Have found SHS hi rail will run on 100 flex Ok but bump and jump at turnouts. Also seem to run OK on hand laid 100 OK. Flyer does not do well.
--- In [email protected], Don Thompson <d...@...> wrote: > > Dear Allen, > The SHS AF. comp. wheels used the design made popular in the early > 70's by Ace MRR Supply who was owned at that time by Walter Graef. > He told me that research had been conducted using the NMRA RP-25 wheel > contour for use on AF track. Unlike the wheels that AC Gilbert Co. > designed in the 40's, the RP-25 has a 3Ë tread which prevents the > truck from hunting for the center (going from side to side) like the > AF 0Ë tread. If you look at a AF train going down a long straight > away you can see the entire train going from side to side as it > travels down the track. Other tread improvements include a filet > between the tread and flange. This helps prevent the wheel from > riding on the edge of the flange. Another is that the bottom of the > flange has a radius. Once a wheel starts to climb over the flange, > this will help keep the wheel on the rail. Walter also told us that > the height of the flange only prevented derailment on stepped on track > where the rail takes very quick dive down. That once a wheel starts > to climb over the rail, the length of the flange did not make a > difference. That is why his flanges were so much smaller (more than > half I think) than the AF wheel and why they can be used with code 100 > rail (of course this also depends on the height of the spike head). > Don > > On Nov 19, 2010, at 2:26 AM, Allen wrote: > > > > > Strangely, I've never tried it. Can anyone clue me in? > > > > I am not referring to an AF wheel, but a Hi-Rail wheel like that > > made by SHS or AM. > > > > Thanks, > > > > W. Allen Evans > > NMRA / NASG > > > > > > > > > > [Non-text portions of this message have been removed] > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
