Tower novice - Car badly affected - help please... - Page 4 - Fiberglass RV


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Old 06-27-2013, 12:14 AM   #43
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Frank, please reconsider you priorities on trailer brakes. They are one of the few tools you will have to contol trailer sway.
... and to stop the trailer.

If the axle does need replacement anyway, the extra cost of brakes at the tome of replacement is not so bad... and is much lower than adding them later.
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Old 06-27-2013, 12:22 AM   #44
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Glad to see your input on this thread Jessie. I'm especially interested in this thread because we've been debating adding a hitch to Carol Ann's next generation E320 wagon to tow our Trillium 4500. Charlie her Mechanic says they don't think twice about towing with that car across the big pond.

.
Just keep in mind that across the big pond they have in many countries a national max trailer towing speed..... even on the German Autobahn you cant do more than 80 km/h or 50 mph..... a little different over across the big pond as to what folks feel is a safe speed to tow at thus one of the reasons they are comfortable with running with a tongue weights below 10%.
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Old 06-27-2013, 12:29 AM   #45
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That is nice to know Carol. That must explain all the slow moving vehicle triangles we see in the pictures of trailers in Europe.
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Old 06-27-2013, 01:07 AM   #46
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Found a good picture:
Trillium Axle
and the original specs for a trillium 13 axle
Trillium Axle Rebuild...possible?
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Old 06-27-2013, 05:49 AM   #47
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For what it's worth the tongue weight on my Trillium 1300 was about 220 lbs. Also it came from the manufacturer with ST175/80R13 tires. Carlisle was the brand. Raz
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Old 06-27-2013, 08:42 AM   #48
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Found a good picture:
Trillium Axle
Yes, excellent

Franck, if you were to show us a photo of the axle end with wheel removed, like Don's first image, we could determine the start angle and whether or not it has sagged appreciably... assuming it is a Dexter Torflex or equivalent.
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Old 06-27-2013, 09:00 AM   #49
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For what it's worth the tongue weight on my Trillium 1300 was about 220 lbs.
Raz was that empty or loaded?
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Old 06-27-2013, 10:22 AM   #50
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Shall I assume that is a typo highlighted above and you meant a low TW?
Tanks for catching that, Roy... Yes, I meant for him not to drive too fast with a LOW tongue weight.
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Old 06-27-2013, 10:27 AM   #51
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The rear Suspension is Hydro pneumatic and self adjust according to load. No issue here, it works at it should.
Wikipedia has a piece on the hydro pneumatic suspension.
Hydropneumatic suspension - Wikipedia, the free encyclopedia

Which says: "Ride height correction (self levelling) is achieved by height corrector valves connected to the anti-roll bar, front and rear. When the car is too low, the height corrector valve opens to allow more fluid into the suspension cylinder (e.g., the car is loaded). When the car is too high (e.g. after unloading) fluid is returned to the system reservoir via low-pressure return lines. Height correctors act with some delay in order not to correct regular suspension movements."

This got me wondering if it might be possible that the given combination of factors might just be helping to swing the pendulum further. Much like the Tacoma Narrows Bridge many of us learned in high school. Or when we tow on the highways that are essentially a series of flat concrete slabs. Hit the right speed and the trailer really rocks the tow vehicle.

In keeping with Francks desire not to throw money at the problem, there might be some simple tests to try. What happens when he shifts the weight on his trailer? What effect does the the Trillium have on a different tow vehicle? How does his car respond towing a different trailer with the same tongue weight? etc.
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Old 06-27-2013, 10:47 AM   #52
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Raz was that empty or loaded?
Empty trailer with a full propane tank and battery on the tongue.
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Old 06-27-2013, 10:48 AM   #53
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Tires: The wheel well on the Trillium can accommodate P205/75R14
Axle: It sounds like the axle is failed in a way that I was not aware that they could fail, (too stiff? seized?). I am no axle expert. Is it possible that it has been replaced with a new axle? It might be a larger capacity then required, just like mine. When my trailer is empty, it bounces too.
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Old 06-27-2013, 10:54 AM   #54
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Empty trailer with a full propane tank and battery on the tongue.
That makes sense... nothing loaded behind the axle to bring the weight down/balance it out.
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Old 06-27-2013, 10:59 AM   #55
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Originally Posted by Roy in TO View Post
In keeping with Francks desire not to throw money at the problem, there might be some simple tests to try. What happens when he shifts the weight on his trailer? What effect does the the Trillium have on a different tow vehicle? How does his car respond towing a different trailer with the same tongue weight? etc.
Good point. If Franck has a friend with a hitch it might also be worth having them take the trailer out riding level for a test run behind their tug to see how it rides. May not be the trailer thats the issue.
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Old 06-27-2013, 11:06 AM   #56
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That makes sense... nothing loaded behind the axle to bring the weight down/balance it out.
X 2...Good point, Carol- full water tank especially, and an awful lot of storage is back there. .

The variability of tongue weight just over the course of one trip in trailers this small drives me crazy. Loadshifting is sort of routine for me as tanks shift etc...though removing my fourteen gallon water tank really brought the variability factor down for me.

I do think the presence of the add-on front stabilizers and extra jack on Franck's trailer adds twenty or more permanent pounds directly to the tongue.

Francesca
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