moorlander Posted December 31, 2014 Share Posted December 31, 2014 hello, i am experiencing an issue with a Hornby R8073 point...When i shunt back (slowly) over the points my R6389 V Tanker ( 4 wheel ) jumps the points...I have tried moving it very slowly by hand and it does the same...All other rolling stock is ok... puzzled.. Link to comment Share on other sites More sharing options...
St1ngr4y Posted December 31, 2014 Share Posted December 31, 2014 Hi,Try checking the back-to-back measurements of the wheels on each axle. Compare them to other wagons.Ray Link to comment Share on other sites More sharing options...
2e0dtoeric Posted December 31, 2014 Share Posted December 31, 2014 If you look in the general threads, there is a lot of discussion about points problems, (apart from the melting ones!). A lot of it is back-to-backs, and some on the frog depths being wrong. Link to comment Share on other sites More sharing options...
Teedoubleudee Posted December 31, 2014 Share Posted December 31, 2014 I bought a lot of 2nd hand wagons and coaches and many suffered like yours with the back to back problems and I also replaced plastic wheel sets with metal. Much better now Link to comment Share on other sites More sharing options...
moorlander Posted January 1, 2015 Author Share Posted January 1, 2015 The tanker is brand new and the wheels are metal....going back to shop after new year to get it sorted Link to comment Share on other sites More sharing options...
Teedoubleudee Posted January 1, 2015 Share Posted January 1, 2015 The tanker is brand new and the wheels are metal....going back to shop after new year to get it sorted I take it all your other rolling stock OK? If so and you can't see the problem take it back like you.say. Link to comment Share on other sites More sharing options...
Flashbang Posted January 1, 2015 Share Posted January 1, 2015 HiNothing to do with DCC really!But 50% of derailing is due to the point not being laid flat both along its length and across. Double check all is correct. I use the edge of 12 inch steel rule placed along the rail top and any gaps seen between rule edge and rail top indicate a low spot which needs a shim of packing (card etc) to raise the low spot. The remaining 50% is caused by incorrectly set Back to Back wheel settings which in OO should be 14.4mm +/- 0.05mm. You can use a special gauge sold by good model shops or obtain them on line from places like 'The Double O Gauge Association' ordering their Intermediate Standard B2B gauge. Or just use a vernier calliper to measure the distance between the inside faces of the two wheels on the one axle. Also check and remove any build up of 'crud' from the wheel rims. Link to comment Share on other sites More sharing options...
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