Slinky Long Travel Suspension Systems

Discussion in 'Endless Horizon Outfitters' started by dockbox, Sep 5, 2017.

  1. GW Nugget

    GW Nugget There's nothing funnier thn dyslexic perfectionist

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    @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)
     
  2. GW Nugget

    GW Nugget There's nothing funnier thn dyslexic perfectionist

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    @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: Jun 9, 2018
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  3. GW Nugget

    GW Nugget There's nothing funnier thn dyslexic perfectionist

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    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
     
  4. AutoCraft Aus

    AutoCraft Aus Araco Master GOLD Star

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    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.
     
  5. GW Nugget

    GW Nugget There's nothing funnier thn dyslexic perfectionist

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    Adam provided them on page #2 of this thread.
    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: Jun 9, 2018
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  6. GW Nugget

    GW Nugget There's nothing funnier thn dyslexic perfectionist

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    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)
     
  7. Lumpskie

    Lumpskie

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    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.
     
  8. Box Rocket

    Box Rocket

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    Intermediate rate springs are available as dual rate as well.
     
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  9. GW Nugget

    GW Nugget There's nothing funnier thn dyslexic perfectionist

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    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
    [​IMG]
    [​IMG]





    [​IMG]

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

    [​IMG]

    7501 75mm Intermediate 10.5 turns~160/270#
    [​IMG]

    [​IMG]

    7511 75mm Heavy Duty 10.5 turns~160/320#
    [​IMG]

    [​IMG]
    These are 2.0 IFP AutoCraft Spec shocks
    [​IMG]

    On rig under weight
    [​IMG]

    Slinky vs OME 850J
    [​IMG]

    Slinky rear bump stop is 30mm taller than stock. (this would equal a 30mm bump stop extension).[​IMG]


    ~~~~~~~
    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.

    [​IMG]

    Millimeters to Inches (mm to in) conversion calculator
     
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  10. GW Nugget

    GW Nugget There's nothing funnier thn dyslexic perfectionist

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    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?
     
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  11. cahill

    cahill

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    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.
     
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