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Originally Posted by JoeC
(Post 11231007)
I just did a tank pressure test under water and if I blow real hard I get bubbles. That could explain my tuning issue.
curious , is it a mugen ? ;) losi and hot bodies also have some poor sealing lids , they take a little customization also check your exhaust gaskets and header to pipe fit |
It's a serpent 811t truggy. Do you know of a better tank for it? Also if fuel is bad how will it usually make the engine run? BTW thanks for answering my questions.
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Originally Posted by chopper82p
(Post 11227026)
Throw an OS P4 plug in there, dont tighten it with tooo much torque, just in case. Just enough so It will stay in.
Sounds like your LSN is a little rich, start to lean the bottom until you have a stable idle, until that 2 stage is gone and the acceleration feels clean and doesnt bog. Do this on the starter box. Set the high speed at flush with the housing, drive the car around, go full throttle. After that full throttle run for about 1 or 2 seconds, lean it 1/8th of a turn and see if the rpm is higher. Also, lean the hsn until you get smoke up to 3/4 throttle but when you go full throttle, you dont see smoke. Make sure you don't lean it too much though, make sure your temps dont go over 240, if you have a guage. The OS plug will make it idle stronger and may be a little more forgiving on the tune. Its what I use and I love it, prefer it over the nova plugs. Good luck! ;) |
Originally Posted by chopper82p
(Post 11229907)
Low speed first, what I told you should be enough to get you pretty close to a perfect tune.
Low speed on the starter box, high speed tuning after track driving, reset the idle gap to .6mm. If you have any problems, just post here and me or some of the other guys will help you out. |
Originally Posted by kgombe
(Post 11230833)
ok can't wait to see a video.. who cares.... fact remains.. is that YOU cant get it tuned on a Nova plug so what .. big deal... lots of people can't... so you choose a different plug.. SOOO WHHHAAAATTT..
But i can and lots of people can.. but again .. WHO CARES... let it die ... you got your engine running the way you like.. go ahead and run it ... jeeze...
Originally Posted by houston
(Post 11230856)
very fair post chopper , kudos to you bro
if you have a hard time tuning use a c5tgc , much broader tuning window , i would much rather recommend an odonnell plug or werks plug over OS plugs , like i said i know they work but they are not the right "FIT" for novarossi head buttons novarossi head buttons are designed with a combustion bowl that is pretty flat up towards the taper , there is a specific reason for this but in turn it has much less material in the bottom part of the seal area , this is why the short taper plugs will deform the bowl , when you put a long taper back in it is not touching the last 35-40% of the taper towards the bottom . some people try to discredit what i know for there own vendictive reasons which you dont know , i know very well what i am talking about , read through all the threads where racers have followed my advice and never had such an easy time running nitro bro i try my damdest to help , i really do , if it falls on def ears i cant help that and btw , your idling issues are coming from putting a long taper plug back into a deformed hole , the plug does not seal properly anymore , they do not like to idle and will run a little warmer and inconsistent , ive seen it hundreds if not thousands of times perrotto is no dummy , his stuff always runs great and he is a great problem solver I know the OS plug is not meant for the novarossi but when you get an increase in performance, a better, stronger idle, and better tune, there is not much else to say, it resolved my issues. Yes i know you know what you're talking about but my results show p4 works better. Not having idle issues, watch the video tomorrow, I will tune it on both plugs.
Originally Posted by JoeC
(Post 11230962)
I am coming from E buggy and going nitro and you guys have been very helpful but I have another question about tuning. When a motor is idling and it starts to idle higher instead of doing a drop idle does that mean that the bottom is very lean or is there something else going on?
Originally Posted by PERROTTO
(Post 11230970)
Your video proves abosutely nothing. You are flaming out with the with the nova plug because when the engine gets hot enough the taper area in the button expands slightly and causes a leak, because you created a new taper with the OS plug. Never once did i say that it wont run right with the OS plug, but it will never run the same if you attempt to run any other turbo plugs like OD, nova ect. Like I said I have experienced this before more than just a couple times. If you put a new head button on there and go run it agin with your nova plug you will understand.
