FrankenHammond- Bigger motor and blade speed

Discuss the coveted printers saw

Moderator: crzypete

Post Reply
crzypete
Posts: 1691
Joined: Thu Dec 16, 2004 10:45 am
Location: New York State
Contact:

FrankenHammond- Bigger motor and blade speed

Post by crzypete »

So my quest to hot rod my hammond is almost complete. Soon, I will compile a thread listing all of my alterations.

My last step is upping the motor size. I am currently running a 1hp motor on both of my saws. I was thinking a 2hp would really provide a good amount of juice to power that badboy. Of course on searching eBay I found a 3hp that I actually won for less than the 2hp that I was watching. It came today. It is used but in excellent condition and runs.
Image

A close-up of the motor plate- It is strange under HP it says "air over TE" I am hoping this is funny speak for TEFC (Totally Enclosed, Fan Cooled) But I am slightly worried that it has something to do with needing to be in a breezy spot, like on a fan
Image

Anyways, This motor is a 3450 rpm job, which is just about double the speed of the original 1hp. This is intentional as the original blade speed is slower than a standard woodworking saw. The new higher speed motor will allow me to up the speed while putting a smaller sheave on thus allowing me to keep the original blade guard.

The question is what is the ideal speed? I am guessing that the smaller diameter blade should spin at a faster rpm to match the same sfpm of a bigger blade. Anyone have any thoughts?

P
nektai
Posts: 1019
Joined: Fri Dec 17, 2004 9:34 am
Location: Long Island, NY
Contact:

Post by nektai »

I think a call to Forrest would result in the answer.
crzypete
Posts: 1691
Joined: Thu Dec 16, 2004 10:45 am
Location: New York State
Contact:

Post by crzypete »

I posted over at Practical machinist with the Air over TE bit and it seems they are giving me bad news- This motor is designed to be used in a breezy spot such as a fan. I have posted more info to find out whether I should start looking for another motor rather than waste time setting this one up. I guess you really do get what you pay for.

http://www.practicalmachinist.com/vb/sh ... post956427

Looking into my crystal ball, a call to Forrest is on my future.

pete
guzziguy
Posts: 796
Joined: Thu Dec 16, 2004 7:17 pm
Location: Western NC
Contact:

Post by guzziguy »

pete

I might have a motor for you. 3HP single ph (220). I'll check the speed om it today.

guzziguy
Packard V8
Posts: 12
Joined: Fri Oct 03, 2008 12:12 pm

Post by Packard V8 »

FWIW, that Baldor 3hp motor will probably last forever in your application. It is designed to need cooling air moving over it when it is fully loaded to 3hp in continuous duty. It is functionally next-to-impossible to load it like that a Hammond like that unless you choose to rip a truckload of 8/4 oak end to end.

thnx, jack vines
crzypete
Posts: 1691
Joined: Thu Dec 16, 2004 10:45 am
Location: New York State
Contact:

Post by crzypete »

Hi Jack, welcome to the forum and thanks for the information. I am thinking I will be putting it on my secondary hammond which is currently 3Ø. I have been happy running my arbored hammond and have been pleased with the cutting strength. Perhaps it is just the fact that my brand new blade is sharp.

Pete
Post Reply