Wolf27 Posted June 30, 2014 Share Posted June 30, 2014 So far I have concentrated on the intermediate trailers and, ultimately, the only parts that wont be brass are the bogie sides and corridor connections. One trailer has been test built and it works well. cheers Shane 2 Link to post Share on other sites More sharing options...
BernardTPM Posted July 1, 2014 Share Posted July 1, 2014 ultimately, the only parts that wont be brass are the bogie sides and corridor connections. One trailer has been test built and it works well. Shouldn't you be using extruded aluminium? Link to post Share on other sites More sharing options...
modelpara Posted July 1, 2014 Share Posted July 1, 2014 Out of curiosity will these be compatable with the Hornby set or would a complete set of etchs be needed for a rake? Link to post Share on other sites More sharing options...
Wolf27 Posted July 1, 2014 Share Posted July 1, 2014 The etches are dimensionally similar to the Hornby model and the profile is almost identical. However it's all academic once its painted as the Hornby colours are totally different. Cheers Shane 1 Link to post Share on other sites More sharing options...
modelpara Posted July 1, 2014 Share Posted July 1, 2014 The etches are dimensionally similar to the Hornby model and the profile is almost identical. However it's all academic once its painted as the Hornby colours are totally different. Cheers Shane I will be repainting the lot at some stage anyway so thats not going to be a problem cheers. Link to post Share on other sites More sharing options...
Horsetan Posted July 4, 2014 Share Posted July 4, 2014 The etches are dimensionally similar to the Hornby model and the profile is almost identical. However it's all academic once its painted as the Hornby colours are totally different. If the set ever comes out as a kit, it'll either turn out to be a surprise hit, or people will be too scared to have a go! Link to post Share on other sites More sharing options...
modelpara Posted July 4, 2014 Share Posted July 4, 2014 If the set ever comes out as a kit, it'll either turn out to be a surprise hit, or people will be too scared to have a go! Depending on price id be tempted to buy two to complement my APT Link to post Share on other sites More sharing options...
Wolf27 Posted July 4, 2014 Share Posted July 4, 2014 You would need 8 intermediate trailers to make up a full set. Dont ask me how much a trailer is. I have no idea yet how much it has cost me to develop. cheers Shane 1 Link to post Share on other sites More sharing options...
damo2929 Posted July 4, 2014 Share Posted July 4, 2014 could the kit be built as resin casts from your 1st etch set to keep costs down ? Link to post Share on other sites More sharing options...
Wolf27 Posted July 4, 2014 Share Posted July 4, 2014 No, not really. That would complicate matters. It's brass all the way on this one, the test build proves the concept works, I will see if I can get a pic up this weekend. Resin is good for some of the details but for a complete vehicle it's fraught with potential problems, I found out the hard way when I built the full set of the prototype HST, which was mainly resin. Cheers Shane Link to post Share on other sites More sharing options...
Wolf27 Posted July 30, 2014 Share Posted July 30, 2014 As there seems to be a lot of people hankering after an all new APT-P, may I remind you that there is this to come in the next few weeks. S1430003 by Shane Wilton, on Flickr cheers Shane 17 Link to post Share on other sites More sharing options...
Flood Posted July 30, 2014 Share Posted July 30, 2014 (edited) Just a quickie. I've got a four car APT-P set that needs finishing (it will run with a prototype HST power car and Test car 9). Was the APT-P in actual executive light and dark grey (the exec light grey was nearer fawn) or was it painted in another set of light and dark grey shades? Seeing as it was made from 1977 to 1979 I feel the latter may be the case. If so does anyone know the equivalent Railmatch colours? Edited July 30, 2014 by Flood Link to post Share on other sites More sharing options...
modelpara Posted July 31, 2014 Share Posted July 31, 2014 As there seems to be a lot of people hankering after an all new APT-P, may I remind you that there is this to come in the next few weeks.S1430003 by Shane Wilton, on Flickr cheers Shane Weeks.... Im might hold off modifying further sets then and end up with two rakes! 2 Link to post Share on other sites More sharing options...
RMweb Premium Steven B Posted July 31, 2014 RMweb Premium Share Posted July 31, 2014 Was the APT-P in actual executive light and dark grey (the exec light grey was nearer fawn) or was it painted in another set of light and dark grey shades? Seeing as it was made from 1977 to 1979 I feel the latter may be the case. If so does anyone know the equivalent Railmatch colours? Executive Dark grey appears to be a good match for the dark grey colour around the windows. I don't think Executive Light Grey is right for the underframes and roof - it's too brown. I've been thinking that "Silver Grey" (Railmatch 244, Precision P180) is a better match. I believe the colours should be: Light Grey BR Spec 71 Item 37A Dark Grey BR Spec 71 Item 37B Rail Res BR Spec 71 Item 33 Whire BR Spec 71 Item 28 (BS4800 00E55) Black BR Spec 71Item 50 Orange BR Spec 71Item 90 There are also at least two shades of yellow - Item 31 & Item 96 and a green for inter-car connectors. Unfortunately I've not been able to track down a copy of BR Specification 71. If anyone knows of a copy online I'd be greatfull for a link to it.... Happy modelling. Steven B. Link to post Share on other sites More sharing options...
