[guytzuv]

Just installed new midleburn cranks with 83mm isis fsa BB on my m3, and the non- drive side (left) is really exposed to dirt, the crank is installed on the isis which leaves the BB shell empty and exposed to dirt I even suspect that the barrings can get damaged easily this way if they're not sealed enough. My LBS says that it should be this way anyone has any experience/idea whether it's ok this way?

 

[Brian HCM#1]

Is the spindle length correct? Crank arms can only go on so far. It is normal to have the crank arm away from the BB shell.

 

[guytzuv]

and the BB can be exposed like that?
http://www.flickr.com/photos/24821895@N08/?saved=1

 

[Brian HCM#1]

and the BB can be exposed like that?
http://www.flickr.com/photos/24821895@N08/?saved=1

That's normal, shouldn't you have a lockring on the BB?

 

[guytzuv]

nop that's what I meant, I did't get any lockring with the BB. Is there one for this kind of isis BB?
btw- thx for the help

 

[Dogboy]

That is correct. FSA ISIS BB's do not use a lockring.

 

[DirtyMike]

Thats absolutly correct.

 

[Brian HCM#1]

I was always under the impression, if there are that many thread exposed it should have a lockring.

 

[MtnbikeMike]

The only time I've ever seen a lockring is on an adjustable BB where the cup is only tight enough to preload the bearings, and thus a lockring is needed to keep things from loosening.

 

[Brian HCM#1]

Maybe I'm thinking about a Race face BB.

 

[DirtyMike]

Maybe I'm thinking about a Race face BB.

Only on there hi end adjustable versions, that and shimanos

 

[ire]

Only on there hi end adjustable versions, that and shimanos

and bmx crank bbs

 

[guytzuv]

Thanks guys,
other then the BB exposed the middleburns are probably the best 165mm cranks you can get out there. look sexy rediculously light and stiff. got them after bending the g light on a stupid crash.