Mk3 Battery upgrade - Shorai LFX21A6-BS12

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MexicoMike said:
The original rectifier/zener(s) works fine and it did so on my Commando. I don't see that the podtronics I now use works any better at all than did the Lucas rectifier/Zeners. The reason I went to the Podtronics was simply because my bike had the 3 phase lucas alternator with the associated rectifier/dual zener and the Alton alternator was single phase so I bought the Podtronics single phase for that reason. In actual charging performance, there is virtually no difference in the maximum voltage supplied. If my bike had had the original single phase Lucas alternator/rectifier/Zener when I installed the Alton E-start I would not have bothered with the Podtronics at all. Frankly, I don't see any advantage to it from an operational point of view.
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My experience was that over a period of 2yrs i replaced both the zener and rectifier at least once(1975-77), the podtronics and products like it, now 40 yrs later are reliable. that is the best reason to toss the lucas bits.
 
I recieved the rectifier from Jack, well packed and fast shipping, very happy!

It has a 30a ‘circuit breaker’ in line. If this ‘circuit breaker’ is ever tripped, how is it re-set ?

It’s a big ole thing, can I just replace it with a normal 30amp fuse ?


Mk3 Battery upgrade - Shorai LFX21A6-BS12
Mk3 Battery upgrade - Shorai LFX21A6-BS12
 
Fast Eddie said:
I ordered one from Jack at https://www.roadstercycle.com in the end.
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They do a good job of describing the differences between the real thing and the fakes
Fast Eddie said:
It has a 30a ‘circuit breaker’ in line. If this ‘circuit breaker’ is ever tripped, how is it re-set ?
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I suspect it resets itself when it cools
Fast Eddie said:
It’s a big ole thing, can I just replace it with a normal 30amp fuse ?
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I don't see why not. Carry extra fuses for it.;)
 
Fast Eddie said:
I recieved the rectifier from Jack, well packed and fast shipping, very happy!

It has a 30a ‘circuit breaker’ in line. If this ‘circuit breaker’ is ever tripped, how is it re-set ?

It’s a big ole thing, can I just replace it with a normal 30amp fuse ?


View attachment 9217 View attachment 9218
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Nigel,
Yes that breaker should reset itself. I didn’t get the wiring package from Jack but I just used a 30 amp blade type fuse. FWIW I didn’t use my existing wire harness, which is pretty much what Jack suggests. Wire the unit directly to the alternator leads and battery. I put a WeatherPac connection on the alternator wires. If I did it again I think I would go with Deutsch (sp?) connectors. They are a little smaller and nicer looking.
Pete
 
Fast Eddie said:
It has a 30a ‘circuit breaker’ in line. If this ‘circuit breaker’ is ever tripped, how is it re-set ?

It’s a big ole thing, can I just replace it with a normal 30amp fuse ?
Click to expand...

What current does that "30A" circuit breaker actually trip at?

You'd need to replace it with a 30A blow rated or 15A continuous fuse as the blade type or other 30A continuous fuse blows at 60A. o_O

https://www.arc-components.com/durite-standard-automotive-blade-fuse-30a-green.html
"30A continuous rating, 60A blow rating."

http://www.vehicle-wiring-products.eu/product.php/671/standard-blade-fuse
"30 amp continuous, 60 amp fusing Light Green"
 
I’ll go with what gtiller said earlier:

“i use the modern car type blade fuses - 20amp”
 
I don't care for blade fuses. I have had them blow but was unable to see the tiny fracture in the fuse, I had to check continuity with meter. I prefer the continuous glass tube type that are visibly obvious when they blow.
 
I have a little 4 fuse box on mine. It has the LEDs in it next to each blade fuse so if a fuse blows it goes on. I think I modified it for positive ground.
 
batrider said:
I have a little 4 fuse box on mine. It has the LEDs in it next to each blade fuse so if a fuse blows it goes on. I think I modified it for positive ground.
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How does it know?

I mean circuitry wise... how does that work?

I can understand it the other way around, circuit made = LED on, but not this way.
 
"We all know, current always chooses the low resistance path to flow. Here the fuse has very low resistance(null- in fact short circuit), hence it doesn't restrict current flow and full of load current flows through fuse only. In other words, LED has same voltage at its both terminals due to fuse(LED needs a breakdown voltage to glow)...
If fuse got burnt, there is only one way(i.e LED)to flow current and also LED gets the required supply voltage to glow(for Red LED-1.8V). Resistor connected in series with LED drops some voltage to prevent the LED from excess voltage and doesn't allow the load to operate."
Thank you Quora
 
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