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Rennkafer
 Post subject: Re: GBS Zero Build
PostPosted: May 24, 2021, 3:39 pm 
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Joined: January 28, 2021, 3:32 pm
Posts: 159
Location: Port Orchard, WA
RoyzMG wrote:
I'm a little confused. Is that really a Miata rear differential. I'm used to seeing the large "bat wing" ears at the top of the differential.

Roy


From his pics it looks like they cut off the outer part of the wings and bolted through the upper part of the center section.

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Fossil
 Post subject: Re: GBS Zero Build
PostPosted: May 24, 2021, 5:13 pm 
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Joined: December 3, 2019, 11:40 pm
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Rennkafer wrote:
RoyzMG wrote:
I'm a little confused. Is that really a Miata rear differential. I'm used to seeing the large "bat wing" ears at the top of the differential.

Roy


From his pics it looks like they cut off the outer part of the wings and bolted through the upper part of the center section.


You are correct, this allows GBS to use the same Chassis Jig for both the Ford based model and Miata, all they have to do is change up the mounts. the aluminum on the Miata Diff is fairly easy to cut, took a hole 10 min to do, if that.


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Lonnie-S
 Post subject: Re: GBS Zero Build
PostPosted: May 25, 2021, 10:30 am 
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Joined: October 24, 2008, 2:13 pm
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Location: Carlsbad, California, USA
Great photos. I'm very impressed with the quality of the chassis/suspension setup and components.

Cheers,

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Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886
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flyguyeddy
 Post subject: Re: GBS Zero Build
PostPosted: February 27, 2022, 6:05 pm 
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Joined: January 18, 2011, 1:23 pm
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Looks like gbs offsets the miata differential to center up the pinion flange in the trans tunnel. I was not aware that this would be ok with the miata tri-pot. Good to know.
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skippymcware
 Post subject: Re: GBS Zero Build
PostPosted: June 4, 2023, 11:12 pm 
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Joined: May 29, 2023, 11:18 pm
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I know I'm a bit late to the party, but am currently hunting around for examples of builds of the GBS Zero Mazda and MK Sportscars Indy RX-5. Any updates on the build? Did you ever consider the Indy RX-5? Lastly, it looks like there is no build manual for the GBS Zero Mazda. Is that true?

Thanks!
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GTIspirit
 Post subject: Re: GBS Zero Build
PostPosted: November 28, 2023, 8:27 pm 
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Joined: November 26, 2023, 6:37 pm
Posts: 9
Location: Southeast Michigan
Fossil wrote:
Rennkafer wrote:

From his pics it looks like they cut off the outer part of the wings and bolted through the upper part of the center section.


You are correct, this allows GBS to use the same Chassis Jig for both the Ford based model and Miata, all they have to do is change up the mounts. the aluminum on the Miata Diff is fairly easy to cut, took a hole 10 min to do, if that.


Interesting. Wonder if an NC diff would also bolt up? But then how to get driveshafts from NC diff to NB hub/upright?

Feedback from GBS is no, an NC diff doesn’t fit. Something about an awkward shape. That’s why they stick with NB and Sierra diff options.
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