funny how things go round / come around

[Steve Lake]

I see on Ebay someone is selling an exhaust system originally fitted to my SRX4 'number 2' which i sold about 3 years ago
now advertising it as 'built for racing' ................erm....not   ( 330116295820 ) sort of put together from the spares box in my workshop, using the siamesed downpipes from a monoshock srx4, and a peashooter predator silencer with a bit of pipe fabrication inbetween.......probably too noisy for scrutineers now......still, it does look a bit teccy with the lambda sensor still on it, that i fitted to test a gas analyser i was making at the time...i'm sure that is going to confuse someone

pip pip

[andy230]

Hi Steve-

I saw that!  And thought it was yours!  My mate (to whom you sold the bike) put my old standard can on No2, and punted the pipe on.  He then punted the bike on (to another mate of mine).

I recognised it from the stay holding the can on, it had a little notch out of the top....

speak soon

a

[Steve H]

Steve, How did the gas analyser work out ?. Was it a narrow or wideband. I'm toying with building something fairly simple at the moment.

[Steve Lake]

erm.....yes steve......it did work....i just wanted to prove a point, that you don't have to spend a fortune to get a bit of kit that can basically tell you how much (or how little ) oxygen there is in the exhaust, and thus how the mixture/ignition is working. The lambda sensor puts out between 1 volt and 1.9 volts if my memory serves me correctly, and basically you run this into a resistor ladder network (analogue to digital) output that to a LED array driver and onto 12 LED's in a sort of orange green red setup, such that the 3 green LED's are the optimum setting... you do need a VERY constant level supply voltage, the easiest way I found was to use a PP9 battery rather than the bike electrics, the whole caboodle didn't use much power (after i started using low current LED's!) i suppose the whole lot cost about 40 quid, but the sensor accounted for £25!
pip pip