Nitro Engine Tuning Guide Part 1 - The Needles of the Carburettor 

You have the most relaxing voice I have ever heard

I fly nitro planes, but your tutorial contains excellent tips as there are only very slight design differences. Your communication skills are absolutely fist class. I don't think I heard a single 'err', well done and thank you.

By far the most informative, well explained tutorial I've seen on nitro tuning. I only wish he could tune my Alpha 28. It would be set for life.

Great video and really well explained, thanks for sharing Josh, much appreciated

Very handy information mate. Not that I've touch the low speed screw, i can rest assured which one it is now 😁 i have a rough idea but even more so now after your tutorial. Thanks buddy

Great video,Josh,I learned a lot from your early videos,a good reference point,and this is a worthwhile update.These engines can be extremely frustrating but persistence brings huge reward,I don't think nitro is for everybody but I hope they're around for a very long time yet,great satisfaction when you get it right with amazing sound,speed and smell.👌✌👍😊😁

Very clear explaination, very well done.

I have a metering screw on my Associated MGT 8.0, what does it do ?

Thanks for the series! My problem is that I made the mistake and messed up the factory settings needles in my force s15 engine and can't seem to find them anywhere. In the engine manual says that both needles should be 2 - 3 turns open from bottom but the engine won't start like that. Can't manage to get it running. The engine is brand new, couldn't do the break in procedure hence I could not start it. Can you help me with some advice?

I love such videos, thanks Josh!!!!))

My car just runs without the glow plug when I turn the low speed needle about 2,5 turns in. Isn’t this too much ? I mean it runs well so far but I don’t want to damage the engine due to too lean mixture.

I agree with A the G, except for a glaring omission in presentation - no subtitles.Thanks for the vid!

Sick video

Hi first of all thanks for your videos they have really helped me out over the years top man. Just wondering if you could help me out I've just bought a macstar .28 engine and it didn't come with any default needle instructions and the needles look way out just wondering if you know the factory defaults for this engine ?

What's the 4th brass screw on the carburetor thanks

Explained very well. This Lad would make a great teacher!

The low speed needle or idle needle affects the entire range of the engine. The high speed needle does indeed control full open position but the idle/low makes a significant contribution to the high speed setting. The mid-range transition unfortunately is a compromise between the low and high rpm. It's often where the engine runs the poorest. Having some experience with nitro helicopters, certain engines have a third mid-range needle to obtain a better transition. Not seen in gasoline or smaller fixed engines.

Great tutorial Thnx

I wish the default settings were as easy to get as others. I have just finished re-building of a vintage Hobao hyper 10 Touring car and i decided to by a brand new Hobao hyper 12 engine to make everything stock but my version came with a bog standard carb that only has the high speed needle and not a low speed needle so when i have tried to check the default settings from the manual that came with the engine it says open carb 6x 1/8th turns from closed which is only one and a half turns from closed but a much better detailed manual for the same engine is saying set the high speed needle three and a half turns? Also that manual has a different carb showing a high end and low ends needle whilst the version i have is different as explained above? So now i have two different recommended settings? Either i go with the manual that came with the engine (6x 1/8th turns from closed) or the better detailed manual from the hobao site saying three and a half turns from closed? I have managed to break the engine in with the default factory settings and ran 5 tanks through it on idle to be on the safe side but now i am trying to tune the engine it seems far to rich for three and a half turns out from closed but way to lean if i go for the 6x 1/8 turns? So now i am going to buy a better carb with both the high and low end needles in the hope that might solve my needle setting problems. Wish me luck lol

is that a hyper 7 or hyper SS?

Please please help my nitro stampede when I give it throttle it just revs up and does not move what can I do I hit a curb yesterday

What is the screw on the OTHER end of the carburetor? The one opposite from the low speed needle screw. My engine only has 1 needle screw of the side, and it's OPPOSITE of the throttle linkage.

But what about the idle mix screw?

When breaking the engine in and doing the 5 tank engine break in does it have to be driven or can I have it be on stands ?

I have the gx15 engine it has no lsn which is a bit of a pain

I got a old one I want to restore the needle on it though just keeps turning is it meat to turn endlessly or is it meant to stop when fully open?, it is a 2004 tamiya NDF-01 thunder , pull cord is broken and needs new fuel pipe and glow plug and not sure about this valve and hope the problem ends there as any spare parts for it seems costly

Hi.Do you know how to stabilize the Mid Range Needles crew because it comes out continuously?

Hi could you do a video on the Kyosho fw06 please It won't start and I think it's got to do with the tuning not really an expert on these type of things thanks

hiya and I was wondering if you could help me I have car that I can't seem to get running right and when I think it is running I am back at the start again many thanks

Ughhhh I am having one hell of a time with the low speed and high speed never used one before twin needle and it's driving me batshit crazy hahah😅

What if an engine doesn't have low speed needle like gx15?

Epic video! How did you grow your channel? I've been trying over a year now and I only got 175 subscribers. Also just got myself a arrma talion.

I have a backwash 1.10 just took it out of the box i carnt get the fuel to go in the carborator. can you help.

I've watched your vidoes and still having a hard time. I have a rb c4 in my ofna ultra lx-one

Thanks

what's the problem if a nitro rc revs up or revs on its own when lifted on the ground?

What about the brass screw below the HSN?

Havent watched the video but I bet its good. My point is, where were you when I was 14 and had no clue how to tune these fuckers! ahah still in time to help newcomers.

When engine running wheels start spinning can you help

I had a weird problem with my nitro car once where we had set it up so it would idle nicely and then all of a sudden is went full throttle on its own with no input.

Lol I thought my low end needle was my idle needle, and I really messed things up

Good video but one error the idle needle is not a needle but a stop that controls both air and fuel.

what if u bought it from some one and it doesn't start at all , no matter what u do , carbs not tuned at all and it won't start

What would happen if my high side is too lean

I've gotta nitro buggy with no pull start. I just put a bit of string on it and it's a tug and go

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Why is my rc car smoking a lot?

Cancer !