RMweb Premium uax6 Posted November 21, 2015 RMweb Premium Share Posted November 21, 2015 Here the bottoms of the masts that are embedded in the platform have chequer-plate covers at platform level, which I presume allow inspection of the bases... How about a balanced canterlever? https://commons.wikimedia.org/wiki/File:Cambridge_station_platform_4_look_south.JPG Or use a more substanstial beam on the top, those at Kings Cross use a beam with a diamond cut into them (again google Kings cross north end, in images there is a bbc picture showing these, but the box computer won't show the link) Or here: https://en.wikipedia.org/wiki/Rugby_railway_station Or a latice style https://commons.wikimedia.org/wiki/File:Stafford_railway_station_MMB_03_221133.jpg I'll let you off bolt heads... It depends what Neil has said about me if I'll own up to it! Andy G Link to post Share on other sites More sharing options...
RMweb Gold Dagworth Posted November 21, 2015 RMweb Gold Share Posted November 21, 2015 Here the bottoms of the masts that are embedded in the platform have chequer-plate covers at platform level, which I presume allow inspection of the bases... How about a balanced canterlever? https://commons.wikimedia.org/wiki/File:Cambridge_station_platform_4_look_south.JPG Or use a more substanstial beam on the top, those at Kings Cross use a beam with a diamond cut into them (again google Kings cross north end, in images there is a bbc picture showing these, but the box computer won't show the link) Or here: https://en.wikipedia.org/wiki/Rugby_railway_station Or a latice style https://commons.wikimedia.org/wiki/File:Stafford_railway_station_MMB_03_221133.jpg I'll let you off bolt heads... It depends what Neil has said about me if I'll own up to it! Andy G Note that the Stafford portals are only in use on Mk1 equipment and won't match up with the Dapol cantilevers, refer to Clive's comment re Gresley buffet in an HST Andi Link to post Share on other sites More sharing options...
RMweb Premium Clive Mortimore Posted November 21, 2015 RMweb Premium Share Posted November 21, 2015 Here the bottoms of the masts that are embedded in the platform have chequer-plate covers at platform level, which I presume allow inspection of the bases... How about a balanced canterlever? https://commons.wikimedia.org/wiki/File:Cambridge_station_platform_4_look_south.JPG Or use a more substanstial beam on the top, those at Kings Cross use a beam with a diamond cut into them (again google Kings cross north end, in images there is a bbc picture showing these, but the box computer won't show the link) Or here: https://en.wikipedia.org/wiki/Rugby_railway_station Or a latice style https://commons.wikimedia.org/wiki/File:Stafford_railway_station_MMB_03_221133.jpg I'll let you off bolt heads... It depends what Neil has said about me if I'll own up to it! Andy G Note that the Stafford portals are only in use on Mk1 equipment and won't match up with the Dapol cantilevers, refer to Clive's comment re Gresley buffet in an HST Andi Hi Andy and Andi Now the Rugby mast might be seen with Mk1 equipment as it is UK1 equipment. This is the stuff used to upgrade the WCML south of Weaver Junction, where you do find both Mk1/UK1 and Mk3 together. The diamond girder mast are found with Mk3 equipment, as at Kings Cross and with UK1 on the WCML. Some has even appeared on the GER line where new mast have been erected with the upgrade of the old 1500Dc mast. Based on the mast in the loco/dmu yard at Ipswich.Edit tell a lie this is based on those at Cambridge I did do the mast for the scissors cross over at Cambridge but cannot find them on this computer. Link to post Share on other sites More sharing options...
RMweb Premium Clive Mortimore Posted November 21, 2015 RMweb Premium Share Posted November 21, 2015 Link to post Share on other sites More sharing options...
RMweb Premium uax6 Posted November 21, 2015 RMweb Premium Share Posted November 21, 2015 I recongised that the mast at Rugby was MK1 stuff, but I had checked that it was the same diamond as the ones at Kings X, I just couldn't find a good piccy of the kings cross one with the Mk3 stuff hanging from it.... Clive those are good drawings and when i read your entry about the Cambridge Scissor one I pictured you actually making the full sized one... Pisst, don't want a full sized insulator do you? Andy G Link to post Share on other sites More sharing options...
terrysoham Posted November 21, 2015 Share Posted November 21, 2015 Thank you all for your recent help. Clive the drawings are great and will help me no end AndyG, I'm working on a prototype portal for the Neely platforms. Hope to get a pic which I will post here tomorrow. Link to post Share on other sites More sharing options...
terrysoham Posted November 22, 2015 Share Posted November 22, 2015 Clive, I've just been doing some checking using the Dapol 1:148 scale masts. In 1:148 scale the contact wire is about 35mm above the top of rail giving an actual height of about 5.2 m. Your drawings for 1:72 scale show it being 62mm which gives about 4.5 metres. I appreciate that there will be a tolerance regarding this height. Do you know what the minimum and maximum are? Kind regards Link to post Share on other sites More sharing options...
RMweb Premium Clive Mortimore Posted November 22, 2015 RMweb Premium Share Posted November 22, 2015 Terry would this be of any help? Link to post Share on other sites More sharing options...
terrysoham Posted November 22, 2015 Share Posted November 22, 2015 Thanks Clive, Your diagram suggests that the Dapol mast are therefore on the high side at a scaled height of 5.2m. I have NO intention of lowering them btw!! Regards Link to post Share on other sites More sharing options...
RMweb Premium Clive Mortimore Posted November 22, 2015 RMweb Premium Share Posted November 22, 2015 Thanks Clive, Your diagram suggests that the Dapol mast are therefore on the high side at a scaled height of 5.2m. I have NO intention of lowering them btw!! Regards Hi Terry It appears they may be too high. I wonder what rave review they got in model press and if the reviewer checked the dimensions? Link to post Share on other sites More sharing options...
ElectroSoldier Posted November 22, 2015 Share Posted November 22, 2015 Only place I know of with Dapol style stanchions for OHLE actually in a platform limit is at Edge hill station in Liverpool over the Up Chat moss as the line comes out of the Tunnel Road tunnel portal, there is a similar stanchion next to it but it has a different design to the girder. but it is in the 10 foot way between the Up Chat moss and what is now the Waterloo tunnel head shunt. Almost all the other stations from there on use the gantry style OHLE supports you see in the photo after those two. Link to post Share on other sites More sharing options...
terrysoham Posted November 23, 2015 Share Posted November 23, 2015 As promised here is a photo of the first portal platform mast constructed for Neely. The omission of the catenary is deliberate - life is too short! Best regards to Clive and Andy G. Thank you for your help. Link to post Share on other sites More sharing options...
RMweb Premium uax6 Posted November 23, 2015 RMweb Premium Share Posted November 23, 2015 Thats like looking out of the box window.... Andy G Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.