Looks like some sandpaper will do the trick, or maybe run a drill it the the hole in the hub. Now the heating idea will work too if you can install the screws from the to of the hub after is mounted on the engine.
Now you know that heat will expand the metal and cold will do the opposite! So I will try to stick the engine in your freezer for some time, but put in in a zipplock bag so you don't get moisture I your engine and then try to install your hub, it may work.
I'm back from NO so I will be at the meeting tomorrow
Joined Oct 2009
I will not be out at the field on Saturday. I got roped into family stuff I didn't sign up for. Good thing is I'll have plenty of time to work on my helis. The O550 is getting a new motor. Hopefully, the head parts for the F50 will arrive tomorrow so I can fix its head. I'll also continue work on the Velocity. Next up, the tail. Hope to post pics of the work I did on the frames later tonight.
Joined Oct 2009
As promised, here are some pics from the next part of the frame build, minus the engine/fan assembly.
I'll start with the fuel tank parts.
Now the assembled fuel tank.
All the left frame parts. Actually, I missed a few in this pic.
A-Arm flange bearing installed.
Left frame PEM parts.
PEM parts installed.
Govenor sensor mount parts.
Govenor sensor mount loosely installed.
Right trame, fuel tank and damper parts.
Fuel tank installed in right frame.
Left frame and fuel tank damper parts.
Right and left frame brought together.
Rear frame doubler parts.
Rear frame doubler parts installed.
Front frame doubler and canopy mounting post parts. Whoops! I already installed the frame doubler when I took this pic.
Front frame doubler and canopy mounting post installed.
Rear canopy mount parts.
Rear canopy mount installed.
Main mast bearing block mounting screws.
Main mast bearing block mounting screws installed.
Electronics tray mounting screws.
Electronics tray mounting screws installed.
Clutch assembly mounting screws.
Clutch assembly mounting screws installed.
Bell Crank Parts.
Bell crank ball links installed.
Pitch bell crank installed.
Aileron and elevator bell cranks installed.
At this point I am supposed to install the bottom frame stiffener and landing gear. However, the bottom frame stiffener bolts onto the motor mount which is not installed yet. I'm going to skip this part of the build and continue on with servo install.
Joined Oct 2009
Decided to skip the servo install and do the tail instead.
Tail rotor tail case parts.
Tail case torque tube gear. The gear must be glued into place or it slips out and the teeth strip.
Tail case torque tube gears installed.
Parts for the left side of the tail case.
Left side of tail case assembled.
Parts for the right side of the tail case.
Right side of tail case assembled.
Vertical fin parts.
Vertical fin assembled.
Tail rotor parts.
Parts for the left grip of tail rotor.
Left grip assembled.
Parts for the right grip of tail rotor.
Right grip assembled.
Pitch slider parts.
Assembled pitch slider.
Tail rotor and pitch slider.
Assembled tail rotor and pitch slider.
Tail rotor, tail case and pitch lever parts.
Pitch lever and ball link.
Ball link installed on pitch lever.
Pitch lever parts.
Assembled pitch lever parts.
Tail case and pitch lever parts.
Assembled tail case and pitch lever.
Tail rotor and tail case parts.
Completed tail rotor and tail case assembly.
There's quite a few images in this message. I think I'll complete the rest of the tail in another message.
Joined Oct 2009
Now for the forward torque tube assembly, tail boom and the final installation of the tail boom. I failed to take pics of individual parts here, so you will mostly see assembled parts.
Boom mount parts.
Boom mount mounting posts installed.
Torque tube gear installed in bearings.
Torque tube gear installed in boom mount.
Counter gear installed in boom mount.
Assembled boom mount.
Torque tube assembly parts.
Torque tube bearing support parts.
Bearings installed in supports.
Torque tube bearing supports installed on torque tube.
Torque tube shaft spline parts.
Torque tube shaft spline parts installed. I decided to only show one of these.
Tail assembly installed on tail boom.
Tail boom mount installed on tail boom.
Assembled frames and tail boom with boom support parts.
Parts for horizontal fin mount.
Horizontal fin mount installed on tail boom.
Horizontal fin parts. Gah! I forgot to take a pic of the completed assembly.
Frames, tail boom and tail boom mounting screws.
Tail boom installed into frames.
Tail boom support rod parts.
Completed tail boom installation.
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