Temp Question
#17
When I go back to factory settings, should I use the stock plug or the colder one? And again thanks for all of the help in pointing me in the correct direction.
#19
No its not a turbo. I will let you know what plug I have on it. The colder one, tomorrow.
#21
Tech Regular
I have the same engine as you do my friend. I'm new to the Losi but I'm good at tuning since I'm kinda the "engine guy" and sucks at everything else.
I can tell you that 4 min on a tank is something way wrong.
I'm still in the late stages of break in (half a gallon) and I still run a bit rich but I get 7.5 min with this engine. So if you get 4 min you are messing around bad.
I have also noticed that the 2.5 turn on both needles is not always too rich. I went out to my workshop and measured them for you right now.
I have LSN @ 3.0 turns out from closed
and the HSN @ 3.5 turns out from closed
Those settings give me exactly 7.5 min on a very very tight track with O'Donnell and Byrons GenII 25%
If you HAVE to know about temps I get around 230 to 240 on a hot summer evening with 86 degrees ambient and a lot of humidity.
I can tell you that 4 min on a tank is something way wrong.
I'm still in the late stages of break in (half a gallon) and I still run a bit rich but I get 7.5 min with this engine. So if you get 4 min you are messing around bad.
I have also noticed that the 2.5 turn on both needles is not always too rich. I went out to my workshop and measured them for you right now.
I have LSN @ 3.0 turns out from closed
and the HSN @ 3.5 turns out from closed
Those settings give me exactly 7.5 min on a very very tight track with O'Donnell and Byrons GenII 25%
If you HAVE to know about temps I get around 230 to 240 on a hot summer evening with 86 degrees ambient and a lot of humidity.
#22
Yes, I agree. 2 1/2 is not always to rich. With the stock plug I think I was around 3 1/2 or so on HSN, and on low I didn't touch it to much. But the plug I went to is an O.S. R5. S I guess I will put it back to factory, and put the stock plug in. As far as temps. outside its been hot as heck in CO. But will give it a try.
#23
Tech Regular
...and remember, if it is hot outside you have to LEAN it out a little bit to compensate for the hotter air.
#24
When I get to go out and try it, I'll just see how it runs. Then I'll check temps. But I didn't know about the leaning it for warmer air. I thought you had to richen for warmer outside temps, and lean it for cooler temps outside.
#25
Just got back from trying what you guys said. And from factory it hall a$$. But gets hot as hell quick. I got the temps down to the 250s, but there is so much fuel going through I didn't much of a run. The next one ran it for tune and performance. Then temp, and it was 267, so started to richen it. To bring temps down, and ran like poo.
#26
Tech Regular
...and there you go again my friend, starting to tune by temp .
If it is stable at 267 let it stay there AS LONG at is has visible smoke and run good.
A too lean engine will bog down and not run good.
A too rich engine will splutter and struggle and not run good.
#27
At first I didn't tune it by temp. I tuned it to hall, and it did. But hot. Should I richen it a little bit to save the engine. I have limited funds. I do not want to blow it up. Just want to race, and last a heat.
#29
I would say that 250 to 267 would be considered hot to me. I have never had an engine get up to this temp so quick. I mean when I get to where I like it, and its warmed up, I temp it. And that consisted of maybe 1 to 2 min of short blips of the throttle to get it to "temp." Before I can do any adjusting to get it to run better. Then I temp it and to me its hot. Or what is a good rule of hot being to hot. I mean there is smoke, almost through the whole power band. I like how quick it is at 260. But that is with the body off. Just worried how much hotter it will get under race conditions, with the body on.