How To Set Your IDLE GAP! The Starting Point of You Carburettor Tune for Nitro Engines
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A few good videos about engines:
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Engine Assembly Into Car
• Fitting Engine, Meshin...
Engine Maintenance
• How to look after your...
Great Videos On Engines in General On This Channel
• Os Speed B21 Ty2 review
Timestamps▼
00:00 - And so the journey begins
00:54 - Idle Gap - The Business
02:49 - How to measure your Idle Gap
05:40 - Marking your idle gap
07:13 - THE IMPORTANCE OF THE IDLE GAP!!!
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@bossbluff3577 3 роки тому
Quick tip: you can also use small sections of music wire (or aircraft style safety wire) in the appropriate diameter to measure the gap. A fairly common steel wire size: .020” = 0.5 mm You can usually find this in the model airplane (or train) section of your LHS.
@fencer39 3 роки тому
Dude you are right !......but I will watch the full length version when I have a few days to spare. Good luck you are very entertaining.
@jamesathens8027 3 роки тому
the full vid is tuning gold you should watch it
@peterjemas7613 10 місяців тому
Great video! It's the clearest explanation of how the idle gap and LSN correlate that I've seen so far.
@jonnis240 3 роки тому
Loved this information on idle screw 👌😁
@ledgendary1735 Рік тому
This video helped me get my Revo 3.3 just rippin! Stays at about 265 and just flys. Thank you so much, from Northern Michigan. The humidity is tricky.
@dangarcia6940 3 роки тому
Thank you for sharing your valuable knowledge.
@user-gg3gt9nc5c 3 місяці тому
This will help set my nitro car up thanks, well explained 👍🏻
@MrSmartstots Рік тому
Thanks for the video, bought some feeler gauges yesterday, arrived today, ground down a bit but need to grind a bit more. Hopefully run my revo at the weekend if it’s not too cold
@briancarroll6245 3 роки тому
I use the tip of a cable tie, great video.
@IowaBudgetRCBashers Рік тому
Thanks.. I appreciate it. Was adjusting the slide needle screw to try and adjust the idle🤷♂️🤦♂️
@NitroMike 3 роки тому
Great video series and video! It is much easier to share a video instead of explaining the entire thing over text messages every time
@joeleonard643 3 роки тому
Great video JQ makes a lot of sense and one less thing to have to adjust to get a good tune, would the idle gap be the same on a .32 engine or slightly larger?
@scalemodelconcepts7644 2 роки тому
great channel and video!
@samuelencinias2026 2 роки тому
0 seconds ago Wow, everybody who’s not a nitro expert needs to watch your videos. I understood the basic operation of a car/truck carb but you break it down for the RC carbs perfectly. I could NOT get my Savage 4.6 tuned. After I watched a couple of your vids, Im up and running. Awesome job.
@jeffwhite9392 Рік тому
I use a number drill ( bit ) . The double idle also is a " thing " on most things carburetored ( especially motorcycles ) for which I'm now very grateful having just purchased a nitro . Thanks very much for that ; but now I'll have to watch the long version ...
@DreamingAboutDreams 3 роки тому
Damn this was good
@broncobill3902 2 роки тому
You know what works even better than chopped up feeler gauges……..solid core copper wire. Find the appropriate wire gauge size that matches the desired idle gap and use that. Much easier. 👍🏽
@jocaz 3 роки тому
JQ, you are awesome ... and I still believe in you 😉 Small trailers to see the full movie ... it's Hollywood! Come on folks, watch the full video two or three times, and if that's not enough ... watch it again! ... and if you like, join us 🍻
@lonzerwalker6569 3 роки тому
What up Team,just like this world we exist in every body’s little world is king ! 😯... No what I mean is you’ve put in the WORK hence stayed in class instead of chaseing the ass (school was in) you payed ATTENTION.Maturity only blesses those that understand the relationship of VERTUE.Some people like bumping there head over and over and over again,but they think this is normal. I don’t think so,unless you like scrambled eggs for brains.Oh boy I could roll with this for a minute but I‘l’ll stop here. Hey J’ I like your STYLE your kinda like myself in way ,you give the key or IMPORTANT info up front but before your done you express it multiple times from different angles to attempt to crack the madula of the Pepe’s your dealing with.🤔... Don’t trip J’ a job is just like taking a nap,some are good or bad or ? Indifferent ? KEEP SCHOOLING EM’. (ABC’s). IT’s hard to knock ✊ a good person down.... You know the boss gave us all the tools ⚒️ to make things happen in life but he left it our choice to figure when and how to use them. Your going to be ALRIGHT and to heck with them if they can’t take a joke.🤷♂️. Stay up Team “God Bless ,and keep smiling”. “DW13”out.😎... GOOD JOB !!!
