Stand crank on end, or lay it flat?
#17
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
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..
#18
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
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.
#19
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
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?
![Stick Out Tongue](https://rennlist.com/forums/images/smilies/tongue.gif)
#20
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
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
#26
Rocket Scientist
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
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.
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)