Hi Steve , I want to thank you for posting all your videos and track progress. I did want to ask you is there a tutorial or a help video on how to plan a banked curve on building a track. I think I got most of it down but the bank turn thing kind of throws me off because I know it's not just a regular lauout.
When you draft up a plan for a track you ignore the fact that it may be banked. Get some good drafting tools and draw it up to the biggest scale you can fit on your paper size. The critical things are getting the inside and outside dimensions as close as possible to what you want the track to come out as. Next is accurately measuring the amount of degrees of each corner. A banked turn has the same outside circumference as a flat turn, the radius it is cut at is increased to achieve the banking. So circumference in inches is Pi x diameter divided by 360 times the amount of corner degrees.Always measure the circumference with a narrow tape measure taped to the outside of the corner and then draw your cut lines to the centre of your pivot hole of the circle cutter. Banked turn radius is determined by flat radius of the turn divided by the cosine of the amount of banking slope in degrees. So a 10 degree bank on an 8' turn is 48" divided by .9848= 48.74" but of course 48.75" is easy to measure and is close enough. Bank the turn by propping up the outside of the turn and pulling the straights attached to it together until they are where your drawing shows them to be. Thanks for the comment hope this helps.
Hi Steve , I want to thank you for posting all your videos and track progress.
I did want to ask you is there a tutorial or a help video on how to plan a banked curve on building a track. I think I got most of it down but the bank turn thing kind of throws me off because I know it's not just a regular lauout.
When you draft up a plan for a track you ignore the fact that it may be banked. Get some good drafting tools and draw it up to the biggest scale you can fit on your paper size. The critical things are getting the inside and outside dimensions as close as possible to what you want the track to come out as. Next is accurately measuring the amount of degrees of each corner. A banked turn has the same outside circumference as a flat turn, the radius it is cut at is increased to achieve the banking. So circumference in inches is Pi x diameter divided by 360 times the amount of corner degrees.Always measure the circumference with a narrow tape measure taped to the outside of the corner and then draw your cut lines to the centre of your pivot hole of the circle cutter.
Banked turn radius is determined by flat radius of the turn divided by the cosine of the amount of banking slope in degrees. So a 10 degree bank on an 8' turn is 48" divided by .9848= 48.74" but of course 48.75" is easy to measure and is close enough. Bank the turn by propping up the outside of the turn and pulling the straights attached to it together until they are where your drawing shows them to be. Thanks for the comment hope this helps.