tag:blogger.com,1999:blog-1758750253734020500.post3123609369138438797..comments2023-04-16T10:27:45.765+01:00Comments on Restoring coaches at Aviemore: Commonwealth bogiesfoxontourhttp://www.blogger.com/profile/00053481625494424876noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-1758750253734020500.post-56524281140271950482019-05-24T00:13:35.312+01:002019-05-24T00:13:35.312+01:00Could the reduction in unsprung mass be an answer ...Could the reduction in unsprung mass be an answer to the hole query. There is surely sufficient mass in the wheel itself to permit of some redundant metal removal.<br />macca1https://www.blogger.com/profile/09428257355653411397noreply@blogger.comtag:blogger.com,1999:blog-1758750253734020500.post-68172528245029678682017-11-13T17:43:03.269+00:002017-11-13T17:43:03.269+00:00Bruce
The honest answer is that I don't know. ...Bruce<br />The honest answer is that I don't know. All of our wheels have them, which modern railway wheels don't seem to. It caused problems when we sent some away to a large railway engineering company for re-profiling, they would only do the job if we signed an indemnity for them. You are correct thet the small holes are for balance weights.foxontourhttps://www.blogger.com/profile/00053481625494424876noreply@blogger.comtag:blogger.com,1999:blog-1758750253734020500.post-69269903505795769692017-11-12T12:41:19.991+00:002017-11-12T12:41:19.991+00:00Can I ask why the wheels have the four holes drill...Can I ask why the wheels have the four holes drilled in them. I guess the smaller holes are for balancing (photo above, LH wheel), but not the evenly-spaced four. I've followed the blogs with interest, and appeared sometimes in 'On track...'<br />Thanks<br />Bruce<br />BruceAnonymousnoreply@blogger.com