Trying to 3D print a new Aero gear! Help

JPstealth

Established Member
So I pick up this Boston and Main (B&M) RR Police Aero from a guy in CT. Great condition internally minus a portion of the motor gear being stripped (figures). Anyone know the trick to get the pin out?

I am going to try to 3D print a new gear. But I can’t do it until I remove old one and don’t want to damage it for measuring purposes
Any help would be appreciated.
 

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Stampeed Valkyrie

Senior Member
Silver Supporter
as @ex416 mentioned you will need to use a punch to remove the roll pin.
I personally have tried 3D printing the "clutch" gear as this is called and have had mixed results. There is a member on here who sells reproductions gears if you need them. @ryan

Wear on this gear is accelerated usually due to binding or insufficient grease on the rotators and idler gears on theses bars. I would recommend going over each post and making sure they all spin freely and grease as appropriate.
 

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