Table saw running fast

[bmwpower]

What would cause a table saw to run faster than normal?

 

[bchee]

Police or rabid dog??

 

[Dr.JohnnyFever]

What brand, model, type of drive, and type of motor?

 

[Stuey]

lol! That's terrible!

bmw - maybe worn/loose belts? I'm thinking power distribution or mechanical problem. Is the torque/cutting ability of the motor affected as well?

 

[bmwpower]

makita 2708

What brand, model, type of drive, and type of motor?

 

[Dr.JohnnyFever]

Hmmm, probably a direct drive universal.

 

[swgray]

I would think the only thing that would effect the speed would be if you put a lighter blade on it. But only if it had a large heavy blade on it previously.

It probably only sounds faster because of a gear whine or worn brushes. If that model has braking when shut off, it will just spin for a longer time if the brushes are worn or packed with debris.

 

[justinking060310]

How do you know how fast is too fast?

I have the Craftsman zipcode cab. saw -- I notice a slight speed increase when I switch between a Freud GLR blade and a Forrest WWII blade... The more expensive Forrest blade spins faster BTW --

 

[wilbilt]

120V saw now receiving 240V?

 

[Uncle Buck]

120V saw now receiving 240V?

You beat me to it Wil, I did that one time, it can be much easier than you think! 120 stuff will run to beat hell for the short amount of time it is being fed 240!

 

[wrenchr]

I guess that is better tha running slow!!! lol

 

[Uncle Buck]

I guess that is better tha running slow!!! lol

Oh yea, they run like mad for about 60 seconds!

 

[Vicegrip]

If it is a belt drive the belt might have jumped off the blade shaft pulley and is now running on the shaft. The motor weight will produce enough friction to spin the blade up and it will spin so fast the blade will Sing. Ask me how I know...

 

[wilbilt]

If it is a belt drive the belt might have jumped off the blade shaft pulley and is now running on the shaft. The motor weight will produce enough friction to spin the blade up and it will spin so fast the blade will Sing. Ask me how I know...

Now, that's a good answer.

 

[bmwpower]

Hmmm, probably a direct drive universal.

How would a bad universal make it go faster? I would think it might be noisier, but not faster.

I would think the only thing that would effect the speed would be if you put a lighter blade on it. But only if it had a large heavy blade on it previously.

It probably only sounds faster because of a gear whine or worn brushes. If that model has braking when shut off, it will just spin for a longer time if the brushes are worn or packed with debris.

It's my Dad's saw and he's had it for close to 10 years or so. He swaps blades here and there so I would think it wouldn't be due to a blade, but I'm not sure of the particulars around what he was doing at the time. Usually he is pretty good with diagnosing problems with his tools (mostly wood working stuff). I will have to check the brushes to see what's up...

How do you know how fast is too fast?

I have the Craftsman zipcode cab. saw -- I notice a slight speed increase when I switch between a Freud GLR blade and a Forrest WWII blade... The more expensive Forrest blade spins faster BTW --

Still not sure it would be due to a blade change. I think it changed speed with the same blades on it.

120V saw now receiving 240V?

No 240v in his garage!

If it is a belt drive the belt might have jumped off the blade shaft pulley and is now running on the shaft. The motor weight will produce enough friction to spin the blade up and it will spin so fast the blade will Sing. Ask me how I know...

Any idea if this is a belt driven model? I don't think it is, but I could be wrong.