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VFR800 FI - Reg/Rec

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G0FHM
Two Stroke Sniffer



Joined: 20 Oct 2013
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PostPosted: 21:52 - 05 Jun 2016    Post subject: VFR800 FI - Reg/Rec Reply with quote
Hi all,

I know these are a problem....

Mine failed 4 weeks ago. Checked the stator out at the time, all good. Replaced the battery too.

This morning when I pulled up at work, there was the horrible burned plastic smell. Sure enough, the AC input plug has melted itself into one lump! Needless to say there was no DC output.

Have checked the stator windings against the Honda factory manual, and the resistance values tally up, and none of the windings are down to earth. Thing is, the manual mentions no AC voltage figures which would be kind of helpful! I know our old Suzuki Kat should have 80VAC across the phases at a given RPM.....

I suspect a short within the reg/rec which has overheated the AC wires and melted the weakest part.

Is it just bad luck with a duff reg/rec, or do I need to dig deeper?

Cheers
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Dan100tdi
Renault 5 Driver



Joined: 28 Sep 2013
Karma :
PostPosted: 22:43 - 05 Jun 2016    Post subject: Reply with quote
Common problem on the Hondas so I've been told, I have a hornet and mine failed last year, replaced it for a genuine one from wemoto and its been fine since.

Dan
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jaffa90
World Chat Champion



Joined: 06 Apr 2016
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PostPosted: 23:38 - 05 Jun 2016    Post subject: Reply with quote
https://www.bikechatforums.com/viewtopic.php?t=313144
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ADSrox0r
World Chat Champion



Joined: 23 Oct 2012
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PostPosted: 04:53 - 06 Jun 2016    Post subject: Reply with quote
Switch to a mosfet R/R and solder your connections. It's a VFR, it's a their 'thing'.
____________________
Current bikes: '08 VFR 800 VTEC(yo) , '07 ZZR1400 Winter hack: '95 Aprilia 650 Pegaso Currently lusting after: RC30
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weirdomagnet
Derestricted Danger



Joined: 08 Apr 2013
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PostPosted: 07:30 - 06 Jun 2016    Post subject: reg/rec Reply with quote
ive just had same problem.bought vfr750 on a sat went out sunday and reg/rec got fried.bought new one off ebay.( English one not china) and it lasted 2days!! borrowed one off my nc30 and its been fine ever since.what I did do though was lots of heat sink paste on back of reg/rec and got pc fan off ebay.vfr750 forum has good advice on how to wire up fan to rear brake light switch so fan comes on when ignition comes on and how to mount the fan.you tube or google should show how etc.its a big/common problem on most Hondas,vfrs are the worst though.also recommend carrying a spare reg/rec on bike in future !! Crying or Very sad Rolling Eyes Shocked https://i894.photobucket.com/albums/ac143/glennexup/IMG-20160507-WA0019_zpswmv4h2nc.jpg https://i894.photobucket.com/albums/ac143/glennexup/IMG-20160507-WA0018_zpscyffprdj.jpg https://i894.photobucket.com/albums/ac143/glennexup/IMG-20160507-WA0015_zpsumlxqkyp.jpg https://i894.photobucket.com/albums/ac143/glennexup/IMG-20160507-WA0010_zpspkbgbunq.jpg
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Meatybeaty
World Chat Champion



Joined: 10 Apr 2016
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PostPosted: 07:48 - 06 Jun 2016    Post subject: Re: VFR800 FI - Reg/Rec Reply with quote
G0FHM wrote:
Hi all,

I know these are a problem....

Mine failed 4 weeks ago. Checked the stator out at the time, all good. Replaced the battery too.

This morning when I pulled up at work, there was the horrible burned plastic smell. Sure enough, the AC input plug has melted itself into one lump! Needless to say there was no DC output.

Have checked the stator windings against the Honda factory manual, and the resistance values tally up, and none of the windings are down to earth. Thing is, the manual mentions no AC voltage figures which would be kind of helpful! I know our old Suzuki Kat should have 80VAC across the phases at a given RPM.....

I suspect a short within the reg/rec which has overheated the AC wires and melted the weakest part.

Is it just bad luck with a duff reg/rec, or do I need to dig deeper?

Cheers

Could be alot of different things but somewhere to start, here Thumbs Up
https://vfrworld.com/forums/showthread.php/39277-How-to-fix-common-regulator-Stator-failures
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Old Thread Alert!

The last post was made 9 years, 242 days ago. Instead of replying here, would creating a new thread be more useful?
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