possibly found the reason for..

[banderson]

'delta mics' spacer bolts breaking! :clap:

i found this on my valver too but it didnt occur to me till i tried to fit 2 sets of 15mm spacers to my 182 and hearing horror stories of the bolts breaking.

when fitting the spacer i found it wasnt sitting flush with the disc face!! therefore when the bolts are tightened, it is slightly stressing the spacer inwards and when driven this gap is allowing the bolts to work loose and eventually snap with the stresses being put on them.

what the problem is, is that the center bore isnt bored deep enough into the spacer therefore making it push against the spigot instead of the disc face!

what i done was grinded a small amount of of the spigot face (hub center) back allowing these to push in closer to the disc!

did this on my valver and had no problem...

pics

note that there is a small gap between spacer and disc

better pic showing this (air gap-can see the floor between the two)

spigot and spacer touching

heres what i grinded

and now how the spacer sits

and the spigot and spacer

hope this helps people!

 

[Fred@BTM]

we have to do that on the 13mm FK ones we use

 

[banderson]

could this be the reason for the bolts breaking fred?

 

[JackJack]

Cheers for sharing that good to know.