diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Data/Gearbox/GearData.cs b/VectoCore/VectoCore/Models/SimulationComponent/Data/Gearbox/GearData.cs
index 278905f0adaa182c637e22ccc328a66d1487e4f0..193add57691e876070d90db5f55f118c5cda1c84 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Data/Gearbox/GearData.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Data/Gearbox/GearData.cs
@@ -42,7 +42,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Data.Gearbox
 		[ValidateObject]
 		public TransmissionLossMap LossMap { get; internal set; }
 
-		[Required, RangeOrNaN(double.Epsilon, 100)]
+		[Required, RangeOrNaN(double.Epsilon, 500)]
 		public double Ratio { get; internal set; }
 	}