Pictures of your Norton Commandos

TBH it was the on/off 'enrichment' device that I couldn't live with. Suits many, I know, but I just found it a royal PITA....
Pictures of your Norton Commandos
 
TBH it was the on/off 'enrichment' device that I couldn't live with. Suits many, I know, but I just found it a royal PITA....
Yes, I see what you mean. So far I’ve solely started it twice from cold and I then realised the lever could be set halfway or so while it warmed up. Ideally it needs a good bit of fine weather and a run.
 
Yes, I see what you mean. So far I’ve solely started it twice from cold and I then realised the lever could be set halfway or so while it warmed up. Ideally it needs a good bit of fine weather and a run.
When I bought the cable conversion for my MK2 amals on my t140 e I was surprised you could use partial choke with an enricher
I'd assumed it was either on or off
 
When I bought the cable conversion for my MK2 amals on my t140 e I was surprised you could use partial choke with an enricher
I'd assumed it was either on or off
I’ll double check, maybe tomorrow when I’ll be clearing the garage and can get to it.
 
When I bought the cable conversion for my MK2 amals on my t140 e I was surprised you could use partial choke with an enricher
I'd assumed it was either on or off
Yes, of course. Usually full on to start, immediately to 1/2 once it fires up, then as soon as it can take throttle blips without stumbling, lift slides full off.
 
Yes, of course. Usually full on to start, immediately to 1/2 once it fires up, then as soon as it can take throttle blips without stumbling, lift slides full off.
Apologies, but are we at cross purposes here? I thought the discussion was Mikuni/Amal Mk2... Neither of which have 'choke slides' (As opposed to the 'throttle slides'), I believe??
 
Apologies, but are we at cross purposes here? I thought the discussion was Mikuni/Amal Mk2... Neither of which have 'choke slides' (As opposed to the 'throttle slides'), I believe??

The Amal Mk2/Mikuni enrichment plungers can be set between the fully on and fully off positions. Probably easier with the 'choke' cable/lever conversion.
 
The Amal Mk2/Mikuni enrichment plungers can be set between the fully on and fully off positions. Probably easier with the 'choke' cable/lever conversion.
TBH I was just struggling to understand how you could introduce variables in a system which appeared to be either: 'Hole open' or: 'Hole closed'.... That's all :)
 
The Amal Mk2/Mikuni enrichment plungers can be set between the fully on and fully off positions. Probably easier with the 'choke' cable/lever conversion.
I have two theories on this
I'd always thought that changing from a lever operated plunger IE either on or off to a cable have you infinite adjustment at the plungers and so you incrementally open and close them
As an example my t140 e would start and rev to 3500rpm with the enrichment lever on
If you turned it off before the engine was warm the engine would just cut dead there was nothing in between
When I fitted the cable conversion plungers you could start the engine and drop the revs to 1200 rpm or so and ride off
Don't forget this is twin carb setup not a single
Second theory
So I am thinking if the two cables weren't perfectly set one plunger could be lifting off the seat before the other and vice versa
So when I was closing my cable operated plungers one was closing before the other and giving me more control?
It'd be interesting to hear from someone with an enricher type carburettor that has changed from a lever to cable operation?
 
The Amal Mk2/Mikuni enrichment plungers can be set between the fully on and fully off positions. Probably easier with the 'choke' cable/lever conversion.
Is it possible without the choke cable conversion?
 
Is it possible without the choke cable conversion?


Setting the lever between ON and OFF is possible on the Mikuni VM although it can be a bit of a juggling act while riding...
ON...
Pictures of your Norton Commandos

...Mid...
Pictures of your Norton Commandos

...OFF
Pictures of your Norton Commandos


...when there are three of them...
Pictures of your Norton Commandos


...although I would normally set the centre carb lever off before riding and use the outer two as the plunger pin on the RH side can be pushed down (off) easily enough without looking and my T160 warms up pretty quickly.
 
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Setting the lever between ON and OFF is possible on the Mikuni VM although it can be a bit of a juggling act while riding...
ON...
Pictures of your Norton Commandos

...Mid...
Pictures of your Norton Commandos

...OFF
Pictures of your Norton Commandos


...when there are three of them...
Pictures of your Norton Commandos


...although I would normally set the centre carb lever off before riding and use the outer two as the plunger pin on the RH side can be pushed down (off) easily enough without looking and my T160 warms up pretty quickly.
I have the same setup on my t160 only with a t150 date box
As a side note my t160 will not start with the the throttle closed and the enrichers full on
I have to open the throttle as I press the starter button
As it warms up I turn the centre lever off first then the two outside carbs
The bike runs extremely well so I've never investigated
 
I have the same setup on my t160 only with a t150 date box
As a side note my t160 will not start with the the throttle closed and the enrichers full on
I have to open the throttle as I press the starter button

The Mikuni enrichener can be too rich in certain circumstances (warmer weather etc.) and I have to close the enricheners after two to three failed (usually electric) starting attempts after which it normally starts immediately and the enricheners can be opened again either partly, fully or not all at the same setting (so centre off, outers on, or 'mid', etc.).

The Commando VM can also be very rich for starting.
https://www.accessnorton.com/NortonCommando/mikuni-starter-jets.13888/
 
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