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02-25-2010, 7:18 PM pwtsvwt Joined on 08-10-2008 Richfield, NC, USA Posts 664 Stator Rewind Observations Because there is an excellent Instructional Guide to stator rewinding here, I am not going to do an instructional with this post.  Follows are a few observations that I would like to pass along from my experience with this endeavor. The Instructional Guide appears to be European, and the wire gauges are different than that used here in the US.  I used 18awg (American Wire Gauge).  The 18awg copper core measures 2% smaller (diameter) than the OEM wire.  Although this should make little, if any, difference to the stator's output (watts), I still gave each post one extra turn, that being 25 turns instead of 24 (this increases volts).  The OEM wire was 1.05mm (0.0415").  The 18awg wire was 1.03mm (0.0405"). The Instructional Guide confused me only once.  It said to wind the posts clockwise.  I scratched my head with how to wind the posts clockwise, and to go clockwise from post to post.  After studying the sketch near the bottom of the Guide, I realized that you wind the posts clockwise, and go post to post counterclockwise.  Note:  All observations, post to post wiring, tail connections, and harness connections are done on the rear facing side of the stator (the side closest to the rear cover - farthest from the rotor). Removing the old wire wasn't as bad has I thought it would be.  I used a pair of wire cutters to 'bite' the potting off of both sides of each post.  And, in places I had to chisel potting out from between posts with a small screwdriver & hammer.  Otherwise, it was; cut the lead in wire, grab same with a pair of needle nose pliers, and pull.  Most of the posts unwound without a fight.  But, the wire got stubborn a few times, and broke a couple of times.  Broken wires were fished out with hammer, "chisel", and pliers.  Be prepared to make a mess.  The potting goes everywhere - including the eyes if no protection is worn. The stator's posts are coated with some form of insulation.  This insulation protects the copper windings from the edges of the posts.  Inevitably, some of the insulation will be damaged and / or missing (see photos).  I simply put two turns of electrical tape on each post.  Since I was using a good double insulated wire, I felt that the two layers of tape would suffice. Test, Test, Test.  I did an ohm test on the roll of wire, and recorded same.  After winding a couple of posts, I would do another ohm test, and check for short to ground (stator core).  So, for each of the three phases, I would test the roll of wire and check it (and check for shorts) three more times.  Better to unwind one or two posts than five or six.  Had I found a short, I would have unwound until the phase tested good, cut out the bad wire, and then spliced back to the roll of wire.  Fortunately, all three phases tested good throughout. Use good wire.  I used 18awg 200 degree celsius Magnet Wire.  This wire is double insulated as follows: Base coat: modified polyester resin, Overcoat: modified amide imide resin.  This is really good, tough insulation.  I scrubbed it over post tops, and against other wires, and never nicked it.  Good stuff. The actual rewind took around 4 hours.  That includes two breaks per phase to flex the fingers.  The author of the Guide was right, it is rough on the fingers.  I taped up the thumb and two fingers on the 'wire' hand with duct tape and still ended up with a small blister.  I started each post at the core end, wound to the top (around 10 turns), then pressed the turns against the post with a piece of smooth plastic.  Then 10 more turns to get back to the core end, and five turns up.  This left the out bound wire about halfway up the post (and away from the stator's mounting surface).  I arched the wire to nearly the outer edge on the way to the next post.  This gave enough slack in the wire to bend it out of the way for the next phase(s).  After completing the winding I moved all the connecting wires to where you see them in the photos.  They are a bit tangled at this point, and little can be done to make it neat looking. The Guide was somewhat vague about potting, so.....  I taped up the stator's core and the outer surfaces with masking tape.  I then put three 2" bolts, with nuts, through the mounting holes.  This gave the stator three feet on which to stand.  For Potting, I used Devcon 2 Ton Epoxy.  I used two 25ml 'tubes' in Clear, but I now suggest White.  The clear is Really Clear, you cannot see how much is on the coils.  I mixed the first tube of epoxy and added a little rubbing alcohol to thin it.  Using two aluminum pie pans, I poured the epoxy over the stator's coils (stator upside down for first pour), moved the stator to the second pan and poured the 'drippings' over the stator again.  When the drippings would no longer pour, I used a Flux Brush to apply it.  When there were no more drippings, the stator sat for 24 hours.  The second application of epoxy was not thinned, and all of it was applied with a Flux Brush.  Again, transferring the stator from pan to pan to use up the drippings.  After full curing, I'm left with some 'drips' hanging from the stator (see photos).  I will use a dremel tool and sanding drum to carefully remove the drips. At this writing, this is where I stand on the rewind.  Ready to drop the engine, move the grommets and protective tubing from the old stator to the new, and install same.  I will likely remove the 3 pole connector and use solder joints instead. Costs, stator rewind only: $21.94    200 ft. 18awg 200C Magnet wire - Ebay $13.01    8 ft. 14awg appliance wire (high temp) - Ebay   $7.00    (2) 25ml tubes of Devcon 2 ton Epoxy - Ace Hardware $41.95 Also, solder, soldering paste, and misc heat shrink tubing from tool box. Stator - ready to strip Stator - stripped.  Old potting everywhere Missing post insulation Stator - rewound Epoxy drips and 'flash' ready to sand off My observation:  I hope I never have to do this again! Paul Bought on Craigslist - Restored from Ebay: 82 GL500I - now without the "I" -------------------------------------------------------------- I had all my ducks in a row, but they wondered off!    Report

