E-SKY Co-Axial Douphin

Inner Shaft (A) Replacement Tutorial

Tools Needed:
1.5 mm Allen Wrench
Small Phillips Screwdriver
Something to put little pieces into.

First off all it's not already off. You want to take the fly bar off. This is done by pulling the joint of the ball. Then pull the fly bar from the center up. It will release it's self from the inner shaft hub.

Then you want to remove the 4 blades. This is done by using the 1.5mm Allen wrench.


Now the body needs to come off. This can be done by removing the two solid carbon rods that are held in place by 4 rubber collars. These just pull off. Be sure when you get the body off that you do not pull too fast or hard. the LED wire is attach to the receiver in the front of the helicopter.


Then at the bottom helicopter there is a collar that holds the inner shaft from sliding up. this is directly under the sprocket. The collar is held on be two small Phillips screws. Take those out and the collar will pull off. It's pretty well pressed on. So it might take a little effort to get it off. but it will come off just by pulling with your hand.

Once the collar is off. You want to hold the sprocket and the top blade grips an twist and pull at the same time to get the sprocket off.

When the sprocket comes off the shaft will pull right out of the outer shaft (B).


Then you want to take the blade grips off the old shaft and put them on the new shaft. this can be done by taking the two small Philips screws out. When the screws are out. you want to give it a little twist either was and it free themselves from each other. Then you will be able to pull them out from the shaft.


To put them on the new shaft just do the opposite of what you did to take them off.

Once you have the blade grips on the new shaft you can put the new shaft in. It should just slide back into shaft (B) with no problems. If there is a problem, check for burrs on the new shaft. (unless damaged there should not be any burrs).

When shaft (A) is back in place you can put the sprocket back on. Make sure that the longer side of the sprocket is facing down away from the helicopter. This is the side that the collar goes on. to put the sprocket back on you can do this by the same method used to take it off. Line it up then push and twist. You'll know its on all the way when this is no longer any up or down play in the shaft.


Once the sprocket is back on. Make sure to align the holes in the sprocket up with the grooves cut in the inner shaft (A) end, for these are were the screws will touch the shaft. This keeps the shaft from spinning freely.


Now put the collar back on and align the holes on the collar with the holes on the sprocket.

Now put the screws back in. Make sure to screw the screws all the way in. Otherwise it may strip the grooves in the shaft.

Now the body can be put back on. But first be sure to plug the LED light back in. Assuming they are all the same. It should be plugged into the middle of the set of three pins on the receiver. Also the pins on the plug should be facing up.

If need be use some tape to secure the LED wire and the Receiver wire (if not 2.4 Ghz system)

Now that the body is back on. you can get the two solid carbon rods and put them back in.

Now that everything is back together.
CHARGE THAT BATTERY AND GET OUT THERE AND FLY

hope this was helpful for you.