[TR] TR4A trailing arms

Anthony Rhodes spamiam at comcast.net
Thu Oct 4 09:01:36 MDT 2018

Yes you are right.  But these studs have already been helicoiled and I think the original stud circle was not well done at the factory and they are not perfectly centered so some have negligible wall remaining around some of the circumference of the helicoil.  

I may be able to get the holes all welded up, but maybe not.  And then re-drilling MIGHT be a problem because the original aluminum is the softest alloy I have ever seen.  When drilling for new studs, the drill might try to cut eccentrically into the softer aluminum rather than into the weld.  

So I thought that starting with fresh trailing arms might be best.  


Sent from my 1837 Babbage Analytical Engine

> On Oct 4, 2018, at 10:22 AM, Chris Simo <ccsimonsen at gmail.com> wrote:
> it's pretty easy to go one size larger. or helicoil....
> Sent from my TRASH-80
>> On Thu, Oct 4, 2018, 9:35 AM Anthony Rhodes <spamiam at comcast.net> wrote:
>> I am looking to buy a pair of trailing arms for a TR4A.  My studs are in bad shape and I am looking for replacement arms with decent studs.  I will likely fit the Goodparts axles with 3/8" studs so the studs themselves currently in the replacement arms are not critical.  The aluminum of the trailing arms does need to be in good shape.  
>> Does anyone know of some trailing arms that I can buy!
>> -Tony
>> Sent from my 1837 Babbage Analytical Engine
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