02-25-2010, 7:43 PM mrcuiser Joined on 10-25-2009 Bellingham, WA Posts 166 Re: Stator Rewind Observations Eeep, I think that if mine ever goes out I will either have you do mine or take a crowbar to my wallet and buy one. Nice job! Honda GL650 Honda Twins forever!    Report

02-25-2010, 8:53 PM Blindstitch Joined on 03-14-2009 Greenfield Wisconsin Posts 9,838 Re: Stator Rewind Observations When ya going to insert that puppy?  I think I'm seeing a side business. 1979 CX500 Supertanker ATGATT makes riding a bike like a sled easier. Quick Reference    Report

02-25-2010, 11:00 PM spanish bandit Joined on 02-12-2009 southern spain Posts 4,998 Re: Stator Rewind Observations brilliant job,thanks for sharing.ought to be copied and pasted into dons sticky[even just as a post,then it wont get lost] when i feel the need,i do it,llego,ve 60,s ----------------------------- 2008.1982 honda gli silverwing [uk model ] 2010.1981 honda gli silverwing [uk model ]    Report

02-25-2010, 11:10 PM Blindstitch Joined on 03-14-2009 Greenfield Wisconsin Posts 9,838 Re: Stator Rewind Observations  spanish bandit wrote: brilliant job,thanks for sharing.ought to be copied and pasted into dons sticky[even just as a post,then it wont get lost] With that being said add some more detail like the amount of time it took, how hard it was to do, worst parts and other. I'll put it up somewhere. 1979 CX500 Supertanker ATGATT makes riding a bike like a sled easier. Quick Reference    Report

02-25-2010, 11:23 PM pwtsvwt Joined on 08-10-2008 Richfield, NC, USA Posts 664 Re: Stator Rewind Observations  Blindstitch wrote: With that being said add some more detail like the amount of time it took, how hard it was to do, worst parts and other. I'll put it up somewhere. Let me 'sleep on it'.  I'll try to elaborate a little tomorrow. Bought on Craigslist - Restored from Ebay: 82 GL500I - now without the "I" -------------------------------------------------------------- I had all my ducks in a row, but they wondered off!    Report

02-25-2010, 11:37 PM Blindstitch Joined on 03-14-2009 Greenfield Wisconsin Posts 9,838 Re: Stator Rewind Observations I don't think it's going to be that comfortable to sleep on but what do I know. I like pillows that aren't stuffed with wire and epoxy. 1979 CX500 Supertanker ATGATT makes riding a bike like a sled easier. Quick Reference    Report

02-26-2010, 9:43 PM Dash Joined on 08-25-2008 San Francisco, California Posts 628 Re: Stator Rewind Observations Great write up.  Thanks for sharing.  How hard was it to get the old wire off? '67 Honda Dream '70 Moto Guzzi Ambassador '75 Suzuki GT250 '76 Goldwing '81 GL500 Silverwing '82 GL500 Silverwing <--just bought it 16 Mar 2010 '90 Yamaha XT350 '91 Kawasaki KDX200    Report

