Norton Dominator 99 problems

Re: Norton Dominator 99 problem?

Hello,

Where should would the zener diode be located? Or regulator? Two wires go to a box (power box?) And two comes out if i remember right.

I have ordered new seat that im going to start fitting in at some point, so i will check what components are under the seat, but it looks like there would not be that much space. Well see.

I was busy at work today so i had no time to fiddle my bike today.

-Kuusisto
 
Re: Norton Dominator 99 problem?

KuusistoNorton said:
Where should would the zener diode be located? Or regulator? Two wires go to a box (power box?) And two comes out if i remember right.
Click to expand...

If it is a Boyer Bransden 'Power Box' or another similar type of combined regulator/rectifier then you don't need the Zener diode.
 
Re: Norton Dominator 99 problem?

L.A.B. said:
KuusistoNorton said:
Where should would the zener diode be located? Or regulator? Two wires go to a box (power box?) And two comes out if i remember right.
Click to expand...

If it is a Boyer Bransden 'Power Box' or another similar type of combined regulator/rectifier then you don't need the Zener diode.
Click to expand...

Hello, i need to check what it is, thanks
 
Re: Norton Dominator 99 problem?

KuusistoNorton said:
Thank you for answering!

Slick, i have single carb fitted to my bike and its an Amal 930 R300. I could remember it was fitted with #320 main and #90 jet needle?(the one that has two small holes in the hex) + velocity stack, dont know which slot needle is atm. Its running good tought, doesnt have any typical symptoms of rich running, plugs seem to be fine imo, atleast not running lean.
Norton Dominator 99 problems
Heres pic, green one i consider as main jet and it was #320 and red one i consider as pilot jet/needle jet and was #90.


-Kuusisto
Click to expand...

You have circled the needle jet in red. The pilot jet is a different part, elsewhere in the carburettor- you should know that by now.

The needle jet cannot be "90." It is very probably 106 size. Are you looking at the number upside down?
 
Re: Norton Dominator 99 problem?

Triton Thrasher said:
KuusistoNorton said:
Thank you for answering!

Slick, i have single carb fitted to my bike and its an Amal 930 R300. I could remember it was fitted with #320 main and #90 jet needle?(the one that has two small holes in the hex) + velocity stack, dont know which slot needle is atm. Its running good tought, doesnt have any typical symptoms of rich running, plugs seem to be fine imo, atleast not running lean.
Norton Dominator 99 problems
Heres pic, green one i consider as main jet and it was #320 and red one i consider as pilot jet/needle jet and was #90.a


-Kuusisto
Click to expand...

You have circled the needle jet in red. The pilot jet is a different part, elsewhere in the carburettor- you should know that by now.

The needle jet cannot be "90." It is very probably 106 size. Are you looking at the number upside down?
Click to expand...

Hello, it might be that i have missed number 1 and read it upside down :lol:
Norton Dominator 99 problems
So that small jet should be pilot jet? I did not have it so do i have older amal carb which has pilot jet brass bushing inside gas circuit.
 
Re: Norton Dominator 99 problem?

KuusistoNorton said:
So that small jet should be pilot jet? I did not have it so do i have older amal carb which has pilot jet brass bushing inside gas circuit.
Click to expand...

Old 4-stroke Concentric Mk1s have the screw-in pilot jet inside the float chamber.
More recent 4-stroke carbs have the pressed-in pilot bush (except for Premiers which have a screw-in jet in the bush location).
You also appear to have old and new jet holders.

http://amalcarb.co.uk/rebuilding-mark-1 ... arburetter

KuusistoNorton said:
i have single carb fitted to my bike and its an Amal 930 R300.
Click to expand...

930/R300(RH) also L301(LH) are basic specification Mk1s.

http://amalcarb.co.uk/rh-30mm-4-stroke- ... ettor.html
Part Number: 930/300

Details for RH 30mm 4 Stroke MK I Carburettor

Comes fitted as standard with:

3 Cutaway Slide
200 Main Jet
106 Needle jet
Pilot Bush

This carburettor is built to a standard specification which provides approximate settings for this bore size and carburettor type. Ideal for anyone who wants to tune their machine themselves.
Click to expand...
 
Re: Norton Dominator 99 problem?

Hello,

Thank you for your answers.

I had only small cap today fiddling the bike, didint get the picture from the power box because its behind batterybox.

But i was running it little bit and checking lights, normally front and back light are dim as hell but soon as i put parking light on then rear light runs really bright and park light does also.

