Michael Osborne
Western Thunderer
John, I am very sorry to read your news. Words are not really adequate at times.
Mike
Mike
"Will"? Surely you mean "shall"? given that you have the experience from 4mm scale modelling.I am currently trying to get some clearance between the cross head and the leading coupling rod. There really isn't a lot of space,,,,but I managed to get the P4 model to work so this one will as well.
Absolutely."Will"? Surely you mean "shall"? given that you have the experience from 4mm scale modelling.
John, I got over the clearance problems by fitting a flush crank pin retainer. Admittedly a bit difficult if you have not got machinery. I used a brass top hat bush tapped 10 B.A. for the crank pin and milled out the rods to suit.Hi, I am currently trying to get some clearance between the cross head and the leading coupling rod. There really isn't a lot of space,,,,but I managed to get the P4 model to work so this one will as well.
That photo is fab.John, I got over the clearance problems by fitting a flush crank pin retainer. Admittedly a bit difficult if you have not got machinery. I used a brass top hat bush tapped 10 B.A. for the crank pin and milled out the rods to suit.
Another way is to build the rods by laminating the thickness of the rod and boring the outside laminate to suit the top hat and the inner laminate to the bush dia. before soldering the rod laminates together
Below is a S7 loco I built a few moons ago on which I milled solid rods from nickel.
View attachment 226801
Photo by Heather Kavanaugh.
Col.
Your engine looks brilliant ColinJohn, I got over the clearance problems by fitting a flush crank pin retainer. Admittedly a bit difficult if you have not got machinery. I used a brass top hat bush tapped 10 B.A. for the crank pin and milled out the rods to suit.
Another way is to build the rods by laminating the thickness of the rod and boring the outside laminate to suit the top hat and the inner laminate to the bush dia. before soldering the rod laminates together
Below is a S7 loco I built a few moons ago on which I milled solid rods from nickel.
View attachment 226801
Photo by Heather Kavanaugh.
Col.
It was built to S7 for Tony Watts of the South East Area Group along with two others in F/S for other clients as a batch build.Your engine looks brilliant Colin
No Mike, I milled these from my own patterns.Was that the batch of parts pantograph milled by Peter Turville about 25 years ago, or completely different?
Mike
Hi Colin, I did see one of them at a scale 7 meeting,it looked superb I just hope that mine will get near that finish.No Mike, I milled these from my own patterns.
LNWR 3 cyl. Compound “A” class 0-8-0 Goods Engine.