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ZXR regulator/rectifier

Discussion in 'Kawasaki 250cc In-line 4's' started by zixxer, Mar 4, 2014.

  1. zixxer

    zixxer Well-Known Member

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    was looking at the part number for the regulator and it seems to be a common part on many kwaka's, are these interchangeable or will i have to get one specifically for a zxr250.

    pretty sure they will all do the same thing, they have the same number of pins and are bolted on the same way.
     
  2. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    Yep, there are used on heaps of bikes, I have one if you need it, $40 plus post
     
  3. GreyImport

    GreyImport The Big Cheese Staff Member Contributing Member

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    Just out of curiosity , whats up with your old one?

    Some extra stuff I was going to eventually post under this subject ....

    Heres how to test your RR ....

    RR test.jpg

    As mentioned in my ZXR thread heres what I found from some overheating.

    Burnt Toast.jpg

    To me its a very poor design having the RR where it is (apart from the well documented roger robot hoses)

    Its in a very tight spot and as can be seen here is smothered by the tank and its foam padding and the bottom cooling fins are covered by the frame (and obviously the airbox is usually there also) .....

    RR under tank.jpg

    I would look at removing a section of the foam pad around that area to increase airflow.
    I would also check you have the rubber grommets between the tank and frame to insure the tank is raised as high as it should be .
    My bike was missing the front grommets at the fixing point so it was possibly pulling the tank lower onto the RR.

    Tank grommets.jpg

    My plan is to move the RR to either somewhere off the rear subframe or to the front here where the horn was attached .....

    RR placement.jpg


    Of course the ultimate solution is a replacement mosfet .....

    http://roadstercycle.com/

    http://www.ebay.com.au/itm/SHINDENG...-RECTIFIER-KIT-REPLACES-FH012AA-/380704480069

    mosfet.jpg
     
  4. zixxer

    zixxer Well-Known Member

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    old one is killing battery's, if i have any load on the battery before starting it just cranks itself dead really quick, also doesnt charge properly if i have high beams on which i do like to ride with. I have had the battery charged and checked and swapped out and it just done the same to the new battery, while riding there is no problem just when i stop or the next morning.

    its temperamental though, some days its fine and will be charged in the mornings or after riding and others the battery is weak in the morning and even after a decent ride is still weak, especially if i have the fan and headlights working while riding. It may be the stator as kiffsta told me, so i might test it on the weekend if the weather is bad and i cant ride.

    and your right the rr is in a stupid position, so many better places they could have put it, i do have those rubber ends on the front of the tank though.

    also not sure if this is a RR problem but the battery wont charge in the wet, especially if its pissing down rain.
     
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  5. venom80

    venom80 Loud pipes save live's

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    I have the exact some problem with mine I was riding to work this morning and it was wet and ever time a came to a stop was having to keep tapping the throttle (I bet everyone around me was thinking what a dick) I got a new (second hand) RR on the weekend Ill be swapping it tonight fingers crossed it helps..
     
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  6. GreyImport

    GreyImport The Big Cheese Staff Member Contributing Member

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    Guys when u go to replace the RR have a close look and feel of the wiring up to the plug ..... as u can see the breaks in the yellow (stator) wires in my photo , well the wire covering is very brittle from the heat build up.
     
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  7. zixxer

    zixxer Well-Known Member

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    yeah i have to do that sometimes venom, it will sit at 1700 odd then drop alittle like it wants to stall then comes back.

    my wiring pretty much all over the bike is fairly hard grey, the wiring leading to the plug is also hard, not much movement in any of them at all.
     
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  8. venom80

    venom80 Loud pipes save live's

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    I changed my RR last night, low an behold it rain this morning on the way to work and the bike run much better im going to go though and redo all the wiring this weekend and hopefully that’s problem solved
     
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  9. Phil

    Phil Well-Known Member Premium Member Contributing Member

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    Many moons ago my mechanic was telling me that up to 90% of faults that he encountered on bikes were connection related. Poor earthing, broken connections and of course broken wires were prevalent on most bikes.

    This got me thinking about an old adage: OUT OF SIGHT, OUT OF MIND! Sort of makes sense, how often do we have a close look at our wiring loom and all the connectors hanging off it, Bloody never! The loom travels the full length of the bike, areas that are cool to getting red hot, does go through the full range and various temperatures. Subjected to many variances along it's path and heat seems to be the enemy in many break downs. Rectifiers vary in there location from manufacturer to manufacturer, space as we all know is at a premium and I think getting the rectifier in an area that cops less heat can be a bonus, case in point Greys connector burn out, heat was the culprit.

    One thing that members of the forum have taught me, the need for a good contact cleaner. This make good sense, the simple task of cleaning all electrical connectors can and does eliminate problems with our machines, a little preventative maintenance goes a long way and keeps our bikes on the road rather than in the garage. OK by me.
     
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  10. zixxer

    zixxer Well-Known Member

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    i just got caught in the rain and low and behold it didnt start again after i turned it off lol

    clutch start in torrential downpour is crap
     
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  11. zixxer

    zixxer Well-Known Member

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    isnt it good to lightly sand connections aswell.
     
  12. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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    Yes, to get a bright clean connection. Must put some sort of dilectric grease (special grease for electrical connections available from Superthief, Autobarn, etc) to stop corrosion from returning.
     
  13. zixxer

    zixxer Well-Known Member

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    well the new regulator seems to be working like it should again, bike is charging properly with high beams and fan on, also starting alot easier.
     
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  14. Phil

    Phil Well-Known Member Premium Member Contributing Member

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    My guess is you would have to be pleased with the result. :thumb_ups:
     
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  15. zixxer

    zixxer Well-Known Member

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    no more clutch starting like a fool in the parking lot with a crowd looking at me, im not disappointed.
     
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  16. Naboua_Zixxer

    Naboua_Zixxer Member

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    Does anyone know if parts are interchangeable between zxr250 and zxr400, I've found a written off zxr400 for NZ$200 and in thinking about buying to use use for parts, ie RR
     
  17. maelstrom

    maelstrom LiteTek Staff Member Premium Member Contributing Member 250cc Vendor

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    I had a brief look at my wiring loom as I removed it from my 400 with tin snips. A snip here and a snip there. Came off really easily. My brother-in-law, who is Thai and doesn't speak a word of English, was just gobsmacked. You have to laugh :)
     
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  18. Grasshopper

    Grasshopper Andys Bike Bits Staff Member Premium Member Dirty Wheel Club 250cc Vendor

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    Talking about electrical connectors... One of the best cleaners to use on them is Lanolin spray (or INOX, which has Lanolin in it); it cleans but also protects from future corrosion... I got this tip from an Auto Electrician... and it works a treat...
     
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