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4-cycle rear width

 
Post new topic   Reply to topic    eKartingNews.ca :: Canada's Leading Karting Website Forum Index -> Honda Four-Cycle Racing
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4-cycle senior rear width should be increased to 53 inches
Yes
84%
 84%  [ 11 ]
No
15%
 15%  [ 2 ]
Total Votes : 13

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John Kwong



Joined: 12 Aug 2006
Posts: 56

PostPosted: Fri Nov 18, 2011 10:12 am    Post subject: 4-cycle rear width Reply with quote

I would like to see 4-cycle maximum rear width increased to 53 inches from the current 50 inches. I think the karts look ridiculous with the cadet rear bumper and the rear wheels so far inside the sidepods. The 50 inch rule is outdated from when American chassis were the standard. There are Junior classes that are allowed to be 53" so why not 4-cycle senior?

Pretty much any chassis used that is not specifically designed for 4-cycle has to have the axle cut to make the 50 inch rule. I figure by at least bringing this up on the forum that the wheels of change could begin or maybe this will get shot down.

John K
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John Kwong



Joined: 12 Aug 2006
Posts: 56

PostPosted: Thu Dec 01, 2011 9:04 am    Post subject: Reply with quote

In addition to the width rule, the limitation on rim width is also outdated.

Quote:
Width of any rear rim in all Junior and Senior four-cycle classes is 175 mm MIN. - 185 mm MAX. when using DRY tires


A cadet kart can measure out at 136cm rear width while senior 4-cycle is stuck on skinny tires and outdated narrow rear width. Let's get these karts into the modern era and allow 7.1 inch rear tires and 53" rear width.

John K
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Russ Walsh



Joined: 27 Aug 2010
Posts: 90
Location: Canada, British Columbia, Rosedale

PostPosted: Mon Dec 26, 2011 3:21 pm    Post subject: Reply with quote

Hey John

The 7:10 rear tire will only slow you down but put a 600 on a 210 rear wheel now you can play a little....

The rear width could be a little wider for sure....not sure I would run it much though.....bin there dun that not faster most of the time.

Later
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Russ Walsh
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John Kwong



Joined: 12 Aug 2006
Posts: 56

PostPosted: Tue Dec 27, 2011 1:15 pm    Post subject: Reply with quote

Russ,

Most of the guys here have been raiding the used tire bin for their 4-cycle tires which are almost all Mojo's. This makes for an incredibly low cost season of racing. Our numbers at CKRC for 4 cycle have almost doubled to 12-14 racers in the last 2 years. With the LO206 powerplant voted in as the only point scoring engine for 2012, we hope to see close to 20 racers this coming season. The Bridgestone tires work okay but it is pretty hard to compete with free and the Mojo's never really go off on a 4 cycle. Unfortunately, Mojo doesn't make a 6 inch tire. Kart bodywork has changed a great deal since those 4 cycle rules were originally introduced and the 50" (127cm) width rule is outdated making the karts look dysfunctional from the rear view.
Our club disregarded the width rule last year so I have been running 53" for all of our club events. The Bridgestones being narrower was a bit of an adjustment for WCC in Calgary but it wasn't any faster.

John K
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Russ Walsh



Joined: 27 Aug 2010
Posts: 90
Location: Canada, British Columbia, Rosedale

PostPosted: Tue Dec 27, 2011 10:41 pm    Post subject: Reply with quote

hi john
i agree with your concept of cheap racing....and guess what.....mojo does make a 180mm tire now......ask joey about it.

it makes good sense to adjust the rule to meet the needs of karters today.

later
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Russ Walsh
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John Kwong



Joined: 12 Aug 2006
Posts: 56

PostPosted: Sun Jun 03, 2012 8:04 am    Post subject: Reply with quote

We are 3 races into the season now and I am still living off leftover Mojos. A couple guys have tried the smaller D1 Mojos. Our Senior 4-cycle club entries have blossomed this year with 14 at the seaon opener, 21 at the second race and 24 at the 3rd race. Exceeding our pre-season expectations. We know there are at least another 5 or 6 karts that have not seen the track yet this year.

Here is some action from Race 2: http://www.youtube.com/watch?v=Ne4_ioAdn2Y&feature=g-upl

John K
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