Mossys 3D Models

I will remember that Rob, thanks. So far the masking tape has been on the inside so leaving it in place didn't do any harm.

 

I've been very quite over the Christmas period, primarily because I was told where to put all my models and tools in no uncertain terms. However a few things have happened, first the bad news, I finished hand painting the interior then checked it with the photo supplied by Tom, oops I got it wrong so that's needing to be reworked. Good news a fat man with a red and white coat and a long white beard delivered two more sets of wheels, care of my two grand children aged 4 and 2 excellent work by 2 very young children, no parental assistance honest, so I now have enough for all three builds, they are currently in the early stages of being painted, and today is my first day back modelling.

I finally got around to fit the brake gear to my test bogies, originally planned to do both, but the first one worked so well there's no need to do build the second. More bogie parts are currently being printed as I need 6 for the low arc's and another 2 for the autocar (on the back shelf for now).

Although I may well end up totally scrapping this carriage I am going to take it through to completion it now looks like this:



One bogie now has brakes and brake yokes:



Now I know all the processes and build steps, these 2 bogies will be broken up ready for the proper build jobs. The last thing I needed to figure out was how a doubled ended Westinghouse brake linked up with 2 bogies and a guards brake handle, the solution - look at the instructions of a D&S autocar and there it is in full detail, two simple cranks to reverse a push motion into a pull motion, a few more bits to model.

Mossy

 

Andy,

Never seen a photo or diagram of the bottom of a brake standard so wouldn't have a clue what gearing is involved.
As for the brake rigging, I hate people who point out the blinding obvious mistake I have made. Hate myself more, haven't got a clue how I got myself in this pickle, I checked one of the sketches they are drawn from and your right they should be clasp brakes on all 8 wheels so need a complete redraw jobbie, such is life .

As for the coach time will tell - yes, no, perhaps who knows.

Mossy

 

Cheers Mate, i will add that to my list of air brush lessons. At the moment the first carriage is being done with a mixture of rattle cans and hand painting. I'm currently trying to finish of the under carriage but have realised I had missed a few bits, these are currently printing but the queen posts/turn buckles have been fitted. I will post up a piccie later.

 

Couldn't be %^&&%$£ redrawing the brake yokes, still %^&**( off with my stupidity, so decided to finish off the undercarriage some good, some ok and some bad.
Queen posts and turn buckles fitted nicely.



Westie Brake and linkages, bit of a faff but done. The linkages are needed to reverse the action of the westie brake. The 2 brass rods running along the centre line would go to the bogies, the third running close to the solebar links to the brake standard in the guards end. All this taken from the D&S dgm 116 sketch, but none of the low arc sketches I have give any clue as to where the brake standard would be, so I have left it parallel to the the solebar.

The ok bits. I know I have printed at least 4 emergency air tanks, where the &** are they, also there at least 4 gas tanks printed I can only find 2. I'm blaming the "put it all away" instruction from the boss pre Christmas. I know a full 7 compartment carriage uses 4 gas tanks, this compo has 4 compt's and a brake section so in theory needs sort of 2 1/2 or 3.

The bad bit, the running board that sits between the 2 bogies has 5 supports, I though I had offset these from the queen posts to give some clearance but haven't so need to find a way around it for now. Long term it will be fixed just in case and more chassis are needed.

 

Paul,

I am by no means a brake expert, Tom Burnham is probably the person to verify if I am right but here goes. Firstly the mechanism is a Westinghouse brake (not a vacuum brake) and is fixed to the carriage floor so not able to move, the application of the brake moves a piston outwards from the main body rather than inwards. In this case it's actually a double ended brake unit so two pistons simultaneously move out from the centre line of the coach, one in each direction. The two linkages are pivoted about their centre line and simply convert the outward push to to an inwards pull, that movement applies the brakes. And yes looking at the diagram for the D&S coach the handbrake appears to be capable of operating only on one bogie.

Opposite the brake unit will be, but not fitted yet is what is described as a reserve air cylinder which I assume boosts the air supply if the air pressure is low.

Mossy

 

If your talking about a 4 wheeled clasp westie braked wagon, then you would need a single action cylinder which rotates a central spindle with a linkage to both sets of clasp brakes. If it's dual braked then the vac cylinder needs to be on the opposite side to the Westie, that way they each rotate the centre axles in the opposite sense.

Mossy

 

Life has moved on, underskirt all finished, running boards a bit bodged, but I have a solution for the other chassis.

 

Thanks Paul,

I'm not to happy having to bodge the running boards but life is as it is and it doesn't show when seen from the side. The next one will be far far better and everything will be added before going near it with any paints,