: Rear spring locations/wheelbase/Shackle angle


MT4Runner
09-29-2008, 12:41 PM
Trying to set my rear (inboarded) spring hangers and rear shackles, so I dug through some other build threads to find other spring hangers and shackle hangers. Thought a thread of the pics I found might be useful to other builders.

Hobie's #10:
http://www.sandtastictoys.com/WreckingBall4-.JPG


ToolChassis' #20:
http://www.pirate4x4.com/forum/attachment.php?attachmentid=354518&stc=1&d=1203526379

http://www.pirate4x4.com/forum/attachment.php?attachmentid=354520&stc=1&d=1203526379


FYRDUDE'S #23:
http://www.pirate4x4.com/forum/attachment.php?attachmentid=177655&stc=1&d=1111021908

http://www.pirate4x4.com/forum/attachment.php?attachmentid=188164&stc=1&d=1116380294

http://www.sandtastictoys.com/FrameSitting18.JPG


Marlin Crawler #28:
http://www.marlincrawler.com/ftoy/206.jpg


TG #29:
http://www.trail-gear.com/bbs/ftoy/003.jpg


Pook's #32:
http://www.pirate4x4.com/forum/attachment.php?attachmentid=223882&d=1137005291


#38:
http://img.photobucket.com/albums/v16/arizonaxj/F-Toy/Axle_Installed.jpg

MT4Runner
09-29-2008, 12:42 PM
FROR's #44:
http://www.pirate4x4.com/forum/attachment.php?attachmentid=380848&stc=1&d=1216396589


Alpine's #48:
http://www.pirate4x4.com/forum/attachment.php?attachmentid=359205&stc=1&d=1205603424

http://www.pirate4x4.com/forum/attachment.php?attachmentid=362665&stc=1&d=1207056999

http://www.pirate4x4.com/forum/attachment.php?attachmentid=361521&stc=1&d=1206549251

MT4Runner
09-29-2008, 12:43 PM
.

Brian Ellinger
09-29-2008, 12:58 PM
This is one of the best pics Ive found of ours. The rear suspension is out right now, otherwise Id just snap a pic of it now!

http://pirate4x4.com/forum/attachment.php?attachmentid=393819&stc=1&d=1222711954

Jeep07
09-29-2008, 01:15 PM
During the Build
393836

After the first run
393837

Now the springs have settled a little more (Pic from Jellico)
393838

They will pretty much flatten out
393839

The rear end has sagged and is about 1" lower than the front. The springs work well but I think I will be changing shocks. (Using cheapo rancho shocks right now)

MT4Runner
09-29-2008, 01:45 PM
Cool--thanks.
Which rear leaves did you use?
Did you need a taller lift rear leaf pack than your front pack?

Since I'm using (or that's the plan for now) stock rears, they're already broken-in, so I'll shoot for a shackle angle similar to yours in the first pic. I'm thinking I might double up the 3rd leaf out of 2 rear packs (lower one cut down) since the 3rd leaf has more arch than the milwrap 2nd.

Jeep07
09-29-2008, 02:19 PM
Cool--thanks.
Which rear leaves did you use?
Did you need a taller lift rear leaf pack than your front pack?

Since I'm using (or that's the plan for now) stock rears, they're already broken-in, so I'll shoot for a shackle angle similar to yours in the first pic. I'm thinking I might double up the 3rd leaf out of 2 rear packs (lower one cut down) since the 3rd leaf has more arch than the milwrap 2nd.

I used Modified TG 5's front and rear with 6" shackles.

MT4Runner
09-29-2008, 02:32 PM
Does your rig sit pretty level? Same # of leaves out of both packs?

Maybe I'm over-thinking the way my rig sits without weight on the springs/axles. I just want to get it close before I make bigger tack welds--I still won't do any final welding until after everything is on, then check out fit/level/balance, etc., then disassemble for final welding and paint.

Brian Ellinger
09-29-2008, 02:36 PM
Does your rig sit pretty level? Same # of leaves out of both packs?

Maybe I'm over-thinking the way my rig sits without weight on the springs/axles. I just want to get it close before I make bigger tack welds--I still won't do any final welding until after everything is on, then check out fit/level/balance, etc., then disassemble for final welding and paint.

The rear will likely be lighter than the front, compressing the spring less. As for height, I wouldnt bother trying to match anything better than first guess without the full weight on them.

desertoy
09-29-2008, 02:37 PM
Most every picture above with the exception on Pook and Brian have their shackle angle wrong. It works just fine. It also rides good. But it doesn't climb wirth a $hit. Maybe I shouldn't give away too many secrets :grinpimp:.

mtbrjon
09-29-2008, 02:53 PM
Most every picture above with the exception on Pook and Brian have their shackle angle wrong. It works just fine. It also rides good. But it doesn't climb wirth a $hit. Maybe I shouldn't give away too many secrets :grinpimp:.