@maximuskodrrata2697 3 місяці тому
Very good knowledge, thank you very much! For engine break in, is the first thing to pay attention to the idle gap setting too?
@rccaraddict294 2 роки тому
Awesome 👏🏼
@tomato1826 3 роки тому
Great stuff
@CraigAndres 2 роки тому
JQ brilliant info! Tried tuning my engine this way and so much easier knowing your idle gap. Engine tuning is much easier too understand since watching your videos. I will keep watching them and keep learning. Thank you again 👌💥
@nikolajc7617 2 роки тому
But you just cant use same idle gap for all engines, so what do you wanna do if you dont know it for your engine????????????????
@CraigAndres 2 роки тому
@@nikolajc7617 Hi, you need to know idle gap for your specific engine! JQ gives you the idle gap for the o.s to set it perfectly. Since tuning my engine this way. I have gained power, run time and had no issues. 👍
@nikolajc7617 2 роки тому
@@CraigAndres Thats what i said.
@CraigAndres 2 роки тому
The video is all about tuning o.s engines so if you own a o.s you got the idle gap, if you don't own a o.s then find the idle gap then you know. My Truggy is fast as heck and 10 minute pit stops is no problem.
@nikolajc7617 2 роки тому
@@CraigAndres lol, the title says nothing about OS engines. It was your words that made it sound like you didn't know to start with correct idle gap
@richardmclaughlin6220 Місяць тому
24awg is 0.51mm 25awg is .455 but hard to find might find in small motor windings but is probably coated
@avohrarocks 9 місяців тому
Hi i have a challenge with my hpi mt2 with aG3 nitro engine. I have measured the gap and my idle gap is as per manual. High speed and low speed needle is flush with carb engine stars fine but as soon as i apply break or keep it on the ground it shuts off. What should I do? Please help
@sebtarta 3 роки тому
i watched the full video already. Watching this again. intro song blew my ear drum out though
@invisiblespeedrc 3 роки тому
Fixed for future videos!
@keithbates8482 3 роки тому
@@invisiblespeedrc So the more you lean out the lSN, the more you have to reduce the idle screw?
@invisiblespeedrc 3 роки тому
@@keithbates8482 yes, but you don't reduce the idle screw. You set it to a known idle gap. And then you adjust the LSN for the right idle RPM.
@keithbates8482 3 роки тому
@@invisiblespeedrc Got you
@keithbates8482 3 роки тому
@@invisiblespeedrc So once I set my idle, then I adjust the low speed for the idle
@ct1762 3 роки тому
so these little carbs don't have a dedicated (separate) idle circuit like a 2 stroke outboard or a 2 stroke jet ski motor i'm assuming since they are so tiny. interesting! any idea what the idle air gap should be for a dynamite .21 motor? the manual just says the idle air screw should be just in from flush on the needle body. why do you need to measure it if you can just tune it ... or will it make it too difficult to adjust when running?
@ilovenythismuchilovenewyor5801 3 роки тому
Looking 4ward to doing this to my flashpoint engine haven't even broken it in yet just need to dremmel the feeler gauge bits. No one makes ones for rc yet ??
@leonardgerard2159 2 роки тому
What about os 1/8 onroad engines, is the idle gap the same?
@andrewbounds8672 3 роки тому
Can you help when I turn my idle screw it doesn’t move that much and when I break it cuts out hope you can help
@keithbates8482 3 роки тому
Well I be damn, that was so simple 😯
@Mastervenvy 10 місяців тому
Does the 0.45/0.50/0.55 idle gap from your full video also apply to a 4.6 bigblock
@kennybowers7607 5 місяців тому
First thing to set in my opinion before even putting fuel in.
@petehamm7762 Рік тому
Does everything here apply to gas rc engines as well?
@andrewcasillas7501 Рік тому
Ok my 28.8 idle gap is supposed to be 0.6mm but I just check and I am way under could this effect the tune or is this one of those less is more lol.
