Skymaster Forum  

Go Back   Skymaster Forum > Links
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
Thread Tools Rate Thread Display Modes
  #1  
Unread 02-25-20, 12:23 PM
JB78382 JB78382 is offline
Registered User
 
Join Date: Jan 2015
Location: Texas (KRKP)
Posts: 29
JB78382 is on a distinguished road
337 Video

https://youtu.be/Q74aQ_YtaU8
Reply With Quote
  #2  
Unread 03-15-20, 12:40 AM
DrDave DrDave is offline
Registered User
 
Join Date: Nov 2010
Location: Seattle
Posts: 115
DrDave is on a distinguished road
Now he needs to figure out why the doors are open with the gear down
Reply With Quote
  #3  
Unread 03-15-20, 10:09 PM
hharney's Avatar
hharney hharney is offline
Forum Administrator
 
Join Date: Jul 2002
Location: Michigan (8D4)
Posts: 2,253
hharney is on a distinguished road
Quote:
Originally Posted by DrDave View Post
Now he needs to figure out why the doors are open with the gear down
If you read the comments on You Tube and Facebook you will see that they answered the mystery

They pumped the doors open during the preflight and video work and then just forgot they were open.......
__________________
Herb R Harney
1968 337C

Flying the same Skymaster for 47 years
Reply With Quote
  #4  
Unread 03-15-20, 10:54 PM
DrDave DrDave is offline
Registered User
 
Join Date: Nov 2010
Location: Seattle
Posts: 115
DrDave is on a distinguished road
That would require common sense and casual observation, skills I have limited grasp upon. However, why didn't the gear doors close when the engine was started?

Dave
Reply With Quote
  #5  
Unread 03-22-20, 10:53 AM
hharney's Avatar
hharney hharney is offline
Forum Administrator
 
Join Date: Jul 2002
Location: Michigan (8D4)
Posts: 2,253
hharney is on a distinguished road
Quote:
Originally Posted by DrDave View Post
That would require common sense and casual observation, skills I have limited grasp upon. However, why didn't the gear doors close when the engine was started?

Dave
Not sure you totally understand the system, but maybe you are confusing the original 337 hydraulic system with the later electric over hydraulic system.

Original system is an engine driven hydraulic pump that is actuated by a linkage moved by the gear handle on the panel. When the engines are started the pump is ready to work but the handle on the panel has to be operated to allow the system to operate.

Newer electric system used an electric motor to run the hydraulic pump. The gear switch on the panel was just a mouse click with no actual linkage connected to the system. When the master switch was turned on the pump was primed and ready. If there were micro switches on the gear that were not closed the pump would actuate to close the system.

This 337 in the video was an older system with gear pumps on the engines. If you used the hand emergency pump handle to open the gear doors for inspection during pre-flight, then the doors would not move back close unless you turned on the master switch and pumped the E handle or once the engines are started you could select the gear handle down and it would close the doors on the ground.
__________________
Herb R Harney
1968 337C

Flying the same Skymaster for 47 years
Reply With Quote
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is On
Forum Jump


All times are GMT -4. The time now is 12:13 PM.


Powered by vBulletin® Version 3.6.9
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.