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The basic concept of seismic instruments is to record vibrations. Older machines use paper, ink, and a drum to record the level of vibrations.
you may have to slacken the brakes of through the holes in the backing plate also the drum is probably rusted on to the hub you may have problems gaining access from the backing plate try slackening the brakes at the rear of handbrake in between the front seats so the cables are slack the using copper hide mallet hit the drum at 9 and 3 o'clock to knock the brake shoes in towards centre of drum then see if drum is loose by rotating and listen to see if there is a scuffing noise like its catching on somethng if not try pulling it off if that doesn't do the job then you will need to slacken off the self tensioner through one of the bolt holes its a jagged spindle and it can be found in top left area of the drum you will need a slim flat bladed screwdiver and torch. Wind that back in and then repeat the first process if this doesn't work then you may have a bearing rusted onto the stub axle which is more complicted
Industrial ceramic magnets otherwise known as large rotating drum magnets, are used by the metal scrap and recycling industries. The magnets are used to separate and process metals. If you are looking to recycle one of these magnets you can find a company that uses them for recycling.
the talking drum is amazing and I think that it is from Africa
Life's drum
A seismogram. That is when an earthquake shakes a pendulum and it records it on a rotating drum.
the ground movement caused by seismic waves
cobbing drum
No. Drum brakes expand inside a rotating drum to stop the vehicle, disc brakes squeeze in against a rotating disc.
an attached pen
On the drum of a seismic recorder, the pen moves up or down according to the earthquake waves reaching it, giving a 2D record.
seismograph
"Different Drum" originally recorded by the Stone Poneys, does not appear to have been recorded by the Bangles.
The basic concept of seismic instruments is to record vibrations. Older machines use paper, ink, and a drum to record the level of vibrations.
A graphics output device that draws lines with a continuously moving pen on a sheet of paper rolled around a rotating drum
A drum brake is a brake that uses friction caused by a set of shoes or pads that press against a rotating drum-shaped part called a brake drum. The term drum brake usually means a brake in which shoes press on the inner surface of the drum.
A drum brake is a brake that uses friction caused by a set of shoes or pads that press against a rotating drum-shaped part called a brake drum. The term drum brake usually means a brake in which shoes press on the inner surface of the drum.