STEP 1: ADJUST IDLE MIX (FASTER SCOOTER - EPISODE 4)
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- Опубліковано 12 вер 2016
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Now that you have cleaned your filter and de-restricted the brass plate from the 17.5mm Dellorto PHVA Carb on your 2005 Piaggio Typhoon 50cc 2-stroke Hi Per 2 engine, it is finally time to do some carburetor tuning to make the bike perform smoothly and make use of that extra air/oxygen into more power.
First step, adjust your idle mixture. Idle mix screws are either an air screw or a fuel screw. The one shown here is an air screw where turning it clockwise would richen the mixture. It is recommended you start off your mixture rich and work your way down for 2-stroke engines as lubrication is a component of your mixture. Therefore I turned the idle mix screw all the way in (clockwise) and backed out 1/4 of a turn to monitor improvements in engine response and idling rpm. My final setting was 3/4 of a turn out. Engine response was crisp, there is not a significant smell of unburned gas at idle and header temperatures were relatively stable.
Stay tuned for the next episode part 2 of carburetor tuning as I show you how my scooter progress from a scooter that holds up traffic to one that can zip around rush hour traffic with no problem!
If you want your bike to bury the speedo needle like ours did, subscribe and stay tuned for future episodes. We will show you how to destrict the bike from factory, install the Leo Vince ZXR exhaust, open up the intake, and modify the transmission. Come along with us as we transform this little 50cc scooter from a slow and boring bike to a fast and peppy machine that will do circles around traffic!
Other bikes that shares the same platform/engine includes Vespa, Piaggio, Aprilia, Peugot, Gilera, TPH, Typhoon, LT50, LX50, ET50, Scarabeo, Stalker, Zip, Fly, etc. - Авто та транспорт
My son has a Piaggio ZIP 2T and was having problems of the engine dying-off after some kilometers and then refusing to start before cleaning the oily spark plug. This video was a heaven send, as it clearly shows where the adjustment screws are and what each does. We fitted a clean spark plug and got the scooter going and rode it for a few kilometers to warm it up and then just followed the video instructions (however without having a rev-counter). A few minutes later the scooter was running great and on checking the spark plug again it was a nice dry brown-grey tan colour. Many thanks.
Thank you for watching. All the best.
You sir helped me so much!!! I did what you said and put that screw all the way in. Did a few test runs and turned it back little by little till it stopped bogging. Thank you again!!!
Scooter - Honda squash with a Honda dio swap
I found your video super helpful in understanding idle speed and air mix adjustment.
I've got a vespa et2 fitted with a dellorto carb.
Thanks heaps from Aus.
Thanks for the awesome comment!
i have an aprilia sr 50... have the same carb.. did some jetting etc.. but it wont start on cold engine.. once it warms up it will start like nothing... i think its the idle mix that needs to be adjust??
Check to see if the choke is ok but yes I agree the idle mix might need to be adjusted too.
Noticed you live in Alberta. Do you ever visit Vancouver? Lol are you apart of 49ccscoot forum aswell? I think you could be of some great help there and meet some cool scooter people
Yes! Vancouver is my second home. I used to visit a lot of the scooter guys over on the totalruckus.com in BC but I have been lazy and haven't joined the 49ccscooter forum yet. Thanks for the kind words and hope to catch you on the road some day (blowing past my scoot in your BBK!)
Im a lil confused, i just got my tacho meter and watch your video 5 times
1) completely turn in air screw (enriching mixture)
2) warm up 20-30 mins
3) turn idle speed to 2800 - 3000 rpm (i made mine to 3000)
4) so turn and rev till you see it surging
5) turn down idle speed to 2300 around
6) turn mix screw ??? till what? the idle rpms go up or when reving rpms are fastest/highest??
Answered you in the other post! Hope that helps Joe!
JoeKickass324 So the real way to adjust your idle is to adjust your idle screw so that it doesnt turn off. Turn the engine off and close the air screw, and open it 2,5 turns. Turn the engine on and turn the air screw so that the engine is the most responsible and stays revving well. Then adjust your idle to how fast you want it to rev
I have a gilera stalker 50cc 2 stroke did all that and boggs when full throttle while driving only at full throttle middle its runs fine
fiftymil how can i tell if my cdi is restricted or not the max revs i get are 9000 rpm ?
What bike do you have? If it stops right at 9000RPM chances are you have a rev limiter. An unrestricted engine will basically rev till catastrophic failure. On a Honda Ruckus for example, failure typically happens above 11,000RPM
hey man I was talking to you about Leo vince exhuast for 08 zuma I can't seem to find any that can ship to usa. I did however find a stage 6 pro replica that seems to have the same power band. Have you heard anything good about this exhuast? Do you know of anywhere to get a Leo vince zx or zxr? for USA thanks.
Stage 6 are mostly for higher RPMs from my readings and I do not wanted to exceed 11,000RPM on my engine to improve longevity which was why I chose the Leo Vince ZXR. At 9500RPM, the ZXR outperforms the stage 6.
