How much cab over clearance should one have?
Lady up the way brought home an older lance. Bottom of camper cab over is in contact with top of roof of her pick up. Another lady (a friend) says "it's not touching much, no problem" I think it sh...
Forum Discussion
There have been a number of threads about this over the years. In typical internet fashion, the answers are all over the place. Let me distill it for you:
You have to deal with the flex. For a long bed truck with a north-south cabover bed, plan on 4" of clearance. For a short bed truck with a east-west bed, you can get away with 2" of clearance.
Your math is good on the spacer thickness. However, you can use 2 x 2's instead of 2 x 4's to save some weight. Maybe, go with 1/2 or 3/8 plywood on one of the sheets. You only need the full 4" if you are doing some serious off roading.
You have to deal with the flex. For a long bed truck with a north-south cabover bed, plan on 4" of clearance. For a short bed truck with a east-west bed, you can get away with 2" of clearance.
Your math is good on the spacer thickness. However, you can use 2 x 2's instead of 2 x 4's to save some weight. Maybe, go with 1/2 or 3/8 plywood on one of the sheets. You only need the full 4" if you are doing some serious off roading.
