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| Re: BMT Standard Roofs and Ventilation (859434) | |||
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Re: BMT Standard Roofs and Ventilation |
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Posted by SelkirkTMO on Mon Nov 16 20:48:01 2009, in response to BMT Standard Roofs and Ventilation, posted by straphanger9 on Mon Nov 16 20:42:14 2009. Your theory as to the repalcement of the grill style to the vent style seems to be logical. Next time you ride the arnines, take a good long look at the roofline and interior and you'll see the same arrangement as in your last two shots. MY guess would be that there wasn't enough air movement with the first two designs while the latter design did cause much better air movement at the expense of some water getting in, which was trapped along the roofline rather than falling on people's heads.You'll note that on each half of each car, the positioning of the vents acted much like scoops in the front half of the car and exhaust on the rear half of the car in either direction, and that would move quite a bit of air with that arrangement as opposed to the earlier designs. |
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