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The same question was asked in reference to a Commando a day or so ago. The topic was well-covered some time ago (L.A.B. has kindly put a link on the recent Commando post) and regular contributor Ludwig did an experiment where he put the rotor in a lathe and moved the stator in and out while measuring output to try to find the optimum position. he found it didn't make any appreciable difference at all as long as there was some reasonable amount of overlap between the two. This seems counter-intuitive however almost every later British bike seems to 'suffer' from this syndrome and I think L.A.B. has hit the nail on the head when he alludes to different chain widths and space requirements, This charging system was developed earlier than the later and larger British models, which needed to have beefed up primary drive systems to deal with more power, duplex and triplex chains resulted and the existing stators and rotors were obviously found to produce sufficient charging for their needs.

<blockquote data-quote="dave M" data-source="post: 105792" data-attributes="member: 346"><p>The same question was asked in reference to a Commando a day or so ago. The topic was well-covered some time ago (L.A.B. has kindly put a link on the recent Commando post) and regular contributor Ludwig did an experiment where he put the rotor in a lathe and moved the stator in and out while measuring output to try to find the optimum position. he found it didn&#039;t make any appreciable difference at all as long as there was some reasonable amount of overlap between the two. This seems counter-intuitive however almost every later British bike seems to &#039;suffer&#039; from this syndrome and I think L.A.B. has hit the nail on the head when he alludes to different chain widths and space requirements, This charging system was developed earlier than the later and larger British models, which needed to have beefed up primary drive systems to deal with more power, duplex and triplex chains resulted and the existing stators and rotors were obviously found to produce sufficient charging for their needs.</p></blockquote><p></p>

[QUOTE="dave M, post: 105792, member: 346"] The same question was asked in reference to a Commando a day or so ago. The topic was well-covered some time ago (L.A.B. has kindly put a link on the recent Commando post) and regular contributor Ludwig did an experiment where he put the rotor in a lathe and moved the stator in and out while measuring output to try to find the optimum position. he found it didn't make any appreciable difference at all as long as there was some reasonable amount of overlap between the two. This seems counter-intuitive however almost every later British bike seems to 'suffer' from this syndrome and I think L.A.B. has hit the nail on the head when he alludes to different chain widths and space requirements, This charging system was developed earlier than the later and larger British models, which needed to have beefed up primary drive systems to deal with more power, duplex and triplex chains resulted and the existing stators and rotors were obviously found to produce sufficient charging for their needs. [/QUOTE]