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Wife's Grandfathers old Delta Unisaw

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Forum topic by Everett1 posted 07-20-2012 01:31 AM 1422 views 0 times favorited 5 replies Add to Favorites Watch
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Everett1

208 posts in 1185 days


07-20-2012 01:31 AM

So, been doing a little research. Looks like it has a Bullet motor. Only 1 HP, but some say thats different because of the type of motor it is? Hoping someone smarter than me on this can explain why. I’m planning on refurbing it, I can’t wait to get it home (it’s in NJ rightnow)

I’m wondering what everyone’s input is on, anyone experience this saw, any tips, etc. I’m excited as I think I have something good on my hands

Thanks again everyone!!

Ev

-- Ev in Framingham, MA


5 replies so far

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Scot

344 posts in 2047 days


#1 posted 07-20-2012 02:48 AM

The difference in (horsepower) on those heavy motors usually found in cabinet saws verses the new lightweight motors is really the torque generated and how it’s generated. That old motor on that saw is very heavy with most of the weight in the armature. The more weight you have spinning the higher the torque. So a 1 HP motor that is a heavy frame design (like on a Unisaw) can seem like it has more H.P. than a newer style lightweight 2 H.P. motor found on contractor and bench top saws.

The way the smaller lightweight motors generate torque is by increasing rpm, think of a router vs a shaper . Routers run at 10-20k plus rpm to develop the torque needed to keep the bit from stopping the motor as soon as it comes in contact with wood. A shaper is spinning at 1800-7500 rpm depending on the make.

Once you get those heavy motors up to speed, they don’t stop very easily and like to throw things back at you !

-- If the old masters had power tools, they would have used them. So get off your damn High Horse.

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Scot

344 posts in 2047 days


#2 posted 07-20-2012 02:48 AM

BTW- Nice saw

-- If the old masters had power tools, they would have used them. So get off your damn High Horse.

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SnowyRiver

51451 posts in 2132 days


#3 posted 07-20-2012 02:52 AM

Great get…I love those old machines.

-- Wayne - Plymouth MN

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Everett1

208 posts in 1185 days


#4 posted 07-20-2012 03:14 PM

as far as splitter/riving knife; any suggestions? I know the blade guard is there, so maybe my question will be answered once I get back in front of the saw.

-- Ev in Framingham, MA

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b2rtch

4323 posts in 1700 days


#5 posted 07-20-2012 03:23 PM

Everett, you might want to look at this:
http://lumberjocks.com/b2rtch/blog/29941

-- Bert

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