[modeleng] Belt tensioner

Hi Jeff

Thank for this kind advice.   I am a stupid old man, and am finding it 
difficult to follow your instructions.

My set-up is as follows:   The mandrel of the lathe has a  five-groove 
poly-vee pulley cut directly into its 20mm diameter.   This is the driven 
pulley.

The belt goes down vertically to a motor below the lathe, which has a driver 
pulley.   With this set-up, where do I place the tensioning ball-bearings, 
which will run on the outside of the belt.

Which is the 'slack side' on this set-up.

Your kind advice will be much appreciated, before I start cutting metal.

Cheers!   Hubert

----- Original Message ----- 
From: "Jeff D" <jeffdayman@xxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Friday, March 28, 2008 10:44 PM
Subject: [modeleng] Re: Prices


> Hi Shep,
>
> Glad to hear the knee surgery went well.
>
> With regard to your idler, be sure to put it on the loose side of the belt
> run. Between the motor and the driven pulley or pulleys the motor will 
> pull
> the belt in tightly. Don't put the idler on one of these tight runs. You
> want your idler on one of the slack runs after the last pulley has been
> driven and before the motor pulley. This is especially true with a back of
> belt idler.
>
> Good luck with it.
>
> Cheers Jeff Dayman Waterloo Ontario Canada
>
> getting warmer but had snow flurries yesterday and still 12" or more of 
> snow
> on the ground.
>
>

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