DOF Reality H2 or P2 Assembly Instructions

Modified on Mon, 21 Oct at 2:31 PM

Important Information before Assembly and Use


WARNING! Assembled platform will have exposed motors moving parts. 

  • Never operate it with small children around. Protection cover sold separately. 
  • During initial assembly don’t tighten the bolts completely, do it after everything is аssembled. Assemble the full frame and tighten the screws and bolts after.
  • Please check all the motor power and sensor plugs. Reconnect them if they happen to have been disconnected during shipping.
  • Never change the wiring. Mixing the colors to the connectors can damage the motors and platform controllers.
  • Don’t put ANY controllers on the platform before it is completely tested and proven to be working as desired. 


After assembly, attach the seat only; nothing extra. After you ensure that the simulator is moving appropriately, you can start adding controllers one by one, doing movement tests with a person seated in a chair. This will replicate the weight distribution.


Our platform is very lightweight and simple due to its perfect weight balance. This allows us to use affordable motors and gearboxes. If you plan to put something besides standard wheel, pedals, yoke, gear shifter, throttle and HOTAS you need to plan and install it properly. 


Each additional element (even if it is lightweight) connected to the moving platform should be well positioned and counter balanced. Even a light-weight screen/monitor placed on our simulator can cause problems. It is always better to consult us first, before installing any extra equipment on the platform.


Each platform control box is shipped preset to the voltage of the destination country. If you're not sure about the proper voltage settings, turn it upside-down and check ALL 2 or 3 red switches inside the box consult us. 


If you not sure what bolts to use, print the following 1:1 template on corresponding paper size without extra borders or spacing:


For US Letter Paper: https://dofreality.com/hardware_template_Letter.pdf

For A4 Paper: https://dofreality.com/hardware_templateA4.pdf


  • Never ever leave the platform powered unattended and powered on when not used. Motors are constantly doing micro adjustments and can heat up.
  • Never allow the motors to overheat (above 70°C) as they may lose power.


Video for Assembling Various Modifications of the DOF REALITY H2 or& P2


  1. SFU-Gearbox current Modification

    Video H2k or P2k with SFU and Kardans Joints:


  1. Worm Gearbox Modification

    Video H2 or P2 without SFU:
  1. Old SFU-Gearbox Modification

    Video H2s or P2s with SFU:



2. H2k or P2k with SFU and Kardan-Joints Assembly Steps


2.1.  Standing Legs.


2.2.  Mount the right front link to the crank from the outside.


The order of fasteners and parts is from right to left (from outside to inside):

Bolt M10x35 -> Right rod -> Spring washer -> Washer ->  Right gear crank -> Washer -> Nut M10




2.3.  Mount the left front link to the crank from the outside.


The order of fasteners and parts is from right to left (from outside to inside):

Bolt M10x35 -> Right rod -> Spring washer -> Washer -> Left gear crank - Washer - Nut M10




2.4.  Mount the main beam with the U-joint using M8x85 bolts.

Be careful with the small pins inside the universal-joint.




2.5.  Mount the main beam with the U-joint.

Insert M8x45 bolts into the holes from below.



2.6. Mount the Rod Holder under the main beam using M8x65 bolts. 

- Rod Holder located under the main beam.

- The hole on the ear is 10 mm at the bottom, 8 mm at the top.



2.7.  Mount the right front rod to the Rod Holder.

The order of fasteners and parts is from left to right (from outside to inside):

Bolt M10x35 -> Right rod -> Spring washer -> Washer -> Rod Holder -> Washer  -> Nut M10


2.8.  Mount the left front rod to the Rod Holder.

The order of fasteners and parts is from right to left (from outside to inside):

Bolt M10x35 -> Left rod -> Spring washer -> Washer -> Rod Holder -> Washer  -> Nut M10



2.9.  Mount in the front seat bar (long).

Insert M8x60 bolts from below.





2.10.  Mount in the rear seat bar (in last version same as front seat bar)

Insert M8x60 bolts from below



2.11.  Assemble the Wheel Holder mount.


2.11.1. Mount the horizontal side frame of the Wheel Holder with an M8x35 bolt. 



2.11.2. Mount the horizontal side frame Wheel Holder to the front seat bar with an M8x60 bolt.


2.11.3. Mount the horizontal side frame of the Wheel Holder with an M8x35 bolt


2.11.4. Mount the horizontal side frame Wheel Holder to the front seat bar with an M8x60 bolt.



2.11.5. Mount the left vertical mount Wheel Holder with M8x55 bolts.



2.11.6. Mount the left vertical mount Wheel Holder with M8x55 bolts.


2.11.7. Mount on the gearbox mount (F-mount) with M8x55 bolts


2.11.8. Mount the Wheel Holder table with M8x20 bolts.



2.12.    Mount the pedal plate with M8x80 bolts.


Congratulations, you’ve completed the platform assembly!


2.13. Fully assembled platform


3. Additional Options Mounting 

For the Buttkicker mount, you can use the bottom of the main rail or bottom mounts same as wheel stand brackets.



For HOTAS flight sim configuration, attach the throttle mount support same way as you did the main wheel stand. You can rotate the support and move it closer or farther away. If you want to mount a joystick on the side, you need to use F-mount.






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