Slinky Long Travel Suspension Systems (1 Viewer)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Status
Not open for further replies.
So, let me know if I get this right.
4. Slinky Long Travel kits use the same shock for 50mm and 75mm lift heights.
5. Slinky Long travel kits use a shock that is 50mm longer than the Intermediate Long travel shock.
@AutoCraft Aus replied Correct to both of these questions.

Can I assume the "SLT" Intermediate & HD coils in the 50mm & 75mm are the same free height since they use the same longer shocks. (AC spec 56511 & 56512 2.0 shocks)
 
Here's the list of different coil options that I'm aware of. Darren can make any corrections here if I have any mistakes. The only ones I have question about are the part numbers SC70804 and SC70814 that are both referencing HD Slinky 50mm dual rate coils.

SC70801FSLT Intermediate 50mm front coils
SC70801RSLT Intermediate 50mm rear coils
SC70801FSLT Intermediate 75mm front coils
SC70801RSLT Intermediate 75mm rear coils
SC70804FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70804RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm front DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm rear DUAL RATE coils
SC70805RSLT Extra Heavy Duty 70mm rear DUAL RATE coils
SC70811FSLT Heavy Duty 50mm front coils
SC70811RSLT Heavy Duty 50mm rear coils
SC70811FSLT Intermediate 75mm front coils
SC70811RSLT Intermediate 75mm rear coils
SC70814FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70814RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils
@AutoCraft Aus
Below is some numbers & info that I would like to put in the Compiled Coil & Shock thread... please proof read it is correct.
I assume these are all DUAL RATE coils with the Tapered wire on top.

Why are 50mm & 75mm coils the same part number?
SC70801FSLT Slinky Long Travel Intermediate 50mm front coil (old #AC5300)
SC70801FSLT Slinky Long Travel Intermediate 75mm front coil 160/260# (old #AC7498)
SC70801RSLT Slinky Long Travel Intermediate 50mm rear coil
SC70801RSLT Slinky Long Travel Intermediate 75mm rear coil 160/270# (old #AC7501)
SC70811FSLT Slinky Long Travel Heavy Duty 50mm front coil
SC70811FSLT Slinky Long Travel Heavy Duty 75mm front coil
SC70811RSLT Slinky Long Travel Heavy Duty 50mm rear coil
SC70811RSLT Slinky Long Travel Heavy Duty 75mm rear coil 160/320# (old #7511)

Or is this correct? This counts 9 options.
70801FSLT Int 50mm front
70811FSLT HD 50mm front
70804FSLT Int 75mm front
70814FSLT HD 75mm front

70801RSLT Int 50mm rear
70811RSLT HD 50mm rear
70804RSLT Int 75mm rear
70814RSLT HD 75mm rear
70805RSLT Extra HD 70mm rear

S= suspension
C= coil
7= Toyota
08= 80 series
01= Int stage 1/ 11= HD stage 1/ 04= Int stage 4/ 14= HD stage 4
F= Front
R= Rear
SLT= Slinky Long Travel

Woody's 80
50mm HD front SC50804F (70mm Patrol coil)
50mm HD rear is a 75mm Int. coil
 
Last edited:
S= suspension
C= coil
7= Toyota
08= 80 series
01= Int stage 1/ 11= HD stage 1/ 04= Int stage 4/ 14= HD stage 4

I'm confused with these numbers revering to different stages like Stage 1 & Stage 4 coils... is this type O?
14=HD stage 4
SC70814FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70814RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils
04= Int stage 4
SC70804FSLT Int. Slinky 50mm front DUAL RATE coils
SC70804RSLT Int. Slinky 50mm rear DUAL RATE coils
What is 05 in the number below mean?
SC70805RSLT Extra Heavy Duty 70mm rear DUAL RATE coils
 
@AutoCraft Aus
Below is some numbers & info that I would like to put in the Compiled Coil & Shock thread... please proof read it is correct.
I assume these are all DUAL RATE coils with the Tapered wire on top.

