[TowerTalk] Which Thrust Bearing to Use

[charlie at thegallos.com]

<anip>
> I don't agree.  If the hole is large enough to just clear at -40C, when
> heated the entire mass will increase in volume.  The OD will get larger
> and
> the hole will get smaller and become tighter against the mast.
>
>
> 73 de
> Gene Smar  AD3F
>
>
I guess your science teacher "Back when" didn't do what mine did.  He had
a steel ball (on a handle, and a steel ring (ditto).  At room temp, the
ball would NOT fit through the ring - maybe 1/32 of interference.  You
then took the ring, put it in a bunsen burner, and hot it hot (didn't even
need to be red) - the ball fit though perfectly

Yep, the way materials expand the hole gets bigger.  We do it in the shop
ALL the time, heat a gear etc to make the hole bigger to drop over a shaft