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Author Topic: Ground clearance  (Read 3032 times)
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Esslinger Eng
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« on: August 20, 2016, 09:20:33 PM »

If I may ask, what sort of ground clearance is adequate on a suspended ~200-250mph lakester that will be raced at both El Mirage and Bonneville?
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Brian

*** The above information is my personal opinion and does not necessarily reflect the opinion of Esslinger Engineering, Inc. ***
Dynoroom
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« Reply #1 on: August 21, 2016, 01:34:34 PM »

It depends on how heavy you are, how much suspension travel you have, how firm or soft your chosen damper & spring rates are, & how good/bad the courses are.

We are ridged mounted in front & suspended in the rear (long wheel base helps).
We run about 2" to 2.5" at both El Mirage & Bonneville. Best speeds to date are 216 & 241 at said venues.


* Bonneville 2016 058 (Large).jpg (55.76 KB, 1024x768 - viewed 110 times.)
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Michael LeFevers
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Racing is just a series of "Problem Solving" events that allow you to spend money & make noise...
Rex Schimmer
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« Reply #2 on: August 21, 2016, 07:07:02 PM »

Is it flat bottom or round bottom? and as Mike said "Does it have suspension?"

Rex
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Rex

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Esslinger Eng
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« Reply #3 on: August 22, 2016, 03:18:31 PM »

I'm trying to steer away from a flat vs round bottom debate...  I was guessing somewhere between 2 & 3 inches of ground clearance would suffice at ride height with a mechanical limit of around 1/2" to 1" of clearance with both front and rear suspensions bottomed out and the tires loaded as usual.  Does that sound doable then?
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Brian

*** The above information is my personal opinion and does not necessarily reflect the opinion of Esslinger Engineering, Inc. ***
krusty
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« Reply #4 on: August 23, 2016, 03:51:38 PM »

Yes. Our "high car" (rear engine modified roadster) is a combination of flat and rounded and has approximately 2" of clearance on the bellypan, which is full length, but not the full width of the body. I run 1/2" to 3/4" of bump travel (mechanically limited) on double adjustable Ohlins dirt racing coilover shocks. We set records in B/GRMR and B/FRMR last week with mid 250 averages on the poor quality last mile and a half. Car has exit of 264 with C engine on better salt.   Edit: 3800 - 4100# (depends on engine E,D,C,B).

vic
« Last Edit: August 23, 2016, 03:56:33 PM by krusty » Logged
jimmy six
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« Reply #5 on: September 10, 2016, 10:18:28 PM »

Consider the problems if a flat tire occurs; by there look most don't. Just a thought.
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