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How do I mount a Turnigy Park300?

skeplin

Senior Member
#1
Hi all -- please someone smack me upside the head and help to explain how these outrunner motors work. I'm used to the old-fashioned motors where the shaft turned and I hooked the prop to the shaft. So I purchased one of these:

19034-2.jpg

I understand the concept of the prop-saver (I think) but why does the shaft stick out the back of the motor where the mount is? And, what is the prop-cone looking piece for? Why would it attach to the back? Or is that the front?

19034-3.jpg


Total n00b. TIA.


Sean
 

earthsciteach

Moderator
Moderator
#2
The X looking thing is the motor mount. That screws onto the back of the motor (in this case - the side that the shaft is sticking out of). The X mount then is attached to the firewall of the aircraft. The "prop cone" is just another way to attach the prop to the shaft. You don't need both the prop hub and prop saver. They both accomplish the same thing. The prop saver will allow the prop to detach in the event of an unexpected meeting with a solid object, though.
 

earthsciteach

Moderator
Moderator
#4
What are you attaching it to?

In this configuration, yes the shaft would extend into the plane. You can actually push the shaft more forward if you so choose. There should be a set screw or two that lock it in place. Loosen those and you can lightly tap it forward. May not be necessary, but you may need more shaft for the prop hub.
 

phaques

Junior Member
#8
What are you attaching it to?

In this configuration, yes the shaft would extend into the plane. You can actually push the shaft more forward if you so choose. There should be a set screw or two that lock it in place. Loosen those and you can lightly tap it forward. May not be necessary, but you may need more shaft for the prop hub.

So, I just tried this - removing the set screws and tapping the shaft forward, and it wouldn't move, and now the motor won't turn under power. New motor, just broke it attempting this. Are you SURE the shaft is supposed to move forward in the motor?