Possible Trailer Frame

Ask questions about Harbor Freight trailers, or questions about building your own...

Possible Trailer Frame

Postby mach58 » Sun Aug 15, 2010 12:06 pm

New here but have gotten the bug. A local truck service center has this trailer setting off the the side of the lot. It's really heavy duty, probably way overkill, but I can get it cheap. 5200 pound axle, very heavy frame members and a 5' X 8' size with 15 inch rims. I would pull it behind a full size pickup or a large SUV, so weight won't be a real problem. What do you think?
Image

Craig
Last edited by mach58 on Sun Aug 15, 2010 4:44 pm, edited 1 time in total.
mach58
Teardrop Inspector
 
Posts: 2
Joined: Sun Aug 15, 2010 11:47 am
Location: Greenfield, IN

Postby Larry C » Sun Aug 15, 2010 3:51 pm

Leave it there..........
"If its worth doing it's worth doing Light"

http://www.tnttt.com/viewtopic.php?f=50&t=35852
Larry C
500 Club
 
Posts: 732
Images: 78
Joined: Sun Dec 27, 2009 9:37 am
Location: Finger Lakes

Postby angib » Sun Aug 15, 2010 4:15 pm

It's curious how most of the trailer is really heavy-duty, but the one strength-critical part, the A-frame, is just angle and so not very strong at all.
User avatar
angib
5000 Club
5000 Club
 
Posts: 5783
Images: 231
Joined: Fri Apr 30, 2004 2:04 pm
Location: (Olde) England
Top

Postby mach58 » Sun Aug 15, 2010 4:49 pm

Didn't notice the a-frame being angle iron. Thanks for the reply.
mach58
Teardrop Inspector
 
Posts: 2
Joined: Sun Aug 15, 2010 11:47 am
Location: Greenfield, IN
Top

Postby Larwyn » Sun Aug 15, 2010 4:52 pm

angib wrote:It's curious how most of the trailer is really heavy-duty, but the one strength-critical part, the A-frame, is just angle and so not very strong at all.


At the place I used to work we had a tank mounted on a trailer for purpose of containing transformer oil when servicing the tap changers on large electrical transformers. The oil was then filtered and pumped back into the tap changer after servicing. The frame had to be strong enough to support the weight of the tank when filled with transformer oil. It had a large, heavy duty, drop leg jack at each corner to support the frame and filled tank. The running gear however was only required to be heavy duty enough to transport the empty tank to the next job. That little trailer may have been used in a similar capacity, but it's just a guess.
Larwyn

Keeper of the Most Out Of Control Shop (2005)

I feel bad for the man that cannot spell a word more than one way. Mark Twain
User avatar
Larwyn
Mad Kilted Texan
 
Posts: 1658
Images: 210
Joined: Sun Jun 20, 2004 12:06 pm
Location: Kerrville, Texas
Top

Postby rladams39 » Mon Aug 16, 2010 4:14 pm

Actually it looks like a chassis from an air compressor. if you used lighter springs then it could work out.
User avatar
rladams39
Teardrop Master
 
Posts: 124
Images: 30
Joined: Fri May 07, 2010 5:42 pm
Location: Indiana
Top

Postby Larwyn » Mon Aug 16, 2010 6:37 pm

rladams39 wrote:Actually it looks like a chassis from an air compressor. if you used lighter springs then it could work out.


That could easily be, my guess was just based on my own experience, though I have used a trailer mounted air compressor, I never actually closely examined one............ :beer:
Larwyn

Keeper of the Most Out Of Control Shop (2005)

I feel bad for the man that cannot spell a word more than one way. Mark Twain
User avatar
Larwyn
Mad Kilted Texan
 
Posts: 1658
Images: 210
Joined: Sun Jun 20, 2004 12:06 pm
Location: Kerrville, Texas
Top

Postby bve » Mon Aug 16, 2010 8:24 pm

You wouldn't get a whole lot from that frame that is appropriate for a teardrop.

