04-02-2020, 04:50 PM | #21 | |
Join Date: Oct 2004
Location: California
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Re: Car Wars Tournament at Emerald City Comic Con
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as a civil engineer I'm curious to see how the superelevation is not possible. |
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04-03-2020, 01:57 PM | #22 | |
Join Date: Dec 2007
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Re: Car Wars Tournament at Emerald City Comic Con
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The "ground level" forms one side of a right triangle; the vertical wall forms the second side (making a right angle); the track surface itself forms the hypotenuse. If one measures 4" out from the inner edge of the track, then, one reaches 4" well before one reaches where the outer edge of the track is shown; that's where the top of the banking would be. If one attempts to draw the banking to where the outer edge of the track is shown, one ends up with the banking in the corners being considerably less deep than in the straights; which leads to the straights actually being "humpbacked" (which will do *very* interesting things to cars driving over same at speed -- in German, it's called a "Flugplatz"... >:) ) If one tries to draw the banking from the outer edge of the track, one reaches a point (literally) where the banking has to perform a 90-degree turn in order to follow the track -- and that would be *really* interesting to drive through (can you say "wall"?). In short: It is not physically possible to build the track as-described in the manual.
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04-04-2020, 01:22 PM | #23 | |
Join Date: Aug 2011
Location: Snohomish, WA
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Re: Car Wars Tournament at Emerald City Comic Con
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If you're doing a triple scale map, that would be 1' and 2' respectively (a piece of string and two pencils are useful for doing this). This should give an even width for the track all the way around (1' on the base). The outer edge of the track should be 4" high according to the description, which gives an actual road bed of 12.65" on the angle. That's how I'd tackle it anyways. Voila.
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04-04-2020, 01:23 PM | #24 |
Join Date: Aug 2011
Location: Snohomish, WA
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Re: Car Wars Tournament at Emerald City Comic Con
Hmmm. This wouldn't actually be that hard to build really. (Drums fingers...)
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Dynamax Designs, Designing quality since 2035. Watch your handling and remember to Drive Offensively! |
04-04-2020, 01:35 PM | #25 | |
Join Date: Dec 2007
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Re: Car Wars Tournament at Emerald City Comic Con
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(This would be far easier to discuss if I could post pics here, but "the world is what you make of it -- if it doesn't fit, you make alterations". :) )
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04-07-2020, 12:04 PM | #26 |
Join Date: Oct 2004
Location: California
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Re: Car Wars Tournament at Emerald City Comic Con
In a real world situation the full bank angle is only developed in the turns. In and out of the curves you have what called superelevation runout which is a transition length between full super and "normal crown" which is 2 percent slope (small amount of angle to allow rain to drain off the roadway) though since a racetrack is one way it is probably not really a crown. the length of the super runout depends on the difference in angle and the design speed. On the short straights you might not get back to normal crown.
However when you measure road width, you always measure top down, not along the angle of the super (hypotenuse) there's a decent diagram here http://mes100.com/blog/transition-length-benchmark/ |
04-07-2020, 01:37 PM | #27 |
Join Date: Dec 2007
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Re: Car Wars Tournament at Emerald City Comic Con
Not necessarily -- there's a velodrome up here which is (was...) also used for quarter-midget racing; it's a consistent banking all the way around. I think there used to be some full-size-car tracks like that, but none exist any more; closest I can think of are Bristol M.S., and Dover Speedway.
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04-08-2020, 09:07 AM | #28 | |
Join Date: Oct 2004
Location: California
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Re: Car Wars Tournament at Emerald City Comic Con
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04-08-2020, 01:56 PM | #29 | |
Join Date: Dec 2007
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Re: Car Wars Tournament at Emerald City Comic Con
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At any rate [ahem :) ]: The "CF Memorial"'s desc. says the banking is constant all the way around, so that's what I'm working from; and the ways the corners are drawn, It Don't Work, Mate. :)
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"Dale *who*?" 79er The Jeremy Clarkson Debate Course: 1) I'm Right. 2) You're Wrong. 3) The End. |
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04-11-2020, 07:45 AM | #30 |
Join Date: Dec 2013
Location: Janesville, WI
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Re: Car Wars Tournament at Emerald City Comic Con
If you want velodrome-like banking, that's Slinger Speedway. 30 degrees in the corners and 28 on the straights.
https://www.bing.com/videos/search?q...tail&FORM=VIRE https://www.bing.com/videos/search?q...0&&FORM=VDRVRV |
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