Home Gym

I’m a heavy (350-to-375-ish) person looking to get a recumbent stationary bike for exercise, and I’m finding that pretty much all of the reasonably-priced models seem to list "weight capacities" of between 250 and 300 lbs, if they list one at all.

So I’m wondering if anyone out there can give me some idea of how realistic these weight limits actually are. Are they basically just there to protect the manufacturer from possible lawsuits or claims of "poor workmanship"? (If it’s actually a serious issue, why are there some models that don’t bother to specify a limit?)

When someone who is over the limit uses the equipment.. are we talking "It could fall to pieces without warning and leave you lying on the floor with a broken leg"? Or more like "It will wear out faster with regular use and might need to be replaced in 5 years instead of 10"?

I mean, I never ask what the weight limit of, say, an office chair is before I sit down in it, and I don’t exactly go around breaking office chairs by sitting in them…

I know that consumer goods are produced with a certain "factor of safety" on them to ensure a long life. This factor of safety means that the goods are designed to have significant one-time loads associated with them without breaking. For example, the aircraft industry uses a FS of about 1.5 – 3 for most parts. Civil engineers use a FS of 10 for bridges and other roadworks.

I would say that the weight limit on that machine is conservative, and exonerates the manufacturer if it were to break under usage. My recommendation is to use the exercise machine, just be careful and perform regular inspections.

This entry was posted on Monday, July 26th, 2010 at 1:55 am and is filed under home exercise equipment. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.