02-27-2010, 11:07 AM pwtsvwt Joined on 08-10-2008 Richfield, NC, USA Posts 664 Re: Stator Rewind Observations Thanks to all for the kudos. I'll install it when we get a couple of days of decent weather - that's 60 deg + for me.  I've got fresh header gaskets, and hopefully everything else is re-usable - after all, it's only been 6 months and a few hundred miles since it was last done. Removing the old wire wasn't as bad has I thought it would be.  I used a pair of wire cutters to 'bite' the potting off of both sides of each post.  And, in places In had to chisel potting out from between posts with a small screwdriver & hammer.  Otherwise, it was; cut the lead in wire, grab same with a pair of needle nose pliers, and pull.  Most of the posts unwound without a fight.  But, the wire got stubborn a few times, and broke a couple of times.  Broken wires were fished out with hammer, "chisel", and pliers.  Be prepared to make a mess.  The potting goes everywhere - including the eyes if no protection is worn. The actual rewind took around 4 hours.  That includes two breaks per phase to flex the fingers.  The author of the Guide was right, it is rough on the fingers.  I taped up the thumb and two fingers on the 'wire' hand with duct tape and still ended up with a small blister.  I started each post at the core end, wind to the top (around 10 turns), then press the turns against the post with a piece of smooth plastic.  Then 10 more turns to get back to the core end, and five turns up.  This left the out bound wire about halfway up the post (and away from the stator's mounting surface).  I would arch the wire to nearly the outer edge on the way to the next post.  This gave enough slack in the wire to bend it out of the way for the next phase(s).  After completing the winding I moved all the connecting wires to where you see them in the photos.  They are a bit tangled at this point, and little can be done to make it neat looking. (I am adding the above 2 paragraphs to the write up) Bought on Craigslist - Restored from Ebay: 82 GL500I - now without the "I" -------------------------------------------------------------- I had all my ducks in a row, but they wondered off!    Report

02-27-2010, 11:47 AM Eurovee. Joined on 12-29-2006 Euroland Posts 512 Re: Stator Rewind Observations I see you took heed on the advice concerning making sure the bobbin to bobbin wires were well away from the mounting boss. Looks a good job! I am at the moment fixing up a 650 engine and the stator i found in there left a little to be desired. The rewinder did not leave enough slack to move the conductors out of the way and realising his error attempted to get around the problem by grinding down two of the three stator mounting bolts to provide clearance. It didn`t work....... FAIL!; (clickables) CX650 Eurosprout CX500 Eurospurt GL650 Silverthing CX/GL 500 CX-periment 24 years and 140,000 miles a CXian...    Report

02-27-2010, 3:33 PM Sidecar Bob Joined on 03-02-2006 Kawartha Lakes, Ontario Posts 1,899 Re: Stator Rewind Observations You're not actually going to put the rewound stator inside an engine where it can't be seen, are you? It looks too pretty for that ;-) Mr. Honda ('83 GL1000/Dnepr) summer The Famous Eccles ('84 GX650EI/Velorex700) winter WHY I HAVEN"T BEEN AROUND MUCH LATELY    Report

02-27-2010, 8:35 PM pwtsvwt Joined on 08-10-2008 Richfield, NC, USA Posts 664 Re: Stator Rewind Observations Eurovee, Someone made a mess!  Putting the post (bobbin) to post wire on the rotor side of the stator (like that 650 one) would make for a neater package.  But, not knowing how much clearance there is to work with, I didn't dare. Bob, I could hang it over the side, but I don't think it would make enough juice like that. My biggest gripe with by beloved GL is everything under that rear cover.  On a bike with the engine rotated the 'wrong' way, most of that stuff is readily accessible. Bought on Craigslist - Restored from Ebay: 82 GL500I - now without the "I" -------------------------------------------------------------- I had all my ducks in a row, but they wondered off!    Report

02-27-2010, 9:40 PM Sidecar Bob Joined on 03-02-2006 Kawartha Lakes, Ontario Posts 1,899 Re: Stator Rewind Observations Yeah, but when you only have to get at the stuff on that side of the engine every 20 or 30 years it isn't really that much of an inconvenience. Mr. Honda ('83 GL1000/Dnepr) summer The Famous Eccles ('84 GX650EI/Velorex700) winter WHY I HAVEN"T BEEN AROUND MUCH LATELY    Report

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