In Gurps, how powerful do you need to fight a tank?

[Varyon]

Originally Posted by Anaraxes

Do we even have rules for damage caused by a heavy weight?

None that I'm aware of, and when it came up with respect to using Wall to create bridges (to determine the weight a bridge could support), RPK went with treating any bridge with enough DR to tank a 1-yard fall from the things moving over it would have no issues as a quick-ish hack. Personally, I'm fond of basing it on trampling damage (and I treat this as dealing full trampling damage - thr cr - if moving at faster than 1/5th your Move, half this - thr/2 cr - if moving faster than 1/15th your Move, and a quarter - thr/4 cr - if moving slower than that, which may include just staying stationary). But being caught in the gears seems like it would be more like having something bite down and worry away than simply having a heavy weight placed on you. I'd eyeball it as simply being thr cr - maybe with the damage based on 1.2xST since it's using the motive system (like how humans basically get +20% ST when grappling or striking with the legs). But, again, I'm assuming the character has enough DR to tank a hit by the main cannon, and if that's the case then unless the DR is limited such that it won't apply to being caught in a tank's gears (such as from having Ranged Only or similar) they're going to have enough DR to laugh at such. Although I wonder if their arm might be at risk of getting stuck - after all, if it takes a 1500 horsepower engine to shove your arm in there, ST 10 probably isn't going to be enough to get your arm back out...