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 SuperFour & CB1 Owners
 The Workshop - SuperFour Owners
 can't do more then 60mph!
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qcue
New Member

United Kingdom
1 Posts

Posted - 04/09/2007 :  08:04:28  Show Profile
Hope someone can help, a friend slid my bike down the road and smashed the clocks off, I have fixed her up but haven't got a rev counter on her, have used a universal speedo which works perfectly but since having no rev counter the bike will do no more then 60mph, it limits out on the revs. I would like to know if wireing any rev counter up to her will stop this as new superfour clocks are £600 new and can't find second hand ones anywhere, also it's getting a bit embaressing being overtaken by lorries :) My bike is a 1994 cb400 superfour.

a_morti
Senior Member

United Kingdom
1344 Posts

Posted - 04/09/2007 :  08:32:20  Show Profile
It's the restrictor. many many threads about this... most recently one in the vfr workshop, have a Search.

WWW.HONDACB1.CO.NR
+ NC29 swingarm ('29 wheels soon), Quill T3 Ti, lots of black, blade rear hangers, beet rearsets, brembo brake. Top mods: BT45's, touring screen & rack with 50L box! Stolen recovered, scumbags best not try again.
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heppie
Settled In Member

United Kingdom
80 Posts

Posted - 04/09/2007 :  09:27:05  Show Profile
yer as said theres a circuit in the speedo which restricts the bike to 180kmh by cutting out 2 of the cylinders when it reaches that speed. The way that the circuit is wired up having no speedo(and no restrictor circuit) means the ecu thinks the bikes doing 180kmh all the time so only runs 2 cylinders. There are a couple ways of sorting this but i will not go into it here, there are many previous posts on how to do this just do a quick search.
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superfourben
Regular Member

United Kingdom
505 Posts

Posted - 04/09/2007 :  22:46:59  Show Profile
try this... http://www.400greybike.co.uk/Wksp-NC30Derestriction.asp

Good times!
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bootz76
Familiar Member

United Kingdom
238 Posts

Posted - 10/09/2007 :  09:26:21  Show Profile
easy fixed..find the orange wire that went into the clox,connect to a live feed.end of problem,mine has been like that for the past 60k miles.no problems.i use a cb500 clox with modified tacho internals
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Drewski
Settled In Member

United Kingdom
85 Posts

Posted - 16/09/2007 :  12:58:04  Show Profile
If your still looking for a set of SF clocks, I can get a used set from Japan and they're a lot cheaper than over here.

Born To Ride, Ride To Born!
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Eddie v twin
Regular Member

United Kingdom
878 Posts

Posted - 19/09/2007 :  19:01:45  Show Profile
at the CDI or ECU , you need too source two wires. First the BROWN/BLUE STRIPED wire cut it. Then a BLACK/WHITE wire you need too remove a small amount of the plastic insulation. Then solder a 2k ohm resistor ( 20p from maplins)fomr the bared BLACK/WHITE wire too the BROWN/BLUE STRIPED wire at the CDI END !!!not he loom side, then away you go

Eddie
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Eddie v twin
Regular Member

United Kingdom
878 Posts

Posted - 19/09/2007 :  19:02:30  Show Profile
at the CDI or ECU , you need too source two wires. First the BROWN/BLUE STRIPED wire cut it. Then a BLACK/WHITE wire you need too remove a small amount of the plastic insulation. Then solder a 2k ohm resistor ( 20p from maplins)fomr the bared BLACK/WHITE wire too the BROWN/BLUE STRIPED wire at the CDI END !!!not he loom side, then away you go

Eddie
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