Magnet alignment for the 80cc / 66cc 2-stroke Chinese bicycle engine

[@hybriddyneguy]

Thank you! 8 years later your video is still helping under educated people like me!

[@rg8555]

I was pulling my hair out trying to start my engine. This was the problem I was having out of the box. THANK YOU! I reversed my magnet and it started right up!

[@HermanOtto-wr2nn]

Witam z Polski wreszcie ktoś poruszył temat zakładania odpowiednio magneta szacunek oczywiście zostawiam łapkę w górę miłego dnia

[@matthiasaldrich7180]

Thanks to this video my bike is up and running again I did some port matching and didn't put it back the right way thanks so much

[@cryptopyro]

Happy to be of help.

[@mattdoonanco6449]

Thanks a lot I was stumped but your video was bang on keep it up

[@billyschrock3201]

Thanks souch for the insight I was having trouble and couldn't figure out where or what I went or Did wrong I turned the magnet over alligined it as u did and she fired right up! Appreciate it and looking forward to your next video

[@poulanpiper9419]

Thanks for this video, turns out the factory put it backwards on my new engine kit.

[@anunentitledmotivatedmille7731]

poulan Piper they put my piston on backwards too they must be getting paid like a dollar a hr or something

[@danielmourao9168]

Thank you so much. I will try it later. Big thanks 🙏🏻

[@VaidasMaldzius]

I have a brand new build, everything is spot on, compression is excellent, the clutch does not slip carb is nice and tings no air leaks and still not running. I can bet it will be bad timing. I'll check tomorrow hopefully my days of frustration with this engine is over.

[@omarsolis5751]

Did you ever figure it out?

[@martymartian7833]

Well done. To the point and made it easy for visual learners (like myself) to understand. I must admit that I took some images from your video and Photoshopped them into an image which summarizes your video. I would like to share it with you if that is possible? Otherwise, fear not, it will only be used by me.

[@lukeshort7092]

Just got one of these motors..spent 3 days to get it to run...from the factory they had magnet on backwards ...didnt realize this till day 2....then still wouldnt run...because fuel filter in tank vapor locks...got that starightened out..and it finally cranked..although didnt run smooth...but its progress in the right direction atleast

[@gtrman9706]

Great info,well presented.Best audio quality ever.Thank you.Subscribed.😁😁😁

[@codelicious6590]

Thank you! I just had to replace my oil seal behind that little bastard and I got it mixed up -wasnt sure how it went back on but I got it now!! I think I will experiment with it too since I have a spare- I'm going to file about 1mm out of the trailing wall of that keyway (on the magnet) and see if I advance my timing a hair.

[@jonathanlioy7806]

Thank you for your help 🤠

[@Konstantinosmo]

Very usefull video as always. If i replace the standard 6volts magneto coil with a 12volts magneto coil, it will damage the cdi?

[@coreylopina23]

Fixed my bike, thankyou

[@joshjoshua6479]

I can't get the woodruff key on it anymore, the magnet always attracts it when I mount it.

[@KunioTaki]

Thank you! I think I put the magnet back in the wrong way, also it has a few degress play, because the woodruff key is not perfect, I guess that was my problem, because my engine runs well until, I release the clutch, then the engine lacks power. It used to be perfect before I took out the magnet. I guess it got weak, because the spark came too late, and the explosion didn't push the piston enough. However that's my theory, I don't know what really causes the loss of power.

[@anunentitledmotivatedmille7731]

Jordán József yea it would cause a late spark

[@fernandocastillo8026]

So did you replace the woodruff key or what? And also I’m trying to look at my key but I can’t remove the magnet it’s stuck on there I already took out the nut

[@SamZStuff]

Explained well. Good video.

[@Gothguitarist]

As long as the alignment is at 1 does it matter what side of the magnet you put on what side is facing out? Is it reversible my bike has spark but makes one loud pop and won't fire up

[@Westhelockpicker]

Does advancing the timing actually give it any more power

[@wilebgingy669]

If I install it backwards and try to start the motor in the reverse direction will the timeing be correct I found 1 video we’re some one cut a new keyway. but my brain says I can just flip the magnet what am I missing

[@wyattmcgeorge24]

Lol I knew that didn’t make sense! Mine was built wrong. Thanks

[@obs.vanness1604]

Thanks for posting!

[@Johnjohn-eo6mb]

How can i PUSH IN the Magneto Magnet can i use a socket with a rachet tap the sides lightly what Tool can i use

[@xero_d4rkx650]

How did you remove the magneto

[@xldh44]

with the magneto in the correct position, where in the stroke cycle should the piston be?

[@hqmonaro308]

So is there a shaved down bit on the crank shaft that needs to face 1ocklock and then put the magnet on with that facing 1 o'clock ?

[@woodrowwilson5511]

If the timing is off will this cause my engine to not have spark?

[@victorlarraondo9323]

i have a question if the magneto is too tight that cant be moved it is possible that it is causing my engine not to start ?

[@woodrowwilson5511]

Having the same problem. Did you ever find out how to fix it?

[@MilesPrower69420]

@@woodrowwilson5511 i used a slightly larger drill bit and i drilled the holes slightly larger while it was clamped in a vice. dont forget to clamp the magneeto down so the thing dosn't come apart when you drill it

[@dsh390]

Thanks. Good video. I bookmarked your channel.

[@cryptopyro]

dsh390 Glad to be of any help.

[@cryptopyro]

+dsh390 Thank you for book marking my channel.

