CB400 Top End Speed Issue
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Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
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Re: CB400 Top End Speed Issue
Well the 180kmh restriction uses a hall-effect sensor in the speedo, but that is based on speed not rpm. My rev counter seems to working fine but does anyone know if there is some sort of gear indicator fed through the rev counter/speedo since the issue seems to isolated to 5th and 6th.
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Re: CB400 Top End Speed Issue
I'm having the same issue hereom my 93 nc31, would love to know a solution
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Re: CB400 Top End Speed Issue
what size sprockets are you using.
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Re: CB400 Top End Speed Issue
my nc31 maxed out at 160km I'm running stock size front sprocket and a 40 rear. Didn't matter what gear I put it in either would not go any faster, got upto that speed really quick though.
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Re: CB400 Top End Speed Issue
Any chance there are 33hp restrictor washers in there?
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Re: CB400 Top End Speed Issue
Hi Guys,
I have a very similar issue, 1st thru till 4th the bike will happily rev upto 12k rpm, and the speed will climb quickly, but once i hit 120km/h acceleration slows down and I get max 140km/h from 5th and 6th. Also, I can only use half throttle because if I open the accelerator more the bike sort of surges as if it isn't getting enough air or fuel or both.
Any help guys?
TIA
I have a very similar issue, 1st thru till 4th the bike will happily rev upto 12k rpm, and the speed will climb quickly, but once i hit 120km/h acceleration slows down and I get max 140km/h from 5th and 6th. Also, I can only use half throttle because if I open the accelerator more the bike sort of surges as if it isn't getting enough air or fuel or both.
Any help guys?
TIA