ssray Posted July 22 Report Share Posted July 22 My neighbour has a well kept '97 vfr750fv. It's not charging correctly so far I've.... Battery is at 13v resting and drops to 10.5v when starting Brand new and a aftermarket reg rec , show charging at less than 13v and just over 13v The stator dynamic test was 65v,60v and 30v This was the from the plug nearest the stator, I'm guessing it's sounds like one phase on the stator has gone technical Does this sound about right? Not checked this kind of thing for yeast Ta Ray Quote Link to comment Share on other sites More sharing options...
CMSMJ1 Posted July 22 Report Share Posted July 22 Stator is crispy on one phase - you are right! You'll be able to see it..and possibly on one of the 3 yellow charging wires to the reg rec - check they aren't also turning toasted 1 Quote Link to comment Share on other sites More sharing options...
srad34 Posted July 22 Report Share Posted July 22 Goosed genny or crusty terminal block 👍 1 Quote Link to comment Share on other sites More sharing options...
ssray Posted July 22 Author Report Share Posted July 22 Just now, srad34 said: Goosed genny or crusty terminal block 👍 Terminal block is quite clean for a honda Quote Link to comment Share on other sites More sharing options...
srad34 Posted July 22 Report Share Posted July 22 6 minutes ago, ssray said: Terminal block is quite clean for a honda Considering the age of the bike, it’s still done well to last this long I guess 🤔 1 Quote Link to comment Share on other sites More sharing options...
EXUPDEL Posted July 22 Report Share Posted July 22 I get the stators for my old Honda's checked by west country windings. It didn't need a rewind, but while they had it I had the flying leads changed to 1 metre long so I could wire directly into the reg/rec. I also created a small loom so that the reg/rec fed directly into the battery. 2 1 Quote Link to comment Share on other sites More sharing options...
Tumz Posted July 26 Report Share Posted July 26 On 7/22/2024 at 11:01 AM, ssray said: My neighbour has a well kept '97 vfr750fv. It's not charging correctly so far I've.... Battery is at 13v resting and drops to 10.5v when starting Brand new and a aftermarket reg rec , show charging at less than 13v and just over 13v The stator dynamic test was 65v,60v and 30v This was the from the plug nearest the stator, I'm guessing it's sounds like one phase on the stator has gone technical Does this sound about right? Not checked this kind of thing for yeast Ta Ray yes, sounds like the stator could be the culprit. Also check the 1st connector on the above the clutch, they tend to fail and could I guess cause a bad reading if you checked the AC output in the connector going into the rec/reg unit. I have have a pdf copy of the service manual for these, let me know if you need it! 1 Quote Link to comment Share on other sites More sharing options...
ssray Posted July 26 Author Report Share Posted July 26 53 minutes ago, Tumz said: yes, sounds like the stator could be the culprit. Also check the 1st connector on the above the clutch, they tend to fail and could I guess cause a bad reading if you checked the AC output in the connector going into the rec/reg unit. I have have a pdf copy of the service manual for these, let me know if you need it! The connection is in remarkably good condition, At least the reg/rec is not original Quote Link to comment Share on other sites More sharing options...
ssray Posted August 21 Author Report Share Posted August 21 (edited) I finally had a chance to remove the stator, one of the wires was broken and one partially worn through. Looks like I remember stuff from Merton tech neatly 40 years ago https://www.flickr.com/photos/192325275@N04/53938057823/in/dateposted-public/ I'm going to send it to west country windings @EXUPDEL get them to test it and rewind or just replace the wires, he's just bought a s1000xr so the vfr is going as soon as it's fixed Edited August 21 by ssray 5 Quote Link to comment Share on other sites More sharing options...
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