- Thread starter
- #121
So are you saying there is a very small transitional rate from the stacked coils to the open coils as the wire gets thicker?
Compiled 80 series suspension component spec thread... shocks, coils & more. (12 Viewers)
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- Thread starter
- #122
Work in progress... If you see any discrepancies please PM me.
I'll be doing this to the OME charts also to make them look better.
2" Tapered
2.5" front C97-146VT
2" rear C97-147VT
3" Tapered
(The 6" lift shocks suit the 3" Tapered lift.)
3.5" front C97-144VT
3" rear C97-145VT
2" Flexi
2" front C59-222V
2" rear C59-223V
3" Flexi
(The 3" or 4" lift shocks suit the 3" Flexi lift.)
Front C59-612V
Rear C59-613V
4" Flexi
(The 4" or 6" lift shocks suit the 4" Flexi lift.)
Front C59-614V
Rear C59-615V
I'll be doing this to the OME charts also to make them look better.
2" Tapered
2.5" front C97-146VT
2" rear C97-147VT
3" Tapered
(The 6" lift shocks suit the 3" Tapered lift.)
3.5" front C97-144VT
3" rear C97-145VT
2" Flexi
2" front C59-222V
2" rear C59-223V
3" Flexi
(The 3" or 4" lift shocks suit the 3" Flexi lift.)
Front C59-612V
Rear C59-613V
4" Flexi
(The 4" or 6" lift shocks suit the 4" Flexi lift.)
Front C59-614V
Rear C59-615V
@David Otero for the win ! Looks like myself and everyone else won't be crying about the mystery spring rates anymore. Guess we will have to find something else to focus on.
- Thread starter
- #124
@crikeymike @David Otero
Thanks again for getting the specs... now that I've looked at them I realized that the free height on the 2.5" Tapered Coils are same as the 3.5" Tapered Coils. They can take the longer shocks on exstension, but run into limiting issue on uptravel...
My question is do you have a recommendation for bump stops to protect these on the 6" lift shocks for 80 series?
6" shocks
GS69-684 front - 16.53" -28.66"
GS69-685 rear - 17.00" - 28.74"
Does Dobinson sell bump stops?
Thank you for your time
Gary
Thanks again for getting the specs... now that I've looked at them I realized that the free height on the 2.5" Tapered Coils are same as the 3.5" Tapered Coils. They can take the longer shocks on exstension, but run into limiting issue on uptravel...
My question is do you have a recommendation for bump stops to protect these on the 6" lift shocks for 80 series?
6" shocks
GS69-684 front - 16.53" -28.66"
GS69-685 rear - 17.00" - 28.74"
Does Dobinson sell bump stops?
Thank you for your time
Gary
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- Thread starter
- #125
@DylanICON
Do you have a recommendation for bump stops to protect the 56511 & 56512 shocks for 80 series?
2.0 VS IR shocks 4" to 6" lift
Front 56511 16.85" - 28.17"
Rear 56512 16.85" - 27.42"
Thank you
Gary
Do you have a recommendation for bump stops to protect the 56511 & 56512 shocks for 80 series?
2.0 VS IR shocks 4" to 6" lift
Front 56511 16.85" - 28.17"
Rear 56512 16.85" - 27.42"
Thank you
Gary
You’ll need about 1.5” bumpstop drop to barely protect a 17” compressed shock length in the rear. There’s no magic.
This is 2” drop for 17.25. You can see how much travel is left. How much you believe a rubber stop can compress on a hard hit in terms of how much extra you want...up to you. I’d say you could get away with 1.5” for the rear 6” shock.
- Thread starter
- #127
@Nay thank you... I also have done this, but would like the representative of the manufactures recommend what is need to protect their shocks. This is not just for me, it is for all who read this thread.
Some shocks have internal bumps protection & don't need bump stops to protect them.
Some shocks have internal bumps protection & don't need bump stops to protect them.
Many shocks have internal DROOP stops.
I would not recommend bumping on the shocks at all. Not just for the shocks sake but more because the mounts were not designed to be hit this hard. Some shocks do have rubber bumpers on the shaft but that is more common on universal "race" shocks where it is up to the vehicle fabricator to determine its use.
Box Rocket
SILVER Star
So talk more about how the internal "bump zone" works on Icon shocks.
The "Bump Zone" on our 2.5" shocks is a valving zone not a physical stop.
It increases the Damping by 20% of whatever your base vavling is in both compression AND rebound in the last couple of inches of travel of the shock.
