22 replies to this topic

[dotmatrix]

First thought:-..... put parcel tape over all those holes in the clutch cover, and you'll save a bit of power.

 

why is this?

[DeadSquare]

 

First thought:-..... put parcel tape over all those holes in the clutch cover, and you'll save a bit of power.

 

why is this?

 

 

Because the rotating pressure plate acts like a centrifugal air pump.

 

With a piston pump, if the outlet is restricted, the motor of the pump has to work harder, irrespective of how much is being pumped..............With a centrifugal pump, the work that the motor has to do, just depends on how much is being pumped, so restricting the outlet reduces the power needed.

 

With all those holes, instead of the otherwise same churned air in the housing, it is constantly being thrown out through the periphery holes and replacement air drawn in through those near the center, and this useless movement of air consumes a small proportion of the engine's power that is wanted to propel the car.

[luismx123]

 

 

First thought:-..... put parcel tape over all those holes in the clutch cover, and you'll save a bit of power.

 

why is this?

 

 

Because the rotating pressure plate acts like a centrifugal air pump.

 

With a piston pump, if the outlet is restricted, the motor of the pump has to work harder, irrespective of how much is being pumped..............With a centrifugal pump, the work that the motor has to do, just depends on how much is being pumped, so restricting the outlet reduces the power needed.

 

With all those holes, instead of the otherwise same churned air in the housing, it is constantly being thrown out through the periphery holes and replacement air drawn in through those near the center, and this useless movement of air consumes a small proportion of the engine's power that is wanted to propel the car.

 

oh wow...why do people do it then? just to save weight?

[dotmatrix]

oh wow...why do people do it then? just to save weight

and to cool the clutch

[dotmatrix]

Because the rotating pressure plate acts like a centrifugal air pump.
... and this useless movement of air consumes a small proportion of the engine's power that is wanted to propel the car.

is this also the case with the verto clutch or is this specific to the design of the pre-verto pressure plate?

[DeadSquare]

 

Because the rotating pressure plate acts like a centrifugal air pump.
... and this useless movement of air consumes a small proportion of the engine's power that is wanted to propel the car.

is this also the case with the verto clutch or is this specific to the design of the pre-verto pressure plate?

 

The less there is to "catch" the air, the less will be thrown, but if you look at the heater fan, there is no middle, just bent slits in a "Baked Bean Can".

[DeadSquare]

 

oh wow...why do people do it then? just to save weight

and to cool the clutch

 

And to let grit get sucked in, to get embedded in the friction surface, so that it lightens the flywheel and pressure plate by wearing them away.

[Spider]

 

 

 

First thought:-..... put parcel tape over all those holes in the clutch cover, and you'll save a bit of power.

 

why is this?

 

 

Because the rotating pressure plate acts like a centrifugal air pump.

 

With a piston pump, if the outlet is restricted, the motor of the pump has to work harder, irrespective of how much is being pumped..............With a centrifugal pump, the work that the motor has to do, just depends on how much is being pumped, so restricting the outlet reduces the power needed.

 

With all those holes, instead of the otherwise same churned air in the housing, it is constantly being thrown out through the periphery holes and replacement air drawn in through those near the center, and this useless movement of air consumes a small proportion of the engine's power that is wanted to propel the car.

 

oh wow...why do people do it then? just to save weight?

 

 

It's done to get some heat out faster.

And when it's running, it;s a great place to drop washers, nuts, tool and place your fingers too.