electrical help

[mart]

hi had some problems with the nc electrics last week which ended with a new battery, reg/rec, cdi a few fuses and some solder, and now it would seem to have the same problem of over charging the battery.
with the engine running the terminals read 19v @ 4k rpm so would there be any chance that the generator is destroying the reg/ rec as this one was brand new from a honda dealer or is there somthing else that my thick brain isnt thinking of.

[hardnutdvd]

Go through this step by step problem solver and it should help determine what is causing the issue...

http://www.electrexworld.co.uk/pdfs/Tro ... G-&-RR.pdf" onclick="window.open(this.href);return false;

hope you get it sorted

[mart]

my meter wont read half of the tests on there unfortunately

[rccaulfield]

Try get a lend of a second hand generator in swap it in to see if thats the cause!

[Neosophist]

my meter wont read half of the tests on there unfortunately

No offence but are you using it right?

What meter do you have as my cheap £3.99 aldi meter will read all of those?

Eitherway... 19v @ 4000 rpm is way too high, thats destroying the battery (and also means your reg/rec is no good / dead )

Your battery is also likely toasted, as 19v will boil the battery and sulphate the plates. If it was a new r/r unit (dont ever buy a Honda one, there over-priced and useless!)

For £25 you can get a for all purposes bulletproof 2nd hand GSX-R600 R/R unit that doens't take 5 mins to fit :-)

I'd say you have genny problems too.

Test the genny first... Set the multimeter to Resistance (Ohms).. the smallest setting if its a manual select meter...



This is going to be 200 on the Ohms (Ω) scale.

Unplug the genny from the R/R and put one of the probes to a yellow wire and the other wire to earth.. your multimeter shouldn't give you a reading at all, do this with each of the yellow wires.

Providing you don't get any readings on the first step connect one lead to one yellow wire and the other lead to another yellow wire.. you shuold have a reading of between 0.1 - 1.0 ohms.. (on cheap meteres this is likely to be between 0.1 - 1.6 ohms) anything more and your genny is shagged.

Repeat this test between all combinations of yellow wires.

If it passes this test time to start the bike (with reg/rec still unplugged) and set your multimeter to AC voltage (AC~) as seen in the top right of the picture.. 200 will do (can be 250 on some meters)

Between each of the yellow wires @ 5000rpm you should have around 50v, repeat this with the other combinations of wires... all the readings should be very close to each other.

Try those and see how you get on... if it passes them all, it's quite likely the genny is ok (however it can still be knackered)

Often, putting a new R/R on with a knackered battery will kill a reg/rec.. it is always best to ensure battery is good / less than 2 years old to put the least stress on the reg/rec.

If the genny has gone, it's gonna be new genny / new R/R and new battery... get an R6 reg/rec unit :-)

[mart]

im using the meter correctly its this one http://www.soselectronic.com/?str=371&artnum=42543" onclick="window.open(this.href);return false; its auto and has no range settings.
after talking with the guy a electrix world, ive put it down to a dogey 2nd reg/rec. the battery is fine its brand new with last weekends stuff that i fitted and ive checked the geny today which is fine as it was last weekend.
i just wasnt sure that i was doing the right test the right way and not having to build test rigs with spare bulbs

[Neosophist]

Thats good you have a new battery.

Yes, like in my last post 19v is a faulty reg/rec.. dont' use it with this as it will destroy your new battery very quickly :/

Suzuki ones are the way forward...

If your generator passes all the multimeter tests it can still be faulty as it might be breaking down under load (hence using a bulb to draw some amps through it to test it under load)

I would presume its working and get a new reg/rec to try first.

[mart]

thanks got the reg/rec today and its charging perfectly now atleast untill another thing blows up