30% gradient

[yello]

well whatever the gradient it was very steep

Indeed it was! If it was 'only' 20% it'd still be one helluva achievement to get up it.

I've a couple of late teen climbs around me and they take some effort. I reckon anything much over 20 would have me walking.

 

[threebikesmcginty]

There's only one way to definitely nail down the gradient of a hill.

Go back there with a 1m long spirit level and a measuring tape.

Hold the spirit level so ITS LEVEL with one end on the tarmac and measure the distance between the other end and the tarmac.
Then its simple maths.


The last time I described this, some joker took the piss, so I've been reluctant until now to repeat it.

It's the method I use if I'm calculating the angle of a roof - so it's ok by me!!

Found this which has tons of info ... http://www.1728.com/gradient.htm

Good climb though, SP!

 

[Sheffield_Tiger]

30% is massive....

Only one of those I've done was the hill out of Grosmont to the Pickering-Whitby road. I got off and pushed.

 

[zacklaws]

A little while back. I saw online an inclinometter that could be fittted onto the bars of a bicycle to measure gradient as you went up it.

Found a bit on it:-

http://www.chainreac...nclinometer.htm

Usually I measure the gradient by the road sign and in its lack of precence which is usually the case in the country lanes by my speed, cadence, gear, sweat, cursing and swearing.

 

[zizou]

There is a section of the sustrans cycle track near Greenock which is 40% thats the steepest i've seen signed anywhere. Short enough to be able to attack it though so not too bad.

 

[jimboalee]

There is a section of the sustrans cycle track near Greenock which is 40% thats the steepest i've seen signed anywhere. Short enough to be able to attack it though so not too bad.

There's a canal bridge at Chessetts Wood that is 1 in 2 ( 50% ). Beat that?

 

[jimboalee]

There's a canal bridge at Chessetts Wood that is 1 in 2 ( 50% ). Beat that?

OK.

On the Grand Union Canal tow path, there is a 300mm high 'stile' where cyclists are required to lift their bikes over it.

If the cyclist attempted to ride over it, it would be a zillion % gradient.

 

[adds21]

Talking of aptly named, the steepest hill I've been up is Gloom Hill, folk claim it is 30% but given I made it up with the 36x25 compact I doubt it.

There's an Awkward Hill near me (in Nempnett Thrubwell, which is also another excellent name).

However, I have to say that Awkward Hill isn't especially awkward.

 

[dan_bo]

There's a canal bridge at Chessetts Wood that is 1 in 2 ( 50% ). Beat that?

Ingleboro as used in the three peaks. 60%.

 

[Matthames]

Another way you can measure the gradient of a hill is to make a very simple clinometer. All you would need is:

2 Bamboo canes of equal length.
1 Protractor, if possible one that you could possibly put a hole in the middle of, if not then mount some paper onto some card and draw around the protractor and mark off the angles.
1 piece of string.
1 something to put weight on the end of piece of string.
1 drinking straw.
1 nail or pin.
1 Roll of Sellotape.
1 Scientific calculator or you could use your computer.
1 Friend

First stick the drinking straw on to the flat edge of the protractor and then pin the protractor to the end of one of the bamboo canes. Ensure that the protractor can rotate freely. Tie your weight on to the end of the string to create a plumb line and then tie the plumb line to end of the pin or the same end as the protractor. Give the other bamboo cane to your friend and ask them to stand with it up or down the hill slightly. With the contraption you have just made rest it on the ground and sight the top of the cane your friend is holding. Make a note of the angle of the plumb line.

Take that angle away from 90 and enter this number into your calculator with this equation replacing *: 1/Tan(*)

This will give you the ratio 1 in what your answer was. To get the percentage you just divide 1 by your answer and multiply by 100.

 

[dellzeqq]

Another way you can measure the gradient of a hill is to make a very simple clinometer. All you would need is:

2 Bamboo canes of equal length.
1 Protractor, if possible one that you could possibly put a hole in the middle of, if not then mount some paper onto some card and draw around the protractor and mark off the angles.
1 piece of string.
1 something to put weight on the end of piece of string.
1 drinking straw.
1 nail or pin.
1 Roll of Sellotape.
1 Scientific calculator or you could use your computer.
1 Friend

First stick the drinking straw on to the flat edge of the protractor and then pin the protractor to the end of one of the bamboo canes. Ensure that the protractor can rotate freely. Tie your weight on to the end of the string to create a plumb line and then tie the plumb line to end of the pin or the same end as the protractor. Give the other bamboo cane to your friend and ask them to stand with it up or down the hill slightly. With the contraption you have just made rest it on the ground and sight the top of the cane your friend is holding. Make a note of the angle of the plumb line.

Take that angle away from 90 and enter this number into your calculator with this equation replacing *: 1/Tan(*)

This will give you the ratio 1 in what your answer was. To get the percentage you just divide 1 by your answer and multiply by 100.

essential equipment on all touring expeditions!!!

 

[vorsprung]

I see your 30% and raise you another 3%

http://maps.google.c...p=12,24.87,,0,5

Near South Moulton

 

[HLaB]

I see your 30% and raise you another 3%

http://maps.google.c...p=12,24.87,,0,5

Near South Moulton

I thought 33% somebody has got their sums wrong , the I panned round; I wouldn't fancy coming down that in the wet