RFguy

These are the better ones- again - photoelectric $130. but dual sensor so they know the air density etc also. comes in various gas falvours. https://au.mouser.com/datasheet/2/447/KEM_SE0213_QGC-3317038.pdf

So, something to keep in mind. Most of the "CO" sensors at the low end are actually "air quality monitoring " sensors CO is just one of the detected gases.... you need to spend more money to get a pure gas sensor. but of course there shoul;d be only air in your cabin. cheap one - dual gas https://www.winsen-sensor.com/sensors/mems-gas-sensor/gm702b.html https://www.winsen-sensor.com/product/gm-702b.html for the new solid polymer sensors https://www.sgxsensortech.com/solid-polymer-sensors Here is an affordable one USD15 https://www.sgxsensortech.com/sensor/mics-4514 https://www.sgxsensortech.com/uploads/f_note/0278_Datasheet-MiCS-4514-rev-16.pdf amongst https://www.winsen-sensor.com/co-sensor/

CO2 sorry got mixed up LOL. I'm tired.

given that the atmospheric CO2 concentration is about 400ppm, I'm guessing it is displaying concentration above 400ppm. or a complete BS reading.... still, an increasing number is all that's really required. there should be no CO2 in the cabin. Newer sensors are instant on. but the sensors, even wholesale in large quantity are USD$12-20, which isnt going to sell at BWS for less than $100 for that sort.

but "you guys" don't listen to the cricket

Hi Nev, thanks for the comments . I got tossed in the jabiru 90deg to the ground once, that wasnt fun. Some people would say what do you put yourself through it ? Well, I beleive all good pilots are compelled to confront their demons. It's no fun though. And Young with its rising ground around the AD and hills is full of demons. If my adrelaline hadnt been so high, I would have had another go from the other direction, different hills affect the other end. But I'd need ot be on my game when climbing out through the demons at the other end.

Went flying yesterday, while only 10 kts on the ground from the east , much more once in the air , needed 10 degrees to hold off the drift ..... Got to destination , a known bumpy AD to shoot a few Xwinds ,AWIS said 11 kts and pure Xwind... this AD is in a shallow valley..... and I was so shaken up on final on both passes due to very uncomfortable turbulence I found had no appetite for putting the plane down once over the threshold. Did two. So I went back home. and listened to another airplane go into the same AD and go-around twice and then choose the opposite direction..... I guess they got down. landing in same Xwind component but at Cowra approaches are smooth if when windy and landing in same Xwind like it was a non event....perfect nice 10 deg flap flare and landing. was demonstration grade ! This was a specific flavour of turbulence I have encountered rarely There really are different flavours of turbulence, aren't there.... Some more uncomfortable than others. Clearly, more work required more often. and I was quite surprised to be so shaken up in the circuit that it severely affected my appetite for landing. It's not scary. the airplane is not going to break and the airplane is not goign to get tossed upsidedown. It's just very uncomfortable, creating adrelaline, anxietry etc etc ***Does a human body get better with this when it's of a certain flavour ??????? . anxiety levels were still running after back landing at CWR.

so, you'll need to solder up a few wires. battery will probably need to stay. older ones are heater/catalyst type, they have lifespan the way these systems get LONG lifespan is they usually only sample a few times per hour. I have a CO2 monitor that has a lifespan of 500 hours and provides twice a minute updates. Newer sensors are either micro versions of same with long life sensors, or photometry type that measure absorption spectra. I wonder which type this is.

also, it might not function correctly without th ebattery installed- the battery might need to stay, so we also generate a power off closure on power down.

on the switch is one side of the switch at ground , or battery , or neither ? detemrine with a multimeter what we need to do is put a small circuit in there to generate a contact closure on power up If you push the ON button as the power is applied, and hold for 5 seconds, does it turn on ? Or do you have to plug in, wait x seconds, then hold the power button down ?

how do you usually turn it on ?

Without an ADF radio, how are you going to listen to the cricket ? For nav. There are plenty of ADF nav beacons around. and they are easy to use. but if you have a suite of dual GPS systems + VOR, no practical need

spam

yes, fuel flow *may* edge up due to square law related losses. and and volumetric / airflow behaviour + efficiency has its own curves for each engine system with RPM/ MP

the only practical way the 3300 makes >115hp is with a pitch adjustable prop. then it is fantasic, can run it down at 2400-2600 etc