RSS Fetcher Posted March 13, 2010 Share Posted March 13, 2010 I wouldn't call it one of my quickest projects, after 18 months it's still not actually finished but I thought it would be appropriate to round up the bits that have been around before. Keyhaven won't feel right to me until there's a filthy old Crompton burbling away in early guise (probably GSYPWL - work that one out) and so a 33/1 and a 33/0 shell have been sitting for ages idly waiting for me to grab some time to attack them. I know I could probably just about live with the incorrect roof profile of a 33/0 but if I was going to go to the trouble of doing all the other bits to backdate it I thought I'd may as well make it as right as I could. Stage 1 - Hacking the body. The cabs have been cut away from the 33/0 with the cut being made just above the moulding line as shown below. It takes time and a will to cut gently and often rather than too deep in any one pass but a reasonably neat line can be taken by working freehand around the moulding. http://www.rmweb.co.uk/forum/download/file.php?id=28731 To give myself maximum room for error in doing this I cut below the moulding line on the 33/1 cabs and then filed back with a test fit process until it was near enough. There is a slight difference in the depth between the two moulding lines between the two variants, the 33/0 being around 0.5mm deeper, which is correct? I don't know but by this time it was easier to take more of the top of the 33/0 cabs than it was to take anything off the roof of the 33/1. http://www.rmweb.co.uk/forum/download/file.php?id=28736 Moving onto the roof it was relatively easy to determine the position of the old exhaust from the drawing below. http://www.rmweb.co.uk/forum/download/file.php?id=28733 What was concerning was the outer sides of the exhaust on the drawing were different from all of the images I had seen but I've followed the images rather than the drawings. Handily on the roof of the 33/1 are four little pimples (plate bolts or lifting eyes?) that appear to mark the position of the earlier exhaust so it becomes a case of joining those dots with a small saw. http://www.rmweb.co.uk/forum/download/file.php?id=28735 Once the panel is cut out the opening is tidied with a file, the removed section is filed back by around 2mm at each side and a vertical face prepared on each side. A plasticard liner will be created inside the body for the reduced exhaust panel to be glued upon. The clamps/brackets are removed from the roof by a shaving action with the knife, shaving from varying directions produces a reasonable result but any irregularities are removed by using a small file very softly over them. The newer style exhaust grille is also removed by shaving and filing prior to filling. http://www.rmweb.co.uk/forum/download/file.php?id=28737 So; that's the part done that had the potential to ruin two bodies, it was not as bad as I thought to be honest but it does represent 3-4 hours steady work and I haven't got anywhere near re-assembly - that will come when I've done some rubbing down. http://www.rmweb.co.uk/forum/download/file.php?id=28739 I shall  use the early 24 circular exhaust port (pic below) from the Brassmasters 24/25 detailing etch which is spot on for the dimensions given, the wife may also find a very small hole in one of her nylons to form the grille. http://www.rmweb.co.uk/community/uploads/monthly_01_2010/post-1-12643378515809.jpg The cavity around the roof horns was filled along with the later vent. http://www.rmweb.co.uk/community/uploads/monthly_01_2010/post-1-1264338824494.jpg The body and cab were brought back together. http://www.rmweb.co.uk/community/uploads/monthly_01_2010/post-1-12643388457667.jpg The following pic shows the vent and exhaust in situ. http://www.rmweb.co.uk/community/uploads/monthly_01_2010/post-1-12643399902064.jpg The remainder of the process was re-assembly, re-siting the speaker beneath the exhaust rather than beneath the cooling fan (why do we do that?) and taking it through the paint shop. As I said it isn't complete, it will be when I find where those Archers rivets for the roof got to though. View the full article Link to post Share on other sites More sharing options...
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