"High lift axles" - Escape Trailer Owners Community

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Old 05-18-2015, 06:07 PM   #1
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"High lift axles"

This isn't really about a specific modification, but there doesn't seem to be a forum category for technical discussion of mechanical components...

Quote:
Originally Posted by rbryan4 View Post
The high lift axles aren't listed as an option anymore because they're standard on new builds.
Okay, that means there's no higher option. What features of the standard configuration constitute "high"? I'm not questioning whether or not the current configuration is appropriate... just wondering what it is, and what it was.

The height of a trailer with Torflex suspension depends on three factors:
  1. the arm starting angle
    • This is the angle from horizontal of the suspension arm when there is no load on it. Sit the trailer on the ground and the arm tilts up, add cargo or go over a bump and it tilts up further.
  2. the bracket height
    • The low choice puts the square tube against the trailer structure with only the thickness of a steel plate between them; the high brackets add an inch or so of space.
  3. spacers between the Torflex structure and the trailer frame
    • Spacers are usually steel tubes, and boost the trailer frame and body up, with the axle/suspension assembly staying at the same height.
  4. tire radius

Robert and other 21-foot (or even other size) owners, the attached photo shows a demo unit at the factory 2014 Apr 21; it may be a 17-foot, but I think they all had the same suspension arm angle, bracket type, and mounting style (this photo is just from the best angle for this purpose).

Does yours look like this? It has:
  1. moderate down angle under load of empty trailer
    • it's hard to see in this photo, but the bulbous end of the arm at the hub is down toward the camera from where it pivots in the end of the square tube, not (for instance) at the same height (which would be zero angle) or higher than the tube (which would be an "up" angle)
    • this one has a moderate down start angle of probably 22.5 degrees, and so it sits about 10 degrees down when carrying the trailer weight; I think this is typical of Escapes
  2. low bracket (square tube right up against frame)
  3. no spacer
    • (every demo trailer I've seen at the factory has no spacer)
Attached Images
File Type: jpg EscapeSuspension.jpg (51.0 KB, 61 views)
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Old 05-18-2015, 06:55 PM   #2
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I'm in Louisville on business so I can't check it but I can tell you our 19 rides just a little higher than some older 19s at the Bluebonnet Rally. They didn't order the high lift.
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Old 05-18-2015, 08:42 PM   #3
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Thanks Robert - there's no rush.
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Old 05-18-2015, 08:49 PM   #4
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Quote:
Originally Posted by rbryan4 View Post
I'm in Louisville on business so I can't check it but I can tell you our 19 rides just a little higher than some older 19s at the Bluebonnet Rally. They didn't order the high lift.
You ordered high lift? I understood that 19's had it standard from three or four years ago. No telling from what we hear.
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Old 05-18-2015, 09:01 PM   #5
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Timely thread. One of the things I'm wondering about since I plan offroad, blm etc.

I'd seen lift kit listed for the 17 but not the 19. I asked ETI and Crystal told me last week "The 19 can have a lift kit installed, $300. Many of our customers take their trailers “off the beaten path” – I would suggest consulting the forum for more first-hand feedback."

I'm planning on getting this but hadn't gotten to searching the forum on this topic yet.

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Old 05-18-2015, 09:09 PM   #6
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I will be watching this thread as we plan to go offroad some in ours... I may have to add this to my options. However, when we got our casita we got high lift and I think it added maybe
1 1/2". The Escape option may be very different.
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Old 05-18-2015, 10:06 PM   #7
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Quote:
Originally Posted by Floating Cloud View Post
You ordered high lift? I understood that 19's had it standard from three or four years ago. No telling from what we hear.
No, we didn't. Ours came with a higher lift standard. I was comparing it to older 19s where the high lift was optional but not ordered.
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Old 05-19-2015, 01:26 AM   #8
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Quote:
Originally Posted by Jeff in Salinas View Post
I'd seen lift kit listed for the 17 but not the 19. I asked ETI and Crystal told me last week "The 19 can have a lift kit installed, $300. Many of our customers take their trailers “off the beaten path” – I would suggest consulting the forum for more first-hand feedback."
That suggests a bolt-in spacer kit... but the fact that it is available, and in addition to the now-standard "high lift axle", suggests that the "high lift" is something else, such as a downward arm angle.

Thus my desire to learn how the suspension is configured when "high lift" and otherwise.
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Old 05-19-2015, 02:58 PM   #9
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This is where I need to learn more about this. If a 'high lift axle' already do I really need the lift kit? What are the differences? Anyone have any issues with just the new high lift axle and going boondocking?

Jeff
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Old 05-19-2015, 03:07 PM   #10
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Quote:
Originally Posted by Jeff in Salinas View Post
This is where I need to learn more about this. If a 'high lift axle' already do I really need the lift kit? What are the differences? Anyone have any issues with just the new high lift axle and going boondocking?

Jeff
Ours appears to have a good amount of clearance, but then again, we don't take it in rough off road conditions or roads with a high center or ruts. In a few of the places we boondocked, the road was rough or unpaved, but not rutted or having any obstructions which would hit the bottom. As to how much extra clearance is obtained by a "high lift" vs the standard, my suspicion is that it's 2" or less. I suppose if you wanted to take your 19 on much rougher terrain, a lift kit would be advisable, but there's more to taking your trailer into such rough conditions than just the ground clearance.
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