Put the first flights on my BiSide today and I could not be happier. I had some minor motor/ESC issues, but the airplane is incredible. Took off and I haven't touched the trims. At all. They're all dead center from where I setup the airplane. Now, that's just basic 1G flight trim, and I haven't had time to work on anything yet, but it speaks to how straight the airframe is from BJ.

I tried some pretty basic stuff at relatively low speed and was quite happy with the results. Snaps are CRAZY good, as are pretty much any rolling maneuvers. Others here have said how quickly they felt 'at home' with the airplane, and I have to agree 100%. I felt right at ease with it, and flew a few maneuvers from P15 without issue. Rolling circles are really nice too. My CG needs to move forward a bit (at 135mm right now), but I was mostly just flying these flights to make sure nothing broke, and to break-in my new batteries.

Oh.. RTF is 4780g with Hobby People 4500mah packs, and an 800mah Rx pack.

Does this mean we'll actually get to see you at a contest or two next year?

>> I tried some pretty basic stuff at relatively low speed and was quite happy with the results. Snaps are CRAZY good, as are pretty much any rolling maneuvers. Others here have said how quickly they felt 'at home' with the airplane, and I have to agree 100%. I felt right at ease with it, and flew a few maneuvers from P15 without issue. Rolling circles are really nice too. My CG needs to move forward a bit (at 135mm right now), but I was mostly just flying these flights to make sure nothing broke, and to break-in my new batteries. <<

Does this mean we'll actually get to see you at a contest or two next year?

That's the plan, yes.

3 more flights this morning. I still need to move the CG further forward, but I'm starting to get the control throws where I want them and have started playing around with basic trimming. I'm still taking it easy on the new batteries, but I clearly have plenty of power with the Shulman Fury motor turning the APC 21x13.5 and speed feels really controllable. The standout behavior so far is in rolling maneuvers as they're effortless (and nothing looks better in rolls than a biplane), but the airplane feels very solid and locked in even flying at very slow speeds. Not quite as slowly as Mayr flies his Trigantic of course, but I don't think anyone flies like him.

Hi Doug,

do you have a picture of the position of the 10s pack ? So you are using the heavy APC prop with about 100 g; if using the very light Falcon 21x13,5 the 10s pack needs to be more forward.

I am planing to modify the battery plywood tray. So I will make it longer to have more possibility of moving the 10s pack.


Regards

PW

The tray will definitely need to be extended if you're running servos heavier than 55grams. Mine sits with the rear edge of the tray in line with the triangle stock, and my batteries still hang off the front edge of the tray by about 3cm.

On a different note, I smoked my motor or ESC today. I doubt it's the motor's fault as Castle ESCs have a known problem with 28 pole motors, which I didn't know about until very recently. Ordered a Q80-14XS and a Mezon controller to replace it.

That said, the Shulman Aviation Fury motor was MORE than enough power for the BiSide that's for sure. I'm going to move that motor over to the new project when I get it back from Jason.

Hey guys, for any of you interested, I have had some really nice mounts manufactured out of G10 that will work perfectly in any of the BJ Craft planes and probably several other models. This mount fits the Plettenberg Advance 30-10 All you need to do is sand the outer diameter to fit and glue it in. If interested I have them available at 35.00 bucks a piece

I have a template for the Pletty/Himax outrunners now if anyone should need it.

I'm looking for a firewall template for a rear mounted Pletty outrunner in the BiSide.
Anybody set one up like that yet?
Thanks,
Dan

That maybe a tough undertaking with the small amount of room you have to work with in the nose area?

BH

My Fury is rear mounted.. You just have to open the nose ring a little to get the motor in/out from the front.

Maiden flight was done last sunday, weight 4609 grs with batteries.

my configuration is a hacker C50 14XL, castle ESC, 4 ailerons servo 3421, rudder servo 8411, stab servo 8711, zippy compact batteries, falcon prop and spinner.

my radio is a JR 9303, and i programed the four servo, and worked well.

thanks to everybody of you, for your info, i really used it, and to my partner Marcelo Velez who finish the building of the BISIDE.

@checho4 I am the guy who has posted the solution for a bipe on a 9303 and 9305 in the Miss Wind 50 topic. What has been explained here before is programming with a 7 channel receiver, but there is a different, better way with 8 or 9 channel receiver. The trick is that the radio recognizes to which type of a receiver it is being paired with and therefore adds certain programming features. Amazingly there is not even a single word about these features in the manual!

