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noisy turntables

On the previous layout I had a Hornby TT with the motor kit. It used the good old loco motor, X04 was it? But the motor was mounted on the plastic surround and for that or some other reason it was horribly noisy. This time round I have a Peco TT, with the Frizinghall motorising kit. But that also makes an unacceptable noise. However the motor itself, if not attached to anything, is tolerably quiet. Is it noisy because I've followed the Frizinghall instructions which tell you to bolt the kit to the TT base? Do I need some rubber washers? Would it be better if the motor were not attached to the TT itself (though I'm not sure how it would reach otherwise)?

Reply to
Ed Callaghan
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Rubber mount the motor and mechanisim to the baseboard! Drive the TT spindle (meccano size spindle?) with a pulley and rubber band/belt drive.

If the motor is quiet but the motor plus reduction is noisy then the noise is originating in the mechanisim. Vibrations can be isolated (rubber mounted), dampened (lots of weight such as the baseboard) or amplified. ( a large plastic disk is ideal)

Isolation allows the vibration to occur but stops it being amplified by plastic disks or large sheets of plywood etc. Dampening is a matter of mounting together the mechanisim and a mass that has a natural vibration rate that is different. Amplification is a matter of mounting together the mechanisim and a mass that has a natural vibration rate that is complimentary and tends to move air. Boxing in the mechanisim with sound deadening can also help, in conjunction with isolation or dampening. In conjunction with plastic disks it can actually improve amplification!

Regards, Greg.P.

Reply to
Gregory Procter

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