Speed Control function

[SSWoodwrk7]

I have a SS 510 that I recently purchased. I have torn down the headstock, cleaned and lubricated. Fixed several problems but I have not resolved a speed control issue. When I increase the speed the sheaves operate as they should but the speed doesn't increase until about G or H setting. I'm wondering if the belt may be stretched out? Any ideas?

[JPG]

At slow, where is the belt riding on both the motor pulley and the idler pulley. Also is the belt tensioned at that setting.

Lastly do both movable sheaves move in opposite direction simultaneously from slow setting? Distance should be the same.

[SSWoodwrk7]

I'll check the belt location on the pulleys and belt tension.
I assume it is the belt that actually separates and collapses the sheaves on the motor. Is that right? So if the belt isn't properly tensioned then the sheaves won't move properly, affecting the speed?

How much movement should there be on a properly tesioned belt?

It does get up to full speed, it just a late starter.

Thanks

[garys]

It is a fairly simple mechanical design. If you run it without the side cover and watch what happens, you can most likely figure out why it is slow getting up to speed.

[jsburger]

It is a fairly simple mechanical design. If you run it without the side cover and watch what happens, you can most likely figure out why it is slow getting up to speed.

OMG, don't suggest running something without guards and armor on. One of those belts will surely break and slap you in the face. That is unless you are smart enough to stand to the side when observing what is happening. A few here in another thread have suggested you might be seriously injured because you didn't have an apron on or hve your sleeves rolled up.

[JPG]

It is a fairly simple mechanical design. If you run it without the side cover and watch what happens, you can most likely figure out why it is slow getting up to speed.

OMG, don't suggest running something without guards and armor on. One of those belts will surely break and slap you in the face. That is unless you are smart enough to stand to the side when observing what is happening. A few here in another thread have suggested you might be seriously injured because you didn't have an apron on or hve your sleeves rolled up.

[garys]

If you aren't smart enough to observe a running machine with the cover off, you shouldn't be attempting to repair said machine.
Observing a machine doesn't include sticking your hands in or getting your clothes close enough to get caught.
I tend to forget that most people don't have any mechanical skills and the ability to repair simple things. I was raised on a farm and as a teenager, I was expected to repair farm tractors and other machinery to keep it running through the day.
From there, I went into electronics and had jobs where I not only had to repair all the electronic devices, but every mechanical device in the system as well while the desk jockeys sat and watched because they couldn't do something as simple as operating the machine or electronic device.
As adults, we all should have the maturity to work safely on a machine or if you can't do that, have enough sense to leave it alone and take it to someone who has that sense.

[JPG]

Well stated!

[garys]

We all need to make ourselves a list of things we do and things we don't do.

My list of "not do" includes

Plumbing. (my efforts cause leaking)
Repairing computer controlled vehicles
Rebuilding automatic transmissions

My list of "DO" includes

Repairing my Shopsmith
Rebuilding simple electrical devices like alternators and starters
Installing and repairing garage doors
Residential electrical wiring
Repairing older vehicles without computers.
Pouring and finishing concrete projects
Erecting buildings
Building and repairing computers, installing operating systems and software
Wiring computer networks
Building web servers

I have a 50 year old car in my garage that has never been to a mechanic for work. All work in those 50 years was done by me in my garage. I also have a 40 year old truck that has never been to a mechanic either.

BUT, I DON"T DO PLUMBING!!

[JPG]

Just replace it all with PVC. PEX I do not know about.