Why are 50mm & 75mm coils the same part number?
SC70801FSLT Slinky Long Travel Intermediate 50mm front coil (old #AC5300)
SC70801FSLT Slinky Long Travel Intermediate 75mm front coil 160/260# (old #AC7498)
SC70801RSLT Slinky Long Travel Intermediate 50mm rear coil
SC70801RSLT Slinky Long Travel Intermediate 75mm rear coil 160/270# (old #AC7501)
SC70811FSLT Slinky Long Travel Heavy Duty 50mm front coil
SC70811FSLT Slinky Long Travel Heavy Duty 75mm front coil
SC70811RSLT Slinky Long Travel Heavy Duty 50mm rear coil
SC70811RSLT Slinky Long Travel Heavy Duty 75mm rear coil 160/320# (old #7511)

Or is this correct? This counts 9 options.
70801FSLT Int 50mm front
70811FSLT HD 50mm front
70804FSLT Int 75mm front
70814FSLT HD 75mm front

70801RSLT Int 50mm rear
70811RSLT HD 50mm rear
70804RSLT Int 75mm rear
70814RSLT HD 75mm rear
70805RSLT Extra HD 70mm rear

S= suspension
C= coil
7= Toyota
08= 80 series
01= Int stage 1/ 11= HD stage 1/ 04= Int stage 4/ 14= HD stage 4
F= Front
R= Rear
SLT= Slinky Long Travel

Woody's 80
50mm HD front SC50804F (70mm Patrol coil)
50mm HD rear is a 75mm Int. coil

I guess to understand what your asking me, I need to know where you got the details ?

Why are 50mm & 75mm coils the same part number?
SC70801FSLT Slinky Long Travel Intermediate 50mm front coil
SC70801FSLT Slinky Long Travel Intermediate 75mm front coil
SC70801RSLT Slinky Long Travel Intermediate 50mm rear coil
SC70801RSLT Slinky Long Travel Intermediate 75mm rear coil
SC70811FSLT Slinky Long Travel Heavy Duty 50mm front coil
SC70811FSLT Slinky Long Travel Heavy Duty 75mm front coil
SC70811RSLT Slinky Long Travel Heavy Duty 50mm rear coil
SC70811RSLT Slinky Long Travel Heavy Duty 75mm rear coil

Or is this correct? This counts 9 options.

SC70801FSLT HD 75mm front stage 1 int
SC70811FSLT Int 50mm front stage 1 HD
SC70804FSLT Int 75mm front stage 4 int
SC70814FSLT HD 75mm front stage 4 HD

SC70801R SLT Int 50mm rear stage 1 int
SC70811R SLT HD 50mm rear stage 1 HD
SC70804R SLT Int 75mm rear stage 4 Int
SC70814R SLT HD 75mm rear stage 4 HD
SC70805RE SLT Extra HD 70mm rear EHD

S= suspension
C= coil [K = kit, s = shock, a = accessory, etc]
7= Toyota
08= 80 series
01= Int stage 1/ 11= HD stage 1/ 04= Int stage 4/ 14= HD stage 4
F= Front
R= Rear
SLT= Slinky Long Travel

E = Extra heavy Duty

So those numbers are the part numbers when placed into a kit.

the SKU for these is different as they come into stock as an individual part number.
 
Adam provided them on page #2 of this thread.
Here's the list of different coil options that I'm aware of. Darren can make any corrections here if I have any mistakes. The only ones I have question about are the part numbers SC70804 and SC70814 that are both referencing HD Slinky 50mm dual rate coils.

SC70801FSLT Intermediate 50mm front coils
SC70801RSLT Intermediate 50mm rear coils
SC70801FSLT Intermediate 75mm front coils
SC70801RSLT Intermediate 75mm rear coils
SC70804FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70804RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm front DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm rear DUAL RATE coils
SC70805RSLT Extra Heavy Duty 70mm rear DUAL RATE coils
SC70811FSLT Heavy Duty 50mm front coils
SC70811RSLT Heavy Duty 50mm rear coils
SC70811FSLT Intermediate 75mm front coils
SC70811RSLT Intermediate 75mm rear coils
SC70814FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70814RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils

Sorry for the messy questions above.
How about individual coil part numbers for the 80 series like AC5300, AC7501, AC7511 AC7498 etc.

