Worth swapping to Tremor rear leaf springs?

[Shaun Harlan]

How do you like the Deavers with Raptor bumps? What shocks are you going to use? Are you able to use the stock shock mounting locations? Do you have to use limit straps to protect the shocks?

I don't have them, I'm leaning that way. I've done a ton of research and was actually trying to decide between them and doing a spring under custom setup. Though I'm 90% set on APG's with kings. With leafs I can't see the need for a strap to limit droop. Unless you have enough to seriously throw off driveline angles. If I can get tremor leafs for cheaper than APG's then I wouldn't rule that out either......I would still change the bump stop

I currently have Eibach's and while it's better than stock it's nowhere near what it can be. The factory spring rate is just way off. When out wheeling and you get a rear tire off the ground, the speed at which it comes up is a bit unsettling. Combine that with the massive bump stop, you're damn near riding on the bump stops with a small load or minimal articulation/tuck. I have no idea why ford went this route other than to claim the payload/towing capacity.

I'm going to test the factory leaf springs with the bumps removed and see how much of a difference that makes in articulation and to see what the driveline angles are.

I have the front sway bar off currently as that's a decent limiter on front drop/articulation. Plus it rides better.

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[Shaun Harlan]

A new pair of tires is one of the most pleasurable ways in life to spend $600...

I almost bought a dragster rr last year ?. Instead I bought another jetski and sunk some money into my z900. Some cartridge upgrades, rear shock/spring but what really set it off were the tires. Same set up your running ?. Much grip= big smile

 

[Sheepdog]

I don't have them, I'm leaning that way. I've done a ton of research and was actually trying to decide between them and doing a spring under custom setup. Though I'm 90% set on APG's with kings. With leafs I can't see the need for a strap to limit droop. Unless you have enough to seriously throw off driveline angles. If I can get tremor leafs for cheaper than APG's then I wouldn't rule that out either......I would still change the bump stop

I currently have Eibach's and while it's better than stock it's nowhere near what it can be. The factory spring rate is just way off. When out wheeling and you get a rear tire off the ground, the speed at which it comes up is a bit unsettling. Combine that with the massive bump stop, you're damn near riding on the bump stops with a small load or minimal articulation/tuck. I have no idea why ford went this route other than to claim the payload/towing capacity.

I'm going to test the factory leaf springs with the bumps removed and see how much of a difference that makes in articulation and to see what the driveline angles are.

I have the front sway bar off currently as that's a decent limiter on front drop/articulation. Plus it rides better.

It looks like without the bump stop, the springs will go beyond flat, which is not good for leaf springs.

Whose pics are those? Does the spring go beyond flat with the Raptor bumps? Are those bumps for the little Raptor, or the F150 Raptor?

 

[Shaun Harlan]

It looks like without the bump stop, the springs will go beyond flat, which is not good for leaf springs.

Whose pics are those? Does the spring go beyond flat with the Raptor bumps? Are those bumps for the little Raptor, or the F150 Raptor?

Those are apg's pics from their Instagram page. One is obviously the stock spring with the stock bump stop the other one is they're no lift leaf pack with the raptor bump stops

 

[Sheepdog]

Those are apg's pics from their Instagram page. One is obviously the stock spring with the stock bump stop the other one is they're no lift leaf pack with the raptor bump stops

Thanks. APG's springs are Deavers, BTW...

 

[Sheepdog]

"Fixed" has two scenarios

1) how you perceive the changes
2) what the data shows

Now , most people who drop a grand into the "fix" will always lean to the side of it being better.
The data proves it.

I doubt that he dropped a grand on rear shocks...

 

[wilsoN_]

Do yourself a favor and leave the Springs alone unless you are planning to lift the truck. Most people on this form have already confirmed that changing out the shocks for other brands like eibach Fox and Bilstein will fix the problem.

I have Fox 2.5 DSC and will absolutely be swapping the rear springs, they flat out suck at anything besides load carrying capacity. Shipping on the Deaver's is outrageous $380+1250. I'll be doing the Icon 6 leaf progressive pack as soon as they are in stock for shipment.

 

[wilsoN_]

I'm not going to lie that the APG Springs are pretty darn nice. They're definitely great for someone who only wants to level their truck or not lift the truck whatsoever. But my question to you is how much shorter are the bump stops for the APG Springs? To my understanding they're not short by that much compared to the factory. I want to say it was only what half an inch at best? Don't get me wrong half an inch is still quite a bit but not enough to say you're going to gain way more travel Overstock.

The APG deaver's use OEM Raptor bumpstops which are about 2" shorter than the OEM and much more compliant. I already have the Raptor bumps on my truck.

 

[Sheepdog]

The APG deaver's use OEM Raptor bumpstops which are about 2" shorter than the OEM and much more compliant. I already have the Raptor bumps on my truck.

Are they Ranger Raptor bumps, or F150 Raptor bumps? What were the results?

 

[Sheepdog]

We put about 80 miles on the Ranger today, and the stock suspension is just a hot mess. It's like driving a sinking boat in rough water. I have no idea how something so floppy, can be so harsh on things like speed bumps. The spring rates are totally mismatched, and the dampers have almost no control over them.

