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Old 12-02-2003, 11:24 PM   #1
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Default Reading your tires?......

This past weekend I raced at the new local indoor track which is small (8 sec. laps) and tight. I was running on Sorex 24's with thin med-firm sorex inserts. Due to the 2 right hand sweepers I smoked a pair of tires. The tires on my left side overheated and "shreaded" quite badly.

Here's my set-up....

Losi XXX-S G+
Front
3rd hole out on the shock tower
40 wt. oil/ 56 piston
0 toe
-1 deg. chamber
4 deg. caster blocks
2 deg. kick-up
2nd hole out for camber link on the tower
arms middle

Rear
2nd hole out on the tower
40 wt. oil/ 56 piston
1/2 deg. standard off-set hubs
-1 deg. chamber
0 deg. anti-squat
2A chamber link (2nd hole on the tower inside hole on the hubs

Batts forward (3300GP's)
Trinity monster stock
Sorex 24's
Sorex med-firm inserts
Yokomo 12 spoke 24mm rims
Protoform opel vauxhaul body

Freshly paved aspahalt track , indoor, tight

This is by far the absolute fastest set-up I had on this track, but it tore up my left side tires in 2 heats (the first heat they showed bad signs of wear, but I didn't rotate them because I didn't wanna tear up a full set of tires.

The tires are wearing (in order from worst to best)

Left front- severally blistered
Left rear- badly blistered
Right front- minor blistering
Right rear- wearing but not bad at all

How can I get better life out of my next set of tires?? med-firm thick inserts? Front sway bar? Any other suggestions?

I totally don't like how my car feels with "unmatched" tires or inserts from front to rear so that is definately not an option.....

Thanks in advance!!!
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Old 12-03-2003, 01:13 AM   #2
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What is the temperature of the track surface? Which Sorex inserts are you running: thick, thin, or super thin? What is the stiffness of the insert: medium or firm? That will help in figuring it out. I usually only use 24R's on carpet or on cold asphalt surfaces. On asphalt I usually use 28R's with cool track temps.
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Old 12-03-2003, 02:15 AM   #3
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put foams on your car.... sorted!
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Old 12-03-2003, 07:14 AM   #4
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James- as I stated the inserts are Sorex MED-FIRM THIN inserts, the track is down right cold.... I can't be sure of the exact temps, but the air temp is between 30-50deg..... and after racing all day you can feel the cold from the asphalt in your legs....... it isn't the most pleasant thing....LOL


Black-knight - No it wouldn't be sorted...LOL Foams raise their own set of problems..... ALSO as I stated I run a LOSI XXX-S G+, so I run limiters in my shocks instead of droop screws.... This can make it a pain for between round tuning....
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Old 12-03-2003, 07:34 AM   #5
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IMPACTPLAYR Where are you racing at now? Is this the track down towards Chambersburg? Coming to RCO anytime soon?

Thanks
Brian
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Old 12-03-2003, 07:46 AM   #6
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Brian- what track down towards Chambersburg???? I do need a new place to play...LOL

Hopefully I will be coming up before Christmas with a few freinds.... Do you remember a good foam set-up for the LOSI?
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Old 12-03-2003, 07:54 AM   #7
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I have a fairly good setup that Craig Xavier gave to me as it makes the car very aggressive and twitchy. IF you are at RCO I will show you the setup sheet that I have stiff for the car. It is a spool setup. I also have my orignal setup for a diff that was pretty smooth overall and very consistant.

I thought you raced at that track off or route 70. I think a few of the Xray guys went their. They race asphalt but I thought the place had a small inddor carpet as well. I saw a new place opened up, I think in GlenBurnie if I remembered correctly.
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Old 12-03-2003, 08:23 AM   #8
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Yeah, I race at the track in Hagerstown. They did have a crappy indoor carpet track, but now it has been paved.... mostly smooth.... Glen Burnie is a little far for racing for me. I would rather take a trip to RCO....

BTW: your set-up sounds better for me, I can always dial in more steering if needed...... I've never ran a spool before, but wanna try a one-way sometime soon...LOL
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Old 12-03-2003, 10:20 AM   #9
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IMPACTPLAYR - Can you say tyre warmers? You did have them on for quite a while before you ran.
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Old 12-03-2003, 10:51 AM   #10
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Nope- the warmers where on for 15 minutes, but I only had them connected to the P/S for 4-5, after that they just kept the tires above ambient temp. and I didn't even use them before the last race.....

I am gonna try med-firm THICK inserts and then a front sway bar.

However I most likely will race at RCO next, so I gotta get me some purple foams...LOL.

I'm also gonna work on a droop fix......
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Old 12-03-2003, 10:52 AM   #11
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Quote:
Originally posted by fatdoggy
IMPACTPLAYR - Can you say tyre warmers? You did have them on for quite a while before you ran.
Sorex only makes med and firm inserts, they dont make a med-firm insert. try going to an "A" thick insert in firm compound.
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Old 12-03-2003, 11:05 AM   #12
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How about a higher temp tire? 28R? If 3 out of the 4 tires are blistering and showing a lot of wear it seems to me you need a higher temp tire. You might need to use the warmers more though.
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Old 12-03-2003, 11:06 AM   #13
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Quote:
Originally posted by James Nguyen
Sorex only makes med and firm inserts, they dont make a med-firm insert. try going to an "A" thick insert in firm compound.
I have to disagree:

here are the inserts I have--
https://www.ssl-stormerhobbies.com/c...pl?pn=SRXMB24M

and here are the thick inserts--

https://www.ssl-stormerhobbies.com/c...pl?pn=SRXMA24M

And you say I should try these correct?

https://www.ssl-stormerhobbies.com/c...pl?pn=SRXMA24F

THANK YOU VERY MUCH JAMES!!!!!
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Old 12-03-2003, 11:08 AM   #14
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Quote:
Originally posted by IMPACTPLAYR
James- as I stated the inserts are Sorex MED-FIRM THIN inserts, the track is down right cold.... I can't be sure of the exact temps, but the air temp is between 30-50deg..... and after racing all day you can feel the cold from the asphalt in your legs....... it isn't the most pleasant thing....LOL
i use to race on carpet using 28deg sorex tires and found 32deg better all around, didnt overheat or wear out the tires as quickly as the 24deg.... might i sugggest trying out a higher compound next time.

and , yes i would also try "fuller" inserts.
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Old 12-03-2003, 11:09 AM   #15
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I chose the 24R's because the track temps I am experiencing fall just about in the middle of their rated temps....



I will post pics of the "damage" later tonight.....
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