diff --git a/src/lib.rs b/src/lib.rs
index 7439d16a81..4711fed1c8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,8 @@ pub mod mint;
 pub mod packet;
 pub mod plan;
 pub mod record_stage;
+pub mod request_replicator;
+pub mod replicate_stage;
 pub mod recorder;
 pub mod request;
 pub mod request_processor;
diff --git a/src/replicate_stage.rs b/src/replicate_stage.rs
index 6951f57e03..0bd259f904 100644
--- a/src/replicate_stage.rs
+++ b/src/replicate_stage.rs
@@ -1,22 +1,11 @@
 //! The `replicate_stage` replicates transactions broadcast by the leader.
 
-use bank::Bank;
-use banking_stage::BankingStage;
-use crdt::{Crdt, ReplicatedData};
-use hash::Hash;
-use ledger;
 use packet;
-use record_stage::RecordStage;
-use result::Result;
-use sig_verify_stage::SigVerifyStage;
-use std::net::UdpSocket;
+use request_replicator::RequestReplicator;
 use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::mpsc::channel;
-use std::sync::{Arc, RwLock};
+use std::sync::Arc;
 use std::thread::{spawn, JoinHandle};
-use std::time::Duration;
 use streamer;
-use write_stage::WriteStage;
 
 pub struct ReplicateStage {
     pub thread_hdl: JoinHandle<()>,
@@ -24,13 +13,13 @@ pub struct ReplicateStage {
 
 impl ReplicateStage {
 
-    pub fn new(request_replicator: RequestReplicator, exit: Arc<AtomicBool>, window_receiver: streamer::BlobReceiver, blob_recycler: &packet::BlobRecycler) -> Self {
+    pub fn new(request_replicator: RequestReplicator, exit: Arc<AtomicBool>, window_receiver: streamer::BlobReceiver, blob_recycler: packet::BlobRecycler) -> Self {
         let thread_hdl = spawn(move || loop {
             let e = request_replicator.replicate_requests(&window_receiver, &blob_recycler);
-            if e.is_err() && s_exit.load(Ordering::Relaxed) {
+            if e.is_err() && exit.load(Ordering::Relaxed) {
                 break;
             }
         });
-        ReplicateStage{thread_hdl};
+        ReplicateStage{thread_hdl}
     }
 }
diff --git a/src/request_replicator.rs b/src/request_replicator.rs
index bfb5ef6099..3408af8a30 100644
--- a/src/request_replicator.rs
+++ b/src/request_replicator.rs
@@ -2,32 +2,22 @@
 //! by the leader.
 
 use bank::Bank;
-use banking_stage::BankingStage;
-use crdt::{Crdt, ReplicatedData};
-use hash::Hash;
 use ledger;
 use packet;
-use record_stage::RecordStage;
 use result::Result;
-use sig_verify_stage::SigVerifyStage;
-use std::net::UdpSocket;
-use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::mpsc::channel;
-use std::sync::{Arc, RwLock};
-use std::thread::{spawn, JoinHandle};
 use std::time::Duration;
 use streamer;
-use write_stage::WriteStage;
+use std::sync::Arc;
 
 pub struct RequestReplicator {
     bank: Arc<Bank>,
 }
 
-impl Tvu {
+impl RequestReplicator {
     /// Create a new Tvu that wraps the given Bank.
-    pub fn new(bank: Bank) -> Self {
+    pub fn new(bank: Arc<Bank>) -> Self {
         RequestReplicator {
-            bank: Arc::new(bank),
+            bank: bank,
         }
     }
 
diff --git a/src/tvu.rs b/src/tvu.rs
index f0ec2ccac6..31e291cb7b 100644
--- a/src/tvu.rs
+++ b/src/tvu.rs
@@ -5,16 +5,17 @@ use bank::Bank;
 use banking_stage::BankingStage;
 use crdt::{Crdt, ReplicatedData};
 use hash::Hash;
-use ledger;
 use packet;
 use record_stage::RecordStage;
+use request_replicator::RequestReplicator;
+use replicate_stage::ReplicateStage;
 use result::Result;
 use sig_verify_stage::SigVerifyStage;
 use std::net::UdpSocket;
-use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::atomic::AtomicBool;
 use std::sync::mpsc::channel;
 use std::sync::{Arc, RwLock};
-use std::thread::{spawn, JoinHandle};
+use std::thread::JoinHandle;
 use std::time::Duration;
 use streamer;
 use write_stage::WriteStage;
@@ -35,27 +36,6 @@ impl Tvu {
         }
     }
 
-    /// Process verified blobs, already in order
-    /// Respond with a signed hash of the state
-    fn replicate_state(
-        obj: &Tvu,
-        verified_receiver: &streamer::BlobReceiver,
-        blob_recycler: &packet::BlobRecycler,
-    ) -> Result<()> {
-        let timer = Duration::new(1, 0);
-        let blobs = verified_receiver.recv_timeout(timer)?;
-        let entries = ledger::reconstruct_entries_from_blobs(&blobs);
-        let res = obj.bank.process_verified_entries(entries);
-        if res.is_err() {
-            error!("process_verified_entries {} {:?}", blobs.len(), res);
-        }
-        res?;
-        for blob in blobs {
-            blob_recycler.recycle(blob);
-        }
-        Ok(())
-    }
-
     /// This service receives messages from a leader in the network and processes the transactions
     /// on the bank state.
     /// # Arguments
@@ -132,14 +112,13 @@ impl Tvu {
             retransmit_sender,
         );
 
-        let tvu = obj.clone();
-        let s_exit = exit.clone();
-        let t_replicator = spawn(move || loop {
-            let e = Self::replicate_state(&tvu, &window_receiver, &blob_recycler);
-            if e.is_err() && s_exit.load(Ordering::Relaxed) {
-                break;
-            }
-        });
+        let request_replicator = RequestReplicator::new(obj.bank.clone());
+        let replicate_stage = ReplicateStage::new(
+            request_replicator,
+            exit.clone(),
+            window_receiver,
+            blob_recycler.clone(),
+        );
 
         //serve pipeline
         // make sure we are on the same interface
@@ -178,7 +157,7 @@ impl Tvu {
             t_blob_receiver,
             t_retransmit,
             t_window,
-            t_replicator,
+            replicate_stage.thread_hdl,
             t_gossip,
             t_listen,
             //serve threads
@@ -375,5 +354,4 @@ mod tests {
         t_l_gossip.join().expect("join");
         t_l_listen.join().expect("join");
     }
-
 }