Stand crank on end, or lay it flat?
09-26-2011, 01:37 PM
#17
Rennlist Member
In all fairness... gravity did, effectively, create everything in known existence... and, I'm sure it could deform steel... but not over a time frame that is relevant to any of us..
09-26-2011, 02:12 PM
#18
If one were to store a crank on a shelf for 50 years, I would be more worried about the shelf deforming under the weight of the crank before I worried about the crank deforming under it's own weight.
09-26-2011, 03:03 PM
#19
Haha, this thread is still going on? I think its safe to say that a crank wont change shape due to simply being stationary... the only one arguing the other side is robsta. Maybe he knows something we dont? 
09-26-2011, 10:16 PM
#20
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When I have a crank out, I carefully weigh it with a certified scale then stand it on the flywheel end on the floor. Next, I attach a cable to the top of the crank, loop that cable straight up to the a pulley attached to the ceiling with the end of the cable hanging down close to the floor. From the end of the cable, I attach weights that add up to close to 50% of the crank's weight. This weight counteracts gravity's effects that can compress the crank's length and is the absolute safest way to store a crank.
or not
or not
09-27-2011, 02:12 AM
#26
Rocket Scientist
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Anyone can fab, not many can engineer.
It would be nice for an actual machinist who sees and deals with these tolerances on a daily basis answer this question. The last two machine shops I have been in have either had a rack designed to hold cranks, or had all the cranks standing straight up.
It would be nice for an actual machinist who sees and deals with these tolerances on a daily basis answer this question. The last two machine shops I have been in have either had a rack designed to hold cranks, or had all the cranks standing straight up.
however, I couldn't let that ridiculous line pass without protest.
