- #36
DaveC426913
Gold Member
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Well somebody's feeling a little wounded...Buckleymanor said:Reckon you should stay of the road until you can read.
Well somebody's feeling a little wounded...Buckleymanor said:Reckon you should stay of the road until you can read.
Sorry, I'll spell it out.Buckleymanor said:The distance from my face to one of the side view mirror is about the same as the distance to the rear view mirror.
Appreciated though I am trying to get some points across even if I am a bit judgmental.DaveC426913 said:Sorry, I'll spell it out.
Distance is one factor. The other factor is how wide a field of view you need. While it is true that the driver's side mirror is the same distance as the rearview mirror, the requirement for field of view is not the same. Rearview mirror need only show what's directly behind you. Driver's side mirror needs to show everything from your left bumper all the way to the edge of your peripheral vision. This is much wider, and will not be captured by a flat mirror.
(P.S. The difficulty I'm having with you is that you are quick to judge (calling maufacturers "daft") without knowing the purpose or process that led to a design, and do not stop to ask yourself if maybe a hundred years of evolutionary design has given them a modicum of wisdom. I'd be much easier on you if you showed some humility. First, assume people know what they're doing; judge only as a last resort.)
It's not an inconsistency, it's an interplay between three parameters for the sake of one end result.Buckleymanor said:In effect both side mirrors are convex and with the passengers mirror 3-4 feet further away than the other mirrors does this not cause a certain amount of inconsistency with your argument.
So to clear things up are the drivers side mirrors in the U.S. convex like the passengers and not flat.Unlike an earlier post that said they were.DaveC426913 said:Sorry, I'll spell it out.
Distance is one factor. The other factor is how wide a field of view you need. While it is true that the driver's side mirror is the same distance as the rearview mirror, the requirement for field of view is not the same. Rearview mirror need only show what's directly behind you. Driver's side mirror needs to show everything from your left bumper all the way to the edge of your peripheral vision. This is much wider, and will not be captured by a flat mirror.
All the drivers side mirrors I've seen (in the US) have been flat, not convex. (Although a double mirror is not uncommon, where the smaller top part is convex while the main part is flat.) Only passenger side mirrors are convex.Buckleymanor said:So to clear things up are the drivers side mirrors in the U.S. convex like the passengers and not flat.Unlike an earlier post that said they were.
If they are convex do they take into account that they are nearer to the driver than the passengers side mirror and have slightly different optics, to allow for the factor of distance.
Doc Al said:All the drivers side mirrors I've seen (in the US) have been flat, not convex. (Although a double mirror is not uncommon, where the smaller top part is convex while the main part is flat.) Only passenger side mirrors are convex.
Can this be true.Doc Al said:All the drivers side mirrors I've seen (in the US) have been flat, not convex. (Although a double mirror is not uncommon, where the smaller top part is convex while the main part is flat.) Only passenger side mirrors are convex.
AndYou completely skipped over the salient bit, which answers your question quite nicely:
If the mirrors were not convex, the field of view that they displayed of what is behind the driver would be so narrow as to be useless (I've done this, it's useless).
The difficulty I'm having with you is that you are quick to judge (calling maufacturers "daft") without knowing the purpose or process that led to a design, and do not stop to ask yourself if maybe a hundred years of evolutionary design has given them a modicum of wisdom. I'd be much easier on you if you showed some humility. First, assume people know what they're doing; judge only as a last resort.)
Me thinks someone else should show a modecum of humiliation.Driver's side mirror needs to show everything from your left bumper all the way to the edge of your peripheral vision. This is much wider, and will not be captured by a flat mirror.
It's true. What pallidin stated in post #42 is essentially correct. (See: http://www.garamchai.com/askadesi/ask07.htm" ; it seems accurate to me.)Buckleymanor said:Can this be true.
Dave's statement about driver-side mirrors in the US being convex is incorrect.Daves allready stated.