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Post by Macrofeet on Apr 12, 2006 18:44:03 GMT
this is off me 125 Am i right in thinking this is just a resistor or is there a diffrent name for this part 30w 6.9 and 5w 5  dident think it was in such a bad way only just noticed how rusted and messed up it is the underside is all damp and falling apart and the top as you can see is rusted need to test with a multimeter, but being a bit dence i'm not 100% sure how to any help on this would be really usefull |
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Post by oldperson on Apr 12, 2006 19:13:12 GMT
They are just resistors the large one is in the headlamp circuit and the smaller one is in the choke circuit.
They are connected together at the fixing point (the rusty bit with the hole) with your meter set on the smallest ohms scale you should have continuity from each wire to the frame fixing one should show about 7 ohms and the other about 5 ohms (one meter lead on the point where the wire is soldered on and the other lead on frame fixing) don't forget to check the meter by touching the probes together which should show about 0.3 ohms) if they are OK just clean the rust from the contact area etc and reconnect (smear grease over connection etc )
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Post by Macrofeet on Apr 12, 2006 20:10:09 GMT
thanks alot
thats one more thing i've lernt
the smaller one listed as "automatic bypass - starter resistance" in manual
if this is broken could it affect the plug sparking in anyway or is it just for the choke
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Post by oldperson on Apr 12, 2006 20:32:24 GMT
Just the choke. It would not effect the spark (unless it got very very hot and burnt the kill switch or ignition sw wire which is not likely). The coil, cdi, magneto and pulse coil work the ignition. All these can be checked with you multimeter.
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Post by oldperson on Apr 12, 2006 20:41:27 GMT
Resistors tend to fail by going open circuit (no continuity) but can also become high resistance (5 ohm becoming 100 ohm or short circuit (5 ohm becoming 0,5 ohm)
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Post by Macrofeet on Apr 12, 2006 21:11:50 GMT
Tested them both results are as follow
when black and red touched together meter reads
200 = 00.5
2000 - 001
20k - 0.00
on part
longer red resistor reads
2000 - 306
20k - 0.31
shorter blue reads
2000 - 119
20k - 0.12
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Post by oldperson on Apr 12, 2006 21:38:00 GMT
both are high resistance check between the soldered connections on each resistance(the one with the wire and the one without) then between the soldered end without the wire and the mounting plate
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Post by Macrofeet on Apr 12, 2006 21:54:56 GMT
looks like i'm gonna need to replace i just re tested the multimeter on the bikes coil and everything was good thanks for your help  |
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Post by oldperson on Apr 12, 2006 21:58:35 GMT
It's most likley to be a bad connection due to the rust
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