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Old 06-28-2002, 06:29 AM   #1
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Inserts for Sorex tires/high track temps??

Everything I have ever read about tire inserts has been this:
Larger air gaps will let the tire heat up quicker but will overheat on high temp track surfaces.
Smaller air gaps will not heat up as quick and are for hotter conditions.
Sorex's website now says they are coming with a "thinner" insert that will give you more air gap for better traction and will keep the tire running cooler. So which is it??
Are the preferred inserts the Yokomo inserts with larger air gaps or the HPI inserts that fill the tire up more?
What are everybody's opinions????
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Old 06-28-2002, 09:16 AM   #2
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pick one and work around it. too much depends on ur track surface
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Old 06-28-2002, 09:45 AM   #3
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i've recently been having a problem with air gaps in take offs. it's causing ribbing especially on the front. for wear purposes alone, i'd go with the hpi's. it's a solid combo. probably green for higher temps.
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Old 06-28-2002, 10:17 AM   #4
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According to Billy at Speedworld.- (Sorex Distributor)
Sorex Type A inserts for Mod, Type B inserts for Stock.
36R or 40R work very well on high temp tracks.
Speedworld get very hot during the summer months. tripple digits.
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Old 06-28-2002, 10:32 AM   #5
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here we're using the echo inserts but its more thinner compared to other standard inserts available in the market. it has better grip though it overheats much. track temp here is from 62-68 degress celsius or 143- 155 farenheit. below that its been great!

i heard sorex has a new sorex 40R which is more soft and new shape. that's make me wonder if the tires still will last long in hot track temps
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Old 06-28-2002, 11:02 AM   #6
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HPI green insert - yokomo rim - sorex or pit
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Old 06-28-2002, 11:37 AM   #7
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What I am looking for is just a starting point for inserts according to air gaps.
More air gap = Quicker heated tire/increased grip on colder surfaces
Less air gap = Slower heating tire/increased grip on hotter surfaces
Something like that.
Just some info to make a decision on when building tires for 140 degree+ track conditions on concrete and asphalt. I realize setup/car brand/surface smoothness all play a part in what to run for tires/insert hardness but what about the air gap versus the track temp?
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Old 06-28-2002, 11:39 AM   #8
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Plus Sorex now has a thinner insert than either the "A" or "B" that they say has more grip but runs cooler. How does all this air gap thing work?? Shouldnt the increased air gap overheat the tire sooner?
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Old 06-28-2002, 04:17 PM   #9
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More Air gap will allow the tires to cool off more. It allows more air to pass on the inside of the tire and you dont have the insert which will also get hot hold all the heat into the tire.
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