The Forestry Forum is sponsored in part by:


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.


Sawmill & Woodlot Magazine



Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

BRUTE FORCE Authorized Dealer

Woodshax Outdoor Vending Solutions

FARMA


Council Tool

Baker Products

ECHO-Bearcat

Arborwear



Author Topic: 12v motor to raise and lower sawhead  (Read 7118 times)

0 Members and 1 Guest are viewing this topic.

Offline jrokusek

  • Senior Member
  • ****
  • Posts: 336
  • Age: 46
  • Location: Sioux Falls, SD
  • Gender: Male
    • Share Post
    • DIY Bandmill
12v motor to raise and lower sawhead
« on: December 10, 2007, 05:42:42 PM »
I've been reading the thread entitled "Power feed plans" and it got me thinking that using a 12v motor to raise and lower the sawhead of my homebrew mill may be a good idea.  I built the mill plenty tall and have it mounted about 6" off the ground.  I stand at 6'1" and have to stretch on my tiptoes to turn the handle to move the head.  It's a shelby-style winch so I have to turn the crank about 20 times to move the head one inch. 






Someone please enlighten me as to what I need for a 12v motor.  I was thinking of using a 12v winch with power in and out to raise and lower the head but I don't know if the winch will hold the sawhead in one spot or if it will creep under a load.  So my other idea was to use one of the motors below and connect it to my winch:

http://www.surpluscenter.com/item.asp?UID=2007121016203005&item=5-1566-R&catname=electric
http://www.surpluscenter.com/item.asp?UID=2007121016203005&item=5-1623&catname=electric

Am I on the right track? 

Offline submarinesailor

  • Senior Member x2
  • *****
  • Posts: 2134
  • Age: 65
  • Location: Syria, Virginia
  • Gender: Male
  • LT15 and a wife of 45 yrs
    • Share Post
Re: 12v motor to raise and lower sawhead
« Reply #1 on: December 10, 2007, 06:00:42 PM »
Why don't you look at a 12VDC boat winch.  If the heads not too heavy, a boat winch should be able the handle it.

Bruce

Offline mike_van

  • Senior Member x2
  • *****
  • Posts: 1525
  • Age: 67
  • Location: Kent Ct. USA
  • Gender: Male
  • I need to edit my profile!
    • Share Post
Re: 12v motor to raise and lower sawhead
« Reply #2 on: December 10, 2007, 06:29:51 PM »
The first motor [link] won't work, power window motor just won't have enough snot.  The second one only has 30 inch pounds of torque, I think it's too small too, but to be sure, you'd have to put a torque wrench on the nut where your handle attaches, and see what it takes to move it.  I'm guessing you have 12V at the mill?  Any of the small ATV type winch's would work, I don't think they creep, the planetary drive in them tends to self brake them.
I was the smartest 16 year old I ever knew.

Offline pineywoods

  • Senior Member x2
  • *****
  • Posts: 4983
  • Age: 82
  • Location: Marion, Louisiana
  • Gender: Male
  • Engineering analysis-just sittin thinkin about it
    • Share Post
Re: 12v motor to raise and lower sawhead
« Reply #3 on: December 10, 2007, 06:57:12 PM »
look for a wheel chair motor. They have a worm-drive gear box built in, won't creep down. Most are 24 volt, but they are beefy and should will work well on 12 volts. Ask around rehab centers and nursing homes.  Junked wheel chairs are pretty common.
1995 Wood Mizer LT 40, Liquid cooled kawasaki,homebuilt hydraulics. Homebuilt solar dry kiln.  Woodmaster 718 planner, Kubota M4700 with homemade forks and winch, stihl  028, 029, Ms390
100k bd ft club.Charter member of The Grumpy old Men

Offline Tim L

  • Senior Member
  • ****
  • Posts: 769
  • Age: 56
  • Location: New Hampshire
  • Gender: Male
    • Share Post
Re: 12v motor to raise and lower sawhead
« Reply #4 on: December 10, 2007, 08:39:20 PM »
Turner uses a run of the mill atv winch
Do the best you can and don't look back

