diff --git a/server/src/engine/engine.go b/server/src/engine/engine.go
index 0a7a27f..3937561 100644
--- a/server/src/engine/engine.go
+++ b/server/src/engine/engine.go
@@ -9,6 +9,7 @@ import (
 
 func NewEngine(id string) *Engine {
 	engine := Engine{
+		id:  id,
 		obs: observer.NewProperty(syncdata.SyncData{}),
 	}
 	return &engine
@@ -18,12 +19,8 @@ func (engine *Engine) Run() {
 	for {
 		value := engine.obs.Value().(syncdata.SyncData)
 		fmt.Printf("sleep: %d\n", value.VersionRef)
-		time.Sleep(1 * time.Second)
+		time.Sleep(2 * time.Second)
 		value.VersionRef++
 		engine.obs.Update(value)
 	}
 }
-
-func (engine *Engine) GetHttpHandler() HandleFunc {
-	return SyncFactory(engine.obs)
-}
diff --git a/server/src/engine/struct.go b/server/src/engine/struct.go
index cfd2e82..6c6c67b 100644
--- a/server/src/engine/struct.go
+++ b/server/src/engine/struct.go
@@ -8,5 +8,6 @@ import (
 type HandleFunc func(http.ResponseWriter, *http.Request)
 
 type Engine struct {
+	id  string
 	obs observer.Property
 }
diff --git a/server/src/engine/sync.go b/server/src/engine/sync.go
index 588097b..01eac4f 100644
--- a/server/src/engine/sync.go
+++ b/server/src/engine/sync.go
@@ -3,20 +3,19 @@ package engine
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/imkira/go-observer"
 	"net/http"
 	"sirlab.de/go/knyt/syncdata"
 	"strconv"
 )
 
-func SyncFactory(obs observer.Property) HandleFunc {
+func (eng *Engine) GetHttpHandler() HandleFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		versionRef, err := strconv.Atoi(r.URL.Query().Get("v"))
 		if err != nil {
 			versionRef = -1
 		}
 
-		stream := obs.Observe()
+		stream := eng.obs.Observe()
 		var value syncdata.SyncData
 		for {
 			value = stream.Value().(syncdata.SyncData)