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I'll take a shot Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Thu, 24 Mar 2005 13:10:34
In Reply to: simple design & engineering questions, bing, Thu, 24 Mar 2005 12:31:09 Members do not see ads below this line. - Help Keep This Site Online - Signup |
For some, there is a decent engineering reason. For others, it is tradition. And if you have a parts bin full of one design, it's hard to change over unless there is a darn good reason.
And the US isn't the only market in the world. You have no way of knowing that the Republic of Blatslava requires the filler on the left, and since there is no other compelling reason, a manufacturer standardizes it on all models.
Stud/nut - taking the wheel on and off can damage the stud threads. With wheel bolts, the threads can be buried in the hub, and the hub is usually a very hard material. Bolts can be of a softer material, so in case of overtorque/damage, you just buy a new bolt. The weight of th car is supported by the wheel center on the hub center; the bolt only has to carry torsional loads.
Ignition switch - Who knows - just for fun. Maybe to keep the kid in the passenger seat from turning the car off.
Door lock position - simpler linkage at the rear of the door. Harder for the passenger to reach - they have to turn around to get to it.
Gas filler - personal choice - there are pros and cons for each. If it is on the passenger side, you won't get hit by a car if you need to re-fill on the side of the road. Or the driver can park close to the pump and still get out of his side. Or put it on the driver's side, so he doesn't have to walk as far.
Of course, go to a RHD car, and the arguments reverse. Again, pros and cons, and there is no 'better' side.
As to location, jp got it straight on - SAFETY. The old 'behind the license plate' design was a death-trap in a rear-end collision. The Federal safety rules on this stuff goes on for chapters. And each vehicle manufacturer has their own in-house design standards over and above the various Federal standards. And the US isn't the only folks out there with requirements.
Fuel fillers are placed as far away from anywhere as possible, and have to be placed to deal with packaging the hoses and venting with tank placement.
posted by 192.249....
, Thu, 24 Mar 2005 13:10:34 <-- Viewing This Message, Thu, 24 Mar 2005 13:12:23
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