Flex on the t400?

Overall, there's some flex on the upper left side of the keyboard (if you push it with some force). But what's really concerning is that I noticed a "bump" on the plastic that has the power, volume, and thinkvantage buttons. And you can literally push on that small strip of plastic and it flattens out. Yes, there's that amount of flex on that section. Is it just me or did others (with the new t400) notice it as well?

Also, how the heck do you access the webcam? (Mine shipped with windows 7, 64 bit).

 

Sounds like you got the "weak" version of the keyboard.
Contact Lenovo for a keyboard replacement. Or you can buy a T61 keyboard onlind swap it.

 

Surprised to hear about the bump. That issue dates back to the T61. Mine has it. I've seen some where its perfectly flat. But most of the T61's had it. Undernearth is the LCD cable so dont press on it too hard. Just think of it as the hump in the back passenger area of your car for the transmission.

 

I don't have the bump but mine came with a flexy keyboard back in sep/oct. I called them and they sent me out a nice T61 keyboard that is very solid.

 

Mine (from March or April 2008) has the bump. I even had the keyboard replaced and the newer one is the sturdier T61-style keyboard. Still has the bump though. When I changed the keyboard, all I could figure that's causing it must be the combination of the monitor cable coming out from under that bump, plus the lack of any bracket or such to hold that area down. The flexy or non-flexy keyboard does not seem to matter.

 

Its the transmission hump. If you ordered a Honda or other front wheeled drive NB it would not have the hump.

 

No really? I never knew that front wheel drived vehicles power is applied to the front...

 

Pull versus pushed along from the rear. Strange thing is to see a Honda or Subaru or other FWD burn rubber.

 

Pull is worse propulsion, look at most well pumps, they are most all pumps that push water up to the surface rather than pull it up from the top, i don't know the exact physics behind this and why push is more advantageous, but i do know it's better generally, burnouts on front wheel drive cars look stupid to me, but whatever. Also, front wheel drive cars tend to torque up when you release the clutch too fast or sudden throttle and the wheels can be uneven across the pavement.

 

pump works by changing pressure of the fluids. In the case of pump pulling, it is doing nothing more than just changing the pressure in the well head by lowering the pressure, while the pressure of the atmosphere does the work on the liquid by pushing it up. However in such cases, the pump on the surface can do no better than keep a perfect vaccum (0 kpa), so everything is reliant on the pressure of the atmosphere to do all the work, which is usually at atmospheric pressure (depending on the location and altitude of the liquid body). So the performance of the pump is dependent on the pressure difference it can create, the larger the pressure difference the better the performance for the same set of pump. This is also the reason that in the old days, multistory buildings were limited in building heights, as the pulling pump can only supply water to certain height.

In the case of the pump pushing, it is physically imposing a pressure on the liquid, so it can go as high as it wants (under the condition that the bearing and pump casing doesn't break into pieces). Basically it can generate a greater pressure difference as compared to the pump pulling.

So this is a brief explanation of pump technology.