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JBeetles Samba Member
Joined: June 29, 2024 Posts: 3 Location: NY
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Posted: Sat Jun 29, 2024 1:02 pm Post subject: IRS Trailing Arms |
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Does anyone know if someone makes a set of trailing arms that are wider but not longer? In other words, I cannot change the wheelbase of my project. I need to lessen the angle of the axles CVs because right now it is too extreme. Any help would be greatly appreciated! |
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electricolive Samba Member
Joined: April 20, 2013 Posts: 20 Location: Berwyn PA
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Posted: Mon Jul 01, 2024 4:54 am Post subject: Re: IRS Trailing Arms |
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Pretty sure a wider, but not longer, IRS trailing arm is not available. You could certainly modify an existing trailing arm to make it wider. Narrowing a stock trailing arm is pretty common if you google that so you can get an idea what would be involved in that fabrication. You could also get creative and cut the stock trailing arm pivots off the torsion bar housing and weld on new ones a few inches outboard. And you could use spring plates from a Thing to attach to the stock trailing arm further outboard. That would give you around 2.5" wider per side. You can make custom spring plates if you need more width. You will need to cut and extend the end of the torsion bar housing too to fit up the bushing and spring plate cover properly. Seems like a lot of work either way. How big are your angles? Maybe there is another solution. _________________ Check out the video of Olive here: https://www.youtube.com/watch?v=L54eqGnPGRI&ab_channel=MonolithMotors |
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NJ John Samba Member

Joined: September 21, 2007 Posts: 2873 Location: HdG, MD & NJ
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Posted: Wed Jul 03, 2024 5:08 pm Post subject: Re: IRS Trailing Arms |
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Is this for an extreme lower IRS car? I don’t understand what your trying to accomplish. _________________ 1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage |
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JBeetles Samba Member
Joined: June 29, 2024 Posts: 3 Location: NY
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Posted: Sat Jul 13, 2024 7:38 am Post subject: Re: IRS Trailing Arms |
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NJ John wrote: |
Is this for an extreme lower IRS car? I don’t understand what your trying to accomplish. |
It's a custom mid engine setup adapter from a stock irs chassis. The motor and trans are mounted about 4 inches higher than they would normally be, so the axles are maxed out connecting to the hubs. The idea is to move the hubs outward to lessen the angles. I am constrained by the body as far as wheelbase is concerned, but width can be played around aith. |
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Schepp Samba Member

Joined: March 22, 2020 Posts: 459 Location: NorCal
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Posted: Mon Jul 15, 2024 9:52 am Post subject: Re: IRS Trailing Arms |
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pics? |
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Jacks Samba Member
Joined: July 15, 2006 Posts: 2442 Location: San Clemente, Ca.
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Posted: Mon Jul 15, 2024 10:05 am Post subject: Re: IRS Trailing Arms |
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The off road guys have custom/modified cv joints that allow extreme angles _________________ Jack Staggs
Actual name |
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Schepp Samba Member

Joined: March 22, 2020 Posts: 459 Location: NorCal
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Posted: Mon Jul 15, 2024 11:21 am Post subject: Re: IRS Trailing Arms |
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https://www.kartek.com/parts-categories/cv-joint-assemblies.html
The other option you have it switching to a larger cv joint. I converted to 100mm Bus joints on my Baja bug because they have more travel before they start binding.
This requires different axles, flanges and stubs axles though.
The conversion I did:
100mm cv joints (Bus)
Type 181 "Thing" axle shafts.
Type 181 aka conversion stub axles.
Type 181 aka conversion transaxle output flanges
No custom parts. Stock trailing arms. Stock Beetle bearings and drums. |
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rayjay Samba Member
Joined: March 26, 2008 Posts: 1591 Location: Buford GA
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Posted: Sun Sep 15, 2024 4:58 am Post subject: Re: IRS Trailing Arms |
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Aren't some 944 arms wider? Plus the CVs are wider. I think, not an expert. |
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