@teamringo864 3 роки тому
Great job Joseph !!!!!! Now you just need a socal driver to rep JQ ....... like that guy Jonny Ringo LoL!!!!!
@triipiix187 2 роки тому
My idle gap is 1mm but on the right I have another gap ? Any help please ? Hpi Rs4 evo 3
@Serialcrasher 2 роки тому
Hi, do you remove the Venturi to measure the idle gap ? Or you leave it in place in the carb’ ? Txs for your videos 👍
@invisiblespeedrc 2 роки тому
Remove
@rcbustanut2057 2 роки тому
I have been trying to get hang of this. The manual for my Losi 8ight Buggy states that the idle gap is 1/16" to 3/16" (1.57mm to 4.78mm). That seems huge compared the 0.5mm to 0.7mm you mention lol. If the idle gap is also set too large, will that cause the car to start rolling on its own? Thanks again for these helpful videos 😎👍
@Erockspencer86 2 роки тому
Yes, that would cause it to roll on its own. Also, it is worth noting that a failing clutch spring will also cause the car to walk on its own
@David-069 2 роки тому
Some people don’t even know what a tick over/idle screw is and they wonder why there nitro engine cuts out when they put on the brakes on.HEY YOU GUYS NEED TO GO WATCH JQ. cool vids man.
@shavey77 3 роки тому
Just a quick question. I have a hpi bullet and a hyper 7, both manufacturers state 1mm idle gap, are they being over generous? Would i get better results using 0.5mm gap as you suggest for the os carbs?
@gutzu265 3 роки тому
Try it and find out....
@HeliTeamOwl 3 роки тому
How did you measure the 0.5mm idle gap? Remove the venturi for measure? Or measure incl. the venturi?
@invisiblespeedrc 3 роки тому
Without venturi
@midwestboss8808 3 роки тому
Moral of the story lean the fuck out of the high and low speed and set the gap to .5
@greenman407 3 роки тому
Hello. Does the idle gap for a 21 size engine hold true for larger car engines like a 28 or a 32 or even a 38 ?
@invisiblespeedrc 3 роки тому
I dont know, don’t have any!
@danielkmit4145 3 роки тому
You guys really do need to watch the whole video go back spend an hour and 20 minutes unless you already know what you’re doing
@greenman407 3 роки тому
When do you change your idle gap from 4.5 to 5.0 to 5.5 mm ? Perhaps when there is a change of weather ?
@invisiblespeedrc 3 роки тому
No not really. When the engine is old.
@abdullahq5925 Рік тому
What is the idle gap for savage x 4.6 big block ?
@ZingZingNZ Рік тому
Try around .7 as not a comp engine
@brianlisella3924 3 роки тому
Do you know what the idle gap should be on a ke15sp koyosho engine? I just got this nitro and am new to this. I watched your video and tried to fine tune after the break in. After getting it close. Engine stalled. Wouldn’t start. I thought my tune was off , soooooo I messed with all the settings because it wouldn’t run. Ugh it was a unexpected bad glow plug. So now I’m nowhere near where I should be. There are no factory settings that I can find to get me close.
@invisiblespeedrc 3 роки тому
Start from rich side, you don't need factory settings. Set idle gap to 0.5 to start.
@brianlisella3924 3 роки тому
@@invisiblespeedrc thank you. I’ll give it a try.
@aarontoler90 3 роки тому
I’m new to nitro engines and I just bought a Losi 8ight t rtr model. In the owners manual it shows a huge idle gap. It’s the dynamite .28 engine and can you have a smaller idle gap than what the manual says to run. I’ve watched this video a bunch and I still don’t have an ear for the tuning so I’m not sure on what it is supposed to sound like at a good one stage idle. Thank you a bunch.
@invisiblespeedrc 3 роки тому
Please watch the full video. It shows it
@aarontoler90 3 роки тому
Thank you jq sorry I didn’t look for more of your videos. I’m new to your channel as well thank you.
@invisiblespeedrc 3 роки тому
Please subscribe so you don’t miss stuff. You can probably run a 0.5 idle gap on that engine also
@RBAERO 3 роки тому
Question. The idle gap doesn't change with altitude or weather conditions?
@invisiblespeedrc 3 роки тому
No
@Jon_Flys_RC 4 місяці тому
Is the idle gap values in mm or inches? I have an os .30vg that I have never gotten a good idle on.