I am in the process of selling my Sickle and BiSide was very high on my list, but honestly speaking I will wait for some version 2. I am great fan of bipes and will definitively own one soon. It looks like that the future is with bipes, I have recently checked on the new Oxai web site and there are 2 more new bipes announced, HyBird and Acuracy, very nice!

So here is the programming solution, the biggest difference is that all 4 ailerons can be trimmed via the AUX trim. I have also explained all the other mixes needed for the Miss Wind 50.

JR 9303&9305 with 8 or 9-channel receiver bipe programming
The mix RTRM-FROL is active if you mate flap with AUX3. Now you can trim all 4 ailerons via aux trim switch, where down is right and up is left. The aile trim remains active and will still trim only 1 pair of ailerons.
Ch. 1 Throttle
Ch. 2 Right Aileron
Ch. 3 Elevator
Ch. 4 Rudder
Ch. 5 Left Aileron (Gear)
Ch. 6 Right Flap (Aux 1)
Ch. 8 Left Flap (Aux 3)
Model type ACRO. In the device selection I have set flaps trim to OFF and in the OUT line all channels to INH.
Wing type is set to NORMAL, and in the dual section I have mated AILE with GEAR and FLAP with AUX3, trim is set to ACT.
Prog Mix 3: AILE->FROL and under Pos0 set both values to +100%
Prog Mix 4: RTRM->AILE and under Pos0 set both values to +25%
Prog Mix 5: RUDD->AILE, Seba suggests +2% and -2% for both
Prog Mix 6: RUDD->FROL should be identical to previous mix
Prog Mix 1: RUDD->ELEV, Seba suggests +4% for both
Prog Mix 2: THRO->ELEV, Seba suggests 2-3mm down


Velco

You can spend your whole life waiting for what's next. The BiSide is a GREAT airplane. You really can't go wrong with ANY of BJ Craft's airplanes though.

Hi,

I am nearly 90 % ready; but no hurry, because in germany we are getting winter time and so no flying.

It seems that the 5 kg FAI limit is no problem with the Biside; so I am thinking using the new Jeti central box with the Jeti DC-16 and "2 Way modus" in combination with the Mezon 95 controller and Hacker Q80/Falcon 21x13,5.

http://www.hacker-motor-shop.com/e-v...80&c=882&p=882

So with Central Box 100 and 2 Rsats RX and "2 Way Modus" (Jeti TX has 2 HF moduls) we have two indepened working systems, so more security. This combination is about 35 g heavier than working with only one RX.



Regards

PW

Regarding the rudder control horn:
- Is there a pre-cut slot and/or template for locating?
- Which horn should I use: 15mm or 20mm?
- 4 hinges for the rudder?

Thanks

Hi,

corresponding rudder look here from BJ manuel

................

Rudder

Directly use 1 servo.
The length of servo horn is 20mm, that of Rudder horn is 15mm-20mm
Servo used for test plane is 6.6 volt, 13 kg in torque and 0.17/sec in speed.
I felt that capacity of servo is proper.
As the rudder is larger than other pattern planes, torque of servo should be larger, the throw of
rudder should be the largest as long as it doesn't touch to stab when servo moves 140%.
Torque of servo for test plane has no room, servo capacity for Bi Side is recommended 15kg in torque,
0.19/sec in speed, if 0.15/sec in speed, 20kg in torque is needed.


......................................

Regards

PW

Hi Dan
the rudder horn slot is not precut. The area which you will install the horn is a balsa block so you cut a slot and glue it in. Just install your servo with arm length noted in the post from Peter. Then locate the horn position based on a straight pushrod from the rudder servo horn.

Yesterday i did more 4 flights, trying to get the plane more trimmed,working on the mixes, for the knife edges.

i have a question, anybody if you are having problems with the refrigreration of the motor?, my C 50 is landing too hot, and i am not doing more than 6 minutes flight with no high power... Any advice? I am using the falcon spinner that will help to it.


thanks,


best regards.

You may want to add a deflector to force air at the motor.

Hi,
You might have too much prop for the motor/bipe combo.
Or
Does the motor need attention - don't use that motor but as I understand it there is something that can slip and the amps/temp goes way up.

Brian

One question, what did you guys use for linkage on the rudder?

I used the provided linkage. Ball link on one end, z-bend on the other.

Control throw suggestions please? (maybe I missed it in this thread, but can't find any now)
Thanks, Dan

Start with the usual, 10-12 on ailerons and maybe 8-10 on elevator/stab. Surprisingly, it uses similar throws to a normal elevator setup. Maybe a little less, but not a lot less. That will get you started, then adjust to taste from there.

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