Like Tree0Likes

Engine hatch limit switch question?

Reply
Old 05-23-2007, 07:51 AM
  #1
Registered
Thread Starter
 
Join Date: May 2007
Posts: 6
Default Engine hatch limit switch question?

I have an engine hatch electric ram installed. I believe if travel was not hindered it would spin free in the fully extended and fully closed positions. However, in my installation, due to space constraints, the ram is not fully retracted when the hatch is closed.

Therefore, if I am not careful when closing I can rip the ram from its mount on the hatch. I would like to install a limit switch for the fully extended and closed positions. Any ideas where I can secure limit switcjhes capable of handling the amps?

TIA
Illustrator
Illustrator69 is offline  
Reply With Quote
Old 05-24-2007, 06:12 AM
  #2
Gold Member
Gold Member
 
Iggy's Avatar
 
Join Date: Jan 2001
Location: Kissimmee, Florida
My Boats: '88 Formula F-206 LS
Posts: 4,155
Default

The ram (screw jack) should have a clutch that will allow it to slip (a loud clicking) when it reaches the end of travel or something stops the hatch from moving. Mine does. Only problem is as they get older they tend to jam if allowed to run till the clutch slips. Mine gets stuck about once a season. I tear it apart, free it, grease it and all is well again....till next time.

If I can find it I'll post it.

I've been trying to come up with a limit circuit for a while now. One member did draw up a schematic....I have it someplace. I do recall seeing an ad for an add-on box that will do exactly what your looking for, just can't remember where I saw it.
Iggy is offline  
Reply With Quote
Old 05-24-2007, 07:01 AM
  #3
Ginger or Mary Ann?
Charter Member
Trade Score: (1)
 
US1 Fountain's Avatar
 
Join Date: Oct 2000
Location: Lafayette. IN
Posts: 10,871
Default

There were actuators with built in adjustable limits mentioned real recently. Looked slick.
US1 Fountain is offline  
Reply With Quote
Old 05-24-2007, 08:44 AM
  #4
Registered
Thread Starter
 
Join Date: May 2007
Posts: 6
Default Limit switches

Thanks guys. I had wondered if the unit had built in limit switches, but I got it from a salvage yard and didn't see any. Spoke w/ an electrician buddy who gave me a source for normally closed/open limit switches. Will pick them up today.

If you come up with the schematic on how to wire 'em up I would appreciate it. There are way too many wires on the momentary switch for my limited electrical background.
Illustrator69 is offline  
Reply With Quote
Old 05-24-2007, 03:56 PM
  #5
Registered
Thread Starter
 
Join Date: May 2007
Posts: 6
Default

FYI, I found s SPDT momentary switch which can be wired normally open or normally closed. They were only $23.00 each. Picked up 2. Will dope out the wiring this weekend and post it when I have them working.
Illustrator69 is offline  
Reply With Quote
Old 05-24-2007, 04:41 PM
  #6
Ginger or Mary Ann?
Charter Member
Trade Score: (1)
 
US1 Fountain's Avatar
 
Join Date: Oct 2000
Location: Lafayette. IN
Posts: 10,871
Default

Keep in mind most hatch lifts are 2 wire design. They just reverse the polarity to change from up to down. If you simply install a limit switch to break the circut,will be good for a 1 time shot, but ain't going to raise the hatch back up.
US1 Fountain is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Illustrator69
Classic Offshore
1
05-22-2007 09:16 AM
handfulz28
Formula
5
04-19-2007 10:30 PM
chevy57
General Q & A
1
07-13-2004 10:28 AM
j winkelman
Fountain
4
06-06-2004 07:00 PM
Fast Shafts
General Racing Discussion
20
11-02-2002 09:12 AM



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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 04:06 PM.


Copyright 2011 OffShoreOnly. All rights reserved.