Axle Question for the Pros

[Classic Finn]

Since Im not experienced with this I was wandering if anyone of you pros can tell me as to what height the trailer frame would be using an axle that has a starting angle of -20 degrees as many of them are here. Also what might help is that Id be using a 14 x 7 inch rim and size 14 tires.

Here is a diagram:



and photo of axles available now:



Classic Finn

[Nitetimes]

You need to know the distance from the center of the spindle to the top of the mount plate, add that number to half the height of the tire....probably around 27"/2=13"+a is the height to the bottom of the frame.

[Classic Finn]

Thank You Rich

I have a straight axle on my present tear so this type of axle is a bit different for the height is it?

Classic Finn

[Rigsby]

Ive just worked it out , using a 14" rim with a 195/60/ 14 tyre to about 16" to the base of the frame
steve

[G-force]

Depending on the tire, 16" sounds like its in the ball park. Mine are 10 degrees down and with a typical ST205 tire on a 15" rim it around 14"

[Classic Finn]

Depending on the tire, 16" sounds like its in the ball park. Mine are 10 degrees down and with a typical ST205 tire on a 15" rim it around 14"

Thank You Everyone.

G force I have to admit this is the 1st time I have read that ones axle angle is -10 . Ive read of 0 and +20 . Is this common amongst the axles there in the good ol USA?

Here mainly all are at the -20 and a few -30.. Sure dont know as to why no real choices.

Classic Finn

[mechmagcn]

With a -10 axle and 215/75R15 tires, my ground clearance is 14"

[G-force]

Not sure if its a USA thing, but 0, 10, 22.5 and 45 degrees are common torsion axle angles with the major axle manufactures around here such as Dexter.

Depending on the tire, 16" sounds like its in the ball park. Mine are 10 degrees down and with a typical ST205 tire on a 15" rim it around 14"

Thank You Everyone.

G force I have to admit this is the 1st time I have read that ones axle angle is -10 . Ive read of 0 and +20 . Is this common amongst the axles there in the good ol USA?

Here mainly all are at the -20 and a few -30.. Sure dont know as to why no real choices.

Classic Finn

[aggie79]

I think part of the confusion has to be with how things are stated on this side of the pond. Dexter specifies their axles as "up" or "down" relative to the height of the spindle center to the rotation point of the torsion arm.

By your pictures and dimensions, what you refer to as a -20 is close to the 22.5 degree down of the Dexter. I think over here we would tend to call the 22.5 degree down a +22.5 rather than a -22.5.

I wanted a lower ride height than what seems to be the standard and ordered a 10 degree up angle. With a 205/75R15 tire, I am trying to get a loaded clearance of about 12 inches from the bottom of the frame to the ground.

Anyway, this link shows ride heigths for various start angles and wheel/tire combinations: http://dexteraxle.com/i/u/1080235/f/6-8K_cat_4-07/Torflex_information.pdf.

[Jiminsav]

Aggie is right, anything below the axle is positive angle, anything above the axle is negative axle.

[cuyeda]

What ever happened to the lead I set you up with for the two 1947 license plates?

[Arne]

If you have a straight axle, do you have it mounted on springs? Springs will lift the trailer higher than a torsion axle... I dropped the body about 4" by going to a torsion axle.

[doug hodder]

Heikki...another option....go with a 4" drop axle. It should/can bolt up to your springs...and check the axle stub in relation to the frame in this pic. Maybe an option if a lower look is what you are going for. Just an idea. Doug