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Potential Option for Short Nose Diff Mount


NewZed

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Found an interesting short nose diff mount on a car for sale on eBay.  Someone on classiczcar started a thread about the car.  Notice the custom mount for the nose, using the AZC control arm tube as the mounting point.  Since the tube spins, the mount can't control fore and aft movement but it does support up and down.  Stole a picture, the link is attached too.  It could probably be made stronger by connecting both sides of the two mounts, making it one crossmember that hangs from the control arm "system" tubes.

 

Forgot to say, this concept should work for the stock control arms also.  I don't know if those are AZC parts or the car designers.  The designer is Kindig It Design.  Never heard of them until now - http://www.kindigit.com/ 

 

http://www.ebay.com/itm/Professionally-restored-1972-Datsun-240-Z-Resto-Mod-/161386307368?afsrc=1

post-8864-0-46908600-1407359439_thumb.png

Edited by NewZed
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I also came across that Ebay listing and that set up looks like a doable solution , pretty sure that the gurus on the site will come with a system to be use with the stock tubes.  I am a buyer . :2thumbs:  BTW that Z is a gem at a big price tag .

Edited by PLATA
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Found an interesting short nose diff mount on a car for sale on eBay.  Someone on classiczcar started a thread about the car.  Notice the custom mount for the nose, using the AZC control arm tube as the mounting point.  Since the tube spins, the mount can't control fore and aft movement but it does support up and down.  Stole a picture, the link is attached too.  It could probably be made stronger by connecting both sides of the two mounts, making it one crossmember that hangs from the control arm "system" tubes.

 

Forgot to say, this concept should work for the stock control arms also.  I don't know if those are AZC parts or the car designers.  The designer is Kindig It Design.  Never heard of them until now - http://www.kindigit.com/ 

 

http://www.ebay.com/itm/Professionally-restored-1972-Datsun-240-Z-Resto-Mod-/161386307368?afsrc=1

The pivot points for the rear arms are at a different spot with heims.  The tube stays stationary.  Really cool hanger. I like it.

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Actually, if you look at various pictures around the internet you'll see that big tube pivots also.  Plus, AZC has what looks like Delrin bushings at the ends of the big tube.  I thought the same thing and wondered about the effect of creating a shorter transverse link.  But after looking around, decided that it's meant to pivot.  Maybe it's not.  If so, I don't know what the plastic end pieces are for.

 

I started another thread about the AZC arms and how they work - http://forums.hybridz.org/topic/119147-arizona-zcar-rear-suspension-design-function-flaw/?do=findComment&comment=1116443

 

But, if one wanted to, they could lock the big tube down, use the heim joints as the sole pivot, and the big tube could be welded or bolted to.  You'd have the shorter control arm though, if that matters.

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You really want a mount over the top as the diff tries to move up under acceleration.  You could still do something similar but it would be better if one piece that connected to those tubes by dropping down.  It probably could be fairly simple with poly bushes around the tube.  You need to be careful that you don't make one end or the other solid when mounting the diff.  

 

Cary

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The tube isn't supposed to spin, but if you lift up on those mounts with a couple thousand lbs of force, I bet they would, really tight bushings or no! LOL

 

That whole idea is a non starter for a stock arm since they're supposed to spin. I wouldn't mount the diff that way with the AZC arms either. That diff mount takes A LOT of abuse, and I wouldn't want to pull on the part that locates the control arms that hard. Seems like it's just asking for (big) trouble.

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It's interesting to think about.  I wouldn't call it a non-starter.  With a lubricated bushing at the contact point of the mount and the control arm tube, the arm could probably pivot fine,  But, with the stock rubber bushings deflecting side-to-side, the diff alignment would be off as you cornered.  Using urethane bushings to stiffen things up, a lubricated metal bushing at the attachment points, and you're left with "can the tubes handle the load without bending?".   Just a thought experiment, building on the AZC design.  Application would matter.  Drag-racing not a good idea, street car maybe fine.

 

Apparently rags is using the AZC version, modified, post #17  - http://forums.hybridz.org/topic/119147-arizona-zcar-rear-suspension-design-function-flaw/  

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Seems like it could be a nice simple easy to make option.  Who knows.

 

 

On the Kindig It people - I see a reality car show in the future: http://www.kindigit.com/about-us.php

 

They already got two LDS-Themed Reality Shows out there...I guess the world is big enough for one more. I can watch in Asia on Discovery Turbo, AKA "DMAX" now...

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It's interesting to think about.  I wouldn't call it a non-starter.  With a lubricated bushing at the contact point of the mount and the control arm tube, the arm could probably pivot fine,  But, with the stock rubber bushings deflecting side-to-side, the diff alignment would be off as you cornered.  Using urethane bushings to stiffen things up, a lubricated metal bushing at the attachment points, and you're left with "can the tubes handle the load without bending?".   Just a thought experiment, building on the AZC design.  Application would matter.  Drag-racing not a good idea, street car maybe fine.

 

Apparently rags is using the AZC version, modified, post #17  - http://forums.hybridz.org/topic/119147-arizona-zcar-rear-suspension-design-function-flaw/

It is a non-starter to me. Even if it worked as planned it would still put a lot more stiction in the suspension, especially when you were on or off the gas. Just a bad idea IMO.

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