aluminum winch plate, what thickness needed? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Fabrication Shop > aluminum winch plate, what thickness needed?

Premium LED Lighting by VISION X, Proudly sold at ROCKRIDGFS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectCess Recovery Gear Snatch Tow Strap OffRoad @ ROCKRIDGE4WD

Reply
Unread 12-30-2008, 06:17 AM   #1
muddy93
Registered User
1987 FSJ Wagoneer 
 
Join Date: Aug 2007
Location: Templeton, Indiana
Posts: 1,906
aluminum winch plate, what thickness needed?

ok, hypothetical(sp) question;
lets say that someone had some1/2" thick 6061-T651 aluminum plate just lieing around. would it be suitable for making a winch plate for the front of a jeep?

__________________
maroon 1987 Grand Wagoneer. stock for now...
muddy93 is offline   Reply With Quote
Unread 12-30-2008, 06:51 AM   #2
xxxflhrci
Registered User
 
Join Date: Jul 2003
Location: South
Posts: 3,650
I doubt it.
xxxflhrci is offline   Reply With Quote
Unread 12-30-2008, 07:28 AM   #3
Unlimited04
This post/info=my opinion
 
Unlimited04's Avatar
2004 LJ Wrangler 
 
Join Date: Dec 2005
Location: Colorado
Posts: 23,305
i wouldn't use aluminum for a winch mount on a vehicle. use 1/4" steel. steel has a near infinite fatigue life, aluminum does not.
Unlimited04 is offline   Reply With Quote
Unread 12-30-2008, 11:30 PM   #4
my-jeep-earl
Registered User
1971 CJ5 
 
Join Date: May 2008
Location: California
Posts: 813
I'm guessing the thickness of the aluminum should be a minimum of, say, one foot, might get away with 9".
my-jeep-earl is offline   Reply With Quote
Unread 12-31-2008, 01:11 AM   #5
fratis
......
 
fratis's Avatar
1991 YJ Wrangler 
 
Join Date: Dec 2003
Location: Hale'iwa, Hawai'i
Posts: 4,850
when dealing with aluminum i always up the thickness a step or two. if youve got 1/2" that would be the way to go. 1/2" aluminum in that small a piece would be very strong. where you will run into trouble is creating the front and back pieces. a traditional winch plate has a bend in the front and back. this is to make it stronger and keep the plate from flexing as the winch will be pulling from near center of the plate (the weakest part). you can make the upright portions out of 3/8" thick stock. to weld 3/8" to 1/2" aluminum will take a pretty buff machine. my 185amp tig will top out with 1/4" aluminum. most in the 4 wheeling world are scared of aluminum but its just now starting to catch on with rockers and skids being made of the material. concert trussing is almost all made of aluminum. these are pulled into place by winches or "motors." they can hold a tremendous amount of wieght. apples and oranges i agree, but you get the point. U2 was the only concert ive worked that used steel truss but that was by far the largest stage ive ever seen.
fratis is offline   Reply With Quote
Unread 12-31-2008, 01:12 AM   #6
Matt Gertsch
www.lp.org
 
Matt Gertsch's Avatar
1999 XJ Cherokee 
 
Join Date: Jan 2005
Location: Nor Cal
Posts: 8,862
Nope, 6061 T6 isn't meant for bending. It'll usually snap and tear before it bends. Likewise, it'll do the same thing when the stresses from the winch are applied to it.
Matt Gertsch is offline   Reply With Quote
Unread 12-31-2008, 01:14 AM   #7
Matt Gertsch
www.lp.org
 
Matt Gertsch's Avatar
1999 XJ Cherokee 
 
Join Date: Jan 2005
Location: Nor Cal
Posts: 8,862
Quote:
Originally Posted by fratis View Post
when dealing with aluminum i always up the thickness a step or two. if youve got 1/2" that would be the way to go. 1/2" aluminum in that small a piece would be very strong. where you will run into trouble is creating the front and back pieces. a traditional winch plate has a bend in the front and back. this is to make it stronger and keep the plate from flexing as the winch will be pulling from near center of the plate (the weakest part). you can make the upright portions out of 3/8" thick stock. to weld 3/8" to 1/2" aluminum will take a pretty buff machine. my 185amp tig will top out with 1/4" aluminum. most in the 4 wheeling world are scared of aluminum but its just now starting to catch on with rockers and skids being made of the material. concert trussing is almost all made of aluminum. these are pulled into place by winches or "motors." they can hold a tremendous amount of wieght. apples and oranges i agree, but you get the point. U2 was the only concert ive worked that used steel truss but that was by far the largest stage ive ever seen.
I've made trusses for Morpheus, they see nowhere near the stresses that a winch plate will see.
Matt Gertsch is offline   Reply With Quote
Unread 12-31-2008, 11:34 AM   #8
fratis
......
 
