Up travel v Droop

[gusthewonderslug]

Ok gear heads, as per my previous post (springs and shocks)
Looking at the terraflex site and others I've noted that most suspension upgrades/ lifts come with extended bump stops, I understand that the bump stops are there to stop coil bind and bottoming out of shocks, my question is what is the recommended gap between axle and bump stop obviously there should be some otherwise the axle will strike the bump-stop on each and every bump.
Looking forward to opinions and reasons.

[SeaComms]

Personally i think the ideal would be shocks sitting at approx mid travel, ie similar uptravel to downtravel.

However other things come into play like tyre to guard clearance needing smaller uptravel etc.

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[MightyMouse]

Originally Posted by SeaComms

Personally i think the ideal would be shocks sitting at approx mid travel, ie similar uptravel to downtravel.

However other things come into play like tyre to guard clearance needing smaller uptravel etc.

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That really depends on how much shock travel you have.... 50% on a 36" shock is way too much. Up travel for comfort, droop for capability.

So its a compromise with long travel to keep the travel less than the shocks compressed length. Having SpeedBumps also helps smooth things out on compression.

[Wooders]

Depends also on the intended usage.
If you look at a lot of RockCrawling buggies they are often about 30%up and 70%down
The compromise is low cog v's sufficient bump gap so it's not constanly bottoming out.
But spring rate and type (linear/progressive/etc) as well as type/sZie/rating of bumpstop also com into play.
As a rough rule of thumb, for general use, I like to see about 60% down. But if it was a comp setup that would likely change - largely depending on the specific vehicle setup and intented type of comp.

As for "my question is what is the recommended gap between axle and bump stop " there is no magic number that can be regurgitated. Preventing coil overcompression is the key thing as that can lead to coil damage and premature sagging. How much bumpstop depends on the specific coil (not the ride height).

[MDK]

Have a look at the last couple pages on the shocks for mopar springs thread. I just had to adjust my rear shocks as they were extending fully limiting travel. Will show how much difference getting it wrong or right can make to possible flex. Im now limited by factory control arms and sway bar.

[Thol]

Depends on what your using it for. Here's mine as I looked at this when trying to figure it all out. I was after a modest lift and better corragated road travel with only occasional tricky terain.
Started with SS flexy at lowest lift available, ended up around 40mm.
Installed Fox 2.0 0-2" shocks.
Compressed length is similar to OEM so up travel is the same and can retain existing bumpstops.
Extended length is about 40mm longer than OEM so droop matches lift height.
The overall increased travel is more about the uptravel, an advantage with a high speed rut etc.
This modest lift suited my budget and needs. Needed only minor tweeks to brake line and ABS wire retainers.
Haven't done anythig about longer swaybar links to suit, it's not bad just on the nice to do list. Still run standard wheels.
2012 JKU also doubles as wifes DD

[milky01]

Originally Posted by Thol

Depends on what your using it for. Here's mine as I looked at this when trying to figure it all out. I was after a modest lift and better corragated road travel with only occasional tricky terain.
Started with SS flexy at lowest lift available, ended up around 40mm.
Installed Fox 2.0 0-2" shocks.
Compressed length is similar to OEM so up travel is the same and can retain existing bumpstops.
Extended length is about 40mm longer than OEM so droop matches lift height.
The overall increased travel is more about the uptravel, an advantage with a high speed rut etc.
This modest lift suited my budget and needs. Needed only minor tweeks to brake line and ABS wire retainers.
Haven't done anythig about longer swaybar links to suit, it's not bad just on the nice to do list. Still run standard wheels.
2012 JKU also doubles as wifes DD

Hey Thol, I'm in a similar boat and after a modest coil lift on my 2013 JKU. How have you found the spring/shock change on affecting road ride compared to stock?
Basically I'm looking to max 50mm ride height increase with 10-15mm via tyre size and the rest via springs, would you know if any geometry/trackbar correction brackets would improve the setup?