Low Speed Needle Tuning of your Nitro Engine
Вставка
- Опубліковано 9 лют 2025
- You may of noticed that recently I have been showing many videos on Tuning topics. Please check out the previous ones, to learn the basics before you watch how to tune. This one is on Low speed needle (LSN) tuning.. More videos coming soon to / jthornley12 Subscribe now for more RC action, how to tutorials, reviews and more. Email: jt12rchelp@aol.co.uk MSN: jt12rchelp@aol.co.uk Website: www.jtrchelp.pi...
Been trying to tune my engine for 3 days. Finally found something easy to understand. Your videos is 10 years old but still helps to this date. Thanks mate
Glad it helped
None of the “professional videos” made on nitro rc tuning that have come out since this one are as easy to understand as your videos thank you I just got my first nitro in 2021 and your video makes the most sense
Thanks very much, I'm 40 but I still learnt something from you, well done and keep it up :)
I know Im randomly asking but does anyone know a tool to log back into an instagram account?
I was stupid lost my password. I would appreciate any tips you can offer me.
@Alvaro Michael Instablaster =)
well done for the video. This is much better than a lot of adults out there who claim to have experience but know nothing about delivering that to others.. You'll make a great teacher one day kid.
this kid is better than me at nitro stuff and has taught me a thing or two and im 4 times his age.
so anyone out there who has a problem with his video's simply dont watch them.
thanks jthornley your doing a great job keep it up.
just ignore the haters they're just jealous that you know more than they do
im new to nitro rc. ive finished running in and ready tune. ive watched many video's and have been confused by many of them until now. your video is the best. very well explained. hopefully u have one on the HSN as well. thanks heaps for the video dude.
Mate your videos are top notch stuff and very very well explained for beginners to understand like myself. Just getting into nitro after having a year on electric and I'm struggling to tune it but watching your videos you are making it very clear.
Thanks a lot dude ... the pinch test was new to me and helped me a lot. Thanks from a 35year old german nitro noob !
Great information here! Been into large scale gasoline boats and now I'm into big brushless electric boats. But I decided to get a nitro truck yesterday. I got the new HPI Savage XL K5.9.
I had a hard time getting it running out of the box. The tips here helped me get it running in minutes. Thanks!!!
best LSN tuning guide video on youtube, tones of info and examples of right, too lean, too rich, great pinch test demostration as well.
thanks jthornley12 :)
Dude I still come to this video every now and then considering I'm fairly new to the hobby and always refreshes my mind and helps a lot thanks buddy
I'm new to nitro rc and am totally lost. Your videos are helping me find my way. Thanks a bunch.
I think this is hands down the best LSN adjustable video I have seen yet.
I'm new to the nitro hobby and am in the process of breaking in my new Losi 8ight Buggy, my 1st nitro rc car. This low needle adjustment has been a pain lol. I seem to get it running okay but the next day when I start it, I have to lean it out to get it to start & then richen it up again to run it right. I'm hoping that it's just cuz it's a new motor. I'm on tank #7 today.
For my break in, I ran 3 idle tanks on the vert rich side, cooling down between tanks. Then tank #4 @ 25% throttle bursts & tank #5 to #7 @ 50% throttle bursts. Today it seemed to start somewhat easier, but I still had to lean out the LSN prior to starting.
Out of all the videos I have watched, this was one of the best. Thanks.
Your videos are so helpful my nitro car was passed down to me and am now learning how to tune and to keep it running for a long time and I thank you for all your help
I have watched many videos and not one of them made sense to me until I watched yours THANKS lol my nitro rustler is running great
Great video buddy. Im breaking in and tuning my Revvo 3.3 today and this help alot. Top work.
Have fun! :)
absolutely brilliant m8. you know your stuff! u just saved the life of a CEN GX-1, my fella was about to throw it at a wall until he came across ur videos lol.
thank you very much! x
jess =]
wow bud , you are half my age and taught me something , great video great advice , i do beleive you just saved me from having to buy a new engine , thank you .
Thanks mate. I know this is an old video. But a really good demonstration.
You're welcome :)
Well done youny man! Not only are you knoledgable, more importantly, you have the ability to explain things so a noob to tuning rc nitro like me can understand and grasp. Only recomendation would be to actually show us your making adjustments by sound with the engine running...how you found the right spot on lsn and idle.
That is the best video I have ever seen on nitro. Very well done
Great video. Goes to show that you shouldn't judge someone's knowledge based on their age. Well done.
Thanks for watching :)
Ok sounds good J. I will give that a try. i watched your videos on how to tune the engine and i learned very much from them. They're a lot better than the others i found on youtube with the demonstrations and what not. Thank you!!
Well it depends entirely on how the engine is running :) sometimes you have to tune the LSN first as it simply won't run to tune the HSN.
