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Electric puzzle for you.

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Electric puzzle for you.

Post  dr-sidevalve on Sun Dec 05, 2010 6:19 pm


[url=https://servimg.com/image_preview.php?i=6&u=15949299]


Ok guys I know its been done and more than once before ! One picture is of the original 2T twin rectifier and one is of the modern solid state type I want to replace it with.. The original has 3 poles and the solid state has 4 terminals namely 2x Ac inputs, an earth and the Dc output ..Ive scrutinised my 2T wiring diagram (black,red, green and earth wire) and cant work out how to plumb it in .. Im sure its easy ....When you know how ! Regards Dr-Sv

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Rectifier

Post  kerabo on Sun Dec 05, 2010 6:53 pm

I have done mine but its been a while now. I am pretty sure you join 2 of you original wires together and use the other one alone. I will do some checking and get back

ken
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Rectifier

Post  MoscowFlyer on Sun Dec 05, 2010 8:52 pm

Hi, I have a diagram of how you wire the new rectifier on the 2T. It shows the earth going to the +, the pin opposite is left bare with no wire going to it. The black wire from the magneto goes to the one marked AC. then the red wire from the magneto goes to the one oposite then comes off again and to the headlamp . Mike Cool
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wiring diagram

Post  dr-sidevalve on Sun Dec 05, 2010 9:02 pm


Heres a picture of the 3 pole rectifier in situ

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2T rectification

Post  dr-sidevalve on Sun Dec 05, 2010 9:09 pm

Thanks Mike. So its a case of using only use 3 of the 4 terminals . Very Happy

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solid state rectifier

Post  dr-sidevalve on Sun Dec 05, 2010 9:17 pm

[url=https://servimg.com/image_preview.php?i=8&u=15949299][/ur

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Rectifier

Post  MoscowFlyer on Mon Dec 06, 2010 9:18 am

Let us know if it works. I tryed wiring my 1H that way and it wouldn't work, each bike must be different. Mike Cool
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Electric puzzle for you

Post  tbird on Fri Mar 08, 2013 4:10 pm

Hi Mike (Moscow Flyer)
Going back to the 2T solid state rectifier, did you find out the correct wiring for it .???
I have just wired my 89 up and left the one terminal free but that doesn't look right to me.
I haven't got to starting it up yet, the lights and horn work but don't know if the engine will go.
Your comments please.

Graham (tbird)
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Post  kerabo on Fri Mar 08, 2013 6:19 pm

From memory you need to earth the positive (Through the center fixing is good)

OUT is your DC to the battery or switch
Alternator terminals just connect to your two from your alternator

I cant read the colours so cant put it in writing

Thats how my falcon was wired

Ken
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Post  tbird on Sat Mar 09, 2013 8:41 am

Hi Ken
Yes I wired my Falcon with a solid state OK but the 89 2T is different because of the Villiers coils.
If you look at the Diagram only the light green goes from the old rectifier up to the switch, And they have not drawn the earth from the securing bolt to earth, so is it the switch that determines the battery charge.?? if so perhaps you don't need the other terminal.
Can someone clarify this for me.???

Confused Graham (tbird) Shocked Sad
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Post  MoscowFlyer on Sat Mar 09, 2013 9:45 am

Hi Graham, I've looked high and low for that diagram, but can I find it? Twisted Evil I've drawn one from the description I gave above. It was sent from a member who owned an Cruiser 89, when I tried to wire my Cruiser 75 that way, it didn't work, so I just kept swapping the wires around till it did work, no harm was done. Mike





Last edited by MoscowFlyer on Tue Mar 12, 2013 7:46 am; edited 2 times in total
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Post  kerabo on Sat Mar 09, 2013 12:10 pm

The terminal that shows 2 wires at the rectifier is AC direct lighting. So long as that dont go to the battery. as it needs DC

Ken
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Lighting

Post  MoscowFlyer on Sat Mar 09, 2013 1:20 pm

Hi Ken, the question now is, does the 89 have direct lighting? On the diagram I put up, the headlight switch only shows OFF, L, and H.??? Mike
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Post  kerabo on Sat Mar 09, 2013 1:29 pm

The way I read the second diagram mike when 1 and 2 are connected at the switch the headland is direct Ken
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Post  tbird on Sat Mar 09, 2013 1:32 pm

I am having second thoughts on this.
As you know I converted my Turbo Twin 4T engine to 12 Volts with an RM21 Lucas Alternator, I also fitted a Paul Goff Regulator/ Rectifier which made the circuit very simple.(hopefully you will see the diagram in this post.)
Do you think this could work with the 89.????
Again your comments please.

