axle choice 13Ft Trillium - Page 2 - Fiberglass RV


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Old 12-20-2013, 09:27 PM   #15
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I like your thinking and it is true that you can replace the spindle but ... the 10" brakes will not fit on the 2000 lb spindle .
Can someone 'splain to this admittedly tech-deficient reader just why 10" brakes would be more suitable than 7" brakes on this 13 ft. Trillium?
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Old 12-20-2013, 10:01 PM   #16
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Craig you are exactly right, a 3500 lb axle on a 13' would be WAY too stiff. Dexter actually list their axles at a variety of capacities, I use a 2200 lb on mine and although it matches the loaded weight of my 13' Boler of 1880 total and axle weight of 1600 lbs, the ride is still extremely rough.
I could not imagine a 3500 lb ride.
Dexter will custom make a lower capacity axle using the 3500# hardware only with shorter rubber.
You could then get the tapered spindle and 10" brakes on a custom made (say2500#) axle with any start angle desired.
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Old 12-20-2013, 10:12 PM   #17
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Can someone 'splain to this admittedly tech-deficient reader just why 10" brakes would be more suitable than 7" brakes on this 13 ft. Trillium?
10" brakes stop the trailer. 7" brakes slow the trailer and pretend to stop it.
7" brakes on a Scamp 13 give a nice comfy assist, but will not lock up when applied separately even at 10mph.
If I ever change my axle, it will get larger brakes.
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Old 12-21-2013, 01:52 AM   #18
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10" brakes stop the trailer. 7" brakes slow the trailer and pretend to stop it.
7" brakes on a Scamp 13 give a nice comfy assist, but will not lock up when applied separately even at 10mph.
If I ever change my axle, it will get larger brakes.
Anybody know what size came stock on the first-gen Trillium 4500? I ask because mine have no problem locking up when called for-?
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Old 12-21-2013, 06:44 AM   #19
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Quote:
Originally Posted by Francesca Knowles View Post
Can someone 'splain to this admittedly tech-deficient reader just why 10" brakes would be more suitable than 7" brakes on this 13 ft. Trillium?
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Originally Posted by floyd View Post
10" brakes stop the trailer. 7" brakes slow the trailer and pretend to stop it.
7" brakes on a Scamp 13 give a nice comfy assist, but will not lock up when applied separately even at 10mph.
If I ever change my axle, it will get larger brakes.
Larger brakes are able to stop more weight. The basic principle of brakes is they convert motion energy (trailer wheel moving) into kinetic energy (or heat) (think back to high school physics and the laws of physics). Larger brakes have 2 factors that increase braking; 1) the larger brake drum and brake shoes result in a larger friction area or contact area between the inner surface of the drum and the friction lining on the brake shoe; and 2) the larger diameter drum is able to exert move leverage on the rotating wheel.

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Originally Posted by Francesca Knowles View Post
Anybody know what size came stock on the first-gen Trillium 4500? I ask because mine have no problem locking up when called for-?
3500 lb axles usually come with 10" brakes
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Old 12-21-2013, 10:09 AM   #20
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I think that this is the route that I will take, I like the idea of 10" brakes, I am building this frame to take me to the dirt nap as they say and do not want to have to redo it again.

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Dexter will custom make a lower capacity axle using the 3500# hardware only with shorter rubber.
You could then get the tapered spindle and 10" brakes on a custom made (say2500#) axle with any start angle desired.
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Old 12-21-2013, 10:28 AM   #21
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Larger brakes are able to stop more weight. The basic principle of brakes is they convert motion energy (trailer wheel moving) into kinetic energy (or heat) (think back to high school physics and the laws of physics). Larger brakes have 2 factors that increase braking; 1) the larger brake drum and brake shoes result in a larger friction area or contact area between the inner surface of the drum and the friction lining on the brake shoe; and 2) the larger diameter drum is able to exert move leverage on the rotating wheel.


