what are your tricks to getting a fly wheel off? i am having a really hard time.

steven kline /

Apr 22, 2019 02:53PM

I have a rare bike that i screwed up the flywheel threads on. i got a new flyweel, but i cannot get the original off.. am i better off drilling and tapping new holes in the messed up flywheel to hopefully get a traditional wheel puller to work? or should i cut the thing off?

Any tricks to getting a flywheel to pop off? why are flywheels so damn hard to get off!!!!??

do you guys torch the flywheel to get some expansion before you try to pull it? have you ever fried the coils or destroyed the shaft seal doing so?

if i cut it, will it blow up in my face? the cranks on these bikes are impossible to find. so i really dont want to screw up the crank shaft...

are flywheels normally made out of hardened steel?

maybe i can cut the outer part off (with the magnets and junk) and then hopfully get a good edge to use a traditional wheel puller on?

FYI, this is on a 1981 yamaha champ... its litterally my fav bike... so i really dont want to screw this up. the champ has an ignition coil fault (that and the fact people were afraid of the shaft drive were the reasons it was discontinued so quick) i was going to try and make a PW50 stator and flywheel work and then convert the headlight and tail light to LED... stupid idea or nah?

please help this broke dick loser out?!...

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

MPB Andyrew /

spudley

Apr 22, 2019 03:23PM

Use a 2 or 3 jaw puller in the flywheel slots. Piece of cake.

Edit: MAKE SURE to leave the flywheel nut on, albeit loose, on the crankshaft when using a puller like this to avoid mushrooming the threads. If you don't have this puller they're cheap at harbor freight or you can get one through the tool rental program at an auto parts store. (edited)

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

pat splat /

ggspeed

Apr 22, 2019 05:55PM

add heat to the hub, just put in a new seal cuz it hard to take flywheel off. if u got a welder just weld on a nut then grind it off. whack the jaw puller in the middle when snugged up.

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

derek from black pipes moped gang 🌧 /

derekwinkle

Apr 22, 2019 10:28PM

The above suggestions are better but I’ve used a rubber mallet in a pinch to remove a flywheel. Just hit it, rotate and repeat.

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

♣Slew Foot♣ /

thewhitedog

Apr 25, 2019 08:25PM

Aero kroil tap it pop off in 30 seconds with a puller

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

Den 23 /

den23

Apr 26, 2019 09:52PM

Does it look like this:

If so, I too would use a hammer and tap around the circumference.

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

♣Slew Foot♣ /

thewhitedog

Apr 28, 2019 07:48AM

Leave the flywheel nut on oh by the way it isn't a motobecane is it if it is the flywheel nut is reverse threaded now that being said You Leave the nut loosen it up so it can be polled then using the puller put tension on it you don't want to put too much tension on it you want to put enough of that that say it's 25 lb or so and then you take one of those micro crackhead torches and go heat around the center staying away from the rest of it with the magnets and then once it's heated gently increase the tension a little take a step back and give it a tap

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

Born to be WillD /

Go to branch

willd

Apr 29, 2019 01:56PM

I did burn some sizing (coating) off the ignition coil trying to torch a flywheel, like last week. it still seems to work but I'm skeptical. wish I hadn't done that.

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

P D /

pdcomm

Apr 29, 2019 05:06PM

> Born to be WillD Wrote:

> -------------------------------------------------------

> I did burn some sizing (coating) off the ignition coil trying to torch a

> flywheel, like last week. it still seems to work but I'm skeptical. wish

> I hadn't done that.

If the coil still functions , just give a healthy shot of your favorite color spray paint .

It'll likely last for years to come .

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

♣Slew Foot♣ /

thewhitedog

May 01, 2019 05:52AM

Believe it or not one of the best things to use to fix the coil insulation is freaking nail polish ask your babe for some nail polish preferably enamel

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

P D /

pdcomm

May 02, 2019 12:29PM

> ♣Slew Foot♣ Wrote:

> -------------------------------------------------------

> Believe it or not one of the best things to use to fix the coil

> insulation is freaking nail polish ask your babe for some nail polish

> preferably enamel

True that^ .

Re: what are your tricks to getting a fly wheel off? i am having a really hard time.

Born to be WillD /

Go to branch

willd

May 02, 2019 01:52PM

I did nail polish it. I think ya just spend enough time on here and everyone's gotten to a point thinking what am I gonna use to macguyver the next issue back together.

MOPED ARMY

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