[r-t] 40320 Spliced S Major

[Philip Earis]

The following message is from Tony Cox.  Due to some email problems he
hasn't been able to send it himself yet:

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"Presumably that's the first ever extent of treble-dodging major that
doesn't involve
Derwent-variants or a single every half-lead?"

Some time (2-3 years) ago I produced a 40320 of Spliced TD Major based on a
very simple idea. The following three methods
A k -56-14-56-36-34-58-34-18 (Norfolk)
B k -78-14-78-36-12-58-12-18
C k -34-14-12-18-78-58-56-18
allow an extent to be constructed using quarter lead splicing. The quarters
of each lead areselected  systematically from the methods above so that 78
never make any internal places within a
section and just ring a stretched version of Double Norwich.  The basic
block of
3 courses with sixths place bobs at 4ths is

AABB
AACB
CAAC (bob)
AACA
BABC
CBAB
ACAA
CABA
BCCB
ABAC (bob)
AAAB
BAAA
CBAA
BBAA
ABBA
AABB
AABC (bob)
BCAA
BBAA
CBCA
ACBC

where each 4 letter combination is a lead. Note the quarter lead change is
16 when the first quarter lead is C and 38
when the second quarter is C. In the second half of the lead it is 38 at
the 3/4 lead if C is used in the
3 quarter and 16 if C is used in the 4th quarter.
The extent is then obtained by adding calls to the tenor-together courses to
join the 60 in-course courses together. For example for a 3 part:
IOOO 35426
IVOOO 62534
IVOOO 43265
V 53462
IIIVO 35264
VVOSHSH 54263
OO 25463
VOO 23564
Repeat twice

The only slight complication is care must be taken to ensure the tenor
reversed course is selected correctly.

Precisely how you would describe this peal is more complicated than the idea
behind it. It contains quarter leads from 3 methods, or half leads from 8
methods, or
leads from 19 methods. It is unfortunate that the Council decisions tell us
nothing about how to interpret changes as methods.
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