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Xidas, bumpstops, and a suspension cam

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Old 07-18-2017, 04:16 PM
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Default Xidas, bumpstops, and a suspension cam

Cool vid of a camera pointed at a Xida in an Exocet.

https://www.youtube.com/watch?v=zfso8iDwego#t=1m42s (right hand sweeper starting at 1:42... cam is on rear left)

Doesn't look like it touches the bumpstop on full cornering unless it hits a bump.

If one follows Emilio's recipe for a streetable track car - Xidas, front bar, 6ULs, and say, 225mm super200 tires - do they touch the bumpstops at full cornering only when hitting bumps?
Anyone done a suspension cam vid on a miata?
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Old 07-18-2017, 06:33 PM
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Originally Posted by JasonC SBB
If one follows Emilio's recipe for a streetable track car - Xidas, front bar, 6ULs, and say, 225mm super200 tires - do they touch the bumpstops at full cornering only when hitting bumps?
"Uh huh."
or
"Sometimes"

Depends on ride height, surface grip, tire condition, chassis setup/alignment, spring rate, bar setting...

As Emilio said elsewhere, that question is way too simple. There are a million variables.
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Old 07-19-2017, 04:18 PM
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That goes without saying.

That's why I bounded the problem by saying "following the 949 recipe, with super200 tires"...

I found this
Konis, no bumpstops (!), 11.5" rear ride height (3.5" pinch weld rear), 375 lb/in rears, 225 RS3 tires.
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Old 07-24-2017, 05:20 PM
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Originally Posted by JasonC SBB
That goes without saying.

That's why I bounded the problem by saying "following the 949 recipe, with super200 tires"...

I found this

Konis, no bumpstops (!), 11.5" rear ride height (3.5" pinch weld rear), 375 lb/in rears, 225 RS3 tires.
Shocks too long, ride height too low (wayyy to low), springs too soft. Nowhere near our recipe.

What is it you are actually trying to conclude Jason? I mean, what is the project you are working on that requires the data?
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Old 07-27-2017, 01:02 AM
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Originally Posted by JasonC SBB
Cool vid of a camera pointed at a Xida in an Exocet.

https://www.youtube.com/watch?v=zfso8iDwego#t=1m42s (right hand sweeper starting at 1:42... cam is on rear left)

Doesn't look like it touches the bumpstop on full cornering unless it hits a bump.

If one follows Emilio's recipe for a streetable track car - Xidas, front bar, 6ULs, and say, 225mm super200 tires - do they touch the bumpstops at full cornering only when hitting bumps?
Anyone done a suspension cam vid on a miata?
That car doesnt make enough power or have enough tire to use the suspension. Doesn't mean there's something wrong with the shocks. Can't expect the right rate for a 10" hoosier to work on a 205 street tire., etc
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