help please
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help please
i was out riding and bike died i check batt it was frying and 10amp ignition fuse blown not turning over called rac he put booster pack on it changed fuse it startedfine as soon as he removed the booster pack it died again and blew the fuse tryed again this time clouds of smoke from the cdi now heres the questions 1 what caused batt to fry it was 4 years old . 2 does this mean the reg/rectifier is no good or would a dodgy cdi fry a batt. 3 would a cdi fry because of booster pack . 4 any suggestions who sells these parts new as bike is 23 years old . 5 would any other cbr cdi units work. one more can these bikes be wired to run without a batt as mine dont thanks for any help
Senior Member
Joined: Nov 2007
Posts: 557
Likes: 5
From: Colorado Springs
1) a batteries normal life span is about 4 years. since motorcycles usualy get run less, the life span goes down.
2) more likely the regulator isn't controlling the current, possibly overcharging the battery. the cdi doesn't produce current and i dont see how the cdi would damage the battery. it'd be the other way around
3) the cdi could have been fried from the booster, over current from the battery, or something is wrong with your wiring.
4) i have a spare cdi, what year is your bike? other sources for the reg; bikebandit.com
5) depends what year your bike is to what cdi you need. you will have to get one from a similar year CBR. the 87-88 F1's didn't have a kickstand safety switch, and the 1990's only used one pulse generator instead of the previous two.
extra credit/bonus question) i think you will have to keep the battery in the circuit to initialy power the ignition. im not positive, but i dont think the alternator makes enough current at low rpm's to be able to bump start your bike without a battery.
do you have a manual? you can download one at cbrextreme.com, search for it. i would go through the tests for all the electrical components. use a volt/ohm meter and test the alternator, and voltage regulator. the blowing fuse part is kinda weird. that to me indicates a short somewhere either in the eletrical components, or bad main harness wiring.
2) more likely the regulator isn't controlling the current, possibly overcharging the battery. the cdi doesn't produce current and i dont see how the cdi would damage the battery. it'd be the other way around
3) the cdi could have been fried from the booster, over current from the battery, or something is wrong with your wiring.
4) i have a spare cdi, what year is your bike? other sources for the reg; bikebandit.com
5) depends what year your bike is to what cdi you need. you will have to get one from a similar year CBR. the 87-88 F1's didn't have a kickstand safety switch, and the 1990's only used one pulse generator instead of the previous two.
extra credit/bonus question) i think you will have to keep the battery in the circuit to initialy power the ignition. im not positive, but i dont think the alternator makes enough current at low rpm's to be able to bump start your bike without a battery.
do you have a manual? you can download one at cbrextreme.com, search for it. i would go through the tests for all the electrical components. use a volt/ohm meter and test the alternator, and voltage regulator. the blowing fuse part is kinda weird. that to me indicates a short somewhere either in the eletrical components, or bad main harness wiring.
Senior Member
Joined: Nov 2007
Posts: 557
Likes: 5
From: Colorado Springs
ah, i dont know if bike bandit ships overseas. should be local companies, or even a honda dealer can order parts.
let me verify my cdi works, i've never actualy tested it. my bike is an 87, so if it works ill figure out a price shipped to the UK.
i'd first find out why the fuse is blowing. did it only blow the fuse when the booster was hooked up? i would think a booster would work the same as an extra battery. i know its safe to run your bike off a car battery, but only if the auto alternator isn't charging.../car not running. its possible the booster pack is over powering the system, but i would take a close look at all the wiring also.
let me verify my cdi works, i've never actualy tested it. my bike is an 87, so if it works ill figure out a price shipped to the UK.
i'd first find out why the fuse is blowing. did it only blow the fuse when the booster was hooked up? i would think a booster would work the same as an extra battery. i know its safe to run your bike off a car battery, but only if the auto alternator isn't charging.../car not running. its possible the booster pack is over powering the system, but i would take a close look at all the wiring also.