DCCmad Posted August 17, 2014 Share Posted August 17, 2014 Hi all, I'm wanting to get 2 new pantographs for my APT power cars, where can you get a prototypical or closely resembling one from? Thanks Connor Link to post Share on other sites More sharing options...
RMweb Gold Dagworth Posted August 17, 2014 RMweb Gold Share Posted August 17, 2014 Hi all, I'm wanting to get 2 new pantographs for my APT power cars, where can you get a prototypical or closely resembling one from? Thanks Connor APT carried two different types of pan during its lifespan, Stone Faively and later the Brecknell Willis "highspeed" pan, which one are you after? Andi Link to post Share on other sites More sharing options...
DCCmad Posted August 17, 2014 Share Posted August 17, 2014 APT carried two different types of pan during its lifespan, Stone Faively and later the Brecknell Willis "highspeed" pan, which one are you after? Andi Hi Andi, I'm looking to do one running around 1985? Thanks Connor Link to post Share on other sites More sharing options...
RMweb Gold Dagworth Posted August 17, 2014 RMweb Gold Share Posted August 17, 2014 Guy has given a pretty comprehensive answer on the other topic here http://www.rmweb.co.uk/community/index.php?/topic/46425-Hornby-apt-p-and-assorted-others/?p=1555308 for 85 you really need the BW Highspeed. Do you want the pan to be in contact with overhead? Andi Link to post Share on other sites More sharing options...
DCCmad Posted August 17, 2014 Share Posted August 17, 2014 Thanks Andi, yes I'll want it to be in contact with the overhead? Connor Link to post Share on other sites More sharing options...
modelpara Posted September 4, 2014 Share Posted September 4, 2014 Weeks.... Im might hold off modifying further sets then and end up with two rakes! I now actually have enough cars for three rakes (two of the rakes being single power cars) so just now need to wait for my bank balance to be emptied by Shane's etchs! Link to post Share on other sites More sharing options...
7APT7 Posted September 4, 2014 Share Posted September 4, 2014 Hi I would love to see those 3 rakes in a line up on your layout... have you changed the coach numbers accordingly or is that going to far... lol Jamie Link to post Share on other sites More sharing options...
modelpara Posted September 4, 2014 Share Posted September 4, 2014 Haven't got them all completed yet as I will be re spraying at some stage but first I have a layout project to finish (picked up the boards today! 1 Link to post Share on other sites More sharing options...
4474 Posted October 16, 2014 Share Posted October 16, 2014 Re ARC's post of 13th March 2013 about the wheel diameter on the trailer bogies, as I was the engineer who supervised the preparation of the manufacturing drawings I can tell him that the wheel diameter was 783.5mm. The reason for this peculiar dimension was that it was originally intended that they should be 785mm but, and here memory is slightly hazy as it was 38 years ago, we needed to put an insulating packing under the primary springs, so to avoid raising the height of the train and more importantly, to avoid the work involved in changing a number of drawings, it was easier to change the wheel diameter and sort the problems out at the series production stage (which never came). BTW the power bogie wheel diameter was 864 mm . Hope this is of interest. 2 1 Link to post Share on other sites More sharing options...
Gallows Close Posted October 18, 2014 Share Posted October 18, 2014 Hello 4474, The wheel diameter info is useful and interesting. I do have a question though, why was it so important to maintain the ride height?- particularly as the differece in wheel size was so minor.., Thanks and best wishes, Chris. Link to post Share on other sites More sharing options...
4474 Posted October 18, 2014 Share Posted October 18, 2014 Hello 4474, The wheel diameter info is useful and interesting. I do have a question though, why was it so important to maintain the ride height?- particularly as the differece in wheel size was so minor.., Thanks and best wishes, Chris. Hello Chris, There were no engineering problems in increasing the ride height, it was simply a case of avoiding the work involved in changing the drawings. It was the practice in the APT project group to put what were called reference dimensions on the assembly drawings, for example the height of the top of the airsprings above rail level which was 1150mm. These dimensions were fundamental to the design but not to the manufacture which is why on the working drawings they were shown in brackets thus (1150). Putting it another way, the various components that influenced the ride height had to be designed and manufactured so that if they were all made to their nominal dimensions the actual ride height would be equal to the height denoted by the reference dimension. There were no compromises on this. The reference dimensions were so important that they had to be the same on every drawing where they appeared and they appeared on a good many drawings. The drawing office was always under pressure to produce the manufacturing drawings so any work that could be postponed or avoided was always postponed or avoided. Hope this helps Link to post Share on other sites More sharing options...
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