thread size information please

[wattsup]

hi, does anyone know the thread size of the majic pie 1000w 48 v axle shaft, and is it metric, imperial or chinese, the nuts supplied with mine wobble on the thread of shaft and I want to replace them with a better fit if possible, as they do not inspire confidence to stay tight

[DirtyGinge]

send a pm to webby, he got some replacement nuts recently , should be able to help 

[Bikemad]

I'm pretty sure they are M14 x 1.5mm, but I could not find stainless domed nuts in that size to fit mine.



Alan
 

[wattsup]

thanks, as usual this forum comes up trumps on helpfullness, cheers guys !

[Eriknoort]

Hi wattsup,

Try the local car-tyre shop.
I got my extra nuts there for free.
Usualy they got a box with all kinds of bolts and nuts.
14x1.5 is the size.

Erik

[Webby]

Hello Mate

I think they are 14mm (locking nuts)   but I took the old one with me when I went to the merchants near where I live and he got the right ones for me.

I'm happy to post you my 2 spare that I have if you like? There only a few pence each so don't need to worry about money or anything. I not back to the UK until Tues evening 24th May.

When I get some more next time I will remember what size he said.

Anyway let me know if you want mine.

Webby

[wattsup]

thanks for the offer webby but no need bud, as i,ve already bought some from fleabay. my next challenge are the torque arms and some soldering, as i,ve shortened and tried to tidy my wiring. I will post pictures of my build. thanks again all.

[wattsup]

the thread size is NOT 14mm 1.5mm pitch, it is; 14MM X 1.25MM METRIC FINE

[Bikemad]

the thread size is NOT 14mm 1.5mm pitch, it is; 14MM X 1.25MM METRIC FINE

You must have a different axle to mine, as my Magic Pie is definitely M14 x 1.5mm, I couldn't lay my hands on my pitch gauge so I set my vernier gauge at 15mm and it lined up across the top of ten threads exactly (1.5mm pitch)!

M14 x 1.0mm, M14 x 1.25mm and M14 x 1.5mm are all referred to as as metric fine, whereas M14 x 2.0 mm is metric coarse.

If you could measure across the top of ten threads, you should be able to confirm whether it's 12.5mm or 15mm.

Alan
 

[wattsup]

could not do it with vernier, about 13mm across 10

[wattsup]

i bought some 1.5 pitch nuts and they would not screw on to 1 thread even. webby sent his spare ones to me as I pm, ed him , they screw right on good without wobbles

[Bikemad]

I've checked again, and the only details I could find from GM relating to axle threads was for the HBS hubs, which are clearly marked as being M14 x 1.5mm.
(see attachment)

From your measurements, it would appear that they have changed to a finer pitch on some axles.

Alan
 

[wattsup]

my motor, 1000w 48v majic pie external controller, was purchased,26/04/2011. the m14 part is correct, but not 1.5mm, because as mentioned, this pitch wont screw on 1 thread. it appears that you may be correct about thread change. anyway my problem is now solved to a satisfactory conclusion, thanks alan.

[Andrew]

I've had this problem too. I bought some M14 1.5 'half nuts' and they didn't fit. I've just been too embarressed to mention it  'cause I thought you all might laugh at me

[wattsup]

dear andrew, don,t you feel like a great weight has been lifted off your shoulders! coming out like you have, it must have been difficult living with the burden, and I feel for you. bet you feel great now.......feel the love