3500 lb axles usually come with 10" brakes
Kinetic energy is motion energy... which is converted (through friction in this case) to heat, which is produced when the brakes are applied.
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Old 12-21-2013, 11:03 AM   #22
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oops, Thanks for the correction Floyd. High Schools was a looong time ago
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Old 12-21-2013, 12:17 PM   #23
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Keep in mind the manufacturers recommended start angles:
Dexter = 10 down
Flexride = 24 down.

Both provide charts so you can determine your ride height for the spindle center. You have to factor in your tire size to get your final ride height.
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Old 12-21-2013, 12:24 PM   #24
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3500 lb axles usually come with 10" brakes
Didn't realize there're stock brakes per axle size, or I guess I could have answered my own question!

OEM axle on the first-gen 4500 is/was a "Rub-R-Ride" 2200 pounder. I guess that would be equivalent to the present Dexter #9, which comes with 7" brakes.

We did a whole-wheel replacement some time ago due to grease-caused contamination-destruction of the brakes. As I recall we just replaced in-kind. All this by way of saying that I'm pretty sure they must be 7" and they lock up just fine when called for.

Only problem I've ever had stopping was during a panic stop one time when a stop sign appeared out of nowhere .

Goin' thirty miles an hour and stomped on the brakes- they locked up, all right, but momentum carried 'er far enough that I wore bald spots on both tires.

Car tires saved by that newfangled ABS thing, I guess....
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Old 12-21-2013, 03:05 PM   #25
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Only problem I've ever had stopping was during a panic stop one time when a stop sign appeared out of nowhere .

Goin' thirty miles an hour and stomped on the brakes- they locked up, all right, but momentum carried 'er far enough that I wore bald spots on both tires.

Car tires saved by that newfangled ABS thing, I guess....
? how far did you skid?

Does not sound logical for a 30MPH sudden stop unless your brakes have been locking the tires up in the same place repeatedly.
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Old 12-21-2013, 03:45 PM   #26
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? how far did you skid?

Does not sound logical for a 30MPH sudden stop unless your brakes have been locking the tires up in the same place repeatedly.
Well...I might have been going a little faster- but since I post here in my real name I'm stickin' with the "30 mph" story...

Definite skid marks on the road... maybe thirty-forty feet long? The car didn't lock up, so marks had to be from trailer. Per actual distance: I didn't look real close since hanging around waiting for Barney Fife to show up and ticket me for running the stop sign seemed like a bad idea!

I didn't even examine the tires until later- calling the wear "bald spots" is probably a stretch. There was still plenty of tread left, but I could see matching wear spots when I checked 'em out later on.
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Old 12-22-2013, 10:01 AM   #27
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I tried to help a friend set up their brakes on a 13' trailer after replacing the brake pads last year. I also noticed a big difference of feel of the smaller brake size vs what I am use to on my 16' trailer with bigger brakes. I know that had I crank up my controller to the same level (to max) and had the boost on as we had on the 13' trailer that on my 16' had I simple pulled the lever on my controller & not touched the tug brakes I would have felt the trailer seriously trying to stop/jerk back the tug & the trailer would have been hopping like a bunny rabbit..... that didnt happen with the 13' trailer and its smaller brakes - yes I felt the brakes came on it but it was a much gentler feel in the tug - I didnt get the very distinct feeling that the trailer brakes were trying/could stop the tug all on their own as it feels with the larger brakes and the controller is set to high.
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Old 12-22-2013, 10:15 AM   #28
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This is true Carol, but new brake shoes will take a while to break in, that is wear to the point where they make 100% contact with the brake drum. Think of it as the brake drum is a set diameter, the brake shoes are another diameter, although they will be close new shoes will either just contact at the leading and trailing edge of the shoe or just the center point until they wear and match.

On the 7" brakes on my Boler I can lock up the wheels, but the 10" brakes on my Casita definitely have more stopping power.
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