BB30 and moisture?
Moderator: robbosmans
-
- Posts: 783
- Joined: Wed Dec 07, 2011 1:26 am
- Location: California's country side
Many of us use the freezer method on the crank spindle, wouldn't there be condensation as the crank come back to room temperature. trapped in the space between the 2 bearings?
I am referring to some of the BB30 shells are fully enclosed, although some have holes all over for Di2, those are not a concern.
I am referring to some of the BB30 shells are fully enclosed, although some have holes all over for Di2, those are not a concern.
-
- Posts: 938
- Joined: Mon Jan 24, 2011 8:09 pm
PoorCyclist wrote:Many of us use the freezer method on the crank spindle, wouldn't there be condensation as the crank come back to room temperature. trapped in the space between the 2 bearings?
I am referring to some of the BB30 shells are fully enclosed, although some have holes all over for Di2, those are not a concern.
Isn't there a hole in the bottom bracket shell to allow moisture out? Nothing is water proof, but the bearings are sealed and it shouldn't be a problem I would think?
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
-
- Posts: 284
- Joined: Tue Dec 20, 2011 12:43 am
- Location: Los Angeles, CA
Zig is correct. Most if not all BB30 shells have a drainage hole that allows for excess moisture to drain.
-
- Posts: 783
- Joined: Wed Dec 07, 2011 1:26 am
- Location: California's country side
Just looked at my BMC, 360 degrees not a hole to be found.. but the shell is machined nicely and coated with something though.
-
- Shop Owner
- Posts: 1980
- Joined: Sat Jun 13, 2009 4:02 am
- Location: NoVA/DC
a nitrogen purge prior to installation would do it.
-
- Posts: 783
- Joined: Wed Dec 07, 2011 1:26 am
- Location: California's country side
Previously with the freeze spray I can see frost on the spindle.
I have to use a temp gun to check how cold I am getting it.
I guess nothing is a true vacuum here and not really corrosive so probably doesn't matter.
I was curious about the orientation of the C-clip, would it be better to have the opening facing the bottom?
I have to use a temp gun to check how cold I am getting it.
I guess nothing is a true vacuum here and not really corrosive so probably doesn't matter.
I was curious about the orientation of the C-clip, would it be better to have the opening facing the bottom?
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
irrelevant...
The amount of moisture / humidity in the enclosed space doesnt "grow" as the temp changes. It would have been in there in any case.
whipe it before you seal it up if you want and roll.
The amount of moisture / humidity in the enclosed space doesnt "grow" as the temp changes. It would have been in there in any case.
whipe it before you seal it up if you want and roll.