In any reservoir shock the oil that goes to the reservoir is forced there by the shaft displacement. As the shaft enters the shock body that volume of oil must be displaced and goes to the reservoir. In most shocks the reservoir is attached at the top cap of the shock. In our shocks we port the reservoir through the cylinder wall a couple inches down from the top. As the piston passes the port the oil that is on its way to the reservoir now must go through the piston first to get there. This increases flow and subsequently the force it generates based on the piston to cylinder ration which is about 20%. This costs more of course because there is now a manifold on the shock cylinder, cross holes, O-rings, a piston band that can go over the cross holes and survive, more assembly, ext.
The benefit is not just on compression, but also on rebound. It pairs VERY well with a compression dual rate spring. As the suspension compresses and transitions to the heavier 2nd rate there is more energy stored in the spring. The additional rebound damping in this zone controls the extra energy better and reduces the reaction or heave out.
- Thread starter
- #132
@DylanICON
Do you have a recommendation for bump stops to protect the 56511 & 56512 shocks for 80 series?
2.0 VS IR shocks 4" to 6" lift
Front 56511 16.85" - 28.17"
Rear 56512 16.85" - 27.42"
Thank you
Gary
Do you have a recommendation for bump stops to protect the 56511 & 56512 shocks for 80 series?
2.0 VS IR shocks 4" to 6" lift
Front 56511 16.85" - 28.17"
Rear 56512 16.85" - 27.42"
Thank you
Gary
- Thread starter
- #133
David PM'd me with this info...
Hey mate,
This information was just emailed to me from OZ.
4" shocks:
GS45-912 needs about half inch of bump stop extension with a minimum of 525 coil length
GS59-687 - needs a 2” bump extension approx. With a 505mm minimum coil free height to stay trapped.
6" shocks:
GS59-684 needs about 1.5” - 2” bump stop spacing with a coil length of 570mm to stay trapped.
GS59-685 - 6” needs a 3” extension and minimum of approx 555mm coil length to stay trapped.
Hey mate,
This information was just emailed to me from OZ.
4" shocks:
GS45-912 needs about half inch of bump stop extension with a minimum of 525 coil length
GS59-687 - needs a 2” bump extension approx. With a 505mm minimum coil free height to stay trapped.
6" shocks:
GS59-684 needs about 1.5” - 2” bump stop spacing with a coil length of 570mm to stay trapped.
GS59-685 - 6” needs a 3” extension and minimum of approx 555mm coil length to stay trapped.
1 inch front and rear
you can probably get away with less in the front but you would have to check
- Thread starter
- #135
Thank you @DylanICON & @David Otero for your contribution to this thread.
- Thread starter
- #137
7501 75mm Intermediate 10.5 turns~18mm~160/270#
7511 75mm Heavy Duty 10.5 turns~19mm~160/320#
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- Thread starter
- #138
75mm Slinky 7948 fronts 600/615mm~13.5 turns~160/260#
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Dobinson’s front 4” Flexi installed. This coil is shorter than the rear, about 22.5” free height. Way more coil than the front can use in any case - I dropped the whole front end on both sides to the stretch point of the brakeline, leveraged out the old coil with a 4’ bar and kick method, and then used compressors again for the Flexi.
As compared to the FOR Gen II it replaces.
I’ve picked up about an inch of lift at all four corners. I’m right about 25.5 hub to fender (no flares), wrapped around the tire. I’ll measure more carefully tomorrow in the daylight.
Ride quality for my relatively light rig with the Fox 2.0 remote reservoir shocks is outstanding. The front feels pretty much the same outside of what I think was some coil damage from my accident - the front driver’s got torqued pretty good with frame bend and a bent radius arm and it had lost about a half inch of height.
It’s the rear that feels like it has more control - there is a lot of extra coil and it feels extremely well dialed. This seems a shift in rear coil design philosophy, more than just “longer shock”.
Definitely a clean 4-4.5” lift and seems very well thought out and executed. My 37’s are going to look a little bit small now. The coil color, OTOH, is perfect.
As compared to the FOR Gen II it replaces.
I’ve picked up about an inch of lift at all four corners. I’m right about 25.5 hub to fender (no flares), wrapped around the tire. I’ll measure more carefully tomorrow in the daylight.
Ride quality for my relatively light rig with the Fox 2.0 remote reservoir shocks is outstanding. The front feels pretty much the same outside of what I think was some coil damage from my accident - the front driver’s got torqued pretty good with frame bend and a bent radius arm and it had lost about a half inch of height.
It’s the rear that feels like it has more control - there is a lot of extra coil and it feels extremely well dialed. This seems a shift in rear coil design philosophy, more than just “longer shock”.
Definitely a clean 4-4.5” lift and seems very well thought out and executed. My 37’s are going to look a little bit small now. The coil color, OTOH, is perfect.
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