Answers.Body: <p>As you can see in the picture below the friction has to do with driving the worm wheels via regular gears while pushing the unit by hand and yes, I guess the gear teeth on the wheel axles could be damaged because of the gear ratio.</p>
  
  <p><a href="https://i.sstatic.net/kVNap.jpg" rel="noreferrer"><img src="https://i.sstatic.net/kVNap.jpg" alt="Opened 12v train motor"></a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-08-27T05:07:52.337Z
Answers.Text: This looks like an early version of the 7865 motor.
Answers.UserDisplayName: CJBS
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-11-24T03:30:26.877Z
Answers.Text: How did you remove the wheel from its axle??
Answers.UserDisplayName: LegoTrainz2003
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-08-27T02:35:22.940Z
Answers.LastActivityDate: 2015-08-27T02:35:22.940Z
Answers.UserDisplayName: Niels
Body: <p>This question is similar to <a href="https://bricks.stackexchange.com/questions/1706">one for PF motors</a>.</p>
  
  <p>The 12V motor bogie has considerably more resistance than does the newer PF bogie motor, which may be moved very easily when not operating.</p>
  
  <p>So, if one pushes a 12V-motorized train by hand, will it cause damage to the motor?</p>
  
  <p>See title "Set 7865: six wheeled Lego® train motor (12V, 1980 - 1990)" on <a href="http://horst-lehner.mausnet.de/lego/ben/9v_12v.html" rel="nofollow noreferrer">this page</a> for the specific motor I'm referring to.</p>
  
  <p>Side note: I've noticed that the connected headlights in <a href="http://lego.wikia.com/wiki/7740_Inter-City_Passenger_Train_Set" rel="nofollow noreferrer">the train</a> don't illuminate when pushed by hand (and have <a href="https://bricks.stackexchange.com/questions/6648/what-prevents-a-12v-motor-when-pushed-by-hand-from-providing-dc-electric-out">asked a question</a> specifically in regards to this).</p>
  
Tags: <motor><trains><12v>
Title: Will playing with a 12V train motor by hand damage it?
UserDisplayName: CJBS
ThreadText: # Will playing with a 12V train motor by hand damage it?
  
  (Asked by: username_0 on 2015-05-20)
  
  This question is similar to [one for PF motors](https://bricks.stackexchange.com/questions/1706).
  
  The 12V motor bogie has considerably more resistance than does the newer PF bogie motor, which may be moved very easily when not operating.
  
  So, if one pushes a 12V-motorized train by hand, will it cause damage to the motor?
  
  See title "Set 7865: six wheeled Lego® train motor (12V, 1980 - 1990)" on [this page](http://horst-lehner.mausnet.de/lego/ben/9v_12v.html) for the specific motor I'm referring to.
  
  Side note: I've noticed that the connected headlights in [the train](http://lego.wikia.com/wiki/7740_Inter-City_Passenger_Train_Set) don't illuminate when pushed by hand (and have [asked a question](https://bricks.stackexchange.com/questions/6648/what-prevents-a-12v-motor-when-pushed-by-hand-from-providing-dc-electric-out) specifically in regards to this).
  
  **Tags:** motor, trains, 12v
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-08-27. Score: 5 | Accepted answer
  
  As you can see in the picture below the friction has to do with driving the worm wheels via regular gears while pushing the unit by hand and yes, I guess the gear teeth on the wheel axles could be damaged because of the gear ratio.
  
  [![Opened 12v train motor](https://i.sstatic.net/kVNap.jpg)](https://i.sstatic.net/kVNap.jpg)
  
  > **Comments:**
  > **username_0**: This looks like an early version of the 7865 motor.  
  > **username_2**: How did you remove the wheel from its axle??  
  
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