Ditmar/Gayle on fri 20 feb 98
Very often a pulley or drive wheel, metal, plastic or otherwise, will get
glazed or polished. This is just from the constant rubbing during use, and
/ or foreign matter getting bonded to the wheel. Sometimes a metal drive
will look like a mirror.
What you need to do is slightly roughen the surface again. Depending on
the type of drive you have, you'll need to adjust your technique
accordingly.
I've used sandpaper, preferably silicon carbide in the 300 grit range, to
take the "glaze" off drives. Don't rub back and forth by hand, you may
create a flat spot. While turning the wheel, or whatever, gently hold the
paper up to the surface. For grooved pulleys just fold the paper to get
inside. If there is crud on the wheel, you'll notice it coming off. If it's
too polished, you'll notice a dulling . ( For motor drives I'll just turn
them on and bring the paper up to the spinning surface. DON'T do it if you
have belts attached, or feel inexperienced with any part of the system or
technique !! )
As for belts, spring for a new one occasionally, if practical. They do age
and crack, losing pliability. Any oils, will make them slip. (ATF-automatic
transmission fluid IS an oil...don't use it.) Belt dressings increase the
friction by making the surfaces slightly tackier. They're good for grip,
but at times make a noise worse. Try vigorously cleaning the belt with a
dampened cloth, treating with a product like Armor-All and letting the belt
dry thoroughly before use. ( Belts have gotten the sandpaper treatment at
times too. Try it. )
Hope this helps cure some headaches. .........if not, after you take the
hammer to all those pots as a catharsis, glance towards the wheel to see if
it takes the hint.
It could be next.
From Alohaland, Ditmar.
| |
|