@invisiblespeedrc 4 місяці тому
mm
@Jon_Flys_RC 4 місяці тому
@@invisiblespeedrc do you have any tips on tuning that engine? It’s always been difficult. It has a hanging idle like it won’t come off the pipe for 20-30 seconds when trying to get down to idle. At this point I think it needs a full carb reset.
@b-luv339 2 роки тому
What if your running a carb insert? Do you set the gap without insert?
@invisiblespeedrc 2 роки тому
No, you do it like in the video
@JohnJones-vp1em 2 роки тому
Just starting nitro bought a traxxas nitro. It's a pain n my ass. I need help
@wichitafc98 3 роки тому
I have a question, there are some people ( on road racers) who want to know about the condition (has carbon on it) of the glow plug and how it effect the tune of the engine?
@invisiblespeedrc 3 роки тому
I think a damaged glow plug will make the engine run rich, so if you adjust the engine to run right, and then change to a new glow plug, the engine will run lean with the new glow plug.
@davidlp5956 3 роки тому
Do you always set the idle gap with the carb restrictor removed?
@invisiblespeedrc 3 роки тому
Yes
@davidlp5956 3 роки тому
Awesome video btw. Enjoying your book as well!
@muchagrande1687 2 роки тому
Does the idle gap method also work for on road? For let's say an O.S. 2104?
@invisiblespeedrc 2 роки тому
Yes of course.
@muchagrande1687 2 роки тому
@@invisiblespeedrc Thanks, and just out of interest, what about others brands like novarossi?
@invisiblespeedrc 2 роки тому
They are all nitro engines. Of course it applies. The only difference is the best idle gap to run. And that can be found through iteration, as explained, and showed in the full version of the video.
@muchagrande1687 2 роки тому
@@invisiblespeedrc That last sentence answers my question. Sounds logical, but it's also good to have it clear that the 0.5mm does not necessarily translate directly to other engines.
@toddyrightonit 2 місяці тому
Big thing to remember here is if your servo throttle end point isn’t set correctly a lot of this is useless
@helinoobTV Рік тому
Does it have to be done with engine running????
@invisiblespeedrc Рік тому
Of course not. Did you watch the video?
@helinoobTV Рік тому
@@invisiblespeedrc yeah I did but u have it separate from the engine 😅 and manual says only to do it with engine running
@samweb1981 Рік тому
You set the idle gap with or with out the venturi attached?
@invisiblespeedrc Рік тому
Without
@iheartnovemberful Місяць тому
I wish i read this comment 2 days ago..lol i set it with venturi..lol i had hard time getting it to idle..lol
@iheartnovemberful Місяць тому
Im using a 6.5 venturri my next question is after setting the gap.do i put back the venturi and tune from there?
@jamesmccabe8736 2 роки тому
But this is the starting point. I was watching the full feature and UKposts distracted me. I'll go back after I watch this. Also wire gap gauge would avoid Dremel step.
@RcLEGIONClub 2 роки тому
works for any .21 engine?
@invisiblespeedrc 2 роки тому
Yes
@RcLEGIONClub 2 роки тому
@@invisiblespeedrc Thanks for all the videos you make, personally they have helped me a lot!
@damianfoster398 2 роки тому
Use 8
@jakepaintin7215 2 роки тому
Trx 3.3 stalls out on full throttle. Any suggestions?
@invisiblespeedrc 2 роки тому
Bad glowplug
@jakepaintin7215 2 роки тому
@@invisiblespeedrc replaced it 2 times cause that's what I thought
@slicktmi 4 місяці тому
Traxxas is known for shitttyy nitro engines the carbs in them also Crack and make it impossible to tune
@blgaming6717 Рік тому
What makes you think we all have dremmels at home to do this
@luigibellantoni6828 Рік тому
if you don't.....you shouldn't have a RC car....
@russellw5447 Рік тому
Use a file (a fine one).
@PhuongNguyen-fe9pm 2 роки тому
the sound is not good I am quite disappointed
@invisiblespeedrc 2 роки тому
there is nothing wrong with it
@MahiKhan-zr2fd Місяць тому
Hahahahaha I have the simplest way to tune any engine without any manual of nitro engine
@mauriciojaimes 8 місяців тому
Get to the point
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