Offline jrokusek

  • Senior Member
  • ****
  • Posts: 336
  • Age: 46
  • Location: Sioux Falls, SD
  • Gender: Male
    • Share Post
    • DIY Bandmill
Re: 12v motor to raise and lower sawhead
« Reply #5 on: December 10, 2007, 09:31:32 PM »
I checked out the Turner Hydraulic Mill and sure enough there's a 12v winch on top of the thing.  If you all think a 12v winch won't creep this may be the easiest thing to do.  I don't have 12v to the mill yet, however I have 2 deep cycle trolling batteries that aren't always used on the boat!  :D  I can't be in 2 places at once so I can steal one of the batteries from the boat and be in business.

Offline bedway

  • Senior Member x2
  • *****
  • Posts: 1052
  • Location: northwest pa. south of erie
  • Gender: Male
  • I'm new!
    • Share Post
Re: 12v motor to raise and lower sawhead
« Reply #6 on: December 11, 2007, 11:38:40 AM »
I agree with what mike said. Find out what torque it takes to move your head up. I put a torque wrench on mine and it read 5 ftlbs to raise mine. I got a 12 volt gearmotor off ebay thats rated for 100 inlbs. Ive got a 16 tooth sprocket and a tarp switch in shipment. When i get things together ill post some results.,,,,,,,,bedway

Offline StorminN

  • Senior Member
  • ****
  • Posts: 815
  • Location: Sequim, WA USA
  • Gender: Male
    • Share Post
Re: 12v motor to raise and lower sawhead
« Reply #7 on: December 12, 2007, 08:21:30 AM »
The electric wheelchair and scooter motors are very handy, and strong. Like pineywoods said, they are mostly worm gear and therefore won't creep. They are also mostly 24VDC... I've used them as 12V in a pinch and they seem to work just fine, but 1/2 the speed.

As far as strength, here's a pic of the Rascal Scooter motor I'm using as a lift motor on my Mobile Dimension mill... I'm not positive what my mill weighs, but between the VW motor, carriage, and truss, I figure this little electric motor is raising 1,000+ lbs. I got the broken scooter for free, so my total investment here was $4 for the correct chain sprocket from Surplus Center... I believe this one was a 3/4" shaft, to give you an idea of its size.



I've also got a couple of wheelchair motors that I'm using to move my sawdust conveyors. These are totally overkill, I could go with smaller motors... but again, these motors were free, so who am I to complain? I believe these were 5/8" output shaft.






-Norm.
Happiness... is a sharp saw.

Offline mike_van

  • Senior Member x2
  • *****
  • Posts: 1525
  • Age: 67
  • Location: Kent Ct. USA
  • Gender: Male
  • I need to edit my profile!
    • Share Post
Re: 12v motor to raise and lower sawhead
« Reply #8 on: December 12, 2007, 10:01:38 AM »
Just a thought I had on using the cable/winch setup - Check those cables often, especially the imports from you know where - The little 1/8 or 3/16 don't have many strands to begin with, and if it [the cable] fails, that heads coming down - As opposed to the Acme thread type, if the chain breaks, it just sits there.
I was the smartest 16 year old I ever knew.


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

xx
Raise and lower sawhead chain size?

Started by Kwill on Sawmills and Milling

3 Replies
297 Views
Last post April 09, 2018, 02:55:51 PM
by york
xx
Engine cuts out, trying to raise sawhead

Started by RENOV8R on Sawmills and Milling

6 Replies
1148 Views
Last post June 07, 2011, 08:46:35 PM
by Tom
xx
Easier way to raise and lower saw head

Started by shortlogger on Sawmills and Milling

7 Replies
3209 Views
Last post July 11, 2013, 01:23:33 AM
by redbeard
xx
Can or should Hydraulic cylinder's be used to raise/lower saw head?

Started by GAmillworker on Sawmills and Milling

21 Replies
4314 Views
Last post July 15, 2011, 12:19:34 PM
by Log-ic
 


Powered by EzPortal