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Old 08-17-2009, 02:13 PM   #421
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Regarding Spec tires I know Jacos are 37 shore. What shore rating are the CRC Spec tires?
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Old 08-18-2009, 04:57 AM   #422
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Regarding Spec tires I know Jacos are 37 shore. What shore rating are the CRC Spec tires?
All tires approved for this class are the same shore rating, same rubber type. This is the purpose of a spec tire, to ensure that there isn't some advantage to using someone else's tires over others.
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Old 08-18-2009, 08:15 PM   #423
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All tires approved for this class are the same shore rating, same rubber type. This is the purpose of a spec tire, to ensure that there isn't some advantage to using someone else's tires over others.
But, if you measure the different wheel sizes used by Jaco and CRC, you can achieve some difference in performance characteristics between the two brands. Jaco wheels are smaller; so, you can cut the tires further down. I like both for different uses.

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Old 08-18-2009, 11:12 PM   #424
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But, if you measure the different wheel sizes used by Jaco and CRC, you can achieve some difference in performance characteristics between the two brands. Jaco wheels are smaller; so, you can cut the tires further down. I like both for different uses.

Bill
Bill-
Will you eloaborate on the differences that come from being able to cut the tires to a smaller size.
Thanks.
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Old 08-18-2009, 11:43 PM   #425
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Bill-
Will you eloaborate on the differences that come from being able to cut the tires to a smaller size.
Thanks.
When the traction goes off the charts at a certain Northern California carpet track, one viable setup solution is to go with the smallest diameter wheels/tires possible.
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Old 08-19-2009, 08:01 AM   #426
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All tires approved for this class are the same shore rating, same rubber type. This is the purpose of a spec tire, to ensure that there isn't some advantage to using someone else's tires over others.
I did read somewhere some time ago Jaco and CRC Spec tires are not the same compound but not going into details. This is the reason I asked about differences.
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Old 08-19-2009, 08:37 AM   #427
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I did read somewhere some time ago Jaco and CRC Spec tires are not the same compound but not going into details. This is the reason I asked about differences.
ok
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Old 08-19-2009, 08:58 AM   #428
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When the traction goes off the charts at a certain Northern California carpet track, one viable setup solution is to go with the smallest diameter wheels/tires possible.
Not to be a pain (maybe even remind you of when your kids were small). But why?

I think I understand, but for those that don't.
E
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Old 08-19-2009, 11:03 AM   #429
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Not to be a pain (maybe even remind you of when your kids were small). But why?

I think I understand, but for those that don't.
E
There are acouple of reasons a smaller diameter wheel is nice I came up with acouple of reasons.

- Lower profile on the side wall will allow the car to react faster to driver in puts.
- Less likely to traction roll as the foam wont collapse enough on the outside of the rim.
- Less rotating mass on the wheel, faster acceleration.
- Smaller wheels wont rub on the body, and are less likely to chunk.

All of these should allow the car to be faster on the track.

Shawn.
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Old 08-19-2009, 12:42 PM   #430
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smaller wheels flex less as well
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Old 08-19-2009, 04:34 PM   #431
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I think part of it also has to do with the tire mounting. Both donuts are probably the same inner diameter before mounting but on a bigger diameter rim the tire has to stretch more over the rim which is bound to affect the shore hardness to some extent.
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Old 08-20-2009, 01:45 AM   #432
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How large are the CRC rims in compare to the Jaco? And which rim is stronger. I know some rims break very easy.
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Old 08-20-2009, 06:40 AM   #433
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The CRC rim is the same as John's BSR tires, and is a larger diameter than the Jaco rims...
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Old 08-20-2009, 06:59 AM   #434
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We have no BSR Tires here and yet have to see CRC personally. Just know these from pictures. How much larger are these in compare to Jacos?

Regarding larger rims I still have some of the very old TRC BBS rims what are much larger than Jaco, GRP or Corally. Someone remember these?
Try to make a picture later.
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Old 08-26-2009, 11:05 AM   #435
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I was sitting here doing some thinking and after i got inspration for a Corvette body (which hopefully I can have ready to go in time for the new year) I got to thinking...the thing that makes RCGT and VTA so poular is the realistic looking bodies. Would there be a place for having people paint up bodies to look like legit FIA GT or Speed GT race cars? I mean there are some very nice looking Vipers, Corvettes (I like PK Carsport and Luc Alphand adventures from FIA GT myself), Nissans and even Maseratis (with the Gianna set to hit shelves later this year), why not try that or something?
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