Anyone use these trailing arms?

[Jim85IROC]

The JEC aluminum arms would have been my first choice for my Yeti too, but between them being out of stock, and JEC taking a while to ship my stainless arms, I decided to give these MFRs a try. If they don't work out I'll keep an eye open for the JEC aluminums to be restocked.

[Jim85IROC]

Today I got the Revo rod ends installed in both sets of arms. The MFRs are exactly the same length as the original links, but the JECs are about 1/8" longer. Has anybody else run into that with the JECs?

[Jboucher]

My JEC set arrived today. 4 days of transit is almost unbelivable for Canada.

I am absolutly stunned by the shipping and the quality of the parts!

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[durok]

Originally Posted by Jim85IROC

Today I got the Revo rod ends installed in both sets of arms. The MFRs are exactly the same length as the original links, but the JECs are about 1/8" longer. Has anybody else run into that with the JECs?

Are the Revo rod-ends you used all the way bottomed out into the arms?

I'm not the best person to comment on the lengths, because I didn't measure mine - remember, I am using the lower front JEC links as upper rears - because I didn't get shipped rear uppers, but two sets of front uppers.

When I bolted everything together I had some issues with the pinion angle being pointed down somewhat in the rear, so I swapped out Revo rod-ends for Jato rod ends in 6 places: both ends of the links I was using as upper rears, and the front ends of the rear trailing arms.

That finally brought everything to the right geometry!

I will say that at full-droop of the suspension, my wheelbase is 14.75"... EXACTLY what Axial claims as the stock wheelbase.

[Jboucher]

I think my set is wrong too.
The long straight links don't seem to fit anywhere...

Can you guys help me figure out which are the front and rear uppers and lowers?

This is supposed to be a wraith lenght rear kit

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[Jim85IROC]

I talked to one of the guys at JEC. They recommend putting the set screw into the trailing arm and screwing the end link into that. I put the set screw into the link to ensure that it was fully buried into the plastic. I prefer it that way because the more set screw there is in the plastic, the stronger it is, but I'll try it their way. If that doesn't work I'll shave the rod ends down a tad.

[Brake Weight]

Originally Posted by Jboucher

I think my set is wrong too.
The long straight links don't seem to fit anywhere...

Can you guys help me figure out which are the front and rear uppers and lowers?

This is supposed to be a wraith lenght rear kit

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If you’ve got the hardware to dress out all those links and compare them to the stockers side by side it may help. But those straight links make no sense to me as there isn’t any stock.

[Jboucher]

My guess is the straight links are the front uppers and they forgot to put the bend in it before shipping...

I will put RPM rod ends on them but the stock links are installed so might take a while.

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[durok]

I got all bent links, myself - which I believe was in error...

My understanding is that the straight links are the rear uppers, see this pic from their FB page (the title of the pic is "Jec Racing 7075 bomber ta's installed."):

[durok]

I ended up having to use the thicker (with the frenched rod-ends) bent links as rear uppers, because all of my links were bent.

However, my understanding is that those thick, bent links are actually to be used as front lowers.

As I said, I could only make my setup work by adding Jato rod-ends and using the parts "incorrectly".

When I reached out to JEC about it, they said that the error was theirs.

THIS is what a full set of JEC Racing links and other items for the Bomber looks like:



And this is what I got for links and trailing arms:

[Jboucher]

So my kit is correct?
Unless the straight links are too long, he might have sent the bomber lenght instead of wraith lenght.

I guess i will find out while installing.

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[Brake Weight]

I can see those straight links working for the rear uppers. Another good rod end is the RPM ones. They use the Traxxas balls but are beefier and stronger.

[durok]

Here's what my JEC Racing standard Bomber length trailing arms are built up as, but using the wrong links, and Jato rod-ends to correct the length issues - once again, the links are located and positioned so that they give full suspension travel with zero binding or interference with the driveshafts:

[Jboucher]

So the rear uppers with drilled holes should be the front lowers with straight links in the back?

The stock bomber links are all bent i think.

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[durok]

Originally Posted by Jboucher

So the rear uppers with drilled holes should be the front lowers with straight links in the back?

The stock bomber links are all bent i think.

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Exactly!

...and yes, my stock kit Bomber links are all bent.

[durok]

Originally Posted by Brake Weight

I can see those straight links working for the rear uppers. Another good rod end is the RPM ones. They use the Traxxas balls but are beefier and stronger.

I have been planning on buying a full set of RPM replacement rod-ends for a while, but I wanted to wait until I knew what lengths I needed, and also until I got a replacement job...

Which I have, I start Wednesday.

So, I will gradually be building my second Bomber-based rig soon!

I remember RPM plastics being indestructible from my Traxxas/Associated/Losi stadium truck days... and they make Revo AND Jato length replacements.

However, I will NOT be taking advantage of their cutesy colored versions:

Introducing Our Newest Color Option… Pink! | RPM R/C Products

[Jboucher]

Talked to JEC this morning, he made a mistake on the rear uppers, they are bomber lenght.

He's sending a new pair free of charge which is great since Canada shipping is pricey.

Really glad to support local guys for the customer service!

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[Jim85IROC]

This afternoon I followed JEC's advice and put the set screws into the arms and then screwed the end links in. Well what do you know, they went in deeper and now the arms are the right length. I did discover that the valley that the shock fits into is narrower than stock, so I had to grind the shock balls down a bit. I got one side in but discovered that the shock on the 2nd side is leaking, so I'll rebuild that shocks before I finish up that side.

[durok]

Awesome - that's the way I assembled mine, as well.

I'm using GMade XD Diaphragm shocks, so I didn't have the issue of the shock balls...

[Jim85IROC]

Originally Posted by durok

Awesome - that's the way I assembled mine, as well.

I'm using GMade XD Diaphragm shocks, so I didn't have the issue of the shock balls...

Usually I bury the set screws into the plastic ends then screw that into the metal rod. This ensures that as much metal as possible is in the plastic ends, which makes them stronger. In this particular case I guess it causes the rod ends to swell enough that they don't end up seating fully into the stainless link. Either way, these Revo ends aren't fragile like the Axial ends, so it's probably a lot less of an issue here.


Links are installed and I like them. They're heavy as hell, so now I'm going to need to put some weight on the front axle.


When I actually get around to building my Yeti I'll give those MFRs a review.