Originally Posted by savannahmick
(Post 11231312)
I wouldn't put a O.S. plug in your Nova ever it has a different taper/thread and will make button seal bad IF you go back to a Nova or Odonnell plug! I have seen it first hand more than once and you really need to try a OD 77t plug or 97t if it's dry air. I have ran Novarossi for awhile and I ran Nova plugs at first and they lasted but had to be dead on with lsn or flames at end of straights or in the pits so I was told to give the hotter OD 77t($5 each) a try or if it's cooler outside than 80f try a OD 97t. I agree 100% with the advice on tuning so lean the lsn until it picks up rpm then drop idle if needed and if it lean bogs after tuning richen until it don't. IMO also Novas are really sensitive to a rich bottom because most are great on runtime per tank and flame when they load up easily. Good Luck!
Expect a comprehensive video tomorrow, I will tune it on both plugs and try to show the differences in PLUGS, not my tuning ability. Its not like I don't know what I'm talking about, I tried these plugs, I shouldnt have to make a video for everyone to believe me but whatever. |
Originally Posted by chopper82p
(Post 11231411)
I will tune it on the Nova plug tomorrow, video will be better, I will actually throw off the tune from where it is now sdo I can dhow everybody me tuning it, and I will have it on the Nova plug.
Did you miss the part where i said... who cares... ok how about.. i don't care if you tune it or not... it works with an OS plug.. then good for you jeeze.. you dont have to prove anything to me Bro.. do your thing... |
I have gone back and forth between OS and Nova plugs just this weekend..I even pulled the dam engine down and inspected the head button....zero damage ! absolutely no visible or measurable change and I have no issues tuning in the Nova plug after the OS plug was run.............. end of story, nothing more needs to be said... if someone doubts it, I will shoot some video and take some very detailed and magnified pictures of the head buttons... I have no issue proving what I am saying here....... I have spent the last couple of weeks testing the OS and Nova plugs, gone back and forth multiple times and have seen no issues..................... 1 month ago if you would have asked me about a OS plug in a Nova I would have said the same crap as these other guys...but I had too many guys showing how well the OS plugs ran, and also showing me they can swap back and forth,.... this basically inspired me to test this myself just to see, as the possibility of ruining a head button doesn't bother me much..... So I have now tested this first hand on multiple engines and had zero issues with any of them..I also have some fancy tooling and magnifiers in my shop and I cannot see nor can I measure any change to the button from running a OS plug..................
Anyways it is what it is...I can't deny what I have seen with my own two eyes..... If you guys need , I will post video and detailed pictures....... And I should repeat...that using OS plugs is not my idea, I love my Werks or Nova plugs...However several of my locals decided to run OS plugs in their Nova's, I tried to tell them not to, telling them how they would ruin their heads...and almost just to prove me wrong they went back and forth multiple times between OS and Nova plugs..basically proving me wrong right to my face.......... Pretty hard for me to tell a guy he is wrong when he shows me live how he can go back and forth between plug brands with no issue.... can someone maybe post a picture or show some measurements of a damaged button from a OS plug ? |
Originally Posted by kgombe
(Post 11231420)
Did you miss the part where i said... who cares... ok how about.. i don't care if you tune it or not... it works with an OS plug.. then good for you jeeze.. you dont have to prove anything to me Bro.. do your thing...
Just a test and tune video on the box so all can see because this needs to be settled. |
Originally Posted by Maximo
(Post 11231498)
I have gone back and forth between OS and Nova plugs just this weekend..I even pulled the dam engine down and inspected the head button....zero damage ! absolutely no visible or measurable change and I have no issues tuning in the Nova plug after the OS plug was run.............. end of story, nothing more needs to be said... if someone doubts it, I will shoot some video and take some very detailed and magnified pictures of the head buttons... I have no issue proving what I am saying here....... I have spent the last couple of weeks testing the OS and Nova plugs, gone back and forth multiple times and have seen no issues..................... 1 month ago if you would have asked me about a OS plug in a Nova I would have said the same crap as these other guys...but I had too many guys showing how well the OS plugs ran, and also showing me they can swap back and forth,.... this basically inspired me to test this myself just to see, as the possibility of ruining a head button doesn't bother me much..... So I have now tested this first hand on multiple engines and had zero issues with any of them..I also have some fancy tooling and magnifiers in my shop and I cannot see nor can I measure any change to the button from running a OS plug..................
