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Old 05-15-2016, 06:49 AM   #1
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Axle Flip Math

Some on the RV.NET forum seem to think if my FW is 5" nose high and I raise the axles by 2" this will not leave me with 3" nose high. They say it will give me more than the 2" as far as leveling the trailer. Is there any truth to this? I have looked all over the internet and can't find anything about this. Does someone have a formula to use to find out?
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Old 05-15-2016, 07:05 AM   #2
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We looked into it when we got our 25RKS, and talked to an engineer... found out the following: It would void the Jayco warranty, it would void the axle and running gear extended warranties, the center of gravity would be raised, and make the TT dangerously unstable, and decrease the gas mileage (he said because it would be forcing more air under the TT, rather than over it).

All in all, not worth it.

Consult with an engineer... Oh, almost forgot, the insurance company said that they could no longer insure it as it would become a "structurally modified" unit, and it would have to be re-certified as safe.
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Old 05-15-2016, 07:26 AM   #3
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Double post. Sorry
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Old 05-15-2016, 07:27 AM   #4
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Thanks for the reply, but it doesn't answer my question.
I'm dropping the leaf springs to the lower hole. You can request this be done from the factory.

Will the 2" raise give me more than 2" of leveling?
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Old 05-15-2016, 07:44 AM   #5
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Think lever and fulcrum here... a 2" drop 20' away "should" amount to more at the kingpin
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Old 05-15-2016, 07:51 AM   #6
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Quote:
Originally Posted by Seann45 View Post
Think lever and fulcrum here... a 2" drop 20' away "should" amount to more at the kingpin
This. The longer the wheelbase the greater the effect. BTW, an axle flip is moving the axles from over to under the springs. Yours are already there.
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Old 05-15-2016, 08:35 AM   #7
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Quote:
Originally Posted by Krusegroup View Post
This. The longer the wheelbase the greater the effect. BTW, an axle flip is moving the axles from over to under the springs. Yours are already there.

I understand the axle flip thing. It was easier to type in the title. I was typing from a tablet and those things are brutal to type on.

Is there a formula I can use to find out how much it will affect? Can I expect around 2.5" or am I looking at double?
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Old 05-15-2016, 01:51 PM   #8
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This may help


Lever Mechanical Advantage Equation and Calculator - Case #1 | Engineers Edge | www.engineersedge.com
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Old 05-16-2016, 07:30 AM   #9
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If you're dropping to the lowest hole in the brackets, it's an easy job. On my last fiver, a 30.5 RLS, I experienced the same thing. When I had the dealer drop them to the lowest hole (I cited safe towing and they did it at no charge), it was still 1.5" nose high but towed so much better.
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Old 05-16-2016, 04:04 PM   #10
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Ours was only slightly nose high, but wanted more wheel skirt clearance so had the dealer do the deed when packing wheel bearings since wheels were going to be off. We are level now. The shop guy called this "jaking". The change to last bolt holes was 2 1/4" higher at axles. The hitch pin doesn't go up too.
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