Scooterotica

Can anyone who has a CHT sensor fitted UNDER THEIR SPARK PLUG please post up their temp readings range.

Only interested in readings from sensors under the spark plug or on top of the spark plug. not on a fin. but if you do have a sensor fitted to a fin please post those readings too.

low eighties on a 70mph constant, if it climbs any higher i hit the thumb choke n it reduces nicely,, round town low sixties, cowls fitted and normal lammy head,, rapido with remote reed 35tmx open nk race

Under plug tuned imola around town 290-320. 55-60 380 all out 420 (choke on sharpish)

tarmac tickler wrote:low eighties on a 70mph constant, if it climbs any higher i hit the thumb choke n it reduces nicely,, round town low sixties, cowls fitted and normal lammy head,, rapido with remote reed 35tmx open nk race

where is the sensor?

psychedelicropcircle wrote:Under plug tuned imola around town 290-320. 55-60 380 all out 420 (choke on sharpish)

same as my readings under the plug. only im easing off or applying choke at 380F lol

290F is 143C - 320F is 160C. 380F is 193C 420F is 215C

Running Temp on my TS1
260-270f on a b9es plug under plug censor
35mm TMX
300 main
20 pilot
58 needle 2nd from top
no6 slide
nk road pipe
Kytronic retarder

Mines on top of the plug but even when cold the sip speedo temp reads 130 deg but rises to 190ish maybe upto 205 deg around town , if I could reset the base line temp then maybe I could give a proper reading ive no idea how to reset the speedo or even if its possible I did disconnect it for 2 days in a hope it would revert to factory settings but alas no !

290-320f. Stays around 320 for those hot day light to light rides. Anything over 320 and the bike starts to feel like it needs a break and cool down.

My question is does anyone else have issue with their plug coming loose? I had to remove the plug crush washer so it would thread to the correct depth with the temp ring. Now I have to tighten it almost every ride. SIP set up on a RT top end.

I take some meat out of the head from around the plug so that the shoulder of the sensor ring can sit down properly, there isn't enough room in the standard plug seat recess for the ring to fit into on most Lambretta heads.

I did that with my head too.

funny thing is that I ran a temp gauge I bought of Darrell T. and now have fit a SIP speedo and its feeler ring.

The one from Darrell read 205 C at full whack but the SIP one is reading 45/50 C less at the same sort of speeds.