To my knowledge the Yamaha Jog and Zuma shares the same exhaust and most of the minarelli engine parts. You can find some Leo Vince ZX here at this affiliated link: goo.gl/eoKWKG
Does that work for you?
FIFTYmil
the only thing I'm worried if that one in the link is for the vertical minerelli or horizontal I have horizontal. It says axis which uses the horizontal but the jog can use either so I am not sure.
Yes, the earlier model jog uses a vertical minarelli. You could ask them if it fits your 2008 Yamaha BWS/Zuma
How do you remove the front plastic off the front of your typhoon? I have the same scoot. I want to take it apart to paint. Looks like headlight is not letting it come off
Have you removed the headlight already?
@@FIFTYmil yes I did. I got it figured out. Was gonna get a new exhaust. Yasuni from scootertuning.ca. Any tips? Just swap it out and go?
@@kentwilson549 Check out my other episodes on my channel installing the leo vince expansion chamber muffler. It was mostly a swap and go but depending on the muffler model, there were some extra benefits/modifications that could be made.
Thank you. I have a Leo Vince on it now. Was gonna upgrade to one I found on scooter tuning.ca
Hey I have a 49cc scooter and my scooter bogs down when I go like half way on the throttle and doesn't seem to go as fast as it can any suggestions
Did you do anything to it prior to this observation?
@@FIFTYmil I tried adjusting the mixture screw,throttle cable,idle which the bike seems to sput out when I put it lower then 2600 rpms,I've tried using carb cleaner in the gas tank one thing is is that it was filled up on 93 when it takes 89 for some reason could this cause the issue,also when I push the bike theres a shhhhhhhhh or like a swishing sound coming from near the rear tire when I push the bike
@@tommycaterino9440 a different octane is unlikely the reason for your observation. It is most likely because you adjusted the idle mixture screw.
How did you installed that rev counter? Can it be installed on a 4 stroke scooter? BR
I made a tutorial on installing the rev counter here (ua-cam.com/video/1aSLUc_MPSo/v-deo.html). Yes it can be installed on a 4 stroke scooter. Hope that helps!
Thank you so much, I already ordered a rev counter just waiting it to arrive and install!
Good luck and feel free to ask any questions on here if you need help
What is the black box on your dash...thanks
It is a tachometer. Cheers
It is a heart beat machine that counts the beats
I have the same bike but 2001 I can’t full throttle with out it bogging out what do you think? I’ve change the spark plug like 3 times
I have a 70s kit on it no exhaust yet 63main jet stock rollers
And it doesn’t go over 6k rpm when riding it
@@Ryan-us8vc You main jet may seem to be giving out too much fuel. Try increasing the amount of air to see if that improves the engine performance.
Ok thanks I will try that if no then maybe go one or 2 jets smaller?
And why do you think it doesn’t go over 6k rpms
Will this make the bike faster
Continue watching the next episodes to find out
my piston seized up could this be the reason ?
One of many reasons, yes.
FIFTYmil yes, this video is definitely the reason your bike is now broken... this isnt tuning lol.. its playing with a carburettor... lmfao
higher ideal speed consumes more fuel !
Jack Knife correct but at idle it's not significant. It is better to stick to piaggio's recommendation of 1800-2000rpm to ensure proper lubrication of the engine
indeed it does but the difference is so minimal it doesn't make sense to lower the idle speed and decrease proper lubrication of the engine
Can I use this method for a 4stroke 49cc? thanks
Absolutely. A lot of people avoid tuning the idle mix but I think that is one of the most important part of carb tuning as foundation before tuning anything else such as main jet. However, depending on your carb it your idle mix screw could be an air screw or fuel screw like I mentioned in the video. Different carbs also have different idle mix screw caps. On my 4-stroke Honda Ruckus, it uses a Keihin carburetor that had a D-shaped idle mix screw that required a special tool/socket. An easy trick (if you have steady hands) is to dremel a slot into the screw so you can use flat blade screwdrivers!
+FIFTYmil Thanks
i have 125cc suzuki access can u help me how can i do tunings (increase power) & what's the product name u use... # FIFTYmil
amar machra Check out my other episodes - particularly episode 10! That will give you a huge power boost
FIFTYmil why would you say this method can tune a 4 stroke ?
why so high rpm on idle? 1200 is more then enough.
Luke V. Short answer: the figures are set by piaggio service manual. But typically small engines (50cc) idling rpms are roughly 2000rpm for several reason. One of them is to ensure sufficient lubrication for moving parts
Factory guidelines ensure proper lubrication of moving parts
I don't hve any gas intake from the fuel line, do you think is the thing coming from the tank?
Sorry I don't think I understand your question. Can you elaborate?
Turning it clockwise makes it leaner and counterclockwise is richer. This is universal and is the same on every carb engine on earth
The last statement is incorrect. Depends on the carb as I've had both scenarios
@@FIFTYmil show me a 50 cc carb that screws this way
@@voidvincent TM32 Slide mikuni
@@voidvincent TM32 Slide mikuni
It would be nice if you actually showed what you were doing.
It would be nice if you actually listened.