Front:
SLT Int 50mm front
SLT HD 50mm front
SLT Int 75mm front
SLT HD 75mm front
Rear:
SLT Int 50mm rear
SLT HD 50mm rear
SLT Int 75mm rear
SLT HD 75mm rear
SLT Extra HD 70mm


~~~~~~~~~~
Can I assume the "SLT" Intermediate & HD coils in the 50mm & 75mm are the same free height since they use the same longer shocks. (AC spec 56511 & 56512 2.0 shocks)
 
Last edited:
Can I assume the "SLT" Intermediate & HD coils in the 50mm & 75mm are the same free height since they use the same longer shocks. (AC spec 56511 & 56512 2.0 shocks)
 
I might have just confused myself again. I was looking at @GW Nugget 's quote from @Box Rocket . It looks like, in order to get dual rate slinkys, you have to get heavy duty springs? @GW Nugget , aren't you running Slinkys that are both dual rate and intermediate in rate? I was originally thinking of getting HD 50mm springs. But now, I am looking at doing intermediate 75mm springs instead of the HD 50mm springs. Here's the list I'm referring to:

SC70801FSLT Intermediate 50mm front coils
SC70801RSLT Intermediate 50mm rear coils
SC70801FSLT Intermediate 75mm front coils
SC70801RSLT Intermediate 75mm rear coils
SC70804FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70804RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm front DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm rear DUAL RATE coils
SC70805RSLT Extra Heavy Duty 70mm rear DUAL RATE coils

SC70811FSLT Heavy Duty 50mm front coils
SC70811RSLT Heavy Duty 50mm rear coils
SC70811FSLT Intermediate 75mm front coils
SC70811RSLT Intermediate 75mm rear coils
SC70814FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70814RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils

If these questions are distracting (or have already been answered somewhere) from the topic here, feel free to delete. I already know that I'm easily confused.
 
I might have just confused myself again. I was looking at @GW Nugget 's quote from @Box Rocket . It looks like, in order to get dual rate slinkys, you have to get heavy duty springs? @GW Nugget , aren't you running Slinkys that are both dual rate and intermediate in rate? I was originally thinking of getting HD 50mm springs. But now, I am looking at doing intermediate 75mm springs instead of the HD 50mm springs. Here's the list I'm referring to:

SC70801FSLT Intermediate 50mm front coils
SC70801RSLT Intermediate 50mm rear coils
SC70801FSLT Intermediate 75mm front coils
SC70801RSLT Intermediate 75mm rear coils
SC70804FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70804RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm front DUAL RATE coils
SC70804FSLT Heavy Duty Slinky 75mm rear DUAL RATE coils
SC70805RSLT Extra Heavy Duty 70mm rear DUAL RATE coils

SC70811FSLT Heavy Duty 50mm front coils
SC70811RSLT Heavy Duty 50mm rear coils
SC70811FSLT Intermediate 75mm front coils
SC70811RSLT Intermediate 75mm rear coils
SC70814FSLT Heavy Duty Slinky 50mm front DUAL RATE coils
SC70814RSLT Heavy Duty Slinky 50mm rear DUAL RATE coils

If these questions are distracting (or have already been answered somewhere) from the topic here, feel free to delete. I already know that I'm easily confused.
Intermediate rate springs are available as dual rate as well.
 
This is everything I know about AutoCraft Slinky Long Travel

Slinky Long Travel

Dist. through
www.endlesshorizonsoutfitters.com
www.4xoverlandusa.com

Resourced from:
Slinky Long Travel Suspension Systems
Auto-Craft Suspension Kits
Auto-Craft Suspension Kits
50mm info 97 LX450 Build

75mm lift
75mm Int. front AC7498 (23.62/24.21") 13.5 turns 160/260# (I use AC56511 shock)
75mm Int. rear AC7501 (21.13"/21") 10.5 turns 160/270# (I use AC56512 shock)
75mm HD AC7511 rear (21.25"/21") 10.5 turns 160/320# (I use AC56512 shock)

AutoCraft Spec Icon 2.0 IFP SHOCKS
Front AC56509 15.35"/26.17"
Rear AC56510 15.6"/25.67"
Front AC56511 16.85"/28.17" (Rec BS 1")
Rear AC56512 16.85"/27.42" (Rec BS 1")
(Bump stop recommendation by Dylan)

50mm lift
50mm Int. front AC5300 (21.75"/21.5") 10.5 turns (Use AC56509 shock) as per @vegastory
50mm Int. rear ???

50mm HD front SC50804F (70mm Patrol coil) approx. 13.5 turns see woody's 80 below
50mm HD rear is a 75mm Int. coil AC7501
woody%20golden%20crack_zpsrulspgcw.jpg

slinky1-jpg.1241577






20160729_155829%2B%25281%2529.jpeg


Above is the 7498 Int fronts & below are the Int. 7501 & HD 7511.

20170622_171957-1.jpg


7501 75mm Intermediate 10.5 turns~160/270#
20170622_171847-jpg.1594415


20170622_171832-jpg.1594418


7511 75mm Heavy Duty 10.5 turns~160/320#
20170622_171648-jpg.1594417


20170622_171635-jpg.1594414

These are 2.0 IFP AutoCraft Spec shocks
20171130_124121.png


On rig under weight
dsc_0486-jpg.1584674


Slinky vs OME 850J
dsc_0479-jpg.1584675


Slinky rear bump stop is 30mm taller than stock. (this would equal a 30mm bump stop extension).
20170622_183856-jpg.1594406



