RCU Forums - View Single Post - Stihl MS660 big bore conversion.
Thread: Stihl MS660 big bore conversion.
View Single Post
Old 11-23-2015 | 11:54 PM
  #69  
Jim.Thompson's Avatar
Jim.Thompson
 
Joined: Sep 2015
Posts: 444
Likes: 0
Received 2 Likes on 2 Posts
From: Bellingen NSW Australia
Default
The prop hub machining has been started. The counterbore is done to 25.025mm. I've removed it from the chuck and machined the mandrel to 25.050 mm.
This is the first time I have ever used a snap guage to measure internal bore diameters.
I'm ready to heatshrink the hub onto the mandrel. I'll get to tomorrow or the next day.
The drilling circle for the prop will have to be 34 mm or 35mm. I will probably make it 34 x 6 studs @ 5mm.
Attached Thumbnails Click image for larger version Name: Prop hub.png Views: 216 Size: 52.2 KB ID: 2132200  
Jim.Thompson is offline  
Reply Like