Vladbs Posted November 9, 2016 Share Posted November 9, 2016 Anyone else having problems running class 47 DCc/tts over Peco electrofrog points .A great diesel loco but one problem the middle set of wheels on the six wheel bogie are catching when running over points ,I have narrowed the problem to excess side to side play of the centre wheels ,now how to solve the problem ? Link to comment Share on other sites More sharing options...
St1ngr4y Posted November 9, 2016 Share Posted November 9, 2016 Have you measured the back-to-back distance between the wheels with a gauge?Ray Link to comment Share on other sites More sharing options...
Fozzy Bear Posted November 10, 2016 Share Posted November 10, 2016 Hi, I had the same problem with my 47 TTS and it is caused by the pickup contacts. One side had too much tension and was pushing the wheels to one side. I (very carefully) bent the loose side contact outwards until it exerted the same pressure and the other side and then the wheels ran in the centre. Link to comment Share on other sites More sharing options...
Vladbs Posted November 11, 2016 Author Share Posted November 11, 2016 Measured all 12 wheels and there is small discrepancies I have 13.9 14.00 14.00-- 14.00 14.2 14.00 measured with a micrometer Link to comment Share on other sites More sharing options...
Vladbs Posted November 11, 2016 Author Share Posted November 11, 2016 Have you measured the back-to-back distance between the wheels with a gauge?RayYes with a micrometer as follows 13.9 14.00 14.00 / 14.00 14.2 14.00 small discrepancies Link to comment Share on other sites More sharing options...
Vladbs Posted November 11, 2016 Author Share Posted November 11, 2016 Hi, I had the same problem with my 47 TTS and it is caused by the pickup contacts. One side had too much tension and was pushing the wheels to one side. I (very carefully) bent the loose side contact outwards until it exerted the same pressure and the other side and then the wheels ran in the centre.Had a look and found when the two sets of wheels on the same bogie move ide to side the said wheels were not in contact on one side with the contacts is that what you mean if so how to fix ? Link to comment Share on other sites More sharing options...
Chrissaf Posted November 11, 2016 Share Posted November 11, 2016 They are too close together. Someone here will tell you what the exact measurement should be, but it is nearer 14.5mm for 4mm 1:76 00 scale. I know 0.5mm doesn't sound a lot, but it can in many circumstances make all the difference. Link to comment Share on other sites More sharing options...
walkingthedog Posted November 11, 2016 Share Posted November 11, 2016 Back to back should be14.4 ish. The difference between 13.9 and 14.4 is quite a lot. Link to comment Share on other sites More sharing options...
Flashbang Posted November 11, 2016 Share Posted November 11, 2016 It is indeed 14.4mm plus or minus 0.05mmSee the wheel B2B setting as detailed by the Double O Gauge Association (DOGA) http://www.doubleogauge.com/standards/commercialwheels.htm Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.