One of the best nitro tuning vids
Thanks for your support :) Don't worry about him, thoroughly dealt with n enjoying my blocked list. Plus I left his comment so that many people can thumbs down his comments
Well hopefully when I try that tomorrow it will sort my running problems out. Wish I found these vids ages ago. So nice to hear an English voice instead of American. Well done mate i've already subscribed and watched about 20 of your other vids
Thanks a lot for this video! I had been having severe difficulty starting my Savage XL ever since I bought it. Using your vid I was able to recognize the problem right away (low speed was way too rich). I leaned it out and now it starts with ease and I get great throttle response!
I bought a used tmaxx with a 3.3 and it constantly overheated and was really accelerated that was my first nitro i think this video might be the answer. Thanks time to bring it out of retirement
Good to know!
Thanks man this video helped me out I been trying to turn my nitro on for 2 days I saw ur video and my car runs perfect
Well said sir. I've watchecd a few videos on tuning and this has to be the easiest to understand. Thanks.
I have watched lots of your videos so thank you very much for taking the time to make them and great job! Ignore the haters and trolls they are just jealous and miserably bored. Your videos are very informative and helpful. Thanks again!
Thanks for your kind comment :)
Dude omg thanx a lot. My ofna hyper ss wouldn't start unless I held the throttle all the way down and once I let go it would shut off. It started doing that when I richened the low speed needle and it shut off. From then on I couldn't get it start without holding the throttle. Great video dude
I was having some issues with my new nitro engine and this vid helped me loads! Keep up the great vids mate!
ive since watched your other vids you posted and seem to have sorted my truggy now so thanks alot for posting the vids they helped me out loads!!
@rcfreak96 well any area of the Fuel line is ok. Just remember to pinch the same part every time for accurate tuning. I would recommend you putting a line on the fuel tubing with permanent ink to mark where to pinch it every time.
@graemecan Hi there- If you've turned the LSN all the way in then It will be rather lean... If you start engine, and just turn the LSN counter clockwise (Back out) Until it's flushed with the edges (It'll probably stall engine at that moment) then turn it half a turn in. That is stock for the LSN. Re-start engine and check that it idles ok. If it is low engine sound then lean it (CW) If it's high engine sound then Richen it (CCW)..... HSN default is flush to edges and one and half turns in :)
@ahmedtheking123 Check the idle gap is only 1mm open. you can adjust it using your Idle speed screw. Additionally, upon checking and you can confirm it is 1mm open, perhaps your clutch shoes are due replacement. you can check this if you push the break on your car and it stalls, then your ready for clutch replacement.
Usually means your a bit rich, but if it's performing well then no worries. It sometimes depends on what fuel your using, especially if it has a higher oil content like optifuel.
Very well put young man. Thanks.
I'm tuning in the cold season right now. more oxygen in the air. keeping the kit warm before use, and heat guns are my friend.
Keep it up. Peace.
bigger motors tke a little longer to shut down when pinched ,but when you have stable idle and good acceleration you have a good low speed screw setting !my low speed needle is 1,3 mm out !on my mgt 8 monstertruck !good imformative video !
Thanks, i blew a glow plug first, but then everything was right!! Awesome video bud!!
It's practice mate ;) that's all I can say to you. I nearly gave up with Nitro after a few weeks of owning one. but after nearly 4 years of RC I'd never look at leaving Nitro for electric again. I truly love both but nothing beats the thrill of a nitro, stick with it :)
Good job on the tech video RC-Madness! This should help anyone learning how to get into nitro RC.
Mine 3 days ago on my savage it was to lean on the low and I melted the piston ordering a piston thanks to you vid I know what I did wrong, but you vids are very helpful thanks
very well explained, props
Glad it was helpful!
@vincedajose No problem :) thanks for watching
old video.. but VERY useful THANKS... I have never tuned it because manual recommended not to -.-* it runs much better now, and starts much easier thanks again!
I just finished the 4 part videos and now I got my deploma as a nitro rc champ. lol. Anyway I learned a lot and I'm new to nitro I like nitro now more than electric.
Awesome! happy tuning mate
You did a fine job young man .I bet your parents are proud of you .I would be .
Thank you for your kind words :)
Your so very welcome young Man
Great vid , was having problems with bogging and this vid help me solve it .
Cheers pal
This kid is better than most of the adults on UA-cam. Like if you agree!
@gixxerovios Very good question, You always make tuning adjustments when the engine is at normal operating temperature. Usually this is after 5 mins or so of just driving around, using throttle. 110c is a good operating temperature for most engines, it's pretty perfect actually. You could try Richening the LSN just a tad, but it seems all good. Hope this helps :)
best video i've seen until now !
When the idling and high speed needles are set correctly, you"ll have an engine that will response immediately when you crack open the trottle from idle and will have a solid transition of power at all times.
This makes perfect sense now. Well done.
@rwdb11 180 degrees is slightly cool. Try leaning the HSN out 1/8 turn at a time once the engine is warmed up, and do High speed fast passes. Continue to do so until the engine bogs and perhaps quits at full throttle, at which time you should richen it 1/8 counter clockwise. Just sounds to me that it's currently running a bit sluggish n rich
No problem :) Thanks for your comment
@Kill3rAnth no problem, thanks for your comment and view :)
Great video, learned more from this than the TRAXXAS video! thanks little man!
