Dimension Help, Please

[GW]

Bob,
Having swapped to a YS 140 from a OS 140. They will use the same mounting holes. The problem was there was a slight difference in the thrust washer location when I made the swap. 
Its been a few months since I made the change, so I do not remember which was longer or shorter. It was about 3/32" difference in spinner spacing from the fuse.
I had been told they would interchange exactly, and the case is they will ""nearly"" interchange. The Nose rings are different diameters, the nose ring must be moved back a bit for one or the other "YS orOS" . and you need a shim behind your mount to make the fuse/spinner  spacing acceptable when going from one to the other. If you do not mind the increased spacing, its not a problem, it just looks like you did not know how to mount a firewall/mount/engine combo. It will look to the casual observer that you got it close, but not perfect. 


GW
Gerald Williams
Email : gw at gwair.com
Webpage: www.gwair.com

  ----- Original Message ----- 
  From: Bob Pastorello 
  To: NSRCAMail 
  Sent: Thursday, July 31, 2003 2:57 PM
  Subject: Dimension Help, Please


  Will someone confirm that the thrust washer to mounting holes, and mounting hole spacing (both width and distance apart) are the SAME for the:
      OS 1.40RX
      YS 1.40L
      Mintor 1.40  

  Trying to make certain of some motor installation issues/questions!

  Any help appreciated!

  Bob Pastorello, Oklahoma
  NSRCA 199, AMA 46373
  rcaerobob at cox.net
  www.rcaerobats.net

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