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Western Railroad Discussion > If 1 Arrowedge is good........ Why not 4?Date: 03/18/18 18:38 If 1 Arrowedge is good........ Why not 4? Author: AMTRUK UP 8143 waits in Victorville CA. for BNSF helpers from San Bernardino, after 4766 expired.
18 MAR 18 Luke   Date: 03/18/18 19:10 Re: If 1 Arrowedge is good........ Why not 4? Author: UPNW2-1083 Someone's been hording them!-BMT
Date: 03/18/18 19:27 Re: If 1 Arrowedge is good........ Why not 4? Author: Realist Probably deadheading them.
Date: 03/18/18 22:23 Re: If 1 Arrowedge is good........ Why not 4? Author: exhaustED Surely just the one unit would have been enough with the massive reduction in drag resulting from four aero-wedges...the train must have almost pulled itself!
Date: 03/18/18 22:50 Re: If 1 Arrowedge is good........ Why not 4? Author: Hookdragkick Great Xeres that's alot of arrow...!
Posted from Android Date: 03/19/18 06:34 Re: If 1 Arrowedge is good........ Why not 4? Author: hotrail That one is a different design than the one UP announced in 2013, and that it claimed to have patents on, as was seen on the UP website or others pictured on this website.
This one looks a lot simpler and cheaper to make. Date: 03/19/18 06:48 Re: If 1 Arrowedge is good........ Why not 4? Author: DavidMKetchum Last week a west-bound had four(4) Arrowedge's MID-TRAIN thru Cheyenne! Weird.
Date: 03/19/18 07:11 Re: If 1 Arrowedge is good........ Why not 4? Author: CPR_4000 Don't know why the thing slopes downward in front . . . seems like that would add drag. Just bring the two sides to a point and be done with it, like a McKeen car.
Date: 03/19/18 08:18 Re: If 1 Arrowedge is good........ Why not 4? Author: davebb71 aerodynamics in every direction. if the engines were as high as the double stack, it would be a different story. but they are not, so you have to lift that air up and over. dave, out.
Date: 03/19/18 09:24 Re: If 1 Arrowedge is good........ Why not 4? Author: exhaustED CPR_4000 Wrote:
------------------------------------------------------- > Don't know why the thing slopes downward in front > . . . seems like that would add drag. Just bring > the two sides to a point and be done with it, like > a McKeen car. Same surface area or less would be the result of the down-slope...plus a little bit of down-force will help the train not take-off at higher speeds... Date: 03/19/18 12:38 Re: If 1 Arrowedge is good........ Why not 4? Author: Kimball Is the crew instructed not to pass over a scale track at speed, on account of the arrow wedge's downforce fooling the scale?
Date: 03/19/18 13:50 Re: If 1 Arrowedge is good........ Why not 4? Author: Notch8 Maybe they should put one arrowedge on in front like a railrunner trailer to push the air up over the loco into the second arrowedge
Edited 1 time(s). Last edit at 03/19/18 13:53 by Notch8. Date: 03/19/18 17:43 Re: If 1 Arrowedge is good........ Why not 4? Author: mkerner That style is a lot easier to build for us modelers.
Michael T Kerner Collinsville, IL Posted from Android Date: 03/19/18 17:47 Re: If 1 Arrowedge is good........ Why not 4? Author: gandydancer4 I KEEP TELLING PEOPLE.....there's a prototype for everything.
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