Description
TH 39" EPP Crack Yak-55
The 39" Crack Yak-55 brings the familiar stability and responsive 3D performance of the original Crack Yak into a larger, fully airfoiled design with improved visibility and better outdoor wind handling. Its tapered wing, T-canalizer, side-force generators, and dual aileron-servo layout provide excellent roll authority, knife-edge stability, and predictable control throughout precision and aggressive 3D flight.
Features and Specifications
- Wingspan: 39 inches
- Estimated Flying Weight: Approximately 375 to 390 g / 13.2 to 13.8 oz
- Construction: Lightweight EPP foam with a fully airfoiled wing and carbon-fiber reinforcement
- Aerodynamic Features: Tapered wing tips, T-canalizer, and side-force generators
- Control Setup: Dual aileron servos with adjustable pushrod assemblies
- Recommended Battery: 3S 850 mAh LiPo with XT30 connector
- Flight Style: Sport, precision, freestyle, and aggressive 3D aerobatics
- Pilot Level: Intermediate to Advanced
Required to Complete
This is an airframe kit. The recommended power system, radio equipment, battery, charger, adhesive, and spinner are sold separately. No printed manual is included; downloadable PDF resources are available below.
Recommended Matched Power System
3S Setup: Use a 3S 850 mAh LiPo with XT30 connector and the included 10 x 4.7 Slow Fly propeller. A 25C or higher pack is recommended, with 25C to 60C burst maximum being a good range for this setup.
PC11 Power System Includes
- CSP 2213 1100KV 60 g brushless motor
- BOLT 22A ESC with XT30 connector
- Four CSP-D14M digital metal-gear servos
- 10 x 4.7 Slow Fly propeller
Important: Always confirm proper CG, control direction, motor direction, and ESC throttle calibration before flight. Remove the propeller before throttle calibration or ESC setup.
Additional Required Items
- 4-channel or greater transmitter and compatible lightweight receiver
- 3S 850 mAh LiPo battery with XT30 connector
- LiPo-compatible balance charger
- Foam-Tac and CA glue as specified during assembly
Upgrades and Compatible Parts
- View the Crack Yak-55 Carbon-Fiber Upgrade Kit
- View the TMW 39-Inch Aluminum Motor Mount
- Shop Compatible 37 to 39-Inch Replacement Parts
- View Compatible LED Lighting Kits
Resources
Videos
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Twisted Hobbys 39" Crack Yak
First flights with the production prototype of the much loved ...
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Twisted Hobbys 39" EPP Crack Yak-55 Flown at Triple Tree
Video Notes : Twisted Hobbys 39" EPP Crack Yak-55 Flown By Tea...
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Twisted Hobbys/RC Factory - 39" Crack Yak 55 - Build & Maiden Flight
Build process for the Twisted Hobbys - 39" Crak Yak 55. A how...
13 Reviews
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Practice plane
By far and above the best 3D practice plane on the market. Flys very, very slow and easy to hover. I’d have to say this is my most favorite plane in the quiver. I bought the big Crack but this one IMO flys better.
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Flies great but has build issues
After I got through the build issues (minor) I've flown it 30 to 40 times with not as much as a bad landing. It its 3D perfection. On high rates it rolls faster than anything else I ever had and yet I can take off straight up and it's so stable it can go for at least 5 seconds before I tough any of the controls.
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Great first 3D plane
I love this plane! It is my first 3D plane and I got it to try and learn this type of flying before I try to fly some bigger more expensive models! The only reason I didn’t give it 5 stars is due to the build instructions aren’t as clear as they could be and it would have been nice if it came with the instructions rather than finding the pdf online. The plane itself is great! My first time with this type of plane and have not had any crashes yet!
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Crack Yak
This Plane fly's like its on rails. On the maiden flight i was hovering doing rolling harriers and knife edge with no coupling love it.
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Best "simulator" ever
Flies really well. Always ready to be flown wherever you can. Doesn't get any better. I have the mini and lite versions. This is a nice addition to the family for outdoor fun.
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TH 39" EPP CRACK YAK-55 GREEN
This is the second foam plane I've built to try to learn 3D flying. All I can say is WOW!! I wish I'd started with this one (the other was not from TH). I enjoyed the build and flew it for the first time today - AWESOME!! I had high expectations and I'd say it met or exceeded them all. Excellent in every way! Take your time to build it straight & true and you will love this airplane - mine didn't even need one click of trim - perfect - makes me look way better at 3D than I know I am. I just want to fly all the time now!
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39" Crack Yak, fantastic!!
Love this plane. I am an old guy and just getting into 3D. This airplane makes it seem easier than it really is. No more falling out of hovers and slow post stall flight like my other 3D planes. I can see improvement in my capabilities every day thanks to it. I bought the power package and is perfectly matched. Seems to need a little more aileron throw than the stock arms provide. I can only get 35 degrees with my radio endpoints maxed out. First flight was a breeze and my grandson flew it with ease. Thanks!
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This is my go to
coming from balsa models this was a joy to build and fly. Will not go to the field with out it, now what's next :-)
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WOW! Love this airplane
I purchased the YAK 55 39 inch with all of the power combo pack and recommended accessories by Twisted Hobbys. I have to say that I don't care for the control arms for the elevator and rudder and the clevis hook ups. So I went outside the box and made my own which was much easier and just as effective. I flew the Yak for the first time yesterday. Wow, what a great flyer!! Immediately was doing prolonged hovers and torque rolls. Love this airplane. It was a moderately windy day but the wind didn't seem to be much of a factor. I highly recommend this winner!!
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One of the best overall Planes I own!
This is my go to plane to fly because it can fly in all conditions from windy to calm. With the stock combo the power is perfect. I also get 7 minutes with a 800 mah 3 cell battery. Hover to snaps this is my fun go to plane!