Anyways it is what it is...I can't deny what I have seen with my own two eyes..... If you guys need , I will post video and detailed pictures....... And I should repeat...that using OS plugs is not my idea, I love my Werks or Nova plugs...However several of my locals decided to run OS plugs in their Nova's, I tried to tell them not to, telling them how they would ruin their heads...and almost just to prove me wrong they went back and forth multiple times between OS and Nova plugs..basically proving me wrong right to my face.......... Pretty hard for me to tell a guy he is wrong when he shows me live how he can go back and forth between plug brands with no issue.... can someone maybe post a picture or show some measurements of a damaged button from a OS plug ? A lot of us found a way for our engines to run better, this discussion is not to put anyone down, its to clarify the issue and ultimately help people who may be having problems tuning, or anything. Of course I don't mean to cause any tension between any of the members on the site, this is a discussion, like I said. We have strong opinions but with RC, you cannot be set on one opinion, things change, opinions change, things are proven false, etc. This is how the whole hobby of nitro RC moves forward, we learn new stuff about these engines, learn ways that were previously thought to be wrong for these engines, and they end up working well, sometimes better than the "conventional" way. |
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I have no doubt there is reason why so many are against mixing plugs......... I have no doubt people have seen issues...I will call nobody a liar, nor will I argue with anyone what they have seen with their own eyes.......
However with what I have seen recently I have to question if mixing plugs is really that bad.......multiple engines, back and forth and no issues found......... I even inspected the buttons and could see no damage nor could I measure any damage........So obviously its not a guarantee the button will be damaged or I would have seen the damage...... I Would prefer everyone to just run Nova plugs and be done with it, however for those who choose to run OS plugs I have nothing negative to say to them.....I have personally seen no damage done by going back and forth so far, and have done it with multiple engines already...I will post up any different findings if I do see a damaged button... This is not personal for me, I could care less one way or the other......if I do come across any damage I will happily post what I find.....truth is truth.. |
Viva la novarossi!
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Guys, this is just a discussion. I too want to get to the bottom of it. The problem is the variables that we can not always control or predict. I am hear to learn like many other and to offer good advice if I feel 100% confident in what I'm saying.
Soo, I have two buttons I am showing below. Freshly removed OS p3 plug from #1 and freshly removed a nova c6 plug from #2 here are some pics and measurements: Glow plug measurements-width of tip Nova c6~4.65mm OS p3~4.80mm Glow plug measurements-length of taper Nova c6~2.00mm OS p3~1.50mm Button measurements-width of plug hole in combustion chamber Button #1(OS p3)-4.79mm-started off with nova plugs then went to OS plugs. Button #2(nova c6)-4.88mm-100% nova plugs from new Both buttons were cleaned with Laquer thinner before photo. Button #1 http://i1197.photobucket.com/albums/...ps79a46bb2.jpg Button #2 http://i1197.photobucket.com/albums/...ps56a95aac.jpg Both plugs http://i1197.photobucket.com/albums/...psf793065e.jpg Sorry if pics are bad, best I could do. |
Maybe I am reading this wrong.... You said button one started off with nova plugs then went to OS and the diameter is less than the button that has only used nova plugs.... So in conclusion the OS plug has lessoned the diameter of the button thread...
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Originally Posted by prowlag
(Post 11231980)
Maybe I am reading this wrong.... You said button one started off with nova plugs then went to OS and the diameter is less than the button that has only used nova plugs.... So in conclusion the OS plug has lessoned the diameter of the button thread...
Edit: not measuring the button thread. Measuring bottom of button where the tip of the plug meets button. |
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