VR Problem

[Gizzard1533]

Well there I was giving my bike a once over before I went away on it for a few days. Ever since the massive electrical problems i had, i've always been cautious of the bikes electrics so gave the VR a quick look at. Upon doing this i noticed this:





One of the generator terminals has melted away along with the space connector, i think its melted or its corroded some how??

Now this made me think that the bike was gonna mess up on me, but since discovering this I've done around 500 miles and the bikes not missed a beat, its run fine, started fine so everythings all good there and it still charges at +1v more than battery voltage.

So my question is what could of caused this? The only explanation i can think of it that the earth and white cable hae been gently touching causing it to arc out, but wouldn't this then show up by causing a problem with the bike?

Cheers in advance

Gizzard

[Stranglerman]

From the looks of that, It's as you said, the wires have arc'd out. I'll put some vr's on the watch list for ya.

[SouthendChris]

http://www.ebay.co.uk/itm/YAMAHA-YZF-R6 ... 3a6c1a1857

That one looks cheap enough! I just managed to get one for £10 inc p&p, saving that one for converting my FZR6.

Chris

[ranmafan]

Now this made me think that the bike was gonna mess up on me, but since discovering this I've done around 500 miles and the bikes not missed a beat, its run fine, started fine so everythings all good there and it still charges at +1v more than battery voltage.

The DC output must have much higher ripple with only two wires - that's the point of using a three-phase winding, I imagine. I'd also guess neither the battery nor the TCI would like that.

It looks like simply a poor/corroded connection heating up to me. An intermittent short to ground... in theory, I imagine the (mechanical) load it would cause would probably make itself noticeable at idle, one way or another. I'd check the stator winding anyway, just in case.

[DonTZ125]

It either arced to ground, or arced to itself - that AC spade may have been loose. The ground pin looks fine; the ground connector is too blurred to see.

Assuming the VRR is still working - and it sounds like it is - the loss of a winding shouldn't cause higher peaks to the battery and TCI; the voltage will be clamped at the effective VR set-point. There could conceivably be phasing DROPOUTS under high load conditions, where that missing winding isn't contributing.

Shameless plug - I build a pigtail connector that replaces the 5 push-on spades with an actual plug. Crop back the existing wires and splice in the pigtail and you're done. $15+8 shipping to the UK; see the link in my sig.

[Gizzard1533]

It either arced to ground, or arced to itself - that AC spade may have been loose. The ground pin looks fine; the ground connector is too blurred to see.

Assuming the VRR is still working - and it sounds like it is - the loss of a winding shouldn't cause higher peaks to the battery and TCI; the voltage will be clamped at the effective VR set-point. There could conceivably be phasing DROPOUTS under high load conditions, where that missing winding isn't contributing.

Shameless plug - I build a pigtail connector that replaces the 5 push-on spades with an actual plug. Crop back the existing wires and splice in the pigtail and you're done. $15+8 shipping to the UK; see the link in my sig.

Have got another regulator in the pipe line and one of your adaptor kits on order for modification time over the winter

[DonTZ125]

Funds received, part should go out tomorrow.

Thank you!

[Gizzard1533]

Lovely cheers pal