i think that vol of water underneath the needle when it is dropped on water parallely is more which prevents the needle from sinking.
A needle sink in water.
the way it float is surface tension!!
Water surface tension hold the needle on the water surface.
It will float if placed carefully enough.
Surface tension
A needle can be made to float on very still water.
Yes, you can float a needle I have done it before. It doesn't have to do with density though it has to do with surface tension.
A needle sink in water.
the way it float is surface tension!!
The problem is most likely in the float bowl. The float could be bad. The likely cause is the needle valve that is control by the float is stuck, or dirt has gotten between the needle and needle seat. This is an easy fix. Carefully remove the float bowl. The float will be held in place by a pin. Remove the pin, and float. Check that there is no fuel in the float, and that it floats in gas, if not replace. The needle valve will come out with the float, as they are connected by a wire link. Make sure needle vale is clean, and able to move freely inside it's housing. Check the bottom of the housing at the needle seat to make sure it is clean of dirt. Reassemble, and you should be ready to go.
I would suspect a bad needle valve and seat in the carburetor. The float level can also be set too high. I would replace the needle valve and seat and check float level.I would suspect a bad needle valve and seat in the carburetor. The float level can also be set too high. I would replace the needle valve and seat and check float level.
It is in the float chamber of the carburetor.
No, no US coin is light enough to float when dropped in water.
Due to surface tension, the upper surface of water acts like a stretched membrane which enables it to float a swing needle.
The needle drops to allow fuel into the float bowl and rises against the seat to shut off the fuel from entering the float chamber.
A friend dropped hers into the lake the other day. It most certainly did not float.
The float could be stuck because of stuck needle valve, or rust. The float could also be leaking and be full of fuel.