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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Nippondenso alternator rotation
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<blockquote data-quote="timetraveller" data-source="post: 5985" data-attributes="member: 456"><p>Hi Guys, some of you will know that Dick Sherwin and I developed a car alternator kit to fit all models of post war Vincents. We now have over 40 of these out there with no problems so far. The alternator I use is intended to be used on a Citroen 2CV, Dyane etc. It has no cooling fan and can be rotated in either direction. I was loaned a 40 amp Nippon Denso alternator unit a few years ago to test out whether it would be suitable. I do not still have it so I cannot be sure it is the same model. However, when I set it up on a test rig, which is rotated with hand held electric drill which can be rotated in either direction, it ran fine in the correct direction and the drill really struggled when it was run in the wrong direction. I decided then that it might be suitable for a 'D' butdid not dare to use it on all the rest of the models as there was clearly some mechanical resistance which was likely to result in a reduced life for the unit. My guess at the time was the same as yours in that I assumed that there was probably an assymetrical slip ring system and the brushes were going to wear rapidly if used in the wrong direction. As it was not my alternator, and it was new, I could not justify taking it apart in case it would not go back together correctly so I did not investigate further. There was a further problem when compared with out 30 amp system in that the shaft which takes the drive into the alternator had a very small distance outside the alternator body. This meant that after taking off the original pressed steel 'v' belt pully we had to make a new input pulley to take our poly 'v' belt drive with most of the inside cut out to allow a nut to go onto the shaft to hold the new pulley on. Our normal input pullies are aluminium but so much of it had to be cut away to fit the Nippon Denso shaft and thread that I felt that these pullies would have to be made in either steel or stainless steel for longevity</p><p> </p><p>If your friend would like to know more about our kit, which is absolutely complete, then he or you should ask around at various rallies to find someone who is using our kit or email me on <a href="mailto:enw07@btinternet.com">enw07@btinternet.com</a> and I can send out some information. Good luck.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 5985, member: 456"] Hi Guys, some of you will know that Dick Sherwin and I developed a car alternator kit to fit all models of post war Vincents. We now have over 40 of these out there with no problems so far. The alternator I use is intended to be used on a Citroen 2CV, Dyane etc. It has no cooling fan and can be rotated in either direction. I was loaned a 40 amp Nippon Denso alternator unit a few years ago to test out whether it would be suitable. I do not still have it so I cannot be sure it is the same model. However, when I set it up on a test rig, which is rotated with hand held electric drill which can be rotated in either direction, it ran fine in the correct direction and the drill really struggled when it was run in the wrong direction. I decided then that it might be suitable for a 'D' butdid not dare to use it on all the rest of the models as there was clearly some mechanical resistance which was likely to result in a reduced life for the unit. My guess at the time was the same as yours in that I assumed that there was probably an assymetrical slip ring system and the brushes were going to wear rapidly if used in the wrong direction. As it was not my alternator, and it was new, I could not justify taking it apart in case it would not go back together correctly so I did not investigate further. There was a further problem when compared with out 30 amp system in that the shaft which takes the drive into the alternator had a very small distance outside the alternator body. This meant that after taking off the original pressed steel 'v' belt pully we had to make a new input pulley to take our poly 'v' belt drive with most of the inside cut out to allow a nut to go onto the shaft to hold the new pulley on. Our normal input pullies are aluminium but so much of it had to be cut away to fit the Nippon Denso shaft and thread that I felt that these pullies would have to be made in either steel or stainless steel for longevity If your friend would like to know more about our kit, which is absolutely complete, then he or you should ask around at various rallies to find someone who is using our kit or email me on [EMAIL="enw07@btinternet.com"]enw07@btinternet.com[/EMAIL] and I can send out some information. Good luck. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Nippondenso alternator rotation
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