Spring Rates V. Travel (weight of bumper & winch) - JeepForum.com
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post #1 of 18 Old 08-12-2010, 09:12 AM Thread Starter
Running925
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Spring Rates V. Travel (weight of bumper & winch)

Hey guys, i'm sure i can't be the only guy with this complaint. I'm looking for some insight to this situation.

I have some 3-4 Inch lift springs, they were doing a great job until i added the weight of a bumper and winch on the front. Then i had to add a 2inch coil spacer to the front to level out the vehicle.

Thats fine for driving down the road, but the problem comes into play when the vehicle is off-road i'm lacking the travel that it should have. Also, the spring is all sagged out appears to be overloaded, so there is no way that it could really perform to it's best ability.

What have others done to resolve this issue. Can you order springs that are designed for the increased weight of the added bumper & winch? Would they then be to stiff?

I don't really wanna order a 6 inch lift spring to compensate, because that one will then be just as sagged out & not performing as it was intended.

Hopfully we can get some in depth answers in here.

TIA

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post #2 of 18 Old 08-12-2010, 09:36 AM
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Originally Posted by Running925 View Post
Hey guys, i'm sure i can't be the only guy with this complaint. I'm looking for some insight to this situation.

I have some 3-4 Inch lift springs, they were doing a great job until i added the weight of a bumper and winch on the front. Then i had to add a 2inch coil spacer to the front to level out the vehicle.

Thats fine for driving down the road, but the problem comes into play when the vehicle is off-road i'm lacking the travel that it should have. Also, the spring is all sagged out appears to be overloaded, so there is no way that it could really perform to it's best ability.

What have others done to resolve this issue. Can you order springs that are designed for the increased weight of the added bumper & winch? Would they then be to stiff?

I don't really wanna order a 6 inch lift spring to compensate, because that one will then be just as sagged out & not performing as it was intended.

Hopfully we can get some in depth answers in here.

TIA
Some of us are weight conscious and don't use heavy bumpers and we buy quality suspension components.

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post #3 of 18 Old 08-12-2010, 10:19 AM Thread Starter
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Originally Posted by mrblaine View Post
Some of us are weight conscious and don't use heavy bumpers and we buy quality suspension components.
Thanks for the slam, but i'm not going to sell everything and start over. I'd prefer to just buy springs that are rated for my weight instead of running these horrible spacers!

I never heard of a "light weight winch", please share. Maybe i could have shaved 10lbs off my bumper's weight if i spent an extra 300 dollars but i don't see it being worth that.
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post #4 of 18 Old 08-12-2010, 10:45 AM
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post #5 of 18 Old 08-12-2010, 11:04 AM
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I know with my particular lift, that I'll need to consider 4" springs in the front when I install my winch. I'll pull the spacers and old springs, drop in the 4" spring. The bumper I've selected doesn't weigh much more than stock...but the winch is 80-90lbs.

Are your springs 3" or 4"? Try 1" longer, add a small spacer if necessary.

The only lightweight winches I know of are rockcrawler-type with 50' of rope...which is fine if you're only 40' away from an anchor point.

ETA: without knowing what type or what size lift you have, this question is difficult to answer correctly. My solution would be to contact the lift mfg. directly and explain the issue at hand (that's what I did).
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post #6 of 18 Old 08-12-2010, 11:15 AM
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Thanks for the slam, but i'm not going to sell everything and start over. I'd prefer to just buy springs that are rated for my weight instead of running these horrible spacers!
Spacers aren't that horrible and that wasn't a slam. Fact is, weight is bad. Weight in the wrong places is worse.

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I never heard of a "light weight winch", please share. Maybe i could have shaved 10lbs off my bumper's weight if i spent an extra 300 dollars but i don't see it being worth that.
Warn makes a 9000 lb rated winch that weighs 48 lbs and I've seen winch plates that weigh more.

How big is your front bumper?

But, you could get some RE springs if you don't have them. We mix and match springs all the time to get the rake we want on a rig, it just depends on lift height and weight you're dealing with.

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post #7 of 18 Old 08-12-2010, 11:20 AM
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We were dealing with this stuff long before Savvy was around. If you care to dig around, you are likely able to find posts from me about this same crap dating back many years.

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post #8 of 18 Old 08-12-2010, 11:36 AM Thread Starter
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How big is your front bumper?

But, you could get some RE springs if you don't have them. We mix and match springs all the time to get the rake we want on a rig, it just depends on lift height and weight you're dealing with.
Front bumper is a Steel Smittybilt stinger bumper that i got for 200 bux. It weights about 60 lbs, so that along with my xrc10, there is a bit of weight out in front of the wheels that is sagging me out.



I'd say lets just get rid of the stinger, but it almost saved me from an end over end one day when the rear wheels were in the air, so i'd prefer to keep it there.
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post #9 of 18 Old 08-12-2010, 11:51 AM
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I'd say lets just get rid of the stinger, but it almost saved me from an end over end one day when the rear wheels were in the air, so i'd prefer to keep it there.
But if that's not likely to happen again - if it was a one-time thing - then you could lose it and still be safe. Not trying to talk you into an unsafe situation, here...just playing Devil's Advocate.

If it's worth doing, then it's worth overdoing.

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post #10 of 18 Old 08-12-2010, 11:57 AM
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I'd say lets just get rid of the stinger, but it almost saved me from an end over end one day when the rear wheels were in the air, so i'd prefer to keep it there.
Well, if it almost saved you and you learned from your silliness not to do that again, then I'd almost guess it wouldn't be needed again.

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post #11 of 18 Old 08-12-2010, 12:01 PM Thread Starter
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I still run that trail.. this part is more expected but it could easily happen so i wanna keep that. Plus i use the tip of it as a guide in some tight areas so i know exactly if i'm gonna clear something with my corner.

I'm starting to lean twords a coil over option, but would rather go with a cheaper solution if i can find something that is gonna function properly.
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post #12 of 18 Old 08-12-2010, 12:06 PM
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post #13 of 18 Old 08-12-2010, 12:09 PM Thread Starter
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I still have some RC 3.25 inch progressive rate springs in there, they are less than one year old. I've since changed direction on some of the things i want to do with my jeep and thats why i'm looking for a good solution to replace those.

2.5inch spacer in teh front to compensate for the sag.
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post #14 of 18 Old 08-12-2010, 12:33 PM
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I still have some RC 3.25 inch progressive rate springs in there, they are less than one year old. I've since changed direction on some of the things i want to do with my jeep and thats why i'm looking for a good solution to replace those.

2.5inch spacer in teh front to compensate for the sag.
your profile says 5 inches of lift? but without the spacers, you netted 0.75" of lift from a 3.25" lift kit? Sounds like RC too me...

RC is pretty soft and sags quickly from what i've read on this forum. their 2.5" lift only gives like 1" on a stock Rubicon...and the weight isn't that much more over a sport TJ.

I'd say upgrade to some springs that are actually taylored to the weight of your rig...AEV and OME are good examples.
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post #15 of 18 Old 08-12-2010, 12:40 PM
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their 2.5" lift only gives like 1" on a stock Rubicon...and the weight isn't that much more over a sport TJ.
That much, like how much? 50 or 60 lbs of sprung weight due to a heavier t-case and 2 locker pumps?

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