Fostex B-16 - Page 28

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2)

Brake

torque

Brake

torque

is

applied

mechanically.

Pressure

is

set

by

variable

spring

force.

While

making

these

measurements

and

adjustments,

be

careful

not

to

bend

the

brake

bands.

As

brake

torque

will

change

after

cleaning,

brake

drums

and

brake

shoes

should

be

cleaned

only

when

absolutely

necessary.

If

cleaning

is

required,

use

isopropyl

alcohol.

After

cleaning,

operate

the

machine

for

a

month

of

normal

operation

before

performing

the

procedures

below.

Brake

adjustments

are

made

with

NO

power

to

the

equipment.

a)

Place

an

empty

reel

on

the

left

reel

table,

and

fasten

one

end

of

a

30"

length

of

twine

to

the

reel

anchor-

b)

Wind

several

turns

of

twine

CCW

around

the

hub

and

attach

a

suitable

spring

scale

to

the

free

end

of

the

twine.

c)

Take

a

reading

only

when

the

reel

is

in

steady

motion

since

the

force

required

to

overcome

static

friction

will

produce

a

false,

excessively

high

initial

reading.

d)

The

reading

should

be

1800

'v

2200

g-cm

(25

30.5

in-oz)

.

Fig.

5.3

FORMULA

FOR

TORQUE

CALCULATION

Tlg.cm/in.oz)

-

H

m

W

WHERE-

R

-

RADIUS

OF

HUB

(cm/in|

W

-

(g/oz)

Other manuals for Fostex B-16

Owner's Manual20 pages