Jump change methods

Here is a list of Jump Methods/Principles that have been rung

Doubles

Jump Stedman: 3.1.5.(31).(31).(31).(31).(31).5.3.1.3.1.3.5.(13).(13).(13).(13).(13).5.1.3.1

Minor

Mersey Ferry Treble Jump: (13)4.(35)x(64)3.(42)x
Cambridge Treble Jump: x36x1(243)x12x(354)6x14x56 le12
London Treble Jump: 36x36.1(243)x12x(354)6.14x14.36 le 12

The methods Cambridge and London Treble Jump, above, are formed from Cambridge and London Surprise respectively. This is done by causing the treble to dodge the wrong way round in 3-4, requiring a jump at the start and end of the cross-section. This can be done in general on any stage, in any pre-arranged dodging position, and causes the treble and dodging partner to be swapped with respect to the rows generated by the source method. For example:

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Primrose Treble Jump:   x36x1(243)x12x(354)6x14x56 le16
Norfolk Treble Jump:    x36x1(243)x12x(354)6x14x16 le16
Ipswich Treble Jump:    x36x1(243)x12x(354)6x14x16 le12
York Treble Jump:       x36x1(243)x12x(354)6.14x14.36 le12
Lightfoot Treble Jump:  x34x1(243)x12x(354)6.14x14.36 le12
Rossendale Treble Jump: x34x1(243)x12x(354)6.14x14.36 le16
Norwich Treble Jump:    x34x1(243)x12x(354)6x34x16 le16