Replies

1. 
   roc | May 30, 2013 10:56pm | #1

   The call of duty. Or don't blink you'l miss it.

   Well I know you want a serious and helpful answer.  I want to be independently wealthy just on my good looks alone.

   We can't ALL  have what we want all the time.

   So

   Until some one comes along who is serious and helpful I will stick my tung firmly in my cheek and proceed to entertain my self and maybe even you with these responses :

   Part of what we have is a question of duty rating. Maybe one motor puts out 1/2 HP at a 20% duty then she's gotta cool for 80 % of the time where as the other motor may put out 1/2 HP for 60 % of the time and cool for 40% of the period.  Meaning your two motors may produce 1/2 hp or 1 hp or what ever for a period of time . . .

   and then probably catch fire ( well trip the heat thingy more likely).

   Motors tend to have duty ratings and efficiency ratings and all like that.

   REAL motors are efficient AND can put out the rated HP for hours and hours (or days and days) all at the same time.

   That type of motor is not what we are discussing here.  As you may know the real motors cost real money such as this one

   http://www.amazon.com/Baldor-L3504-General-Purpose-Enclosure/dp/B007ZQR7QC/ref=sr_1_7?ie=UTF8&qid=1369964574&sr=8-7&keywords=baldor+2+hp#productDescription

   And this one which is similar to what Laguna put on my rather small band saw

   http://www.amazon.com/L3515-50-Phase-Input-Frame-3600/dp/B007ZQRIRK/ref=sr_1_12?ie=UTF8&qid=1369964906&sr=8-12&keywords=baldor+2+hp

   Maybe just jump ship and put one of these guys on your saw.

   Here is one fun example that never fails to entertain me when I see it.

   http://www.sears.com/shop-vac-corp-shop-vac-12-gallon-5.0/p-SPM6885842204?prdNo=3&blockNo=3&blockType=G3

   5 horse power ?

   Really ?

   From 120 v !

   For JUST $230 !

   AND . . . we get a freeeeeeee vacuum with it !

   Must have a "perpetual motion machine" built right in .

   Ha

   Ha, ha

   Hey, why not hook up the motor off this super sucker to your band saw ?  5 HP !

   Woh DUDE !

   I would like to watch the HP gauge and the amp meter when it is asked to hit 5 HP

   Better have a chronograph capable of nano seconds in the mix because that is about how long it is going to produce 5 HP.

   Do you see what I am saying here ?

   My advice would be to run the motor that is on the saw and resaw some tough stuff.  Such as 10 inch bubinga (see photo).

   Push the saw a bit.

   Listen to the machine

   Feel the motor for heat after.

   Basically see how it goes.  Then do the same with the other motor.  Keep the one on the saw that works best.

   Just for comparison sake my Baldor 2 HP propelled by 220 V  hardly gets warm let alone hot and does not bog at all, at all.

   Viola

   
1. 
   surfside123 | May 31, 2013 03:41pm | #2

   This is such a very helpful information should need band saw motor upgrade. 

2. 
   hackmeister | May 31, 2013 03:47pm | #3

   Yeah, what roc said

   roc pretty much hits it.  The difference in amps in the two motors is likely due to service factor, and the easiest way to see which is more powerful is just to try both of them and see how they do on tough wood.

   Basically service factor indicicates how much the motor can be occasionally be overloaded by without damage to the motor.  It is more of a concept related to commercial/industrial use with the motor in continuous or near-continuous operation.  The only time I have ever thermally tripped a motor in hobbiest use was resawing through 4 inch white pine for 2 hours straight (I was making lap siding) and even that was due to a vent design flaw in my (home made) enclosed bandsaw base.

    I looked at the original motor off my '90s 14" Delta bandsaw (now on my drill press) and it was rated 3/4HP with a service factor of 1.15 and 11.7 Amps.  The motor off my '70s vintage Craftsman sander is 1HP with a service factor of 1.0, and 9 Amps.  For comparision, the 1HP Marathon motor I put on the Delta bandsaw is 13.4A with a service factor of 1.15.  All motors are rated for contiuous duty.  As a side note, the reason for the musical motors was that the motor on the drill press died.

    Is the 3/4 Delta more or less powerful than the 1HP Craftsman?  I have no idea.  One is 1725 and the other is 3450, so I have never swapped them out.

   Also relevant is if the amps listed are Full Load Amps (FLA) or Service Factor Amps (SFA).  Either way, trying both out is the simplest way to find out.

3. 
   user-20876 | Jun 03, 2013 10:08pm | #5

   Awesome post

   You win for most entertaining post on the subject of motor ratings!  Thanks again.

2. 
   user-20876 | Jun 03, 2013 10:05pm | #4

   Hey - thanks for all the input guys.   I guess the only way ultimately is to test it under real-world conditions and which motor performs better.

   Side note- I've had a lot of fun tinkering with this saw since I bought it.   It was a bit neglected but I've brought it back to like-new condition.