burton
Novice Class
Posts: 80
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posted June 12, 2012 02:52 PM
ext swingarm or bolt on extions ?
wanting to bracket race my new 2012 zx14r but i can not decide which way to go on the swing arm, extended or boltons the bike has been lowered has adjustable lowering arms in the rear and the front fork tubs have been raised 3/4 inch in the front,bike also has a full muzzy exhaust system and a pcv with a custom map for it, i also have a couple of sprockets ordered for the rear one is a 39 the other is a 38,the front sprocket is stock, i am try ing to figure how to keep the front end down when launching and and running through first gear. any suggestions or help would sure be appreciated. thanks little Burt
  
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BLK ICE
Pro
we'll leave the light on for u
Posts: 1709
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posted June 12, 2012 03:23 PM
Go with and swingarm at less 64-68 over.
Some tracks reqiure that you have a swingarm or the extensions be welded on.
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kaw-rick
Pro
Posts: 1167
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posted June 12, 2012 03:51 PM
i think extensions are the best way to go for just average racer. ive been 8.50s at 170 mph with them 220-lb rider.
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted June 12, 2012 04:02 PM
I've had extensions at 66" for over 5years with no problems.
If you have the money I would get a arm.
As far as the gearing, I think your going the wrong way. Having a longer wheelbase you can go the other way with gearing.
For example, I'm about 8" over (66") and I run 16/48, but I'm 200lbs in boxers... The lighter guys can go with less gearing. To me, more gearing is easier to keep it consistant.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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Bad in Black
Expert Class
Posts: 348
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posted June 12, 2012 09:53 PM
I was debating getting some extensions for my stock length boosted 14.......just wasn't sure if I could trust them with my life. Who makes the best ones?
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kaw-rick
Pro
Posts: 1167
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posted June 13, 2012 03:07 AM
i have extensions for sale in classifieds.
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