How Motorcycle Carburetors work and how to tune and clean them
Here's a link to the kind of carb cleaner I like best (it IS the best)
http://amzn.to/1rsKle5
Check out my newest carburetor video (it's even better!). → https://youtu.be/Rzec6VJQFCg
Follow me on Facebook → https://www.facebook.com/briansmobile1
Follow me on Instagram → https://instagram.com/briansmobile1/
Check out and/or Donate to my favorite Charity here (or ask your boss to!) → http://www.g1dfoundation.org/
hey... awesome video..nicely explained !
just one question. Please do tel me wts AIR NEEDLE and LOW JET used for again. ? i mean how and what do they work?
thanx :)
Reply
·
The air needle is like a transitional restriction to increase vacuum pressure and tapered to prime the main jet flow gradually to ramp up fuel flow from the idle/low circuit to the main circuit. Think of the circuits like gears or stairs. The needle covers transition between 3rd gear to about 5th gear on a six speed. It overlaps basically. Fuel is getting by it from the idle/low- on through to where it's completely out of the way of the main jet and the main jet fuel flow is roaring like the straw/compressor example.
Without the needle the carb would work, but not as smoothly through middle throttle (where most people ride and have the most fine input or throttle roll back and forth.
The low jet is like second gear on a transmission. You can shift from 1st to 3rd, but again you risk stalling and it won't be as smooth. Also there isn't really the mechanical inertia to carry the process on like you have with a rolling vehicle with a flywheel on the engine and the wheels turning. The pistons still create vacuum every other time they go down, but air just doesn't have the punch that steel does when in motion.
The circuits in a carburetor have to be there or you would have a limit on RPM range. An idle jet can't deliver enough fuel to really scream, and the main jet couldn't go slow and would be VERY hard to start because the engine would have to be spun up really fast. So you have usually four or five circuits (I want to say jets, but their physically different) that get air flow like stairs as the throttle opens. They are typically 1. Starting circuit (choke on) 2. Idle circuit 3. low jet 4. Jet Needle 5. Main jet.
How Motorcycle Carburetors work and how to tune and clean them Check out my other channel here http://www.youtube.com/watch?v=1KKvwMaIotA
Видео How Motorcycle Carburetors work and how to tune and clean them канала briansmobile1
http://amzn.to/1rsKle5
Check out my newest carburetor video (it's even better!). → https://youtu.be/Rzec6VJQFCg
Follow me on Facebook → https://www.facebook.com/briansmobile1
Follow me on Instagram → https://instagram.com/briansmobile1/
Check out and/or Donate to my favorite Charity here (or ask your boss to!) → http://www.g1dfoundation.org/
hey... awesome video..nicely explained !
just one question. Please do tel me wts AIR NEEDLE and LOW JET used for again. ? i mean how and what do they work?
thanx :)
Reply
·
The air needle is like a transitional restriction to increase vacuum pressure and tapered to prime the main jet flow gradually to ramp up fuel flow from the idle/low circuit to the main circuit. Think of the circuits like gears or stairs. The needle covers transition between 3rd gear to about 5th gear on a six speed. It overlaps basically. Fuel is getting by it from the idle/low- on through to where it's completely out of the way of the main jet and the main jet fuel flow is roaring like the straw/compressor example.
Without the needle the carb would work, but not as smoothly through middle throttle (where most people ride and have the most fine input or throttle roll back and forth.
The low jet is like second gear on a transmission. You can shift from 1st to 3rd, but again you risk stalling and it won't be as smooth. Also there isn't really the mechanical inertia to carry the process on like you have with a rolling vehicle with a flywheel on the engine and the wheels turning. The pistons still create vacuum every other time they go down, but air just doesn't have the punch that steel does when in motion.
The circuits in a carburetor have to be there or you would have a limit on RPM range. An idle jet can't deliver enough fuel to really scream, and the main jet couldn't go slow and would be VERY hard to start because the engine would have to be spun up really fast. So you have usually four or five circuits (I want to say jets, but their physically different) that get air flow like stairs as the throttle opens. They are typically 1. Starting circuit (choke on) 2. Idle circuit 3. low jet 4. Jet Needle 5. Main jet.
How Motorcycle Carburetors work and how to tune and clean them Check out my other channel here http://www.youtube.com/watch?v=1KKvwMaIotA
Видео How Motorcycle Carburetors work and how to tune and clean them канала briansmobile1
Показать
Комментарии отсутствуют
Информация о видео
Другие видео канала
Motorcycle and ATV Carburetors 101How to adjust a carburetor, jetting and mixture explained!Spark, Compression, Fuel / Air TestInstalling - Rings, Piston, Cylinder & Timing Motorcycle EngineCV CarburetorHonda Motorcycle Carburetor Cleaning #DIYCARBURETORS | How They WorkHow To Clean A Honda Carburetor - XR100 / CRF100 / XR200 / ATC200How to clean motorcycle carburetors04 How to inspect and adjust float level on a carburetor. BONUS: RICH LEAN Fuel Settings explained!How To Clean A Motorcycle Carburetor | MC GARAGEHow to clean a dirt bikes carburetor! (Made SIMPLE)How To Remove Rust From A Motorcycle Gas Tank: NO ACID50cc Carburetor tuning for Keihin CVK on a QMB139 Chinese scooter engineBicycle Engine Kit Carburettor Needle Setting TipsCarburetor diagnosing : Pod Filters and Dirty Carbs01 "How to" CV Carburetor : Disassembly Recording Jets and Settings Cleaning Carb Rebuild SeriesPilot Air/Fuel Screw Adjustment Explained - Single Carb - Part 1how to clean and adjust your 4 stroke carb pitbikeHow does a Carburetor Work?