Originally Posted by ath512
Thank you again for your info.
What is the part number for the cnc bell cracks?
When you said that the 425 is actually a 550 but with shorter boom and belt
does that mean the frame and head is the same as the one in the gaui 550 kit? or is there any difference?
Because I will rely on Finless Bob videos for building the gaui 550.
Also to make it 550 size,do I only need this part "Tail Boom Conversion Set(with Belt 572XL) for 550L Blade" #204663
and 550mm blades. Right? or is there anything else like the tail blades?
I appreciate your help.
Yes. The the head and frame are the same as the standard 550 kit. You can even use standard sized servos in the 425.
I think the tail boom conversion set will be enough, but I'll probably end up replacing my tail blades with kbdd tail blades since I like orange tail blades
Just pick your 550 blades carefully, as the bolt that holds the main blades is 3mm on the plastic grips, and keep the headspeed below 1900rpm (unless you upgrade to metal grips).
You can see a full list of parts for the 425/550 here:
The cnc levers are #204612 and #204614. I believe you only need #204614, as the aileron and pitch levers have holes to remove the offset already.