~~~~~~~
80 shock thread - familiar territory could use update

Our slinky coils for AC7498 front are 260 lb [SNOWY has these]
rim to fender is 800-825mm, and because the last 2 5/8 thick coils are completely dead, it allows us to trim heights to suit by removing a coil if we need to.

We also have a 290 lb front for fully loaded diesels. This is a linear coil for the 670mm shock length, but not Slinkies. Its an 810 - 820mm rim to fender height.

Our AC7501 rears are 270lb intermediate, 810-830mm rim to fender and AC7511 320 lb HD 810-830mm rim to fender.

330 lb longer lineear coil 30mm higher AC7511E extra HD 830-850mm rim to fender.

We also have a 495 lb rear coil for big heavy extended chassis tourers 830-860mm rim to fender.

All our slinky coils are 160 lb on the tapered wire section.

We normally try and work to a 30mm [1 1/4"] rake when vehicle accessory fitted but unloaded as we see it to install.

Our intermediate coils drop aprox 12mm [1/2"] per 100kg of load.

Our HD drop aprox 8mm per 100 kg of load.

How we measure those, rim to fender, for 80 we talk 16" rim, and add 12mm for 17s, 24mm for 18s, etc.

This makes it easier with deep dish wheels, than centre of hub, and removes tyre pressure variants.

matt_front3.jpg


Millimeters to Inches (mm to in) conversion calculator
 
50mm HD front SC50804F (70mm Patrol coil) approx. 13.5 turns see woody's 80
@AutoCraft Aus what are the rates of this SC50804F 70mm Patrol coil coil compared to the AC7498 160/260lbs of the 75mm Immediate front?
 
Trying to get an understanding of the workings of the slinky 50mm vs 75 mm with 33 inch tires. Will the 75mm kit allow for more up travel with this size tire or is the travel not so much determined by the tire rubbing the wheel wells but by the control arms/panhard stuff coming in contact with each other? I have no experience with suspension stuff but trying to learn.

If there is no change in up travel between running a different size tire (33 vs 35) on the 75 mm kit what advantage is there in running the 75mm kit other than lifting the body up a little compared to the 50mm kit? I thought in reading through the various threads that there was no difference in travel between the 50mm and 75mm kits but just in the ride height and that 35's fit fine in the 50mm kit.

I also seem to recall that this kit is designed for 1/3 up travel and 2/3 down travel. Is this achieved by the longer shocks allowing more droop on the non-compressed side of the solid front axle? On a system designed to have a more 50/50 up/down travel is this achieved my limiting the droop with a shorter travel length shock or bigger bump stop? If so doesn't that also limit up travel on the side that is being compressed on a solid front axle set up or am I just confused? I guess something that might help me understand the solid front axle suspension better is to know if the axis of rotation (not sure if that is the right terminology - the pivot point like on a teeter totter) of the straight axle is dynamic (doesn't always pivot from the center of the axle) or is pivot point fixed. If pivot point is fixed at the center than a 50/50 up/down travel makes sense but if it isn't fixed and moves a bit along the length of the axle can someone tell me which direction that pivot point moves towards? For example, if the front DS tire is going over 12 inch rock. Does the axle pivot directly in the middle, does it pivot from a point closer to the DS tire or does it pivot from a point closer towards the PS tire? If it pivots from a point closer toward the up-traveling tire in this sort or situation it makes sense to need more droop. I realize this is just talking about the front end of the suspension and that there is a rear axle too and that it all works together but I have to start simple first.

