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Old 11-11-2013, 11:44 AM   #1
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Default U4RC Current Class Specs/Rules ***UPDATED 07/21/2016***

*UPDATED RULES EFFECTIVE 7/21/2016 *

RULES | U4RC.com


7/21/16

***RULES UPDATE***RULES UPDATE***RULES UPDATE***

In an attempt to keep Solid Axle and IFS rigs racing together in the 2.2 Trophy class, while remaining to leave a wide variety of tire options available to the IFS rigs, U4RC has made the decision to expand the 2.2 Trophy class width rule to 12.75"(outside-of-tire to outside-of-tire) effective immediately (07/21/16).

The 12.5" rule stands for the upcoming Nationals event in CV, because this Nats is adjoined to the previous rule set. If we encounter a driver at Nats that wants to race a rig that is 12.75" wide, we will conduct a vote at the "driver's meeting" from all drivers in said class. (majority wins vote).

This is a national level U4RC rule, check with your local track for facility specific rules.







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Last edited by axelsnapr; 07-21-2016 at 01:36 PM. Reason: rule update
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Old 11-18-2013, 09:07 AM   #2
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Default Re: U4RC Current Class Specs/Rules

I love the sound of the Trophy 2.2 class
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Old 11-18-2013, 10:31 AM   #3
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Default Re: U4RC Current Class Specs/Rules

Ya that's my Class and its my favorite too Its a beautiful thing when you can cross Scale-crawlers-fast!!!!! Its awesome!
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Old 11-21-2013, 08:09 AM   #4
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Default Re: U4RC Current Class Specs/Rules

Quick question on the driver requirement for Trophy 2.2. Does it have to be two drivers or can it be one?

I only ask because most all of the pictures I'm seeing have two, and I don't know if it's just personal preference or not.
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Old 11-21-2013, 09:20 AM   #5
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Default Re: U4RC Current Class Specs/Rules

One driver is fine. I think most have two since a lot of people are using the same interior.
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Old 01-08-2014, 07:12 AM   #6
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Default Re: U4RC Current Class Specs/Rules

So im guessing that the 2.2 axial bfg's i shut to 1.9 arent gonna fly....darn it!
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Old 01-14-2014, 03:27 PM   #7
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Default Re: U4RC Current Class Specs/Rules

more info on motor, trans, battery limitations per class?
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Old 01-14-2014, 05:35 PM   #8
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Default Re: U4RC Current Class Specs/Rules

Quote:
Originally Posted by cfc.jason View Post
more info on motor, trans, battery limitations per class?
*At this point there is no motor type or limit rule in any class. Too big of a motor can actually make getting around the track more difficult.

*Shafty type transmissions is the rule in all classes. Single or multi-speed are allowed.

*There are no battery size/cell limitations in any class. the only rule is that it must be hidden in a scale fashion and chassis mounted.



These rules will stay thru the 2013-2014 Winter Series. Hope this info helps...
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Old 01-26-2014, 04:50 PM   #9
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Default Re: U4RC Current Class Specs/Rules

I vote against motor limitations. U4 isn't like short course which has well groomed courses...some tracks will be hard packed dirt while others will be deep, loose sand which will require a powerful motor to navigate.
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Old 03-05-2014, 04:46 AM   #10
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Default Re: U4RC Current Class Specs/Rules

Qustion on Ultra4 trophy class, if u enter with a custom chaassis u must gave a store bought skid?
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Old 03-05-2014, 07:46 AM   #11
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Default Re: U4RC Current Class Specs/Rules

Quote:
Originally Posted by Mr Hyde View Post
Qustion on Ultra4 trophy class, if u enter with a custom chaassis u must gave a store bought skid?
Not at all, no specific skid plate required
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Old 03-05-2014, 07:48 AM   #12
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Default Re: U4RC Current Class Specs/Rules

Cool thanks for ur quick response
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Old 03-05-2014, 09:27 AM   #13
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Default Re: U4RC Current Class Specs/Rules

What's the reasoning behind the 8lb minimum in 2.2 trophy?
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Old 03-05-2014, 09:59 AM   #14
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Default Re: U4RC Current Class Specs/Rules

I was wondering the same thing...
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Old 03-05-2014, 10:05 AM   #15
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Default Re: U4RC Current Class Specs/Rules

Quote:
Originally Posted by michael View Post
What's the reasoning behind the 8lb minimum in 2.2 trophy?
When we started there was only one 2.2 class. The cars running in it at the time ranged from 4.5 lbs to 12.5 lbs. Not really fair.

We took the lightest full fab 2.2 (8.5 lbs), gave an additional 1/2 lb for weight reduction, and came up with 8. So far it has been a well received rule locally.
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Old 03-05-2014, 10:13 AM   #16
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Default Re: U4RC Current Class Specs/Rules

Quote:
Originally Posted by Rockpiledriver View Post
When we started there was only one 2.2 class. The cars running in it at the time ranged from 4.5 lbs to 12.5 lbs. Not really fair.

We took the lightest full fab 2.2 (8.5 lbs), gave an additional 1/2 lb for weight reduction, and came up with 8. So far it has been a well received rule locally.
Thanks!
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Old 03-05-2014, 07:03 PM   #17
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Default Re: U4RC Current Class Specs/Rules

The 2.2 trophy cars work well, just don't take one to the leg while marshaling. Ouch...
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Old 03-06-2014, 08:20 PM   #18
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Default Re: U4RC Current Class Specs/Rules

Quote:
Originally Posted by KRAWLR4life View Post
Not at all, no specific skid plate required
Great this is what i will be running
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Old 03-16-2014, 08:22 PM   #19
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Default Re: U4RC Current Class Specs/Rules

I really feel that tire narrowing should be allowed. I realize that in Ultra4 the

only tire mods that can be made are siping and grooving BUT 1:1 tires are

generally available in differing widths...not true of RC tires. For us, the ideal

range is between 1.5" and 2" wide and the size depends on the weight of the rig

as well as track conditions. I think that locking drivers into factory widths will

only hurt the segment.
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Old 03-16-2014, 10:06 PM   #20
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Default Re: U4RC Current Class Specs/Rules

Quote:
Originally Posted by crawl-o-matic View Post
I really feel that tire narrowing should be allowed. I realize that in Ultra4 the

only tire mods that can be made are siping and grooving BUT 1:1 tires are

generally available in differing widths...not true of RC tires. For us, the ideal

range is between 1.5" and 2" wide and the size depends on the weight of the rig

as well as track conditions. I think that locking drivers into factory widths will

only hurt the segment.
I agree with so much customizing to peraonal preference in the ultra 4class the limitations should be as minimal as possible ----over 8lbs and balls out.
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