carli radius arms

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Jan 5, 2020 | 06:31 PM

FDNYL136

Thread Starter

Mountain Pass

Joined: Oct 2017

Posts: 225

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From: NY

carli radius arms

I have a 2019 f350 and I am installing the carli 2.5 front springs . I am thinking of putting carli radius arms on instead of the caster bushings . on my previous alumiduty I used icon 2.5 springs and and caster bushings . Just looking for input on the springs with radius arms to correct the caster

Jan 5, 2020 | 06:46 PM

Section179

Fleet Mechanic

Joined: Apr 2018

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IMO radius arms are the best way to correct caster- twist the whole axle.

i went with PMF to have the adjustability. You should consider both PMF and Lewis Built as alternatives to the Carli’s.

Jan 5, 2020 | 08:02 PM

willynilly

Cargo Master

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i couldnt see dropping cash on new arms unless they were adjustable

Jan 7, 2020 | 09:35 AM

tothe birds-a

Freshman User

Joined: Nov 2019

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So does using after market Radius Arms reduce or eliminate the amount of "bow" in the coil springs ? Installed the Carli Back Country system from CJC Offroad and did not go with the new Radius Arms just the caster shims that came with kit. Upon installation, the front coil springs (Carli Progressive 2.5" suspension lift) have a slight bow to them. Mechanic called CJC and we also sent pictures of positioning and mounting and CJC said it looked fine and was installed correctly. Would think that using New Radius Arms that this would eliminate the slight bow do to actually allowing rotation of axel since you replace the caster shims back to the original stock shims because your axel has been allowed to rotate ?

Jan 7, 2020 | 07:56 PM

projectnitemare

Laughing Gas

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You have to be careful using adjustable radius arms or 4 links to correct caster angle. While it will correct the alignment, it is doing so at the cost of driveshaft angles. You are turning the pinion down and if done enough it will potentially cause vibration. Not a big deal if you don't lock the hubs or use 4 wheel drive and likely won't be much issue for the little bit of lift you are adding. I personally try to use the bushings first and when more is needed adjust elsewhere. In extreme cases, the correct fix is the cut the welds and turn the inners C's on the axle. In your case, 2.5 inches of lift changes the caster angle about 2 degrees. Using adjustable arms would change the pinion angle about the same amount, not enough to likely cause any issue. You'll be fine, just don't get carried away

Jan 7, 2020 | 09:15 PM

FDNYL136

Thread Starter

Mountain Pass

Joined: Oct 2017

Posts: 225

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From: NY

Carli

I have been thinking about it because I really don’t like the way the ball joint sits in the new bushings

Jan 7, 2020 | 09:54 PM

willynilly

Cargo Master

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Quote:

Originally Posted by projectnitemare

with 2.5" lift, rotating the axle back to where it originally was shouldnt be any where close to causing trouble from a shaft angle perspective. now if we were talking 8" then ya the front driveshaft angle might be extreme and need some special attention.