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> NASA Nationals links and results!
CMC #37
post Sep 10 2009, 05:28 PM
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Post your links up here peeps!

Live Timing and Scoring

MyLaps Live Results This one is a little graphically neater.

Schedule


Saw the live timing this am, looks like many are taking it easy in CMC/CMC2, Dave Schotz came out blastin' though! (IMG:http://www.frrax.com/rrforum/style_emoticons/default/smile.gif)

Looks like an hp track from the comparative lap times so far.
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Unbalanced Engin...
post Sep 11 2009, 06:56 PM
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It looks like that was only a partial cure. I've spoken to Mitch and Alan and all three of us are a bit on the stumped side so any other ideas would be helpful.

These are the parts that have been changed and the mid corner chatter persisted. Primarily in the slower / tighter radius corners:

K member
Upper arms
Rack
Tie rods
wheels / tires


These parts have been checked and are in good shape:

Hubs
Lower ball joints
inner lower A arm bushings


Contact has been checked for contact:

swaybar - tie rods
Upper arms - shock towers
swayber - sub frame

Tire pressures are 26 cold, and ~33 hot. Temps are within 10 deg across the face [275 RA1]

Front shocks were refreshed in March. Shock/spring/bar combo has been in place for ~3 years.


Unknowns (to me):

UMI K members -- Are they stiff enough??
Front sub frame starting to crack -- Alan Blane's Idea
Try higher front tire pressures -- Mitch's Idea

Sooo Any thoughts? TIA,

Jason S

This post has been edited by Unbalanced Engineering: Sep 11 2009, 06:57 PM
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CMC #37   NASA Nationals links and results!   Sep 10 2009, 05:28 PM
firehawkclone   Its all about the infield! My car will not tu...   Sep 10 2009, 10:32 PM
mitchntx   John, this was posted over on the NASA forums QUO...   Sep 10 2009, 11:53 PM
firehawkclone   QUOTE (mitchntx @ Sep 10 2009, 04:53 PM) ...   Sep 11 2009, 12:45 AM
Unbalanced Engineering   I found the smoking gun. With the aero load, John...   Sep 11 2009, 12:56 AM
mitchntx   I knew you were having last minute issues with the...   Sep 11 2009, 12:58 AM
MikeP-99Z   Glad John/Jason found the issue - let's just s...   Sep 11 2009, 01:27 AM
CMC #37   Go John! A little birdie told me that T1 is f...   Sep 11 2009, 03:38 AM
trackbird   Rock N roll guys (and ladies)! Too bad you...   Sep 11 2009, 12:06 PM
CMC #37   Looking at the schedule the Championship race for ...   Sep 11 2009, 05:07 PM
Unbalanced Engineering   It looks like that was only a partial cure. I...   Sep 11 2009, 06:56 PM
trackbird   How much castor is in the car? If it's running...   Sep 11 2009, 07:07 PM
CMC #37   I'm with Alan, subframe cracked/bent good thin...   Sep 11 2009, 07:33 PM
Unbalanced Engineering   Hey Kevin, I knew I was forgetting something. Or...   Sep 12 2009, 01:07 AM
mitchntx   When tire pressures get that far out of whack, its...   Sep 12 2009, 01:44 AM
MikeP-99Z   Ride height, coil bind, shock travel etc. - going ...   Sep 12 2009, 02:06 AM
shortbus   QUOTE (MikeP-99Z @ Sep 11 2009, 10:0...   Sep 12 2009, 03:04 AM
shortbus   Are the front shocks shortened? How much suspensi...   Sep 12 2009, 03:07 AM
mitchntx   Its not spring rate ... Full travel 1000lb spring...   Sep 12 2009, 03:18 AM
trackbird   QUOTE (mitchntx @ Sep 11 2009, 11:18 PM) ...   Sep 12 2009, 04:35 AM
mitchntx   QUOTE (trackbird @ Sep 11 2009, 11:35 PM)...   Sep 12 2009, 11:46 AM
nape   QUOTE (mitchntx @ Sep 12 2009, 05:46 AM) ...   Sep 12 2009, 01:59 PM
nape   What do you mean by chatter? Come find me tomorrow...   Sep 12 2009, 03:58 AM
Unbalanced Engineering   Thanks for all the additional thoughts. The 21 i...   Sep 12 2009, 04:08 AM
1qwikbird   Here's a link to some pics http://www.chevyasy...   Sep 12 2009, 11:34 AM
Unbalanced Engineering   No front bump stops and after we swapped the GW ar...   Sep 12 2009, 03:57 PM
CMC #37   Speedcast TV username is: thunder valley racing P...   Sep 12 2009, 05:48 PM
mitchntx   Spec Pinata is rolling out now. CMC in an hour .....   Sep 12 2009, 08:20 PM
CMC #37   Unofficial results Dave Schotz wins CMC2 and Glenn...   Sep 12 2009, 10:13 PM
trackbird   QUOTE (CMC #37 @ Sep 12 2009, 06:13 PM) U...   Sep 13 2009, 01:07 AM
mitchntx   Brown's car looked like a rear wheel seal, not...   Sep 12 2009, 10:19 PM
Unbalanced Engineering   Congrats to everyone   Sep 13 2009, 01:13 AM
QUASAR   Does anyone know what happened to Tommy? Looked l...   Sep 13 2009, 10:35 PM
mitchntx   During practice, he hopped a curb and did somethin...   Sep 13 2009, 11:15 PM
QUASAR   QUOTE (mitchntx @ Sep 13 2009, 07:15 PM) ...   Sep 14 2009, 10:31 PM
CMC #37   Watched the AI/AIX race today, congrats to John Wh...   Sep 14 2009, 12:43 AM

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