I think my problem is either in the main light bulb/wiring or the high/low beam switch. Of course park light takes less power than main light, but when i got the bike park light and main light was running same time so i changed it as it should be(they run seperately via switch now, and did run bright after change) also i noticed now that my speedo light lights up only when switch is at park light setting and i would remember it has been running with main light aswell, but not anymore.

But i think main light bulp circuit is leaking somewhere, tomorrow i have more time to fiddle it. And also gonna make primary cover oil tight tomorrow in suggested way.

-Kuusisto
 
Re: Norton Dominator 99 problem?

Re; "So that small jet should be pilot jet? I did not have it so do i have older amal carb which has pilot jet brass bushing inside gas circuit."

This could be why you bike does not need the choke.
If my memory serves me correct a single carb only need a 25 pilot jet.
 
Re: Norton Dominator 99 problem?

Hello,

I was looking at belt drive kit for Dominator at Norvil shop and saw that it was meant for standard AMC gearbox. I have laydown gearbox in my bike so do i have any changes fitting belt drive to my bike?

If i do, how much more difficult it would be since i have differend gearbox?
 
Re: Norton Dominator 99 problem?

Hello,

I tried to find the reason why lights are not working propely.

Could you guys tell me you opinion about this.

If i dont have main bulb attached rear light is really bright. Once i attach main bulb everything is dim.

I tried to measure volts and this is what i got:

Norton Dominator 99 problems
This measured between low beam cable and "ground". It gives 13volts.

Norton Dominator 99 problems
Once i attach main bulb to "ground" it lights up and show only 3volts anymore. This is the point when rear light gets dimmer.

Where could the problem be? Low/high beam switch or could it be my power box? Edit: Also noticed now that when i push horn button it also turns all lights off, even when only rear light is on.

-Kuusisto
 
Re: Norton Dominator 99 problem?

texasSlick said:
Your battery is discharged, or bad.

Slick
Click to expand...

Hello, i do not have Battery attached to my bike so, what could it be then? Alternator not producing enough power to keep all this stuff on at the same time? Or could be the box where alternator cables attach to?
 
Re: Norton Dominator 99 problem?

KuusistoNorton said:
Hello,

I tried to find the reason why lights are not working propely.
Could you guys tell me you opinion about this.

If i dont have main bulb attached rear light is really bright. Once i attach main bulb everything is dim.
I tried to measure volts and this is what i got:

This measured between low beam cable and "ground". It gives 13volts.

Once i attach main bulb to "ground" it lights up and show only 3volts anymore. This is the point when rear light gets dimmer.

Where could the problem be? Low/high beam switch or could it be my power box? Edit: Also noticed now that when i push horn button it also turns all lights off, even when only rear light is on.

-Kuusisto
Click to expand...

Alternator or regulator is not able to satisfy electrical load.

I would recommend you install a small (approx. 3 amp hour) battery. The battery will make regulator more efficient, keep your lights bright when idling, and satisfy horn for short blast with minimal dimming of lights.

You should test your electrical circuits by running off a battery and with engine off.... jump from your auto if necessary. Then, if lights seem good, problem is with alternator or regulator as stated above.

Slick
 
Re: Norton Dominator 99 problem?

IIRC, the Dominator is a 6Volt machine Jumping to a car battery (12v) would be damaging.
 
Re: Norton Dominator 99 problem?

Hello,

I am afraid that either one is broken, because when i bought the bike, there was no problems with lights, main light and rear both were bright at idle and so on, now only main lights up dim and rear light is almost shut down.
Norton Dominator 99 problems
Here is pic from my power box.

If i would like to try out my circuits with battery where should i hook it and do i need to disconner something? Should i take alternator wires out from power box and attach battery to the power box and then lights should work fine? If they work, then my alternator is broken, if they are still the same as earlier then i have false in my circuit or broken power box?

Edit: or maybe i should disconnet light wires from power box and attach battery to the light wirings. Alternator is single phase so should i be able measure AC volts? Can i test alternatoe somehow to make sure its not broken.
 
Re: Norton Dominator 99 problem?

Hello,

Thank you for that pdf file, i need to take good look at it.

Since i have magneto ignition and alternator is only for lights and i dont have battery fitted in my bike.

Will the power box act like regulator/rectifier or should i also have zenor diode located somewhere in the circuit? If i should, could that be the reason why im having this problem?

By the way, i believe i have positive earth system.
 
Re: Norton Dominator 99 problem?

KuusistoNorton said:
Will the power box act like regulator/rectifier
Click to expand...

Yes, (if it's working).


KuusistoNorton said:
or should i also have zenor diode located somewhere in the circuit?
Click to expand...

No.
 

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