Looking for some Door Hinges.... - Fiberglass RV


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Old 06-12-2007, 08:57 PM   #1
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Trailer: 1981 13 ft Scamp / 2004 Ford Explorer
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Hey Everyone,

I have a '81 Scamp and my door is starting to sag, due to the wear of the hinges over the years. I was just wondering if there was any place anyone would know to get them other from Scamp?? I assume its a pretty common problem, as I have seen several with the same issue.

Just wanting to do some research before running out and buying the first one's I find.

Thanks!

Nick
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Old 06-13-2007, 01:07 AM   #2
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I haven't found another supplier so far. I just got a set from Scamp this week...$26.00 plus $6.00 shipping to Washington. Or if you only need the brass balls and springs, you can buy them separately.
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Old 06-13-2007, 12:10 PM   #3
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Boler owners, like myself, routinely go to Scamp for hinge parts (I got two rebuild kits). I suspect that they're your only source... but they're cheap for replacement bits and reasonable (in my opinion) for the whole hinge, so I'm okay with that.
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Old 06-13-2007, 05:13 PM   #4
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The hinge design is such that the brass balls wear out before the hinge parts do, so you might want to investigate just replacing the balls and springs. New balls are perfectly round.
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Old 06-13-2007, 05:57 PM   #5
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...New balls are perfectly round.
... except for the flat areas around each end of the hole, but I get the point: they're not oval, and if yours are, they're worn. The following image shows my two worn balls, flanking a new one:

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I agree that it's the balls that wear first; it looks like mine wore much more than the hinge halves, although I have no new-condition hinge halves for comparison. I replaced only the balls (and springs and bolts) as Pete suggests, although in the Boler case that's a more obvious choice, because Boler and Scamp hinge halves mount differently, so they're not a trivial exchange.
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Old 06-14-2007, 01:56 AM   #6
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Trailer: Burro 13 ft 1983
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A related observation and question: I've also been trying to deal with a sagging Burrow door. I note that most fiber. trailer doors are only supported by the hinges even when closed. Why they are designed this way is a question. This appears to me to put much stress on the hinges and hinge screws - all resulting in door sag. I've been trying to work out, not elegant yet, an arrangement that supports the door at the latch when its closed. The door position shifts slightly depending on temperature and trailer position - so a support must have some tolerance for up and down door movement, prerably dampened by springs. Would appreceiate other observations or solutions along this line.

Thanks, James
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Old 06-14-2007, 07:07 AM   #7
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When I replaced the hinges on my Boler with new Scamp hinges, I put an aluminum backing plate behind each hinge on the inside of the Boler to strengthen the entire arrangement and reduce flexing. It has worked out well. Alec
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Old 06-14-2007, 08:36 AM   #8
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I was just wondering if there was any place anyone would know to get them other from Scamp??

Nick
Uhh... I presume that you could even have them machined from solid brass stock if you can't find another source... but why would you even spend the time and money to look? For the princely sum of $5.00 (plus s&h of course) you can get new replacement balls and springs directly from Scamp (from their price list)

Roger
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Old 06-14-2007, 01:29 PM   #9
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While the balls could be readily reproduced (and are not worth doing), the actual hinge halves would take much more effort. Despite that, I did read about someone who was doing it - machining them from solid aluminum, I think. Great weekend project for those looking for an excuse to exercise their milling machine... but again, not worthwhile unless you want to try a design change.
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Old 06-14-2007, 02:09 PM   #10
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While the balls could be readily reproduced (and are not worth doing), the actual hinge halves would take much more effort. Despite that, I did read about someone who was doing it - machining them from solid aluminum, I think. Great weekend project for those looking for an excuse to exercise their milling machine... but again, not worthwhile unless you want to try a design change.
The hinge holes were worn by the ss pin/bolts in my Scamp. I was able to drill them out and found a ss tube that fit the new holes in all 4 hinge places. Tight fit in the aluminium and good slip in the the new bushing.
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Old 06-14-2007, 02:24 PM   #11
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The hinge holes were worn by the ss pin/bolts in my Scamp. I was able to drill them out and found a ss tube that fit the new holes in all 4 hinge places. Tight fit in the aluminium and good slip in the the new bushing.
If we are talking about the holes through which the bolts are installed, and not the hemispherical sockets containing the balls, they are supposed to be larger than the bolts.

As I understand this design, the bolts are not hinge pins, and should not fit snugly. All of the weight is supported through the balls, the door is located by the balls (which I suppose we should really call "spherical bushings"), and the bolts & springs just keep the whole mess from bouncing apart on bumps. The free play between the bolt and hinge sockets allows body flex to change the hinge angles without causing binding; the springs keep tension on the bolt to keep the bushing ball in contact with both hinge halves without the nut being tightened directly against any hinge part and restricting this intentional flexibility.

If you take the bolts (and springs) entirely out of these hinges, the door is still fully supported and works normally; that's how the door is removed - pull both bolts, then just lift off. I wouldn't suggest towing without the bolts...

Knowing that the bolt clearance is normal might save someone an unnecessary hinge replacement, when all they need is the bushing balls.
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Old 06-16-2007, 04:29 PM   #12
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Gentlemen,

Are Scamp hinges unique in design or are they similar in concept and form to other standard hinges?

I have not paid close attention to Scamp ones.
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Old 06-16-2007, 08:56 PM   #13
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Are Scamp hinges unique in design or are they similar in concept and form to other standard hinges?
The Boler and Scamp hinges are apparently identical, other than the mounting flange details. Other than therse two, I have never seen a closely similar design... which doesn't mean there isn't one, of course.
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Old 06-16-2007, 10:11 PM   #14
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Trailer: 74 13 ft Boler and 79 17 ft Boler
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Howdy Gina, apparently the design of the Scamp and Boler hinges allows the door to open and close by allowing the hinge to change the axis of the hinge pin as it swings.....it seems that this is done because of the body shape of the trailers....if the manufacturers had incorporated flat verticle mounting pads for the hinges onto the trailer body, then a standard butt type hinge could be used as the door would swing on that type of hinge like a domestic house door ......when the door of the Boler and Scamp swings, you can see the hinge pin change it`s angle from the verticle plumb position....hope I`ve described this so it makes some sense, LOL .. ..Benny
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