locoworks

i suggest that for even the static model it is jacked up and the wheels and motion actually move. to look good it needs a 'chuffing' effect , on the old hornby models that had smoke there was a small cylinder and piston that basically sucked the smoke in and pushed it all out in a chuff so there was a pulsed smoke effect and not just a gentle wisp of smoke.

BB8

reminds me of the last time I drank too much.....

I think smithers head top is like an oreo biscuit.

nice work. annoyingly Gordon is an A3 but they only gave him a 6 wheel tender!! should be 8.

I expect all 3 rings to spin as one disc, I don't see the middle rings moving in different axis just because the gears are there, why would they want to move when it is easier for all 3 to spin??

they are Gresley coaches not Grisley , named after the designer Nigel Gresley who also, as it happens, designed the A4 Mallard

I realise there are some things you just cant do with lego and what you have done is very good. could you cheat and widen the cylinders to get clearance? and then use two bits to make a stepped connecting rod? it would only give you 1 stud extra clearance either side but it may work?? maybe another option is redesign the front bogie so nothing that moves laterally is higher than the wheel flanges? would gain more space further forward for stuff?

nice improvement on the front bogie, a couple more points, the piston rod in the cylinder lines up, even if the cylinder is mounted at a slight angle with the main driven axle centre line, usually the centre axle on a 6 coupled loco. it would connect to the same crank pin as the coupling rod journal the piston rod lines up with. it connects centrally so the deflection angles are the same +/- . I cant recall a connecting rod ever attaching to a coupling rod between journals except perhaps jackshaft drives?

very nice. :thumbup:

a key feature of the kings was the front bogie, it looked to have internal and external axleboxes/hornblocks, not easy to model??

a central diff is required because when turning, more so in sharp turns, the front wheel travels in a sligtly larger radius/arc to the trailing rear wheels so not only do the wheels on each axle have to rotate at different speeds, both axles have to rotate at different speeds also, not by much but without it one there is extra drag/resistence in the drive train. EDIT:: and while i'm typing a picture is posted that shows what i meant.

Cock O the North.

ok , i get your timing knightmare now. not actually as much destruction as you would expect going by the piccys. looks like it was fun

are they all pf or all 9v??. if pf just set all the receivers to the same channel and use 1 tranny. if 9v just isolate all the transformers at the wall and flick the switch