Yeah, standard safety factor in my area is 7:1. So if you expect 1 ton of load, you actually rate your rig for 7 tons. But that safety factor is mostly to account for things like shock loads, where gear “weighs” more when it bounces. So like if all of your motors stop moving at the same time and the rig bounces slightly, it will temporarily put more weight on the motors than the static load normally would. So if you hang 1 ton on a motor that is rated to fail at 1.5 tons, you can easily cause a failure when the load bounces.
The safety factor also helps add a buffer for things like one motor being slightly more loaded than the rest. Even a small discrepancy can cause huge weight differences where one motor is holding a lot more weight than the rest. The 7:1 factor helps buffer that, where the motor won’t fail just because it’s slightly higher than the rest.
Oh, I don’t disagree. But I wasn’t a rigger for that show. I was just a light board op, who happened to overhear the lead rigger drop the “ChatGPT hallucinated and I was too stupid to double-check it” line. I just ran the “rigger grossly miscalculated the weight of this screen” alert up the flagpole, but it ultimately wasn’t my name on the rig. Not my circus, not my monkeys. But once that was pointed out and they realized the mistake, that’s when they busted out the lift and started hanging more motors. So at least they accepted the mistake and fixed it, instead of just brushing it off.
Yeah, standard safety factor in my area is 7:1. So if you expect 1 ton of load, you actually rate your rig for 7 tons. But that safety factor is mostly to account for things like shock loads, where gear “weighs” more when it bounces. So like if all of your motors stop moving at the same time and the rig bounces slightly, it will temporarily put more weight on the motors than the static load normally would. So if you hang 1 ton on a motor that is rated to fail at 1.5 tons, you can easily cause a failure when the load bounces.
The safety factor also helps add a buffer for things like one motor being slightly more loaded than the rest. Even a small discrepancy can cause huge weight differences where one motor is holding a lot more weight than the rest. The 7:1 factor helps buffer that, where the motor won’t fail just because it’s slightly higher than the rest.
If youre pushing that close to your limit with a bounce you really need to reevaluate your rig lmao
Oh, I don’t disagree. But I wasn’t a rigger for that show. I was just a light board op, who happened to overhear the lead rigger drop the “ChatGPT hallucinated and I was too stupid to double-check it” line. I just ran the “rigger grossly miscalculated the weight of this screen” alert up the flagpole, but it ultimately wasn’t my name on the rig. Not my circus, not my monkeys. But once that was pointed out and they realized the mistake, that’s when they busted out the lift and started hanging more motors. So at least they accepted the mistake and fixed it, instead of just brushing it off.