: msri21 on December 01, 2011, 10:47:04 PM
Targeted weight was 550g, now i feel it heavier than i planned. i may have to reduce some weight on fuse (Coro). Suggestion for reducing the model weight is appreciated
try making the fuselage with 1 cm styro sheets cut with the help of hot wire cutter. Use coro to give strength to the landing gear, wing attachment and motor mount area.
gliding is the purest form of flying....

sbajare

hi,

here is my piper J3. made from 3mm coro. All up wt is around 2.8kgs.

flys with a 5s lipo and a 650kv motor turning a 12x6 prop.



Sandeep Bajare
Ph - 9175342600

PankajC

@sbajare.. what are the dimensions? Looks fab
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