[@zoologicalmilitia2241]

dsh390 Fabian UTB wont let me directly text you halfto go through other viewers I got a 800cc I as going to experiment with before I go to my GT80 I could not get the nut off the shaft use a socket wrench to hold the gear wheel it still turn I think it the woodruff key broke or sheared off because my timing is way out bike wont run been through 3 CDIs 3 Magnetos 3 sparkplugs this is my last hope to fix it before I trash it any way to get the nut off without an impact wrench? any other foreseeable problemI'm gonna have?

[@dsh390]

Zoological Militia there is a gear on the other side. Use a screw driver to hold it.

[@cryptopyro]

use a butterfly rattle gun to remove and install the nut, but be very gentle when tightening the nut with a butterfly rattle gun.

[@jamesgrennan]

Good clear video 👍🏻 thanks

[@cryptopyro]

Happy to be of help.

[@Gothguitarist]

Does it matter which side? Or just angle

[@H2Oredfirefox]

am wondering there's Y on it dos that mean its meant to be facing the bake of it

[@ihategyspys]

One night I was in a hurry and forgot to shut off my fuel valve. The carb flooded and the fuel went through the primer down into the magneto. I got scared and it started but then didn't start after that. Can I re use my magneto or do I need a new one?

[@kandihaldane3791]

exactly the same thing. flooded... started.... didn't start??????

[@bluckq]

You'll need a new coil the coil cannot get wet, the magneto should be fine though

[@meemorelive]

thank you

[@MeiGunner]

i cant get the bolt off

[@300werksmetalfabrication8]

Silly question, but what happens when installed incorrectly? Just down run/ start properly?

[@cryptopyro]

It is unlikely that the engine will operate. You will have spark, but the ignition timing will be outside of operational limits.

[@300werksmetalfabrication8]

Thank you.

[@victorlarraondo9323]

what if i cant see the key slot there is a nut in my bike and when i tried to remove it turns everything with the magnet any idea how to solve the problem ?

[@jamesgrennan]

victor larraondo take out the magneto and hold the magnet with a wrench . Nut is not that tight so easily removed . You can only see the key with the nut off

[@anunentitledmotivatedmille7731]

You can also stick something in your sprocket

[@freedomknight2766]

hi i lost the would craft key( the one u install on the crankshaft ) . what do u advice ?

[@AndyTrampke]

They are available on ebay. many hardware stores carry them. if you must you can make one out of a piece of hardened steel

[@Westhelockpicker]

Buy a new one from BBR

[@bootsmanaa]

great vid . helped alot :)

[@cryptopyro]

Glad to be of any help.

[@jayvlog9841]

Good video men

[@lucassimone9929]

could wrong alignment cause the motor to not start?

[@cryptopyro]

lucas simone It is quite possible that incorrect magnet alignment could be a reason why the engine would not start.

[@nicholasbuckhannon2000]

@@cryptopyro how strong should the magnet be its kinda weak on one side and kinda strong on other side not really tho is that bad please reply?????

[@Kyle-kv6ur]

@@nicholasbuckhannon2000 ever figure this out?

[@infohere1000]

you didnt say WHAT the half moon piece does

[@mouseu-tb1ct]

i need help guys my maggg is new i have to maggg neetos packs the magnet is it try u can put it on wrong cuz win i mach my wiers from cdi to maggnettto it dont give me spark only win i push it backwords so win i wier it up so wier =dont mach it gives me spark pushing it forwerds and backward i cud not start it yet with wires in matching order but i have a taster volt meeter and spark plug light taster for spark i am getting spark now and i tast my maggneeto it ohms r 330 but idk if my magnet is on wrong or if the CDI is wired wrong cuz i plug in new magneto and it did same think so i have new cdi i whant the new cdi i seen its a all in one cdi thats it like the new kid u find on mowers i seen tham being offer on other new motors whats the part nu,mber

[@AndyTrampke]

somebody needs to start producing magnets with the keyway in positions deferring by one degree a few one way or the other or produce a magnet which can be adjusted. after certain work is done to these engines many can benifit from advancing the timing a few degrees

[@ridefast591]

AndyTom I don't make many videos but I made one on how to do exactly that. And tested results

[@mbrrideitlikeyoustoleit8436]

They make ajustable timing magnet now what do you know about them can you make a new video on them zedamotorsports sale them for $25

[@СЕРГЕЙОгородников-ю2р]

Молодец

[@dest151]

Would it be better just to buy a better built motor than a chinese motor?

[@cryptopyro]

dest151 If assembled correctly, and 25:1 oil/fuel ratio is used, and the carburettor jetting is correctly optimised for the atmospheric conditions in your locality, these Chinese bicycle engines are surprisingly reliable, if they are not over revved.

[@dest151]

thanks for the info

[@СЕРГЕЙОгородников-ю2р]

А почему они неправильно шпонку ставят с завода

[@lonewolfnocb]

👍💪

[@СЕРГЕЙОгородников-ю2р]

Убрал шпонку поставил магнит прямо аж сиденье выкинуло тяга ого-го

[@arieljesus27]

it is true that these engines are damaged very quickly and become useless too fast

[@kennethrogers3687]

I never heard that. I wouldn't be surprised. The air filters are useless, sucking in dirt every second. That's not good. Engine cylinder wear and scarring. I made my own foam air filter and treated it with foam filter oil like in motorcycles. I am hoping I get a good life from this motor. I would highly recommend replacing that absolutely useful air filter immediately with a foam one. Just saying . Peace

[@mattvalmer1804]

Mine gone hundreds of miles now with no problems as long as you keep it properly lubricated and clean your bike will wear out before the motor

[@allockwood6233]

No good bike engine

[@СЕРГЕЙОгородников-ю2р]

Молодец