Wassel alternator/rotor
- Thread starter pierodn
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pierodn said:
If you have it, why not use it.
pierodn said:
To use a 3-phase alternator, you need a 3-phase rectifier and a "regulator" capable of handling the extra output.
So you will need to replace the original single-phase rectifier with a 3-phase rectifier (and fit at least two Zener diodes, there are two ways to wire double Zeners, either AC or DC but more about that later if necessary) or fit a modern 3-phase regulator/rectifier control unit which replaces the standard regulator (Zener) and rectifier.
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I have two bikes with the Lucas Powerbase that comes with an old-style rectifier and two zeners. They work fine. I have also been happy with two Sparx 3-phase alternators using electronic rectifiers. Probably any of these setups work better than the stock units, espicially if you ride with lights and turn signals.
Dear All,
well thank you.
If i fit a modern 3-phase regulator/rectifier control unit which replaces the standard regulator, i must use always the standard capacitor too?
But Boyer Bradsen power box unot works well the same with the Paxon? and i must leave the capacitor?
Ciao
Piero
well thank you.
If i fit a modern 3-phase regulator/rectifier control unit which replaces the standard regulator, i must use always the standard capacitor too?
But Boyer Bradsen power box unot works well the same with the Paxon? and i must leave the capacitor?
Ciao
Piero
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You can toss the blue can as its only useful to help start with points systems on such low voltage that no Electro brain ignition can run on, ie: sparks all over the place in piston positions. The issue with using the dual Zenors is to match em electrically so both are sharing the heat loads, when ever you are over charging somehow, maybe with stereo up too high. The main advantage of 3 phase is more wattage at lower rpm as single phase is fine over 2500 rpm. Podtronic rct/reg is so much simpler compactor and more efficient and can be easy concealed no need to be in the breeze like a modern stamped out wart.
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pierodn said:
It's up to you if you keep the 2MC capacitor or not.
pierodn said:
The Boyer Power box has the capacitor built in.
http://www.boyerbransden.com/pdf/Power_Box_Leaflet.pdf
Dear Les and all,
I need a final sugestions.
I have a 3 phases and also a 2 phases lucas alternator.
I must buy a power box.
Is better to buy and use the 3 or 2 phases powerbox: i have the standard lucas rotor.
Considering that i have the two standard 6 volt Luca coils, i must buy the powerbox for 6 or 12 volt?.
Thanks for helping me.
Ciao.
Piero
I need a final sugestions.
I have a 3 phases and also a 2 phases lucas alternator.
I must buy a power box.
Is better to buy and use the 3 or 2 phases powerbox: i have the standard lucas rotor.
Considering that i have the two standard 6 volt Luca coils, i must buy the powerbox for 6 or 12 volt?.
Thanks for helping me.
Ciao.
Piero
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- Nov 20, 2004
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pierodn said:
If you fit a 3-phase stator/alternator, then you must use a 3-phase Powerbox.
pierodn said:
The bike's electrical system is 12 Volt, therefore you need a 12V PowerBox. For Pazon electronic ignition (or Boyer etc.), the two 6V coils are connected "in series" thus: 6V + 6V = 12V.
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pierodn said:
A 3-phase alternator should give a higher output, especially at lower RPM than single phase, so theoretically at least, it should charge the battery more efficiently even when riding at low speed.
The Wassell 3-phase should have a similar output to the original Lucas RM24.
http://atlanticgreen.com/images/lucasrm24.jpg
Guys just to clear things up Wassell do not make a three phase stator
both thier own brand stators are two lead single phase units so use a single phase rectifier /regulator to save messing with diodes and plate type rectifiers
160W single phase for 47205 10AH equiv and 200w single phase for 47239 16AH replacement
both thier own brand stators are two lead single phase units so use a single phase rectifier /regulator to save messing with diodes and plate type rectifiers
160W single phase for 47205 10AH equiv and 200w single phase for 47239 16AH replacement
Hi Piero,
The Lucas single phase RM21 and RM23 alternators were replaced in about 1978 by the RM24 Three phase, three lead stators (ie 9 poles). They had the same output at 5000rpm as the older alternators
RM24 Lucas 47252 - 10.5A @5000RPM
RM24 Lucas 47244 - 14.5A @5000RPM
The quoted advantage of three phase over single phase, was to give slightly more output at lower RPM's (85% v 75% at 2,400rpm.
The Lucas single phase RM21 and RM23 alternators were replaced in about 1978 by the RM24 Three phase, three lead stators (ie 9 poles). They had the same output at 5000rpm as the older alternators
RM24 Lucas 47252 - 10.5A @5000RPM
RM24 Lucas 47244 - 14.5A @5000RPM
The quoted advantage of three phase over single phase, was to give slightly more output at lower RPM's (85% v 75% at 2,400rpm.
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Have another Wassell question....can their stators be used w/ an original Lucas rotor? My 1972 rotor is still good but my 10A stator had some cracks so I'll probably replace it eventually though it still works fine. Also it the rotor the same for the low and high power versions? My plan is to buy a 14.5A Wassell stator and a Podtronics box to use w/ my original rotor if that is feasible...but will replace the rotor too if that is recommended.
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