diff --git a/ophyd_devices/__init__.py b/ophyd_devices/__init__.py
index ea79219..e579239 100644
--- a/ophyd_devices/__init__.py
+++ b/ophyd_devices/__init__.py
@@ -1,6 +1,6 @@
 from .galil.galil_ophyd import GalilMotor
 from .npoint.npoint import NPointAxis
-from .smaract.smaract_ophyd import SmaractMotor
-from .sim.sim import SynAxisMonitor, SynAxisOPAAS
-from .sls_devices.sls_devices import SLSOperatorMessages
 from .rt_lamni import RtLamniMotor
+from .sim.sim import SynAxisMonitor, SynAxisOPAAS, SynFlyer
+from .sls_devices.sls_devices import SLSOperatorMessages
+from .smaract.smaract_ophyd import SmaractMotor
diff --git a/ophyd_devices/sim/__init__.py b/ophyd_devices/sim/__init__.py
index 6e66397..64bcb14 100644
--- a/ophyd_devices/sim/__init__.py
+++ b/ophyd_devices/sim/__init__.py
@@ -1 +1 @@
-from .sim import SynAxisMonitor, SynAxisOPAAS
+from .sim import SynAxisMonitor, SynAxisOPAAS, SynFlyer
diff --git a/ophyd_devices/sim/sim.py b/ophyd_devices/sim/sim.py
index 6519c38..f8418ab 100644
--- a/ophyd_devices/sim/sim.py
+++ b/ophyd_devices/sim/sim.py
@@ -3,6 +3,7 @@ import time as ttime
 import warnings
 
 import numpy as np
+from bec_utils import BECMessage, MessageEndpoints
 from ophyd import Component as Cpt
 from ophyd import Device, DeviceStatus, PositionerBase, Signal
 from ophyd.sim import _ReadbackSignal, _SetpointSignal
@@ -208,6 +209,88 @@ class DummyController:
         print(self.some_var)
 
 
+class SynFlyer(Device, PositionerBase):
+    def __init__(
+        self,
+        *,
+        name,
+        readback_func=None,
+        value=0,
+        delay=0,
+        speed=1,
+        update_frequency=2,
+        precision=3,
+        parent=None,
+        labels=None,
+        kind=None,
+        device_manager=None,
+        **kwargs,
+    ):
+        if readback_func is None:
+
+            def readback_func(x):
+                return x
+
+        sentinel = object()
+        loop = kwargs.pop("loop", sentinel)
+        if loop is not sentinel:
+            warnings.warn(
+                f"{self.__class__} no longer takes a loop as input.  "
+                "Your input will be ignored and may raise in the future",
+                stacklevel=2,
+            )
+        self.sim_state = {}
+        self._readback_func = readback_func
+        self.delay = delay
+        self.precision = precision
+        self.tolerance = kwargs.pop("tolerance", 0.5)
+        self.device_manager = device_manager
+
+        # initialize values
+        self.sim_state["readback"] = readback_func(value)
+        self.sim_state["readback_ts"] = ttime.time()
+
+        super().__init__(name=name, parent=parent, labels=labels, kind=kind, **kwargs)
+
+    def kickoff(self, metadata, num_pos):
+        def produce_data(device, metadata):
+            for ii in range(num_pos):
+                device.device_manager.producer.send(
+                    MessageEndpoints.device_read(device.name),
+                    BECMessage.DeviceMessage(
+                        signals={
+                            "flyer_samx": {"value": ii * 1.22, "timestamp": 0},
+                            "flyer_samy": {"value": ii * 1.45, "timestamp": 0},
+                        },
+                        metadata={"pointID": ii, **metadata},
+                    ).dumps(),
+                )
+                ttime.sleep(0.05)
+                if ii % 100 == 0:
+                    device.device_manager.producer.set_and_publish(
+                        MessageEndpoints.device_status(device.name),
+                        BECMessage.DeviceStatusMessage(
+                            device=device.name,
+                            status=1,
+                            metadata={"pointID": ii, **metadata},
+                        ).dumps(),
+                    )
+            device.device_manager.producer.set_and_publish(
+                MessageEndpoints.device_status(device.name),
+                BECMessage.DeviceStatusMessage(
+                    device=device.name,
+                    status=0,
+                    metadata={"pointID": num_pos, **metadata},
+                ).dumps(),
+            )
+            print("done")
+
+        flyer = threading.Thread(target=produce_data, args=(self, metadata))
+        flyer.start()
+
+        # time.sleep(0.01)
+
+
 class SynAxisOPAAS(Device, PositionerBase):
     """
     A synthetic settable Device mimic any 1D Axis (position, temperature).