Speed dial chainge without motor on

jasonvfx · Post by **jasonvfx** » Tue Jun 09, 2009 1:50 pm

I know this is a no no... but it was done.. only once. How can I tell if any damage has been done? and what kind of damage can be done?
It still turns on... runs and changes speed it is a 1998 model that has barely been used, and I am just starting to get into it (Just bought it off craigslist).

Thanks.

JPG · Post by **JPG** » Tue Jun 09, 2009 2:07 pm

jasonvfx wrote:I know this is a no no... but it was done.. only once. How can I tell if any damage has been done? and what kind of damage can be done?
It still turns on... runs and changes speed it is a 1998 model that has barely been used, and I am just starting to get into it (Just bought it off craigslist).

Thanks.

The 'problem' with changing the speed(cranking the control dial) is only an issue if 'slowing it down'. When 'slowing it down' the speed control is causing the control sheave to 'squeeze' the motor belt. Since the rest of the belt/pulleys are NOT moving, this puts excessive force/wear on the speed control quadrant gear. If turned in the other direction(speeding it up) no harm is usually done. The speed control is releasing pressure on the motor belt.

I doubt that one occurrence did any significant damage, but you are wise to not get into the habit of so doing. It can be adjusted without the motor running by turning it all by hand. Attaching the sanding disc to the spindle shaft provides a good 'handle' to turn it.

You should be able to tell the difference when adjusting speed with it running. Speeding up it turns easy. Slowing down requires more force to turn the control dial. It is a good idea to adjust speed downward slowly so as to allow the floating sheave time to adjust to the changes being made to the control sheave. You should be able to feel when it is being 'forced' by the amount of torque required to move the control dial.

robinson46176 · Post by **robinson46176** » Tue Jun 09, 2009 2:19 pm

The real problem with it is the propensity of shop visitors to walk over and give the dial a crank...

Shopsmith used to have a sketch of a lock to stop people from doing that.
Does anyone have another solution than that besides hooking the dial to an electric fence charger?

JPG · Post by **JPG** » Tue Jun 09, 2009 3:12 pm

robinson46176 wrote:The real problem with it is the propensity of shop visitors to walk over and give the dial a crank...
Shopsmith used to have a sketch of a lock to stop people from doing that.
Does anyone have another solution than that besides hooking the dial to an electric fence charger?

Connect it to the 'black' wire coming from the linecord.

Hey folks just kidding! NOT a good idea!:eek:

mickyd · Post by **mickyd** » Tue Jun 09, 2009 3:20 pm

If you look inside your access hole and see something that looks like this, you know you need to take your wallet out.

[ATTACH]4905[/ATTACH]

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robinson46176 wrote:The real problem with it is the propensity of shop visitors to walk over and give the dial a crank...
Shopsmith used to have a sketch of a lock to stop people from doing that.
Does anyone have another solution than that besides hooking the dial to an electric fence charger?

Removing the speed dial works quite nicely.