diff --git a/content/blog/FTC_2024_-2025_-_une_base_roulante_holonome.en.md b/content/blog/FTC_2024_-2025_-_une_base_roulante_holonome.en.md
index d046694..87904db 100644
--- a/content/blog/FTC_2024_-2025_-_une_base_roulante_holonome.en.md
+++ b/content/blog/FTC_2024_-2025_-_une_base_roulante_holonome.en.md
@@ -1,8 +1,8 @@
 ---
 title: "FTC 2024 -2025 : an omnidirectional rolling base"
-date: "2024-10-13T17:52:17+02:00"
-lastmod: "2024-10-14T12:06:17+02:00"
-lastupdate: "2024-10-14T12:06:17+02:00"
+date: "2024-10-13T15:52:17+02:00"
+lastmod: "2024-10-14T12:08:29+02:00"
+lastupdate: "2024-10-14T12:08:29+02:00"
 author: "coach.francois"
 authors: ["coach.francois"]
 facebook_author: "false"
@@ -50,6 +50,7 @@ After 4 hours of investment, the Mecanum basic prototype is ready and a draft Ja
 <img src="https://werobot.fr/posts/macanum3.jpg" alt="">
 </div>
 </center>
+<br>
 
 ## Mecanum Wheel Setup and Behavior
 
@@ -82,6 +83,19 @@ To know if your Mecanum Wheels are properly configured look from the top down on
 
 ## Mecanum Wheel Drivetrain Behavior
 
+Running all four wheels in the same direction at the same speed will result in a forward/backward movement, as the longitudinal force vectors add up but the transverse vectors cancel each other out, as shown below.‌
+
+<br><br>
+<center>
+<div style="width: 100%; max-width: 700px;">
+<img src="https://werobot.fr/posts/Mecanum_avant_arriere.png">
+</div>
+</center>
+<br><br>
+
+
+
+