Wednesday, March 18, 2015
wheels continued
The bigger wheels I have seen are with Bullock carts, Horse carts and later with Tractors. Bullock carts and Horse carts are usually having two wheels connected with an axle. The cart is pulled by the animal and the pulling is transferred to the wheels. The bigger size of the wheel make the carrying weight lighter to the animal.
17a. Bullock carts with four wheels
It was in fact when I came to Chennai in 1964, first time I saw bullock carts with 4 four wheels. These wheels were of the lorry or bus. Pulling became very easy for the animal having the loading area with four wheels support. Some times a person used to support from the back with pushing.
18. Three wheel cycles and rickshaws
The rickshaws and three wheel cycles were balanced on the third single wheel in the front and breaks were applied to the back wheels unless it is an abrupt stop. The cycle rickshaws were very common on those days. They have mostly disappeared from in the roads now in Chennai. Its place has taken over by autorikshaws.
19. Four wheel vehicles
The more number of vehicles are of four wheels. All cars, vans come under the group. The light vehicle licence means a licence intended to these vehicles for driving.
20. Six wheels vehicles
The six wheel vehicles are bigger vans, buses and lorries, which have 4 wheels in the back, two on either side in addition to the two front wheels. The engine transfer the momentum to back wheels and it is transferred to the front from the back wheels. Breaks are applied on back wheel as such first. The heavy vehicle licence means a licence intended to these vehicles for driving.
21. Vehicles with more wheels
To carry the weight of heavy items trucks are some times provided with additional wheels.
21a. intelligent boy
Most of us would have heard the heard the story of intelligent boy.
Once a heavy loaded truck came through a railway bridge and got struck up half way under a railway bridge, since the height was about 2" more. All the vehicles came later formed a queue. The engineers were trying the way to remove the heavy vehicle.
One boy from a car in the queue appeared before them. He said he has got a method to solve the problem and will describe if they permit. In short the boy told to let loose a small quantity of air from the truck wheels so that the truck will lower by two inches and then it can be started with top gear so that it will release from struck up and go forward. The same was done and vehicle cleared of the railway bridge and traffic problem was solved.
22. Where wheels are most important.
While a flight is landing, the wheels have to be pushed down and the weight of the flight has to be taken by the wheels in the runway. Hence all care is taken of wheels in the airplanes.
23. The steering
The steering is a wheel in all road, air and water vehicles. The steering is applied to change the direction.
23a. Ambalappuzha- Alleppy high way
On our child hood days we used to say the driver can take his hands and relax in the stretch, since there were no bends in the route!!
Later when came out of Kerala I could understand there are many routes like that. I have seen the longest straight route with less traffic in the Dubai- Sharja route for kilometres.
24. Smallest wheels
I have seen smallest wheels in the trolleys and largest wheels in the tractors commonly used. Reading members can write more about large wheels. I have excluded the small wheel planks used by legs handicapped people for moving.
25 Four wheel drive
The four wheel drive, which I started in the beginning means motion from engine is transferred directly to the four wheels, two in the front and two in back. Motion is not transferred from back wheels to front wheels.
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