How can you tell? Some are loaded, some aren't, some are new and some are socked out? That's the problem i've always had. You can't really tell so much unless you've used that same spring setup before, same shackle length, etc, etc.....If you have some foolproof method for determining this without trial and error please share. Pm it to me if you don't want to give it away.:D

MT4Runner
09-29-2008, 03:19 PM
Most every picture above with the exception on Pook and Brian have their shackle angle wrong. It works just fine. It also rides good. But it doesn't climb wirth a $hit. Maybe I shouldn't give away too many secrets :grinpimp:.

http://www.pirate4x4.com/forum/attachment.php?attachmentid=223882&d=1137005291

http://www.pirate4x4.com/forum/attachment.php?attachmentid=380848&stc=1&d=1216396589

I'm pickin' up what you're puttin' down, DT!! :grinpimp:

desertoy
09-29-2008, 03:31 PM
All I can say is, there have been alot of verticle climbs on competition courses that some rigs have made and others have not. Same tires/pressure, same springs, basically same weight.

I know that the Deschamps rig will out climb every other F-Toy in the west, it's not cause of their funky rear leaf setup either. Is it the tires? I don't think so.

Shakle angles definately don't get the attention that they deserve.

MT4Runner
09-29-2008, 04:25 PM
All I can say is, there have been alot of verticle climbs on competition courses that some rigs have made and others have not. Same tires/pressure, same springs, basically same weight.

I know that the Deschamps rig will out climb every other F-Toy in the west, it's not cause of their funky rear leaf setup either. Is it the tires? I don't think so.

Shakle angles definately don't get the attention that they deserve.

Thanks. :smokin:

http://www.pirate4x4.com/forum/showthread.php?t=546264&highlight=deschamps

Here's Deschamps' photo gallery:
http://gallery.mac.com/elykwt#100126/IMG_1569&bgcolor=black

MT4Runner
09-29-2008, 04:32 PM
Here's #001: :smokin:
http://www.pirate4x4.com/forum/attachment.php?attachmentid=109934&stc=1&d=1076972566

desertoy
09-29-2008, 04:54 PM
Wow, that thing was pretty back then.

Pook
09-29-2008, 06:55 PM
Thats my old shackle setup from 3 years ago. I redid it last winter. A couple pics from mocking it up.

MT4Runner
09-29-2008, 10:21 PM
Thats my old shackle setup from 3 years ago. I redid it last winter. A couple pics from mocking it up.

I see what you did there! Very cool--thanks!!

mtbrjon
09-30-2008, 04:14 AM
All I can say is, there have been alot of verticle climbs on competition courses that some rigs have made and others have not. Same tires/pressure, same springs, basically same weight.

I know that the Deschamps rig will out climb every other F-Toy in the west, it's not cause of their funky rear leaf setup either. Is it the tires? I don't think so.

Shakle angles definately don't get the attention that they deserve.

Thanks for the non-answer.:flipoff2:

Pook
09-30-2008, 10:45 AM
I see what you did there! Very cool--thanks!!


my rear springs are short though. 51" Rears, I moved my rear diff forward 6.5" last winter which allowed me the change in shackle setup.

MT4Runner
09-30-2008, 12:17 PM
I'm mocking up around 48" rears. If I move my whole spring pack about 6" forward, it slides the front spring hanger down on the framerail giving me more lift with less shackle height, and I've got plenty of room to put the shackle in front of the rear xmember.

I'm going to stuff a tire against the perimeter bar and the side downtube to figure out my minimum wheelbase and tire center with 37's, and add that into my mock up considerations.

ToolBox Guy
09-30-2008, 12:53 PM
All I can say is, there have been alot of verticle climbs on competition courses that some rigs have made and others have not. Same tires/pressure, same springs, basically same weight.

I know that the Deschamps rig will out climb every other F-Toy in the west, it's not cause of their funky rear leaf setup either. Is it the tires? I don't think so.

Shakle angles definately don't get the attention that they deserve.














John is completely correct with this statement. Mine, after I changed the rear springs, and didn't move the inboard mounts forward, rode great in the fast desert stuff, but it climbed like hell. It also helped contribute to tons of rollovers this year.
Try to set your shackle angle as close to verticle as you can in an un-weighted rig.




Or you could link it!!!!!

MT4Runner
09-30-2008, 01:34 PM
Mine, after I changed the rear springs, and didn't move the inboard mounts forward, rode great in the fast desert stuff, but it climbed like hell.

For your amusement:
http://www.pirate4x4.com/forum/showthread.php?t=622503&p=8784014