Thanks, great video my tmaxx just revs super high when started n wheels creep a lot. Trying figure it. Will try this.
Your video Helped me and saved me to travel 400kms to get it tuned
@Theapplefan97 no problem I'm glad it helped :)
Usually at 1/4 to 1/2 there isn't much smoke, if there is then usually means your a bit rich on LSN. You shouldn't get much smoke from the engine unless your at full throttle or sudden acceleration, or driving up a hill etc.
@KiTKaTsOG The truck revving up and moving forward is totally normal as said in the video :D if it quits within 5 seconds then your settings are good. The wheels spinning could be due to a High idle or lean LSN. Use pinch test to check the LSN and if it's good then lower idle screw :) Carb opening gap should be 1mm open
Thanks for your support :)
thanks, replacing the glow plug fixed, it runs great now!
It's those R/C Nitro pull starts. Great way to do a work out
Funnily enough was on the phone to the tech guys at HPI today had they have a good word for this guy too.
I think I understood most of it. Nice explanation and demonstrations of what is being explained. Saludos!
All i have to say is THANKS for explaining in lame turn so i understand . Thank You .
Scarabchris, no snow so far here either in Connecticut, it's very unusual, not even my pond was frozen, and it was 60 degrees today, all well more good weather for nitro
Great video! Well done. Thank you for sharing your knowledge.
Thanks for the comment :)
@MrMLMFB Perhaps you have a clutch issue. But for new engines, it is fairly normal as the clutch needs to wear in a bit. See how you get on, keep it off the ground when idling it
Really informative man. I've been having problems with this but you explained it really well. Thanks
Depends how lean the LSN was. If it was very lean then even a low Idle setting would not stop the high revs caused from the engine being lean. If an engine is lean though, you don't want to disguise it. You need to richen it to prevent damage. Josh
@MrHeAtErMaN No problems. Thanks for watching :)
Good i could not understand the video at the first view but after watching different videos about pinching the hose now i got it. Cool!!
best vid on here about setting your traxxas, very helpful! thanks young fellow
always go back to factory settings to start from not what some one else has and factory settings are usually flush with the needle housing ,but check with the engine manufactures as different brands different settings
@xontroi Hmm well the possibility might be, that the HSN is running very lean and therefore is effecting the Idle mixture as well. As long as your Glow plugs are not burning out quickly, and the Idle is not too high or engine is revving by itself, then your ok. Fuel % and heat of plugs can often effect tuning settings and engine behaviour :)
@jamockor Doesn't make any difference, but mark a line where you pinched the first time and tune your engine around that
@rwdb11 When the tank is filled over 3/4 sometimes it can add too much pressure and can often cause your engine to run rich for the first 3-5 mins or so of running.
@ScarabChris No problem :) A good choice as well, in time for snow! Have fun
It might be the Glow plug, if it's at normal operating temp when it cuts off then it can't be overheating. Try replacing glow plug :)
@Kill3rAnth Lean LSN perhaps? and check the Carb gap is 1.5mm or so open at idle.
@Chris71920 You can replace the seal mate. Check your User manual for part number
Hi I would like to start by saying your videos have been very helpful to me in the past and helped me set up my last nitro car. I have been running a thunder tiger sledgehammer for 6 months which has been working great and easy to tune. I have just picked up a tomahawk mx and am having a bit of trouble starting it. I have been breaking it in (its been through 4 tanks of fuel now) but have been having trouble starting it since. When I pull the cord the engine starts then stalls instantly.
@addie197 no problems, glad I helped :)
No, wrong way round. You finish with the idle. What your saying is correct, the idle speed is effect by LSN and HSN Tuning settings. Therefore, if you adjust the idle first and then decide to Lean the Low end, the idle will increase. That's why the Idle setting is the last thing to be done. J
@rwdb11 Oh sorry, I thought you meant filled up too high. Having it mounted higher than the engine shouldn't be a problem. It shouldn't make much, if any, difference
@sreeharan7 bit of fuel spitting is fine, especially at this time of year. HSN being rich or engine not being cleared out could be causing it. Rev it high off ground with the exhaust facing downwards to clear the engine and exhaust from old fuel. :D
Great video. I'm struggling to get a good tune with my nitro but I think I got it now
@thomsonfly212 Shouldn't do running rich mate. Lean can have effects on internal parts yes. Try removing the starter and cleaning the one way bearing from Oil and other debris
Thanks for the positive comments! :)
Great video,one of the best i have seen on tuning,i have one question when i do the pinch test my engine revs extremly high and then quits at 5 seconds,is this a sighn of being to rich,thanx
@MrPelefant Sounds like its running pretty well to me. 7 seconds suggests slightly on the rich side, but thats not a problem. wheels always spin when you pinch the fuel line :D