Flywheel nut size??

[gavgav]

hey guys just wondering if anyone knows the size of the nut that holds on the magneto on a gpx 125 at all im having abit of trouble finding the right nut

 

[aaron.blake]

i think they are 10mm or 12mm i might have one lying around

 

[gavgav]

cool let me no ive tryed a 12 too big

 

[aaron.blake]

well then it be a 10mm i will go have a look now

 

[gavgav]

it wouldnt be something stupid like a 11mm would it

 

[aaron.blake]

na just had a look and im my jialing 125 i got a 10mm bolt i got heaps lying around if you wanted one

 

[n1ck]

they are normaly 10mm x 1.25 thread flange nut
and take a 14mm spanner

 

[gavgav]

just tryed its not its alittle bigger then that nut but smaller then a 12

 

[aaron.blake]

hmmm =S dont know then maby you have an 11 or 10.5 or somthing =S

 

[gavgav]

yeah will have to see tomorrow go to a special nut and bolt shop

 

[Poulsen8r]

Use a 1/2 inch or a 7/16... if any nut doesnt exactly fit a regular metric spaaner then it has to be imperial...

 

[gavgav]

its the inner thread size
not the nut size

 

[n1ck]

it will 99.99 % be metric but who knows with some chinesse stuff these days
the other day metric thread and imperial outer

you havent hit the crank at all to remove the fly wheel ?
i get customers every now and than asking how to fix a flaird crank thread cause they smacked it with a hammer

 

[gavgav]

nope used a plywheel puller

 

[rossetti]

measure it?

 

[headsmess]

could be metric fine... m10x1.25 or 1.0 pitch, etc etc.... wheres the original nut? try um, a bmx axle chances are its what you want.

imperial? wtf? only imperial thread ive come across in anything chinese/japanese is the glowplug on a nitro engine... 1/4 x 32 tpi or unef... had fun tracking down one of those taps... same place that does me left hand taps...

even a puller can flare the shaft though...

 

[gavgav]

so whats the best bet if it has flared the shaft

 

[n1ck]

grind the flared part of it down and run a die back over it
should recut it easily you can also get a thread file from bursons just make sure it has the right thread pitch on it

 

[headsmess]

id be inclined to invest in the thread file myself, they can come in handy... if you arent careful with a die, you run the risk of stripping your thread, and that means...new crank time