diff --git a/test/test_kps4.jl b/test/test_kps4.jl
index cfcdf5af..1a202e9f 100644
--- a/test/test_kps4.jl
+++ b/test/test_kps4.jl
@@ -529,6 +529,13 @@ end
     # TODO Add testcase with varying reelout speed 
 end
 
+@testset "Raptures" begin
+    kps4_ = KPS4(KCU(se()))
+    integrator = KiteModels.init_sim!(kps4_; stiffness_factor=0.035, prn=false)
+    kps4_.stiffness_factor = 2
+    @test maximum(spring_forces(kps4_)) > 20000
+end
+
 # TODO Add test for winch_force
 @testset "test_copy_examples" begin
     cd(tempdir())