garygid wrote:Just an empty cargo-carrier rack is about 50 pounds. Of course, a bike rack is much lighter.
To be useful, it really needs to safely support a cargo-rack plus about 200 or 250 pounds.
So, perhaps 300 pounds overall, I suspect.
With road shock, one probably needs to design for 3 or 4 times the anticipated static weight, right?
What somebody actually does with such a product, and what I will approve it to be used for might vary greatly. We design airplanes to 150% of design load to ultimate load (failure), and it is rare that an airplane structure fails. Very rare.
Nissan specifically does NOT approve the towing of trailers, therefore, neither would I. Nissan has a load limit in their published data as to how much it can carry. My design will not exceed that limit. Any weight or load placed in or on the car in such a manner, or quantity, that can render the car unsafe, will not be approved.
I do not foresee an approved design load of greater than 50 pounds for all the above reasons, and other reasons not stated. Injury or DEATH could result from exceeding the published limits. Damage to the vehicle, and other physical property may result from improper use of the product. Loss of value to the vehicle may result from the product's use, whether used properly or improperly. The state of California may determine this product can cause cancer.