B serious

Everyone does that. Its a very short stroke damper. Honda has been doing that on stock suspensions for a long time.

If you can get some extra travel before touching bumpstop, it may be useful. Definitely not critical.

Food for thought....a 1" drop (measured at the wheel) with Konis or stock shocks would result in about the same space before bumpstop.

The Öhlins (because they are full body adjustable) are going to be compression travel limited - just like all full body shocks. BUT...the travel room doesn't change unless you change the preload. That's their give and take.

Apex1.0

Yep, I had the same issue with my Konis. I run about a 3/4" drop in the rear, plus I cut the bump stop and trimmed the shock sleeve. The difference with the Konis, is they seemed to have more total travel to work with. However they also did not have a length adjuster either.

SakeBomb Garage

2mm rear pre-load is incorrect for this chassis on 8k springs for many driving scenarios (but not all). Email us your cars specs (weight, aero, sway bars front and rear, spring rates, desired ride height, and use case) we can run your car through our calculator and see how close we can help get to you an optimal setup. info@sakebombgarage.com

SakeBomb Garage

Could you share what your spring rates are and how you got your 1.53" compression number?

B serious

Stock Öhlins DFV spring rate (8K).

I set the spring to 198mm out of the car.

When the car is on the ground, I can crawl under it. It has a single exhaust...and I have the physique of the main pirate from Captain Phillips.

I measure the spring length to be 159mm with the car's weight.

(198-159)/25.4 = 1.53"

hecash

Following

B serious

What is the rear shock angle (from imaginary vertical) when the LCA is horizontal?

If my shock angle is around 15deg (from imaginary vertical) at my ride height, then 1.53 works. I'll measure the angle when I have a chance.

I think my car weighs like 2660-2700LB.

So like 670LB per corner maybe.

670 x (cos15) = 680.

680/447 = 1.52.

Close enough to reflect my measurement.


**there are error margins in the unknown since I'm assuming all the weight is sprung (it's not), and that I clocked the bushings perfectly to static height.

Apex1.0

It will be interesting what that will do to the handling.

3.2 total
-1.1 bump stop
-1.0 comp travel

=1.1 extension travel


Rough figures, but is that enough droop travel?

B serious

1" droop at the damper *should* be fine.

B serious

Since you're setting yours up anyway....try 13.25mm (just 13mm is fine lol) of total rear preload. That should give you 1" of free space before bumpstop.

I figured 700LB force on each rear shock for a 100% full weight car (no driver).

LMK how it works if you try it out.