Anyone have prints or photos of a typical horizontal centering spring arrangement as used on pilot trucks on US steam engines? What would be the range of spring loading? Thank you. tt
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Tom Tee posted:Anyone have prints or photos of a typical horizontal centering spring arrangement as used on pilot trucks on US steam engines? What would be the range of spring loading? Thank you. tt
I must admit that I was not aware of any "horizontal springs" inside real steam locomotive engine trucks (lead trucks), either single axle or two axle. You might try looking in Locomotive Cyclopedias for exact details.
Hot Water posted:Tom Tee posted:Anyone have prints or photos of a typical horizontal centering spring arrangement as used on pilot trucks on US steam engines? What would be the range of spring loading? Thank you. tt
I must admit that I was not aware of any "horizontal springs" inside real steam locomotive engine trucks (lead trucks), either single axle or two axle. You might try looking in Locomotive Cyclopedias for exact details.
Agreed. I've only seen vertical coil springs acting on the journal boxes in two wheel trucks, and leaf springs between the wheels on four wheel trucks. Could the leaf spring be considered "horizontal," even though its action is in the vertical plane?
Maybe something peculiar to European locos or other foreign locos?
Tinplate Art posted:Maybe something peculiar to European locos or other foreign locos?
Don't think so. Probably only model trains.
I wish the guy that asked the question would be nice enough to either acknowledge the responses--some of which required research and scanning--or clarify his question.
He is a nice guy. I am not sure he needs to acknowledge anything here. Maybe he is still thinking about it.
In any case this is useful information - we don't generally use heart rockers or other centering devices on models. When we post on forums it is usually so multiple readers can become better informed.
I too have often wondered exactly what is going on in a typical two wheel lead truck.
bob2 posted:He is a nice guy. I am not sure he needs to acknowledge anything here.
So,,,,,,,,common courtesy doesn't count for anything?
Maybe he is still thinking about it.
In any case this is useful information - we don't generally use heart rockers or other centering devices on models. When we post on forums it is usually so multiple readers can become better informed.
I too have often wondered exactly what is going on in a typical two wheel lead truck.
I have to agree with HW: Common courtesy would be reason enough for acknowledging all the responses to his inquiry.
