Wow! Three weeks since I posted. I have been busy, but not taking photos of progress.....
I had intended to make a detailed update of the instructions in the same way that I did for the ex-Fourtrack J6 but it became clear that this really would be putting lipstick on the pig: my effort will be better directed at getting the etches redrawn an producing instructions for that. At one of the first exhibitions that Trisha and I attended as traders we were told that there was a problem with the J21 kit and the brake hangers being too short. That little nugget of information was lodged in my brain but largely forgotten. However, when I tried to fit the outside pull rods it became clear that they were so high as to interfere with the coupling rod. It also seemed that the blocks sat too high. Then the realisation dawned: this kit is a blow up of a 4mm design for the J25 which has smaller wheels. The J21 elements are addressed by including an additional etch with revised cab, splashers and the outside pull rods. But the brake hangers - which I guess will be fine for the J25 are too short. There are some other areas where the J25 parts don't work.
I haven't yet resolved precisely how to fit the brakes so as I decided to get on with the tender and loco body. I have already lowered the pivot points for the hangers and will extend them with some scrap etch. I think the butchery will be hidden.
The tender went together mostly without issues. However, you get to a point in the instructions which is an apology for there being no floor to the coal space and no coal door: both missing from the etches. Neither are hard to knock up but it shouldn't be necessary. I just have to clean up some epoxy from the axleboxes and then will take a photo. It is still missing the brake standard. The instructions suggest to fashion something from wire. This is a bit strange as I have a Fourtrack brass casting for an NER tender brake standard, so I will acquire one of those when home.
The loco body has so far presented no real challenges. The running plate as supplied as cut outs for the smaller wheels of the J25 and the instructions include a diagram of the cuts required to enlarge these. The cab splashers took a bit of fettling and the cab floor has been consigned to the bin. There is a large hole in it, presumably to accommodate a gear drive to the rear axle. It's also a bit wide. I am at the point of fitting the boiler assembly to the running plate which is already bedecked with the cab and all splashers. The instructions suggest to fit some frame top extensions between the splashers but the parts supplied don't fit. Mostly I think because the splashers are bigger than on the J25 and hence closer together. The instructions also show you how to fold and fit the smokebox saddle: all well and good except that the kit doesn't include a saddle. Not really an issue as the smokebox front will locate the front and. The smokebox rear can be knocked up from scrap etch if required.
The firebox front pieces will also be replaced by a piece that goes completely across the firebox front rather than leaving a big gap for the motor.
I am hoping to complete this in the next 10 days as I am coming home on 17 July. The removal of the quarantine requirement is a big bonus. It has not been easy to get a flight and has caused severe wallet anguish at nearly £3000 for a one way ticket...............
David