fratis's Avatar
1991 YJ Wrangler 
 
Join Date: Dec 2003
Location: Hale'iwa, Hawai'i
Posts: 4,850
imo in this application the fact that 6061 isnt meant for bending is moot. 6061 is designed to be used in plate form and not meant to be fabricated using bends. 6063 is the choice of aluminum for making bends. in this application neither will bend to the point of snapping. true 6061 has a tendency to show signs of cracking when bent. but we are talking 90* bends here, not slight deflections. a winch on a plate is not going to pull the plate to the point of creating a 90* or even a 20* bend on a line. the only way it would do that is if you attached only one side to the framerail and then winched your vehicle sideways. it isnt going to simply snap when pressure is applied. anyone who has worked with aluminum has substituted 6061 for 6063 out of necessity and made slight bends in it and it does fine. if an aluminum winch plate is going to fail it wont matter what type its made of.
quick google search;
http://dodgeram.org/bill_s/front_bumper.htm

this one even mentions 1/2" 6061
http://www.autotrucktoys.com/toyota-...r-PRD3126.aspx
fratis is offline   Reply With Quote
Unread 12-31-2008, 12:57 PM   #9
muddy93
Registered User
1987 FSJ Wagoneer 
 
Join Date: Aug 2007
Location: Templeton, Indiana
Posts: 1,906
thanks to everyone for all the replies.
although I'm still considering the aluminum(as a last resort kind of thing), I think I'm just going to try to find some steel to use. I'm thinking that I may want to re-do the bumper(maybe add a stinger) anyway, so startring with a steel plate for the winch seems like it may be the way to go.

so, my next question, would 1/4" steel be thick enough for the winch plate, or should I look for 5/16" or 3/8" ?
__________________
maroon 1987 Grand Wagoneer. stock for now...
muddy93 is offline   Reply With Quote
Unread 12-31-2008, 01:53 PM   #10
Scotch740
Registered User
2005 LJ Wrangler 
 
Join Date: Apr 2004
Location: Charlottesville VA
Posts: 2,327
1/4" is common for winch plates. I think some commercial ones even use 3/16".
Scotch740 is offline   Reply With Quote
Unread 12-31-2008, 06:02 PM   #11
Matt Gertsch
www.lp.org
 
Matt Gertsch's Avatar
1999 XJ Cherokee 
 
Join Date: Jan 2005
Location: Nor Cal
Posts: 8,862
Quote:
Originally Posted by fratis View Post
imo in this application the fact that 6061 isnt meant for bending is moot. 6061 is designed to be used in plate form and not meant to be fabricated using bends. 6063 is the choice of aluminum for making bends. in this application neither will bend to the point of snapping. true 6061 has a tendency to show signs of cracking when bent. but we are talking 90* bends here, not slight deflections. a winch on a plate is not going to pull the plate to the point of creating a 90* or even a 20* bend on a line. the only way it would do that is if you attached only one side to the framerail and then winched your vehicle sideways. it isnt going to simply snap when pressure is applied. anyone who has worked with aluminum has substituted 6061 for 6063 out of necessity and made slight bends in it and it does fine. if an aluminum winch plate is going to fail it wont matter what type its made of.
quick google search;
http://dodgeram.org/bill_s/front_bumper.htm

this one even mentions 1/2" 6061
http://www.autotrucktoys.com/toyota-...r-PRD3126.aspx
IIRC, we used 4043 when we had to bend it up a lot. It's a gooey alloy that bends really well and machines like butter. It welds pretty nicely but stays pretty soft even after heat treatment.

I've got an XJ. Our winch plates are much different from Wrangler plates. I forget that you guys can just drop a plate to the top of the bumper.

I was envisioning something along these lines when we were talking about a winch plate:

Matt Gertsch is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.