Turning radius
Turning radius
How do you figure, the minimum turning radius, for the driver wheel base of a live steam locomotive?...is there a simple formula for this ?
- Bill Shields
- Posts: 10460
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: Turning radius
do you have a CAD system available to you?
it is actually easier to draw than explain
you need to know the fixed wheel base, the side-2-side play in the axles and the 'nominal' rail spacing.
it is actually easier to draw than explain
you need to know the fixed wheel base, the side-2-side play in the axles and the 'nominal' rail spacing.
Too many things going on to bother listing them.
Re: Turning radius
I believe the best way to 'calculate' the minimum turning radius of a specific locomotive is to lay the drivers out (such as the left side drivers) on a plan drawing (from above) in the largest scale that you can with great detail for tread profile. In CAD you're able to do this in full scale. At the centerline of the rigid wheelbase, include the half of the total lateral movement of each wheel set. From there the maximum radius can be plotted from flange radius locations then using CAD - make the minimum radius circle from those points. Sort of a crude way but Machinerys Handbook has formulas to do this type of math if you would rather do it that way.
Sorry I could not find the actual diagrams and math but I searched through the books that I 'knew' it was in - not... I have that data and will bring it up here - we are in the middle of a move to larger property - for track!
BC
Bill, we are posting at the same time with similar ideas.
Sorry I could not find the actual diagrams and math but I searched through the books that I 'knew' it was in - not... I have that data and will bring it up here - we are in the middle of a move to larger property - for track!
BC
Bill, we are posting at the same time with similar ideas.
Re: Turning radius
Hoppercar,
I sent you a PM with a web site link. See if that answers your questions. Also, if you have access to Grand Scales Quarterly Issue #29, Kell Schmidt wrote a 5 page article on minimum radius curves. He did a pretty good job on the whole subject.
Good Luck,
Terry
I sent you a PM with a web site link. See if that answers your questions. Also, if you have access to Grand Scales Quarterly Issue #29, Kell Schmidt wrote a 5 page article on minimum radius curves. He did a pretty good job on the whole subject.
Good Luck,
Terry