tomstaf Posted March 18, 2012 Share Posted March 18, 2012 Hi, I need drawings/diagrams for the bogies used on the Class 442 Wessex units. The trailer cars had BREL T4 bogies. The motor coach had BREL P7 power bogies. Does anyone have or know where I can get hold of drawings for them please? Thanks Tom Link to post Share on other sites More sharing options...
RMweb Premium keefer Posted March 18, 2012 RMweb Premium Share Posted March 18, 2012 i don't know if it's different terminology, but but 'BR equipment 2' (gibbons) mentions BT13 trailer and BP20 power bogies similar to those on cl.319s some useful images here: http://www.semgonlin...class442_3.html i don't think in any case the trailer bogies are T4, as far as i can recall these were only used under mk3b loco-hauled DVTs. they seem to have a more normal sturdy frame with two sets of springs either side of the 'axlebox', as opposed to the radius arms of the EMU bogies http://www.traintesting.com/images/T4%20bogie.jpg Link to post Share on other sites More sharing options...
tomstaf Posted March 18, 2012 Author Share Posted March 18, 2012 i don't know if it's different terminology, but but 'BR equipment 2' (gibbons) mentions BT13 trailer and BP20 power bogies similar to those on cl.319s some useful images here: http://www.semgonlin...class442_3.html i don't think in any case the trailer bogies are T4, as far as i can recall these were only used under mk3b loco-hauled DVTs. they seem to have a more normal sturdy frame with two sets of springs either side of the 'axlebox', as opposed to the radius arms of the EMU bogies http://www.traintest.../T4%20bogie.jpg Hi Keefer, Thanks for the links. It appears that there were several variations of T4 type bogies. For some reason the Wessex bogies got the T4 classification too despite being very similar to BT13s. Cheers Tom Link to post Share on other sites More sharing options...
RMweb Premium keefer Posted March 19, 2012 RMweb Premium Share Posted March 19, 2012 hi tom, don't know if it was maybe an overlap between BR-BREL and more 'independent'-BREL? just thinking that the BT or BP branded bogies were an EMU derivative/development of the LH bogies - IIRC the bogies for the 310/312s looked similar to the B4/5s but were obviously further developed for their new roles (quite apart from being powered or not) admittedly not an area i'm fully aware of, but would the T- or P-type designations have come in during sectorisation/privatisation era, when BREL were completely separate and thus selling their wares on the open market? Link to post Share on other sites More sharing options...
tomstaf Posted March 19, 2012 Author Share Posted March 19, 2012 hi tom, don't know if it was maybe an overlap between BR-BREL and more 'independent'-BREL? just thinking that the BT or BP branded bogies were an EMU derivative/development of the LH bogies - IIRC the bogies for the 310/312s looked similar to the B4/5s but were obviously further developed for their new roles (quite apart from being powered or not) admittedly not an area i'm fully aware of, but would the T- or P-type designations have come in during sectorisation/privatisation era, when BREL were completely separate and thus selling their wares on the open market? Hi Keefer, The 't' means trailer and the 'p' means power. It's not associated with the dissolution of BREL. Cheers Tom Link to post Share on other sites More sharing options...
Titan Posted March 19, 2012 Share Posted March 19, 2012 I don't know when the system was introduced - the letter refers to the number of axles - eg class 37/55 bogies are refered to as CP3 I believe, but I doubt if they had that designation when first built. Link to post Share on other sites More sharing options...
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