virginhst539 Posted March 9 Share Posted March 9 Think i have a book with a scale drawing of this and other RTC stuff. Infact i have a spare copy of it if its of any intrest to you Link to post Share on other sites More sharing options...
LMSfan72 Posted March 9 Author Share Posted March 9 1 minute ago, virginhst539 said: Think i have a book with a scale drawing of this and other RTC stuff. Infact i have a spare copy of it if its of any intrest to you Very much so! Link to post Share on other sites More sharing options...
LMSfan72 Posted March 10 Author Share Posted March 10 Started some test prints on bits for a 73/9 conversion. Slowly but surely… Hornby Dapol 3 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 11 Author Share Posted March 11 A slight change in approach. Looking at the prototype there is a join seam behind the cab doors. So, given the complexity of cutting bits out of the roof I am trying a new approach… 4 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 11 Author Share Posted March 11 Rapid prototype of profile and length of the FDM printer to see how it comes out. Really pleased! 5 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 11 Author Share Posted March 11 Update on the middle aged Mentor version too: Link to post Share on other sites More sharing options...
Denny Posted March 11 Share Posted March 11 The 73/9 looks very promising. Excited to see how it turns out! 1 2 Link to post Share on other sites More sharing options...
virginhst539 Posted March 11 Share Posted March 11 73/9s is going to be an interesting one to watch. the club I'm a member of are building Haymarket next so might well be in for a couple of them when the time comes. mentors looking a cracker of a kit, got a set of etched sides stashed away in the to do pile but I am tempted by the print once the build backlogs been cleared Link to post Share on other sites More sharing options...
LMSfan72 Posted March 11 Author Share Posted March 11 The sleeper version of 73/9 will need a bit more surgery to cut the cab roof away over the door and I think I will try and do a second version of the body with those additional roof recesses and equipment added! 1 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 13 Author Share Posted March 13 Starting to come together..... 4 1 Link to post Share on other sites More sharing options...
KDG Posted March 13 Share Posted March 13 On 11/03/2024 at 20:52, Denny said: The 73/9 looks very promising. Excited to see how it turns out! Me too 1 Link to post Share on other sites More sharing options...
KDG Posted March 13 Share Posted March 13 5 hours ago, LMSfan72 said: Starting to come together..... Nice one Andy. I knew you wouldn't be able to resist. 2 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 13 Author Share Posted March 13 (edited) 1 hour ago, KDG said: Nice one Andy. I knew you wouldn't be able to resist. 😁 Never really resisting! More the back of my mind working out how it might be done!! Edited March 13 by LMSfan72 1 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 14 Author Share Posted March 14 Nearly there with the GBRF version. The two double louvre grills need work as the STL mesh fixer decided they weren't there! I should be in a position to try a trial print this weekend... 3 3 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 14 Author Share Posted March 14 I think the only difference for the sleeper version, other than the cab roof, is that the remaining windows have now been fitted with louvred grills but they remain the same shape Link to post Share on other sites More sharing options...
KDG Posted March 15 Share Posted March 15 It's looking great Andy. Link to post Share on other sites More sharing options...
LMSfan72 Posted March 15 Author Share Posted March 15 On 09/03/2024 at 11:26, LMSfan72 said: First test print of the early Mentor. Need to tweak some supports but I am happy with it. I’m now running the later version with the rectangular spot lights that ran in RTC and also early Railtrack liveries So, with help from those in the know I have identified 5 different print versions of the body and different ends, approximate years: 1974 - 1986 as originally converted with round spotlights and window lights 1986 - 1990 similar to above but with some of the MK1 window light windows replaced with the more modern ones 1990 - 2003 the spot lights change to the square modern type 2003 - 2013 most of the other Mk1 windows replaced 2013 - to date the full refurb that I had already done. Minor roof changes happen overtime though The ends stay similar through much of it to 2013 but there were tail/marker light clusters fitted through much of the period from around 1986 - 2013 so I have those options done too!! My trial 1974 version is currently in paint, the 1990 versions printed and the others are slowly coming through (20 hours per print so when it doesn't work I lose a whole day!!) 4 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 15 Author Share Posted March 15 Once the printer is free of the Mentor run, I'll be seeing how it comes out!! 3 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 15 Author Share Posted March 15 I think the roof fairing just behind the cab will be best made from paper or card and stuck in place. Depending on the year, they sometimes have the windows replaced with grills and sometimes don't I think currently they are replaced - that's how I modelled it but easy enough to do either! 1 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 15 Author Share Posted March 15 3 Link to post Share on other sites More sharing options...
LMSfan72 Posted March 15 Author Share Posted March 15 Well, the added benefit of not doing the cabs is it fits on the smaller printer so I didn’t have to wait for Mentor! A mere 9 hours to print this. I had translucent resin in it so that’s not ideal for seeing the detail, but, it came out very well I need to stretch it by about 2mm which will also give some cutting/finishing tolerance. the one concern I have is if the body will bow over time - there’s no bracing so I might have to think about a way to hold the centre to the chassis… 3 Link to post Share on other sites More sharing options...
KDG Posted March 15 Share Posted March 15 Turned out well Andy. Do you have an idea what price these body shells will be? Link to post Share on other sites More sharing options...
LMSfan72 Posted March 15 Author Share Posted March 15 25 minutes ago, KDG said: Turned out well Andy. Do you have an idea what price these body shells will be? sent you a PM! 1 Link to post Share on other sites More sharing options...
KDG Posted March 15 Share Posted March 15 Replied Andy. Link to post Share on other sites More sharing options...
LMSfan72 Posted March 16 Author Share Posted March 16 All my coach models are designed so that the body “locks” into a chassis - or are single piece - to combat any distortion that happens over time. I am concerned that as the 73 is an open shell it may distort. I am being asked if I will sell the prints but because of this risk I am hesitant to do that. I am considering if another option is to print the entire roof and then the side grills/louvres separately so that an existing shell does form the “skeleton” - back to how I was doing it in earlier posts. I will finish a test model and we can see if it distorts!! 1 Link to post Share on other sites More sharing options...
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