3D Fan Fold 3DX, Ultimate Bipe and Yak54...V13 - RC Groups
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Jun 13, 2004, 11:25 AM
Wow...you shocked it too...they lookg good. How does it fly compared to the std. plane..?

Ha Tim...Part 13...you da man...!!

Jun 13, 2004, 11:41 AM
Registered User
ldammann's Avatar
Haven't flown it yet. I have never built a plane with the CF tube. I always shock them so I can't compare. I have found that if you run the fuse all the way back and put the horizontal stabilizer on top, the tail is a lot stiffer.
Jun 13, 2004, 01:13 PM
I fly, therefore...
dsBeliever's Avatar
Last edited by dsBeliever; Jun 13, 2004 at 06:50 PM. Reason: Double post
Jun 13, 2004, 01:15 PM
I fly, therefore...
dsBeliever's Avatar

I'm going to use a cruciform fuse on my next 3DX. I had thought about mounting the horisontal stab just like you show. Do you have any idea if it will introduce any roll coupling? Also, do you tab your vertical fuse parts or just cut a slot?


Congrats on v13
Jun 13, 2004, 01:40 PM
Electric since 1990
Foamaholic's Avatar
Anyone tried the carbon fiber tubes and the shocked one on the 3DX?
Wondered if there is a big difference. I assume you don't the the tubes if you shock it? I've built 4 with the tubes, maybe I should switch. I find no fault with the ones I've built. I love them. Actually the first one is mine, and I built 3 for friends.
Jun 13, 2004, 02:21 PM
Registered User
ldammann's Avatar
Sorry, I'm a rookie to 3d flying. Wouldn't know a roll coupling if I crashed into it.
Maybe one of the more experienced flyers can answer.
Jun 13, 2004, 03:20 PM
Registered User
UB 30 inches doing it's best --- hovering ....
Jun 13, 2004, 06:18 PM
Registered User
ldammann's Avatar
I do the slots.
Like this https://www.rcgroups.com/forums/show...2&page=7&pp=15
Jun 14, 2004, 07:00 AM
ProBro 2174
Brazilnut's Avatar
Maiden my 3DX Saturday, hand launched it and it went out crazy, cut the motor and managed to land with no harm to it. Found that the elevator servo gears where ripped off.
Servos are Waypoint 9gr.
End of flight.
Jun 14, 2004, 07:51 AM
Really Ugly Stick!!
i use tubes in mine. my current 3DX has enlarged surfaces (about 3/4" bigger than plans) and flies great at slow speeds. it has many more flights than i can possibly remember and the foam is getting a little soft towards the tail. when i do torque rolls it performs flawlessly, but rolls at speed (what you might consider "normal" rolls) tend to twist the tail pretty good. the faster i go, the more it twists. it isn't really a problem, though. you might call it "synchronized rolls". my knife edge skill is still being developed, but when i get a good KE going, it flies straight and true. it only requires a breath of rudder. if i add more, it starts to couple pretty good (probably due to the twisting) and immediatly goes into a KE loop.
Jun 14, 2004, 01:09 PM
more power=almost enough
JetTech's Avatar

Finally got some photos

Hi guys,

Hope you don't mind me piping in here. I finally had someone with me that could take some photos. Here is one of my foamy factry extra planes.

Powered by himax 2025-5300
tanic 3s 2600 battery
apc12-6 sf prop.

Thanks Tim for the fun times........... Kerry
Jun 14, 2004, 01:39 PM
E-Flight Addict
ronin8451's Avatar
Make sure you don't turn the servo horns by hand, that's the quickest way to strip those little gears ! I have personally never stripped a Waypoint gear in my 6 gram servos, but Birdie has on his Outtaround combat ship after getting prop struck by Spadforme directly on his servo linkage.

Jun 14, 2004, 04:28 PM
Registered User
I built a yak with CF tubes and listened to all the excitement about the shocked designs and built another Yak only shocked and no CF tube in the fuse. The shocked one was heavier and less stiff. The shocked one was also less strong and has now been destroyed after being repaired from broken fuselages too many times. The one with the CF tube is still flyable and never broke the fuse even though crashed a lot.
So when I built the extra I got rid of the shocked feature and used CF tube in the Fuse.
I wont build another shocked design.
Just my 2cents.
Jun 14, 2004, 08:07 PM
Electric since 1990
Foamaholic's Avatar
Thanks tomd2. Maybe I'll stay with what I know, which is that the tubes work good.

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