Funcraft Acro Bipe - Page 8 - RC Groups
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Dec 13, 2005, 10:44 AM
Registered User
Janusz Jawien's Avatar
Hi Echo,
Nice conversion!
For others - it is better to cut front oppening as close to strouts as possible to get a good access to the battery. My aileron servo is very close to the wing spar - the mounting piece of it is inbedded under the spar - moving this servo forward gives you better access to the middle section of the fuse facilating the way to go with the battery this way etc.
Monkey, the Echo's plane was rubber powered - the little hole in the bottom is for rubber change. You can hold the cowl piece by rubberband or just piece of tape but the more elegant and easy way is to glue into the styro small magnets - you can get them in Radio Shack.
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Dec 13, 2005, 11:03 AM
Registered User
echoplanar's Avatar
Thanks guys-it is an easy plane to convert and flies well if kept light.

Agree it would be better to cut further back into the front turtle deck for battery access. If I had another I would do it that way. I widened out the bottom hole and use that for the battery-the 250 packs fit perfectly there and are held with a little bit of velcro. It also balances well with the battery at that location.

The balsa in the nose basically holds the motor in place-once the top is put on and secured on the sides with tape the motor is actually pretty snug. I kind of sanded and whittled the balsa shims until I got the motor in the right position. I also use a small piece of tape over the top of the motor to keep it in place.

Dec 14, 2005, 08:17 PM
Clear for Take-Off!!!
Hey echo,

How bout a flight report? Im curious on how it fly's on the weight you have. Janusz stated that the extra weight helped it in the wind. I can't wait to maden mine.

Happy Flying!!!
Dec 25, 2005, 12:08 PM
Clear for Take-Off!!!
Attempt #1,

What goes up, must come down.
What goes up, must come down.
What goes up, must come down.
What goes up and must come down and may come down hard. I have a little repairing to do but Im happy with the flight or lack of flight so far. The little gearbox just does not have the power to keep the bipe aloft. Last night I installed the IPS50 back in and did a few other repairs as well. So, as soon as it stops raining, yes I said rain I will make another attempt. I also found out that the depron material Im using for ailerons has a very shiny finish and tape will not stick to it. Im going to change this too. Pretty neat little plane though, Im still happy with it. it looks really neat in the air, well the little time it was in the air.

Merry Christmas everyone!!!
Dec 25, 2005, 02:20 PM
Monkey Do
MonkeySee's Avatar
I did the rare Earth magnets on my hatch the other night and those things are amazing!! Very stong for such a little magnet. And they were less than $2.00 for the Pr. I had to get 6 Pr for other planes. There's got to be more uses for these things.

My bipe is ready to fly and I'm waiting for a calm day or someone to let me fly in their hanger. I'll report on my maiden then it happens.


PS While at Harbor Freight yesterday I picked up a little FF hang glider. This will be my next RC conversion. Can't wait to get it home.
Dec 25, 2005, 03:08 PM
Clear for Take-Off!!!
Hey Monkey,

Let us know how the maiden go's. Im also waiting for a break in the weather. Seems whenever the weather is nice, my planes are not ready to fly, and when they are, the weather is bad. Oh well, that's Michigan for ya.
Dec 25, 2005, 04:26 PM
Gravity is a harsh mistress.
Tim Wolff's Avatar
Hey no wind today, just some rain. I've been "trimming" the aero aces that the kids got for Christmas. They are foam so why not. It isn't going to warp if it get a little wet.
Dec 25, 2005, 11:12 PM
Registered User
Tim do you want to fly your bipe out doors?
I have built a Harbor Freight bipe with a diy brushless motor and fullhouse radio.
she came in at 4.4 OZ. The wing is depron 3mm copy of top wing , top and bottom
with 1/2" wide alerons on top and bottom. she flys awesome!
powered by 2 cell 350hd lipos
still don't know how to post pics
Dec 26, 2005, 09:11 AM
Gravity is a harsh mistress.
Tim Wolff's Avatar
I fly the Harbor Freight Bipe outdoors all the time, but as a free flight model. The airframe is a bit heavy for my tastes as an RC model.
Dec 26, 2005, 11:06 AM
Clear for Take-Off!!!

How long do you charge the battery's for free flight? I've heard of many people losing their bipes on a full charge.
Dec 26, 2005, 11:25 AM
Gravity is a harsh mistress.
Tim Wolff's Avatar
Less than a miniute or so. Enough for 5 or 6 circles. Charged it longer a few times on fresh batteries and it started heading west, circled over a two story house a couple of times and landed near the pool of the house next door. A neighberhood block away. We were more careful after that. The Bipes fly good free flight. The other one with the tail boom and two rudders is a yard dart.
Dec 28, 2005, 10:17 AM
Clear for Take-Off!!!
I woke this morning to overcast sky's and mild temps in the upper 30's with a slight waffle of a breeze. I got a cup of coffee and decided to take the HF Bipe out for a maiden flight. I tried ROG but ground looped everytime so I decided to hand launch. It flew straight out of my hand and headed straight for the sky. I adjusted pitch attitude accordingly and began a nice gentle left turn. I input some right trim into the ailerons and the bipe was flying smooth.
I had a very small batt. pack so flight time was all of a minute. Am I happy with how it flew? YOU BET I AM!!! This little bipe is going to be the plane I grab for first when I go flying. Slow speed flight was very good with a slight decrease in control. It looks really neat in the air. Im planning on more flights as the day progresses.

Hmmmmm, maybe a fullhouse HF Bipe is in order next!
Dec 28, 2005, 10:43 AM
Registered User
Congratulations! Happy to hear it went so well.

I have done ROG takeoffs exactly ONCE with these planes! I have ailerons and no rudder on mine, so I had to head into a stiff headwind.
Dec 28, 2005, 10:47 AM
Registered User
Janusz Jawien's Avatar
Congrads Manish !
You did it, man! Now get those 2cell 340 Kokam and have fun!
IMHO fullhouse - rudder will not change too much. I saw somewhere in early post very clever way somebody couple ailerons servo arm with rudder using carbon stick.
Personally I have no experience with rudder on Acro. As you stated before - you live in windy area - to have fun set it up with Feigao, 10CC, 730 2 cell Thunderpower - you will not regret it! I promise!
Dec 28, 2005, 11:56 AM
Registered User
Matt D.'s Avatar
I too have had a very hard time doing takeoffs and landings. I think it is because the plane is so short (not sure of the technical word). What if you put a tailwheel extended past the rudder with a longer wire so that it increases the plane's length? Does anybody think that will work?

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