We may very well have to add the Deavers to our King/Camburg shopping list. Five grand in parts just to fix the suspension, and that's not even a long-travel setup...

 

[Frenchy]

The APG deaver's use OEM Raptor bumpstops which are about 2" shorter than the OEM and much more compliant. I already have the Raptor bumps on my truck.

Okay so it's confirmed that it's two inches shorter on the bump stop. Here's one thing that a lot of you need to think about before just putting those on. From the factory Ford designed the factory shock to be within a certain tolerance of extended and collapsed height. What is that height? Honestly I have no idea because I don't have mine anymore and I tossed him well over a year ago when I installed my old man emu lift. Also when putting on shocks from Fox eibach Bilstein or even old man emu they are designed for either stock height or a lift. With that said if you're going with the APG Springs and you go to hit the bump stop you may damage the shocks you have installed because when you hit the bump stop your going far past collapsed height on the shock. This is something you guys need to keep in mind.

 

[wilsoN_]

Okay so it's confirmed that it's two inches shorter on the bump stop. Here's one thing that a lot of you need to think about before just putting those on. From the factory Ford designed the factory shock to be within a certain tolerance of extended and collapsed height. What is that height? Honestly I have no idea because I don't have mine anymore and I tossed him well over a year ago when I installed my old man emu lift. Also when putting on shocks from Fox eibach Bilstein or even old man emu they are designed for either stock height or a lift. With that said if you're going with the APG Springs and you go to hit the bump stop you may damage the shocks you have installed because when you hit the bump stop your going far past collapsed height on the shock. This is something you guys need to keep in mind.

Well aware... and actually the factory bump stops were designed to with load carrying in mind.

 

[NvrFinished]

Okay so it's confirmed that it's two inches shorter on the bump stop. Here's one thing that a lot of you need to think about before just putting those on. From the factory Ford designed the factory shock to be within a certain tolerance of extended and collapsed height. What is that height? Honestly I have no idea because I don't have mine anymore and I tossed him well over a year ago when I installed my old man emu lift. Also when putting on shocks from Fox eibach Bilstein or even old man emu they are designed for either stock height or a lift. With that said if you're going with the APG Springs and you go to hit the bump stop you may damage the shocks you have installed because when you hit the bump stop your going far past collapsed height on the shock. This is something you guys need to keep in mind.

One of the main reasons for using the shorter Raptor bump stops is because the APG leaf pack is much thicker / taller above the axle than the single O.E. leaf. If you left the O.E. bump stop in place, the actual upward travel of the leaf spring would be reduced. The shorter Raptor stop makes up that difference so that you don't lose any upward travel.

What's unfortunate is that the APG leaf springs only mildly increase articulation. I had asked about articulation and this was the their answer:

Minimally, yes. But that wasn't the intended purpose of this leaf pack. We made these for on and off-road comfort + load carrying capacity. Ford didn't make it easy to increase travel in the rear of this truck. The correct way of increasing travel numbers in the rear is to install a longer leaf spring, typically paired with a longer shackle that's been moved back. Ford decided to mount the leaf springs directly under the frame rails on this truck, and placed the shackle right up against the rear bumper mount support on the frame. This poses two engineering problems. 1, your bump stop is under the frame, taking up precious inches of travel room between the top spring and the frame rail. That's why we give you Raptor bump stops in the kit, because they're much shorter than the Ranger's, and thus giving you back some inches of up-travel you lose with a taller leaf pack. 2, a traditional longer shackle would contact the rear bumper mount support on the frame at full bump.​

 

[Superdannyboy]

I'm waiting for my deavers to arrive. The stock setup is too stiff and the deavers will compliment the long travel up front and soak up bumps instead of bucking.

I have some questions due to my limited knowledge of cycling suspension and setting up for max travel.

Are the rear King 2.5's that are available for the Ranger now using up all of the travel of the deavers from full bump with Raptor bump stops to full droop of the deavers?

If I put a bed cage with say a 16" shock on the rear, is there any benefit over a king 2.5 that is available for the Ranger now? I'm not sure of the stroke length of the rear King replacement 2.5, and if it isn't using up all of the deavers down travel then I see a benefit of cycling to full droop and adding a shock to compliment the added down travel, but since the springs are under the frame there would be no gain in up travel.

Are the deavers flat at full bump with the Raptor bump stops?

Looks to me that deavers with a raptor bump stop and king 2.5's are a huge improvement in ride quality and soaking up bumps, but the whole setup is limiting in total travel and if that is the main concern then either relocating the springs outside of the frame with longer springs or completely linking the rear is an efficient use of one's time for max gains.

I just found out I'm going to be a Dad with my first child so I'll be running the deavers for quite some time and I can do a bed cage if there are some gains, but linking is out of my budget for a few years. I don't mind putting deavers now and then linking later, that way I'll experience both and appreciate both of them in different respects.

 

[Sheepdog]

You're gonna need to call King, Deaver, and/or APG.

Congrats on the baby. Take lots of pics...

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