Re: 900082 is the newest rotary plow around (built in 1971
Author: J Mann
Date: 01-11-2021 - 08:20

UP also extensively rebuilt one of the ex-SP plows about 10 years ago and had it fail the first time it was out. The issue was bearing failure. SP used plain bearings and on the rebuild UP put in roller bearings. Unfortunately the mechanical engineer that picked the new bearings did not know how much of a load the Sierra Cement puts on the blade. The overloaded bearing self destructed. UP had to continue plowing with a non-rebuilt plow.
In the video "The Battle For Donner" filmed in the early '90's there is a scene in it where you see the SP guys packing snow around the bearing housings to cool them. It worked and they kept on plowing.



Subject Written By Date/Time (PST)
  900082 is the newest rotary plow around (built in 1971 F 01-10-2021 - 20:29
  Re: 900082 is the newest rotary plow around (built in 1971 x 01-10-2021 - 23:44
  Re: 900082 is the newest rotary plow around (built in 1971 WAF 01-11-2021 - 07:15
  Re: 900082 is the newest rotary plow around (built in 1971 J Mann 01-11-2021 - 08:20
  Re: 900082 is the newest rotary plow around (built in 1971 J Mann 01-11-2021 - 08:20
  Re: 900082 is the newest rotary plow around (built in 1971 Truth 01-11-2021 - 09:42
  Re: 900082 is the newest rotary plow around (built in 1971 J Mann 01-11-2021 - 13:47
  Re: 900082 is the newest rotary plow around (built in 1971 Nudge 01-15-2021 - 17:10
  Re: 900082 is the newest rotary plow around (built in 1971 Hot Water 01-15-2021 - 17:18
  Re: 900082 is the newest rotary plow around (built in 1971 I got it 01-15-2021 - 17:26
  Re: 900081 is at the National Museum of Transportation - St. Louis ES 01-11-2021 - 08:35
  Re: 900081 is at the National Museum of Transportation - St. Louis Hot Water 01-11-2021 - 10:58
  Re: 900081 is at the National Museum of Transportation - St. Louis Dr Zarkoff 01-12-2021 - 20:14
  Re: 900081 is at the National Museum of Transportation - St. Louis Mr. Goodwrench 01-12-2021 - 20:17
  Plow Did Fail on High Line per Pentrex UP Rotary Video Bolivian Blow 01-11-2021 - 11:38
  Re: Plow Did Fail on High Line per Pentrex UP Rotary Video Bolivian Correction 01-11-2021 - 11:56
  Re: Plow Did Fail on High Line per Pentrex UP Rotary Video Bubba 01-11-2021 - 17:17
  Re: Plow Did Fail on High Line per Pentrex UP Rotary Video Not Pentrex 01-11-2021 - 22:06
  Re: Plow Did Fail on High Line per Pentrex UP Rotary Video Mike Pechner 01-13-2021 - 20:55
  Re: Plow Did Fail on High Line per Pentrex UP Rotary Video Idiot catcher 01-14-2021 - 16:19


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