Info on Wideband air fuel ratio meter

Twangled your powervalve grommit in your woodruff key? ask someone how to fix it here
Post Reply
fred
Oil Injector
Posts: 916
Joined: Sat Mar 22, 2008 5:42 pm
Location: retford n,nott`s working in cotswolds
Contact:

Info on Wideband air fuel ratio meter

Post by fred » Sat May 04, 2019 9:16 pm

Would one work on a 2 stroke for testing, I am looking in to possibly buying one with a lambda sensor for setting up other bikes ( I have 8 now, non are standard). I hope every one is enjoying the long weekend.

DougB
Oil Injector
Posts: 570
Joined: Thu Dec 12, 2013 9:58 pm
Location: York

Re: Info on Wideband air fuel ratio meter

Post by DougB » Sat May 04, 2019 10:22 pm

Hi Fred. Not 100% sure the difference between wide and narrowband gauges but.. I go to Mick Abbey regularly to use his dyno (great bloke & service, can't recommend him enough). His setup uses a lambda probe (some sort of heated car lambda I think) to a sensor box which give an instant display, and also feeds that into the dyno software to get a graph readout. It doesn't seem to mind 2 stroke even on my race TZR running A747.

fred
Oil Injector
Posts: 916
Joined: Sat Mar 22, 2008 5:42 pm
Location: retford n,nott`s working in cotswolds
Contact:

Re: Info on Wideband air fuel ratio meter

Post by fred » Sat May 04, 2019 10:52 pm

Yes it is a heated sensor. Just trawling the net now for info

User avatar
scooble
Premix Junkie
Posts: 1544
Joined: Thu Jul 27, 2006 12:47 pm
Location: West Sussex
Contact:

Re: Info on Wideband air fuel ratio meter

Post by scooble » Sun May 05, 2019 2:19 pm

I have a wide band Koso sensor fitted to my KR.
Its a heated sensor and does load the battery quite heavily, so wouldn't be great on a total loss system.
Also with two strokes, they recommend fitting a probe shroud that masks the sensor from the oily residue you often get in two stroke exhausts

fred
Oil Injector
Posts: 916
Joined: Sat Mar 22, 2008 5:42 pm
Location: retford n,nott`s working in cotswolds
Contact:

Re: Info on Wideband air fuel ratio meter

Post by fred » Sun May 05, 2019 3:02 pm

That's interesting Tricia, would the shroud just be curved round the leading side of the sensor. I have read on a 2 stroke to weld on the threaded boss in the last segment of the downpipe before the first cone.

User avatar
scooble
Premix Junkie
Posts: 1544
Joined: Thu Jul 27, 2006 12:47 pm
Location: West Sussex
Contact:

Re: Info on Wideband air fuel ratio meter

Post by scooble » Sun May 05, 2019 8:04 pm

According to Koso, it needs to be welded on I think about 20cm from the exhaust port.
The shroud looks like this and the 'hole' needs to be facing downstream;
https://bikemanperformance.com/snowmobi ... apter.html

Post Reply