Toppy, hope you're correct, as that is exactly what I have read and just drilled some scrap exhausts to fit the sensors. The pipes were fitted and the positions marked off for the sensors. Hopefully they are not too far back that they never get hot enough, as I feel the distance recommendation was for under bonnet fitting not sticking out in the breeze.
Innovate afr guage
- Thread starter seattle##gs
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toppy said:
They only use that amount of power on initial start up. Once the exhaust is good and hot, they don't use their internal heater element.
pommie john said:
Just bringing this back up to advise others thinking of trying one of these. I have run mine a few times with it as i said fixed to a length of pipe that slots into the end of the silencer (well they don't really do they :lol: )
It works fine if the length of pipe is long enough (the instructions as i stated before warn against "stubby pipes" ) to short an the sensor detects air from outside the exhaust an gives over lean reading.
They do pull a constant 3amps in use. All my lights are LEDs all wiring is new and as i have an Alton Ekit the alternator is new an more powerful than stock version. I also have one of those colour changing LED voltage monitors not the original type charge warning light. This show much more drain on the electrical system when using AFR an after long enough at low engine speed the 20AH battery is noticeably struggling to start the bike which without the AFR being used it doesn't have a problem at all.
All in all though i can recommend these as i can see by just glancing down what the fueling is like then make changes at see what's happened instead of trying to guess. Just be sure your charge system is ok an maybe don't use lights an AFR together at lower engine speed.
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Just a tidbit of info from Andover Norton in their June Newsletter:
Air/Fuel Ratio Checking
"Andover Norton is starting a project to test Amal’s recommended carburettor settings. The Commando factory settings are over 40 years old and gasoline’s formula has changed in this time. We want to check if the 1970’s data is still accurate. We will use an air/fuel checking kit with two sets of non-standard exhaust pipes. These have been modified to accept a Lamda sensor: a device that precisely measures the air/fuel ratio present in exhaust gases.
The correct mixture of fuel and air is critical to engine performance and durability. The mixture is the 'Air/Fuel Ratio' (AFR). The AFR defines the ratio of air consumed by the engine compared to the amount of fuel. A 'Stoichiometric' AFR has the correct amount of air and fuel to produce a chemically complete combustion event. For petrol engines, the stoichiometric, A/F ratio is 14.7:1. i.e. 14.7 parts of air to one part of fuel. The plan is that the modified exhaust pipes with sensor are fitted to each of our Commandos in turn. The bike’s battery powers a digital display (mounted between the speedo and tacho), that shows the air/fuel ratio when the machine is being ridden with a variety of throttle openings. We hope to have some results next month…"
Cheers,
Thomas
Air/Fuel Ratio Checking
"Andover Norton is starting a project to test Amal’s recommended carburettor settings. The Commando factory settings are over 40 years old and gasoline’s formula has changed in this time. We want to check if the 1970’s data is still accurate. We will use an air/fuel checking kit with two sets of non-standard exhaust pipes. These have been modified to accept a Lamda sensor: a device that precisely measures the air/fuel ratio present in exhaust gases.
The correct mixture of fuel and air is critical to engine performance and durability. The mixture is the 'Air/Fuel Ratio' (AFR). The AFR defines the ratio of air consumed by the engine compared to the amount of fuel. A 'Stoichiometric' AFR has the correct amount of air and fuel to produce a chemically complete combustion event. For petrol engines, the stoichiometric, A/F ratio is 14.7:1. i.e. 14.7 parts of air to one part of fuel. The plan is that the modified exhaust pipes with sensor are fitted to each of our Commandos in turn. The bike’s battery powers a digital display (mounted between the speedo and tacho), that shows the air/fuel ratio when the machine is being ridden with a variety of throttle openings. We hope to have some results next month…"
Cheers,
Thomas
The bung is welded to a a length of pipe that slots into the end of the silencer and is safety wired on the rest of wiring is zip tied to the bike an gauge is taped on to rev counter. It takes few minutes to up it on an comes of in less than an minute but pretty it is not and it is secure though an only as a temporary fitment that can be moved between different bikes.
The pipe with bung for sensor is 33m outside diameter that fits nicely into end of my exhaust (yours maybe different) it goes in about 75mm and about 300mm sticks out (yes its ugly). The bung stops it going further in an a couple of small nuts welded near bung make loops to thread lock wire through an then down and around silencer mounting bolt boss. It has so far stayed on into three figures on speedo an told me more than traditional methods just at a glance. Getting the pipe length long enough to stop air outside the exhaust messing up the reading was bit of trial and error but it is working now an telling me the bike is lean where i thought it was rich on the needle jet so i will lift needles and try again now i have a point of reference.
There are others on the market and this one is definitely far to gigh spec for the bike with many extra outputs for data logging an engine electronic fuel systems of modern vehicles. I bought it as someone else had tired it an said it worked on positive earth electric systems which was something I was thinking could be an issue.
The pipe with bung for sensor is 33m outside diameter that fits nicely into end of my exhaust (yours maybe different) it goes in about 75mm and about 300mm sticks out (yes its ugly). The bung stops it going further in an a couple of small nuts welded near bung make loops to thread lock wire through an then down and around silencer mounting bolt boss. It has so far stayed on into three figures on speedo an told me more than traditional methods just at a glance. Getting the pipe length long enough to stop air outside the exhaust messing up the reading was bit of trial and error but it is working now an telling me the bike is lean where i thought it was rich on the needle jet so i will lift needles and try again now i have a point of reference.
There are others on the market and this one is definitely far to gigh spec for the bike with many extra outputs for data logging an engine electronic fuel systems of modern vehicles. I bought it as someone else had tired it an said it worked on positive earth electric systems which was something I was thinking could be an issue.
jimbo said:I have a used K&N Air/Fuel Ratio Monitor that I would sell for $55 if anyone wants to play with one.
The scale on the display of this one seems narrower than the Innovate one and the sensor on the Innovate one is a commercially available Bosch unit so can be replaced if needed and being Bosch should be reliable.
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