axle help - Page 3 - Fiberglass RV


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Old 10-28-2018, 11:27 AM   #29
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Name: Andrew
Trailer: Trillium
California
Posts: 3
Hi All,

So our new axle is installed and the clearance issue is solved! We went with a #9 Dexter with a 22.5 deg down angle and electric brakes. Unfortunately, the brakes on the new axle do not seem to be functioning properly ! I drove away from the shop and noticed right away that the brakes were much less powerful than on the old axle so I pulled over and did some testing.

I have a tekonsha prodigy RF brake controller and turned the power up to full blast. When I engage the manual function, the controller says I am delivering 12 volts to the brakes, but the braking function is barely noticeable (if I release the brake on my car, it will start idling away). I do feel something, but not much. It seems to me that even the smaller brakes should at least stop my car from idling at full power!

I called the shop before I got too far away and they talked about breaking in the brakes and the fact that the new axle brakes are 7 in (where my old ones were 10 in). So I drove home about 50 mi with lots of hills and braking...both trailer brakes were hot when I got home but no improvement in braking during the trip.

Some subsequent research pointed to adjusting the breaks (using a screw driver to adjust a nut on the inside of the wheel). I did this, but no improvement. Any advice for next steps?

Thanks!
-Andrew
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Old 10-28-2018, 12:20 PM   #30
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Name: Floyd
Trailer: 2004 13 ft Scamp Custom Deluxe
IllAnnoy
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7" brakes are simply not a strong or effective as 10".
Still they are adequate for a 13' fiberglass trailer.
They were developed for use on such things as snowmobile trailers which use 8" wheels.
If you expect them to be as aggressive as 10" you will be disappointed.
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Old 10-28-2018, 12:57 PM   #31
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Name: John
Trailer: 2015 Oliver 23, Ram Cummins
Smith Valley, Nevada
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7" brakes can never do what 10" brakes can, but new brakes do wear in and become much stronger. It seems like it will take a long time, but I suggest giving them some miles to prove themselves. For instance, my 10" brakes would not skid when new and after a few thousand miles they would skid at about 1/2 on the controller.
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Old 10-29-2018, 07:52 PM   #32
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Name: Steve
Trailer: Scamp 13
California
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Talk to the shop about swapping your old brakes on to your new axle. 10 inch drums will have 50 % more braking power than the 7 in drums. When you compare that to a 1500lb trailer that is a whole lotta force.
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Old 10-29-2018, 10:19 PM   #33
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Name: Floyd
Trailer: 2004 13 ft Scamp Custom Deluxe
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Quote:
Originally Posted by stevebaz View Post
Talk to the shop about swapping your old brakes on to your new axle. 10 inch drums will have 50 % more braking power than the 7 in drums. When you compare that to a 1500lb trailer that is a whole lotta force.
Won't fit.
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Old 12-03-2018, 11:44 AM   #34
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Name: Jorge
Trailer: Trillium
Ontario
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Hi, I am about to buy an axle for my 1974 Trillium, I was wondering how much clearance you have w/ the 22 degree axle and what size are your tires? Are you happy with it?
My 13" came w/ 14" tires and they are a higher profile.
Thanks.
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