Going back to the specifics of this kit, does the 75mm kit allow for more spring compression compared to the 50mm before hitting the bump stops say when taking a whoop at speed or coming down off something hard?

I am sure these questions will show my ignorance regarding suspension :) Just trying to learn and figure out what to get when I update my old stock suspension.
 
After going through this thread, I decided to check the part numbers vs. the order I placed on endlesshorizon's website.

I had placed an order for 75MM Heavy Duty Front Dual Rate Coils. According to the website the part number listed is: SKU: SC70804FSLT which, according to the part numbers listed here, are correct for what I want.

But when I checked the rear 75MM Heavy Duty Rear Dual Rate Coils the website listed part number SKU: SC70805RSLT which, according to the part numbers listed here are actually 70MM Extra heavy duty rear coils.

@dockbox do you think this is a typo on the website or will I be receiving the wrong springs? Looks like the front and rear heavy duty 75MM springs use the same part number? SC70804FSLT
 
Being packed here now. Kevin letting me know how what is shipping on time lines.
 
we currently are backordered on heavies and front coils. They are in the next shipment that should be here in 6-8 weeks

Please advise on ETA of this shipment ? I was told by Endlesshorizon back in April that he would have product in June ??

Dont hold your breath @Sharky1528 , the above quote is from May 31, 2018.
 
Please advise on ETA of this shipment ? I was told by Endlesshorizon back in April that he would have product in June ??

This scares me. I want to order a Slinky Stage 1 kit but I'm getting scared about order fulfillment. I messaged @dockbox over a week ago and didn't get a reply. Messaged him again today.
 
This scares me. I want to order a Slinky Stage 1 kit but I'm getting scared about order fulfillment. I messaged @dockbox over a week ago and didn't get a reply. Messaged him again today.

Yeah... This is what was going on when RedLine was the distributor and now EndlessHorizon too ?? Is the real problem in Australia ?? Maybe we can get some Transparency from @AutoCraft Aus or @dockbox

I know we are not a Big market like Australia but as a Manufacturer you have to keep the parts flowing to your distributors or people will move on...
 
Last edited:
I'll try to shed a bit of light on the situation (at least with what I know of it) in regards to shipments etc. Kevin and Darren will be the best source for accurate information.

First off, as you can imagine Darren and Kevin are busy running businesses that require their attention in a lot of different areas. As a result, they aren't always checking forums multiple times a day, or even multiple times a week depending on what's going on. So you might need to be patient in getting a response to forum PMs from either of them. If you want information more quickly, I'd suggest calling the EHO shop directly. Kevin is pretty accessible that way and is happy to answer questions and give you the latest status on products. Personally, I try to keep tabs on what's happening from a high level and I try to watch the forums and answer questions where I can when I know it might take some time for Kevin or Darren to respond. So feel free to ping me. I might not have an exact answer for you, or know the status of your individual order but I'll help where I can.

@Sharky1528 I can tell you that the situation with Kevin and EHO is not at all like what had happened with Redline. From what I've seen from EHO after taking over the product line, they have never ignored customers and have always given an ETA on shipment arrivals that have been pretty accurate. Again, relying on the forum as your primary method of communicating with a business probably isn't the most effective. Call Kevin and I know he'll take care of you.

Also, this is still a relatively new product to the US market and it's coming through a relatively new Distributor and as a result it takes time to know exactly what the demand is for a new product. From talking to Kevin, I know he is doing his best to anticipate the demand and bring in kits to support that, but (good or bad) the demand has been growing and he has sometimes sold out of certain parts/kits. As time goes on, I'm sure he'll see a more consistent pattern in the demand and can keep the appropriate amount of products in stock but it takes time. This is not a unique problem. For example, I work with Tepui tents and they have an excellent reputation and have huge shipments arriving every month but they still sell out of products from time to time. Unless it's a massive chain of stores like 4Wheel Parts that can move products around from store to store if one runs out, it's just the nature of the business.

Last word I got was that there is a shipment en route from Australia now with another shipment being prepped to go out. I don't recall the exact ETA on the current shipment, and I don't have any way of knowing what what kits are part of the shipment. So again, don't rely on the forum for your primary communication and give Kevin a call at EHO.
 
Status
Not open for further replies.

Users who are viewing this thread

Back
Top Bottom