A cheap cht gauge

[mnpes]

the afr shows up at all speeds in every gear how the mixture is burning ~ you wont seize up with a rich mixture ~ only a weak one

most of the analogue instruments are not designed for the severe vibration a lambretta pulses out .... so dont last long ~ or the needle swings :bouncing: :bouncing: :bouncing:

digital is the way to go ~ with the added safety of alarm contacts ~ which can be connected to a horn - light or if you have lottsa money the solenoid power-jet

these instruments tell you how the combustion is doing ~ not if you have a ring peg ready to pop out

Lovely to have an AFR on your bike, but the only one I'm aware of sits on a dyno and needs a compressor to aid its function.[/quote]


not so my friend ~ i have a lambda sensor fitted in my exhaust system & a digital readout (from a volkswagon golf) on board )

[mnpes]

mr.bee does an air fuel ratio set-up + fitting brackets

as for running temperatures of a cht ~ they differ as analogue gauges are not too accurate ~ 150-200 okay ~ have your fingers on the clutch anything above preferably stop b 4 then

[nelson pk]

Agree with digital being far more accurate and durable. I personally wouldn't go for analogue as its more difficult to see while your driving although they do like nice!

[coaster]

Had one for a few years now bought off these guys and its never failed me. Bargain at about £30.00 all in http://www.skydrive.co.uk/products.asp?cat=59

I just took delivery of one this morning, ordered on line yesterday and delivered in less than 24 hours. Prices have gone up though, mine came to £40 including postage.

I decided to test its accuracy by dipping the plug sensor into a boiling kettle and the gauge went to 100 degrees within about 10 seconds and stayed there, so I'd say it's bang on given that I live at sea level. I then fitted it to the scoot temporarily with the wire and gauge taped in place and took it for a spin. So far I've found the needle to be very steady despite being loosely fitted and was reading 125 degrees steady as a rock on tickover. The odd thing though is the my EGT have all dropped dramatically which might be down to changing the plug at the same time (an annoying missfire has also gone). Very high winds stopped me from further testing

[Monty]

My egt had been getting a bit erratic, It was the cheap one of flebay so was beginning to regret buying it, it seemed to be reading higher and higher each time I rode the ruddy thing. Checked all the connections and removed the sensor no change. I was using the Wassel DC kit without a battery and in the end fitted one, with an ignition switch to isolate everything when off and it now seems to be more stable. Gives a reading as soon as the ignition is turned on and is the same when running. I have run the Wassel kits on several scooters without a battery but I'm leaning to-wards using one as it does solve the slight dimming on tick over and I'm now looking at other goodies

[WINTERMODEL150]

Hi,my mates bike reads anywhere between 180/230 degrees depending how he thrashes it,the faster he goes the hotter it gets,its never seized and its a digital gauge, i hear a 2 stroke will seize at anything over 250 degrees but not sure where i heard this from maybe someone can correct me on this

Dean

[Lamaddict]

Hi,my mates bike reads anywhere between 180/230 degrees depending how he thrashes it,the faster he goes the hotter it gets,its never seized and its a digital gauge, i hear a 2 stroke will seize at anything over 250 degrees but not sure where i heard this from maybe someone can correct me on this

Dean

That's about right. I've stopped a seize by keeping an eye on the CHT gauge, it was only mid throttle I accelerated, putting more petrol in cooled it down but it's a tricky thing to do and having the confidence to do it.

[coaster]

I was using the Wassel DC kit without a battery and in the end fitted one, with an ignition switch to isolate everything when off and it now seems to be more stable. Gives a reading as soon as the ignition is turned on and is the same when running.

I also have the Wassel DC conversion with a battery, seems pointless without one tbh, stable electrics, mobile phone charging without the engine running, lights that stay on when the engine cuts out, a proper horn to name just a few of the advantages

[coaster]

My egt had been getting a bit erratic, It was the cheap one of flebay so was beginning to regret buying it, it seemed to be reading higher and higher each time I rode the ruddy thing. Checked all the connections and removed the sensor no change. I was using the Wassel DC kit without a battery and in the end fitted one, with an ignition switch to isolate everything when off and it now seems to be more stable. Gives a reading as soon as the ignition is turned on and is the same when running. I have run the Wassel kits on several scooters without a battery but I'm leaning to-wards using one as it does solve the slight dimming on tick over and I'm now looking at other goodies

Thinking about this, is your gauge a digital or analogue type? my analogue (dial type) gauge doesn't have an external electrical supply. It must have an internal battery and is on all the time. I don't know about the digital ones though.

[Monty]

As you know I'm a big fan of the Wassel DC conversion but Iv always done it without a battery, though I had to fit a capacitor. I had one guy convinced that my scooter had to have a battery stashed away someplace as you can not have DC without one :wtf: Had a great horn and good lights and digital speedo but the EGT was all over the place. I had comments that the gauge in question was crap or the sender was and was beginning to suspect it was 30 quid down the drain, yes buy cheap buy twice. Anyway I decided to fit an ignition switch and a small Battery as the series 1 has a very narrow battery tray. Early days but its looking good again. my point was that without a battery a lot of the more fussy DC gauges may or may not work correctly