Graham (tbird) [img][/img][img][/img]


Last edited by tbird on Sat Mar 09, 2013 1:51 pm; edited 1 time in total
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Post  tbird on Sat Mar 09, 2013 1:47 pm

Try again.
Graham[img][/img]
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Post  MoscowFlyer on Sat Mar 09, 2013 7:02 pm

Hi Graham, It's getting to complicated for me.

Ken, I don't think 1 and 2 connect on the switch, if it only moves twice it wont get as far as 1 and 2, but I could be wrong? Mike
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Post  kerabo on Sat Mar 09, 2013 7:06 pm

Hi Mike

it shows it connected in the second picture of the switch contacts. They work in strange ways. If not there would be no point in taking a wire to the switch from the rectifier/alternator

Regards Ken
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Post  MoscowFlyer on Sat Mar 09, 2013 9:09 pm

Hi Ken, I thought this was interesting, page 38 is the wiring diagram I put up. Mike

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Post  tbird on Sun Mar 10, 2013 3:03 pm

Mike
The diagram you put up is using the other type of switch, the switch I have in my 89 diagram is as you will see from Dr-Sidevalve diagram.
Do I understand that with no lights and with side light the charging is done via the Black & Light Green from the geny, and with headlight on the full charge is from the Black & Violet .????
But in both instances it looks like A/C and not D/C that is used, when I thought that charging was done with D/C volts (which should come from the other terminal on the solid state rectifier) but we are not using that terminal.
HELP!
There must be some boffin out there that can answer this problem.

Frustrated Rolling Eyes Neutral Graham (tbird)
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Post  mike Sayer on Sun Mar 10, 2013 7:43 pm

Hi all, yes, if there is a boffin out there (& I`m sure there will be), I will be watching this space as I will be making up a new wiring loom for the Cruiser 84 I have put the 2T engine in.
Mike.

PS Graham, do you think it would be sensible to go 12V at this time? Rolling Eyes
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Post  kerabo on Sun Mar 10, 2013 7:46 pm

I have lost the thread here a little what exactly are we trying to solve

Regards Ken
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Post  MoscowFlyer on Sun Mar 10, 2013 8:49 pm

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Cruiser 89 rectifier

Post  FB vincent on Sun Mar 10, 2013 9:03 pm

kerabo wrote:I have lost the thread here a little what exactly are we trying to solve

Regards Ken

Ken, the issue is that for a full wave rectifier you need to have two AC inputs from the generator/alternator, then a positive output (to the frame) plus a negative to the switch/headlamp. Modern rectifiers are not earthed through the body or mounting bolt. The standard 2T Cruiser 89 wiring diagram does not identify the two inputs from the Villiers generator, unlike the Falcon 87 wiring diagram with Wipac alternator.

I am not an electrical engineer, so I am watching this discussion from the sidelines.

However, my Cruiser 89 with 4T engine has the high output generator where the HT ignition coils are powered from the battery, and I have replaced the two Lucas rectifiers with modern equivalents with beneficial results, but in this case the two AC inputs were clearly identified from the wiring diagram.

There must be a 2T guru out there who can give sensible advice!

Sandy Ross


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Post  tbird on Mon Mar 11, 2013 8:26 am

Sandy
I would like to see a diagram of your 4T with the high output geny please, could you e-mail me a copy.(with the solid state rectifiers)
If you remember in the Directory I moded my Turbo Twin 4T to high output geny and went to coil ignition, that worked OK but I then went to 12 Volt and did the RM21 alternator mod which is even better. I might have to go the same way with the 89 as at the moment I have not found a spark from the villiers geny (the flywheel might need remagnetising as it's been a while since it was on the road).See my diagram above.
I think you will find that the solid state rectifiers still do need an earth to the body. I usually take the earth contact round and put it under the fixing bolt.

Graham (tbird) Shocked

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