Does this axle / torsion arm look normal? 2005 13' Scamp - Fiberglass RV


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Old 05-15-2014, 07:03 AM   #1
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Name: Roamin
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Does this axle / torsion arm look normal? 2005 13' Scamp

We removed the wheel and drum preparing to add brakes to the Scamp, and someone brought up that the torsion arm looks like it has a problem, being that its in the "up" position. The manual states "The spindle is attached to the torsion arm at about a 22 1/2 degree angle down." I wasn't suspecting a problem with the axle and it's only a 9 y.o. camper that hasn't had a tremendous amount of use nor any accidents that I know of. Does anyone with experience with the newer 13' Scamps have any idea if this looks correct? Husband thinks it has to be like this in order to accommodate the dropped section of floor that would contain a graywater tank if it had one. This Scamp has the front bathroom, no shower, and is the standard model. This is the driver's side. I have sent an email off to Scamp to ask the same question.
Thanks.
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Old 05-15-2014, 08:02 AM   #2
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I just edited my initial post with the exact statement quoted from the Scamp manual that I had downloaded from their website in 2010: "The spindle is attached to the torsion arm at about a 22 1/2 degree angle down." The manual that came with this 2005 camper does not have this information in it. I just checked the clearance above the tire in the wheel well, and it's 4". There are no rub marks inside the wheel well. The torsion arm on both sides look the same.
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Old 05-15-2014, 08:19 AM   #3
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Name: Eddie
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The S-16 and S-19 come with a 22.5 deg. down angle swing arm. The rear facing S-13 axles come with a 22.5 deg up angle axle. I raised a 2005 S-13 a little over 2" by going to a 0 deg. axle. If you have bounce in your axle, no cracks in the mounting brackets, and not a lot of popped rivets you should be OK.
Eddie
There should be a tag on the axle and the serial number is also laser etched in your axle tube. Send these numbers to Dexter and they will tell you what you have installed.
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Old 05-15-2014, 09:19 AM   #4
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Depends on what you call normal.
I'm not as familiar with Scamps as I am with bolers. It is definately an up angle, it appears to have a spacer between the axle and the frame.

The good news is the position of the welded diamond on the arm indicates that not too much "settling" has happened. At rest, like in your picture the top and bottom points should be plumb, with the side points level - relative to the frame.
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Old 05-15-2014, 10:44 AM   #5
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Name: Roamin
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Got a quick reply from Scamp! Now if only I understood exactly what "trailing arm leading" meant.
"The trailers originally had a axle with a leading trailing arm at an
angle of 22 1/2 degrees down. Which we switched to a axle mounting
position which is trailing at 22 1/2 degrees up. Your trailer probably
has the correct axle at the correct angle unless the axle has the
trailing arm leading.

Kent Eveland"
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Old 05-15-2014, 10:48 AM   #6
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Aussie Mom - how is the trailer jacked up? Its always been my understanding that it should only be jacked up on the main forward/aft beam and close to the axle......
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Old 05-15-2014, 10:50 AM   #7
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You have the main tube welded to the frame. then you have arms out that hold the spindle. Leading axle the arms point to the front of the trailer. Trailing the arms point to the rear of the trailer. yours point to the rear and are trailing.
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Old 05-15-2014, 11:49 AM   #8
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Thank you Eddie and Steve. Carol you are correct, it was not jacked correctly.
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Old 05-16-2014, 09:03 AM   #9
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Name: Harvey
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Quote:
Originally Posted by Doghaus View Post
Got a quick reply from Scamp! Now if only I understood exactly what "trailing arm leading" meant.
"The trailers originally had a axle with a leading trailing arm at an
angle of 22 1/2 degrees down. Which we switched to a axle mounting
position which is trailing at 22 1/2 degrees up. Your trailer probably
has the correct axle at the correct angle unless the axle has the
trailing arm leading.

Kent Eveland"
Your pic of the driver side shows a 'trailing' arm with approx 22.5degree up angle, which is what Scamp is saying in their message. With 4" of clearance above the tire to the underside of the wheel well, you're in good shape. My 1984 Scamp 13 has a 'leading' arm configuration & the original Al-Ko 'torsion' axle looked about the same as your pic; absolutely NO flex left in the torsion arm. I replaced it with a new Dexter axle with brakes & 22.5 degree 'down' angle, leading arm.

Easy way to remember 'leading vs trailing' arm is on a trailing arm the spindle is behind the axle tube (in reference to front of trailer) & a leading arm the spindle will always be forward of the axle tube. Most Bolers & early Scamp 13's (not sure about their larger trailers) used a leading arm configuration but that changed to a trailing arm sometime after the mid 1980's...
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Old 05-22-2014, 05:00 PM   #10
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Wink

Quote:
Originally Posted by Harvey View Post

Easy way to remember 'leading vs trailing' arm is on a trailing arm the spindle is behind the axle tube (in reference to front of trailer) & a leading arm the spindle will always be forward of the axle tube.
An even easier way to remember is the TV is leading and the trailer is 'trailing'.
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Old 05-22-2014, 05:28 PM   #11
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Early Trilliums used a leading arm config as well. I have a 1972 1300 with a leading arm.
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Old 05-22-2014, 07:50 PM   #12
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Name: Roamin
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Hi, thanks. I'm all set with this now, I think what was confusing was the term "leading trailing arm". now if it would stop raining we could get back to actually installing the brakes....
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