acs boa 16mm nut to 10mm thread conversion.raaaa PICS ADDED

[energiza]

Right brought 2 nos acs boa.s from a fello rad member.and they are both large thread rears.so had a brain wave.tryed tap n di.ng the thread down to 6mm.not good.these are some proper solid threads on these boa.s       so another brainwave come to my head.took me 30 mins and a presto it only bloody worked.ive done one already.so ill be taking some step by step pics of the next one i convert today.so hopefully it will help out u fella members who have them thick arsed thread ones layin about collecting dust 

[bof]

I reckon a 10mm drill would be the easiest way . Do you need pictures ?
:-)

[GTnumber1]

I reckon a 10mm drill would be the easiest way . Do you need pictures ?
:-)

+ 1 and your never going to cut that thread smaller, change the spindles its a peace of piss just dont loose all the bearings 

[energiza]

  i did take one apart originaly and it took me about 2hrs to but all them lil bars##rd bearing back in,so gave up on that idea..these are to use on rider.solid as a rock

1st pic before and after

1st tools required lol

use them saws

wheres that chunky thread gone

[energiza]

part2 file down so level with spring holder

then 3mm drillbit to start you off

working drill sizes up from 3mm/4mm/5mm then 6mm

not the straightest of 6mm holes,but a it works

get your 6mm thread,wak on some super strenght chemical metal and put in 6mm hole.leave to dry for a day and wooo a 6mm boa is born again lol

[john4130]

i'm still using the same 10mm boa for about 15-17 years. i sent it too rob ridge who would machine it out and put sealed bearings and a 10mm axle on it. i've never had a problem with it ever.

[energiza]

Best brakes ever i say.the threads where 16mm nut size originally.so instead of killin a good set of forks 10mm nut thread size was the way forward for me

[ozone]

Be interesting to see how the mod holds up under use - repeated heavy braking etc.   

[energiza]

Be interesting to see how the mod holds up under use - repeated heavy braking etc.   

the chemical metal is usally pucker.my mate used it on his cracked forks years ago and the forks are still alive

[bof]

I stand by my original post as the best method . You have got to be mad to even consider using that brake in anger 

[dan-dare]

and use a centre punch before drrrrrrriiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiilllllllllllllllllllllllllllllllllllllllllllllllllllllliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiinnnnnnnnnnnnnnnnnnnnnnnnnnnnnnggggggg. 

[energiza]

and use a centre punch before drrrrrrriiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiilllllllllllllllllllllllllllllllllllllllllllllllllllllliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiinnnnnnnnnnnnnnnnnnnnnnnnnnnnnnggggggg. 

:daumenhoch:i need to invest in one m8..lol

[GTnumber1]

and use a centre punch before drrrrrrriiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiilllllllllllllllllllllllllllllllllllllllllllllllllllllliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiinnnnnnnnnnnnnnnnnnnnnnnnnnnnnnggggggg. 

+ 1 

[Betty]

Chemical metal? Is that some sort of glue?

You'd trust a brake thats been glued together... 

[energiza]

  lol i forgot to say in above posts.that the drilled hole as to be tap n di.ed out.so there is a thread inside to screw the 6mm thread into.the chemical metal is a kinda glue.but its made from 2 tubes of stuff that react together when applyed to any metal source.creating a bond as strong as a weld.almost like metal.this was squeezed into hole then 6mm thread screwed in after.so should be strong enough

[bof]

11mm drill bit


dirt bike brake slot for 6mm spindle


drill in position



hole drilled brake installed 5 minutes later

[energiza]

  owwwww poor frame.i could.nt drill a frame out just for a brake.ouchhhh

[Betty]

lol i forgot to say in above posts.that the drilled hole as to be tap n di.ed out.so there is a thread inside to screw the 6mm thread into.the chemical metal is a kinda glue.but its made from 2 tubes of stuff that react together when applyed to any metal source.creating a bond as strong as a weld.almost like metal.this was squeezed into hole then 6mm thread screwed in after.so should be strong enough

Makes more sense now... 

Bof's method takes the win though... 

[bof]

The dirt bike deserves no sympathy. 
but a brake that works far outweighs damage that can be done from a flipped manual