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Messages - listeroil

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Lister Based Generators / Re: 8-1 START-O-MATIC
« on: June 29, 2019, 06:21:50 PM »
Hi Buryan
Believe it or not Cornwall about 800 meters from the Eden project.

Lister Based Generators / Re: 8-1 START-O-MATIC
« on: June 23, 2019, 07:05:46 PM »
I used  constantan wire otherwise known as copper nickel 56/44 or eurica wire. I used the same diameter as the original.  I think the resistor shown in the picture was 12 ohms and used 0.8mm wire.  It is available in small amounts from.


This is the wire I used:-

125g 0.8mm Copper Nickel Wire
Ref: CN0800-125
Price: 11.05 Exc VAT (13.26 Inc 20% VAT)
125 gram reel of 0.80mm 21 SWG Bare Copper Nickel Wire (Copper Nickel = Constantan = Eureka)
Data: approx: 0.975 ohms per metre, 125g = approx 28 metres

This is enough to do 2 resistors.

They also sell:-
56/44 copper/nickel
This might be a better choice they didnt sell this when I rewound my resistor about 12 years ago.


Lister Based Generators / Re: 8-1 START-O-MATIC
« on: June 23, 2019, 12:19:25 PM »
Hi Butyan
I live in the UK and would be prepared to give it a go.  Whether it can be rebuilt depends on the condition of the parts you have. A lot of the bits are bullet proof and never wear out.  The main contactor contacts are the real problem they are unobtainable.  If yours are in good nick it should be possible to rebuild it.  Can you post pictures of all your bits especially the main contactor.

I have rebuilt 2 of these control boxes in the past heres some pictures of the last one I rebuilt 6 years ago, and a picture of a top box with a rewound resistor that I rewound.

Lister Based Generators / Re: Lister sr1 Genny
« on: May 15, 2019, 04:24:33 PM »

Is there a top box on this generator?  If so please take a picture of the top box internals.  In your first picture I can just make out a commutator that will be the DC power to the field windings.  If you are lucky it might even be a set of starter windings.  We need more clearer pictures to be able to decipher what you got.


Lister Based Generators / Re: cs startomatic belts
« on: March 14, 2019, 02:55:43 PM »
Startomatic belts are B section.
B105 is the belt you need available here:-


11 each inc VAT free delivery.


Generators / Re: 4.5kva output
« on: February 05, 2019, 11:56:26 PM »
Heres a picture

Generators / Re: 4.5kva output
« on: February 04, 2019, 07:44:25 PM »
It says PF .1 so does that make KW and KVA the same?


Generators / Re: 4.5kva output
« on: February 03, 2019, 09:38:15 PM »
Just to be pedantic, although it does make a difference in this case, Both 4,5 KVA and 4.5 KW have been quoted for the same machine here.

You make a good point so I checked up my Lister manual and brochure for this particular unit and in all the publications it states 4.5KW.  Then I went and checked the brass spec plate on the actual BKB generator and it says 4.5 KVA.  I have now checked a few more Lister manuals and some of them say:-
8/1----4.5 KW----4.5KVA----230V----50CYCLES.     
All very confusing Listers seem to reckon KW and KVA are the same when in fact they are not the same. However IMHO KWs is what Lister advertise in there brochures and manuals and they would not state 4.5KW if it couldn't do that.  So I reckon this generator could easily handle the OPs 4.2KW.

Generators / Re: 4.5kva output
« on: February 02, 2019, 06:26:12 PM »
The 8/1 engined Startomatics with the 4.5kw BKB generator are rated for continuous use at 4.5kw.  However they are rated to BS1958 which states that the generator can be run at 10% overload for a period 1 hour in a 12 hour period. This is also true of the engine. They both conform to BS1958 spec. I do have a Lister brochure which gives this information but at the present moment it is buried under a massive pile, when I find it I will post a picture.



The AC brush connections are the ones that go to the slip rings.


Sorry to butt in at this late stage but I have read through all the pages of this post and think you need to take a fresh look at your problem.  I have been running these for 18 years and have rebuilt a few and this is a simple way of checking if your windings are ok.

When you start a generator with one of these dual function alternators you feed 24 volts into start windings which also feeds the main field winding as well which is the same as flashing the winding.  So no need to flash the aux winding for any reason on these units.
What I would suggest is that you connect a 100 watt 240v incandescent light bulb directly to the 2 AC brush connections in the generator.  Then start the engine and see what happens. The bulb should light up and stay lit when starter is released.

When I rebuild mine I do this before connecting the generator to the engine and use the starter function to spin the generator up.  What happens is that as the revs increase the light get brighter and brighter as the revs build up.  When I disconnect the start connection the bulb looses a bit of brightness but stays lit until the generator run down.  If yours does this the windings are okay and your problem lies elsewhere.

Hi Listeroil, perhaps you can explain to me how these are wound as tight as they are without any insulation. Did they acid etch them or coat them with something to to stop them from shorting between the windings?

I did not consider insulation just wound it up as tight as I could and used it. It worked okay.  However it makes sense to use insulated so I checked the website and they do sell oxidised wire and that appears to be insulated.One thing I will say is that all the resistors in Lister top boxes that I have seen have black windings and also a brand new one that I bought years ago.  That one cost me 50 which is why next time I needed one I rewound it instead of being ripped off by Sleeman and Hawkins


To Jonnymac

On the charging problem, I've found the problem, the resistor is damaged. Any ideas on repair/replacement? Could i re wind it with resistor wire?

I have rewound a few of these resistors in the past and buy the wire from these people  https://wires.co.uk   This is the wire that I used  Bare Constantan.

50g 0.71mm Copper Nickel Wire
Ref: CN0710-050
Price: 5.44 Exc VAT (6.53 Inc 20% VAT)
50 gram reel of 0.71mm 22 SWG Bare Copper Nickel Wire (Copper Nickel = Constantan = Eureka)
Data: approx: 1.24 ohms per metre, 50g = approx 14 metres

This was correct for the resistor that I needed yours will probably be different. What I did is count the number of turns. Measured the diameter of the resistor calculate the circumference the multiply that by the number of turns to give the length of the wire needed.  In my case it worked out to 8 meters of wire needed for 115 turns to give me the 12 ohms required.  Also you need to measure the diameter of the actual resistance wire.

Nickel Chrome resistance wire is also available but would have only filled about half the resistor. But It might have been used in your case.  This why you need to do a bit of maths so you don't get the wrong wire.

50g 0.71mm Nickel Chrome Wire
Ref: NC0710-050
Price: 6.75 Exc VAT (8.10 Inc 20% VAT)
0.710mm 22 SWG Bare Nickel Chrome Wire (also known as Nichrome Wire / Hot Wire Cutter / Foam Cutter / Heater Wire / Element Wire)
Data: approx 2.7 ohms per metre, 50 gram = approx 15 metre



You do not say where you live in your profile but if you live in the UK.
 Westwood cylinder liners might have just what you need.
Part No.              Inside Diameter       Outside Diameter         Length      
                           MM    Inch              MM       Inch             MM            Inch    
WCL 40F      114.30   4.500   120.73   4.753   250.83   9.875   



Original Lister Cs Engines / Re: Lister CS 6/1 and 8/1
« on: January 05, 2018, 11:25:00 AM »
Another difference is the governor weights. They are lighter on the 8/1 engine.


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