Author Topic: Final Drive Bolt Schematic  (Read 2478 times)

Offline Roland

  • ^ Motobrick Curious
  • Posts: 65
Final Drive Bolt Schematic
« on: August 13, 2018, 06:16:00 PM »
Hello! I am trying to find the original bmw hole pattern for the from the of the final drive where the swing arm meets the drive. What are the dimension and angles involved in that layout? does anyone know where i can get the original bmw hole schematic for that area of the bike? I have tried measuring the spacing with calipers and using trig to find the unknown dimension but That is all guess work at this point. It would be very helpful if i got the actual numbers for the bolt spacing. thank you! cheers :beer:
  • California
  • 1985 k100rt

Offline rbm

  • ^ Quintessential Motobricker
  • Posts: 2308
Re: Final Drive Bolt Schematic
« Reply #1 on: August 13, 2018, 07:54:11 PM »
How about using a Bolt Circle Diameter calculator to get the BCD (https://littlemachineshop.com/mobile/bolt_circle_dia.php) and then a Bolt Hole Pattern  Calculator to get the layout (http://www.doov.com/cgi-bin/bolthole.cgi). 
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

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