At 5200 lbs capacity the axle and springs are about 4x too much. The tires and rims although 15" are on 8 bolt hubs. As Andrew pointed out the A-frame is weak compared to the rest of the frame and the mounting for the coupler is questionable.

In my opinion the only good thing about this for a teardrop is the fact it is 5x8, you would never tax the existing suspension enough to like it, it will bounce like a SOB and be a real bugger to tame.

Walk away you will find something better.


Burke
Burke

KISS > COMPLEX
Image
Image

Build threads converted to PDFs.
As of 2008-08-08 I have added more build threads to the pdf collection
User avatar
bve
500 Club
 
Posts: 694
Images: 98
Joined: Sat Aug 25, 2007 1:44 am
Location: Edmonton, Alberta, Canada
Top

Postby 48Rob » Tue Aug 17, 2010 5:12 am

I'll agree that a better trailer could be found, but...

The tongue, though "weak" compared to the rest of the trailer, is plenty for a teardrop.
The heavy steel frame can be lightened by removing the top rails and some of the extra crossmembers.
The heavy duty wheels and axle are okay.
The springs can be reworked (leaves removed) to get an acceptable ride, or simply replaced with a set to match your completed weight.

The one thing I'd be most concerned about is the axle placement fore and aft on the frame.
If you have to move it to make it work with the design of your choice, it may or may not be easier to start from scratch and have a custom frame made.

If you can get it really cheap, it could work.

Rob
Waiting for "someday" will leave you on your deathbed wondering why you didn't just rearrange your priorities and enjoy the time you had, instead of waiting for a "better" time to come along...
User avatar
48Rob
Super Lifetime Member
 
Posts: 3882
Images: 4
Joined: Thu Nov 17, 2005 6:47 pm
Location: Central Illinois
Top

Postby Shadow Catcher » Tue Aug 17, 2010 6:54 am

Look at the gauge of the steel in the A frame, it ain't Harbor Freight 8)
User avatar
Shadow Catcher
Donating Member
 
Posts: 6008
Images: 234
Joined: Sat Apr 11, 2009 8:26 pm
Location: Metamora, OH
Top

Postby Alphacarina » Thu Aug 19, 2010 9:56 am

48Rob wrote:If you can get it really cheap, it could work.

A 5200 pound axle, springs, hubs and 8 bolt wheels and tires are never going to 'work' on a trailer that weighs (hopefully) less than 2,000 pounds

Whatever you build on top of that setup is going to beat itself to death bouncing down the road. A short talk with a Dexter engineer will change your thinking. I had 3 Dexter 5200 pound torflex axles and wanted to build a 2,000 pound trailer for my 8,000 pound boat - Their engineer quickly talked me into using only 2 of them . . . . and of course he was right. The rating of the axle(s) and the load they will be carrying should be correctly matched

Don
User avatar
Alphacarina
500 Club
 
Posts: 826
Images: 4
Joined: Tue Jun 19, 2007 3:26 pm
Location: Ocean Springs MS
Top

Postby 48Rob » Thu Aug 19, 2010 6:17 pm

A 5200 pound axle, springs, hubs and 8 bolt wheels and tires are never going to 'work' on a trailer that weighs (hopefully) less than 2,000 pounds


Don,

Respectfully...I said it could work, if:

The springs can be reworked (leaves removed) to get an acceptable ride, or simply replaced with a set to match your completed weight.


The weight rating of the axle, hubs, and the type of wheel, be it 8 bolt, or 4 bolt, has no bearing on how soft, or hard, the ride will be.
The springs and the inflation of the tires will.

Rob
Waiting for "someday" will leave you on your deathbed wondering why you didn't just rearrange your priorities and enjoy the time you had, instead of waiting for a "better" time to come along...
User avatar
48Rob
Super Lifetime Member
 
Posts: 3882
Images: 4
Joined: Thu Nov 17, 2005 6:47 pm
Location: Central Illinois
Top


Return to Trailer and Chassis Secrets

Who is online

Users browsing this forum: No registered users and 2 guests