Rockwell/Delta 12/14 saw question

[Marc Jeske]

Recently acquired the above w the factory original 1 ph 3hp motor.

Will be awhile till I get it going.. In meantime wondering what should I expect for blade wind down time when I hit the off button ?

I don't want to be expecting like 15 seconds and end up with a surprise like a minute.

Also, Much diff in time between 14 and 12 blades ? (both heavy full kerf)

Thank you , Marc

[Bill Dufour]

If it is belt drive coast down should be fairly quick.
Bill D

[David Kumm]

Mine has four belts so it spools down quickly enough that I've never needed a brake. The direct drive saws spin a long time. Dave

[Marc Jeske]

Multiple belt drive as from factory.

Please address this specific saw, w the motor noted.

Or at least, w 3 ph motor.

Marc

[Dave Cav]

A 14" blade will not retract all the way below the table, and might be too much blade for your 3 hp motor.

[David Kumm]

The saw i was referring to is a Rockwell 12- basically the same saw with a 5 hp single phase motor. The phase won't affect the time to slow and I would guess a 3 hp motor will slow more quickly than a 5 hp. Dave

[Marc Jeske]

Currently using a Powermatic Contractor saw, McMinville made, at least 35 yr old, w an aftermarket newer 2 hp 1 ph internal Klixon protected motor,plain cheap toggle switch.

Never looked into this, but it almost seems like I have like a dynamic mag brake, it seemingly by some self force stops in approx 4 seconds, which I love.

Does not say anything special on motor nameplate.

All bearings great, spins up to full speed in like seems 1/4 second.

So I'm just wondering what to expect when/ if I let this one go and move to the 12/14.

Marc

[Marc Jeske]

Still asking if anyone has an idea of the wind down time I should expect ?

Marc

[Doug McKay]

12" 3hp 3ph w/static converter to 1ph. 9 seconds.

[Matt Day]

It’s not a grinder, it’s not going to take a minute to spin down. You’ll find out once you get it up and working.

[Bill Dufour]

single phase will slow quicker.
Bill D

[Chris Hachet]

If this is an issue, VFD and electronic braking. Seriously. That would be at least a 4 or 5 grand sw if you were buying it new, I assume you did not pay that much for it. VFD and a braking resistor and you are still in on the cheap.

[Chris Hachet]

VFD on a 3 phase 3 HP Unisaw, maybe 12 seconds to wind down.

[Bill Dufour]

Unless you are starting and stopping often you probably do not need a resistor with a vfd. I would try it without first. Easy enough to add something later if needed.

[Marc Jeske]

Will generally be just serious hobbyist use, one -2 man home shop.

I'm sure I'll get used to the new saw,,, just thinking safety.

The faster the wind down the better.

Marc

[Matt Day]

VFD on a 3 phase 3 HP Unisaw, maybe 12 seconds to wind down.

12 seconds? Count to 12 in your head, that’s a long time. Mine is 3-4.