Tony, I wish you luck, but I've come to the conclusion that a pair of 6 mm. fasteners just doesn't give enough support to hold reliably. I feel lucky to have made the 280 miles home without the alternator going down completely. Due to an incoming storm I had to put up at Oak Grove, KY and finish the last 150 miles of the trip home in 45* weather yesterday, but the gear I'd packed made it bearable. All's well that ends well, but I don't want to repeat this exercise!
One advantage to excited field alternators is that the power interrupting regulators they use are less electrically noisy than the load dump regulators that PM systems require. I'm mounting an old rotor that meters out good for now and sending another unit to Custom Rewind. As soon as the fresh rotor arrives the old one will go back in the spare parts stash.
Preston, if it's any consolation, I didn't make it either. My gut kept telling me to ride the SV650 Suzuki, but pride goeth before a fall, and I rode the Yam. Due to weather, I planned a stop at McMinnville, TN, about 280 miles into the 460 mile trip. At Paducah, KY, about 70 miles from home, the voltage meter showed below battery voltage with the headlight on; but with the headlight off, it came up to 15V at speed. I almost turned around and went back for the Zook; but I figured there'd be no more than a wiring issue I could resolve pretty easily, so I pressed on with the headlight off. At McMinnville, I gave the alternator a visual inspection. In the Sparx setup, the 6 mm. screws that mount the stock stator are used to mount the adapter plate and are then hidden by the stator. Although secured with blue Loctite, those screws had loosened, allowing the rotor and stator to make contact. No improvement in charging occurred when I tightened up and reset the air gap, so I headed home. The only thing I can give myself credit for is packing the necessary tools. It's worth noting here that the stock stator is supported by the blades cast into the crankcase, so that the two 6 mm. screws give adequate and reliable support. My old alternator is coming out of the stash and going back in service.
Marty, hope you're having a great time!
We're having a good time, but it would be better with you here. I let my 650 sit for two.years and rode it to this. It's doing fine, but my butt is saddle sore.
I wish my butt was sore. and last year, while on route to Deals Gap, one of the three wires came apart at my regulator which sent the 650 XS to side of the road, and back home,,, switched to another 650, my nieces dual sport BWM, and took off down to Graham County. I sent a photo to Marty's' e-address. The seat was like sitting on a 2X6", but well worth it, none the less. Have much fun, ride safe,,,Preston
r80rt: :)This is a splendid write up, THANK YOU!!!!
Dec 26, 2015 16:54:05 GMT -5
mashermoto: What the what is this shoutbox for? Or should I shout, WHAT THE WHAT IS THIS SHOUTBOX FOR!
May 12, 2016 22:22:21 GMT -5
motormike: Good Day ...just a FYI.. Wild Cat is this Labor Day weekend. Still go'n on. A few 650's still make the scene. Various rides at different skill levels each day.. awards dinner sunday eve. BS in the park'n lot after dinner.
Aug 23, 2016 7:57:01 GMT -5
lsettle: First post in over 6 years!
Aug 28, 2016 19:45:17 GMT -5
kardon: Wow quiet here, where did they all go.
Oct 7, 2016 2:18:13 GMT -5
gggGary: XS650.com LOL
Feb 16, 2017 20:49:02 GMT -5
buell88: Anybody have any idea who built the xs650 tracker used in the Draggin Jeans Ad on Pipeburn?
May 16, 2017 16:24:09 GMT -5
joshua: The regulator/rectifier unit I got from Mikes PMA has closer hole spacing than original. Are we supposed to mill the holes to fit?
Jun 7, 2017 19:25:58 GMT -5
joshua: My bad. I found the bracket they supplied to mount the rectifier/regulator... Uh oh. How is this meant to work? Which way is it meant to mount? Looks like I have to use some spacers or something. Good instructions would be nice.
Jun 7, 2017 22:09:52 GMT -5
craig8johnson: Not sure if this is the right spot or not but oh well...
Jul 11, 2017 18:04:15 GMT -5
craig8johnson: I'm checking the charging system. I'm afraid I might have fried the last battery. With the solid state regulator (after market) what should it be charging at. The book says, I think, 15 volts. I'm hitting 17 when revved. Is that too high?
Jul 11, 2017 18:06:19 GMT -5
gggGary: Yes 17 volts is too high, about 14 volts is max, sounds like you don't have the right regulator or it's wired wrong.
Jul 13, 2017 6:54:33 GMT -5
dean: Just saying Hello, new member who is going to fix up a 79 XS650 that has seen its better days. I will definitely have lots of questions coming up.
Jun 23, 2018 16:45:32 GMT -5
tt650: Trying to breathe life into a 1980 that's been stored (indoors) for 25 yrs. Air filters are dry rotted. Have cleaned carbs but she only runs briefly on choke then stops. Need jet setting info and other ideas that might help her idle and rev.
Jul 3, 2018 19:15:19 GMT -5
trix13: Hey everyone! New to the forum and am fighting those gremlins!! New charging system, ignition switch, coil and fuse box. Resistance is higher than normal on the ignition pick up so I'm trying to find one. No such luck yet.
Aug 16, 2018 8:50:48 GMT -5
trix13: Also, even though all of my connections are clean, I cannot seem to find out why , when at higher rpms, I hit the signals and the rpms pulse with the signals...hahah. same with the brake light. I appreciate all input!!
Aug 16, 2018 8:55:08 GMT -5
bob99: how do I post a question. I am new to the forum
Jun 6, 2019 10:52:10 GMT -5
adlpc: Hello all! Been enjoying your edifying posts and discussions - and as a fan of the XS650 since my early teenage years happy that I now own a 1980 Special which I plan to turn into a vintage half faired racer. Thank you all for being here!
Oct 1, 2019 0:58:56 GMT -5
jimothyj: Hello everyone, I just joined & wish would have known about this site in 2014 when I brought my 1974 TX650A back from the grave. I have spent a good deal of $$ and alot of time on it. Just painted it and working on electrical, I will post pics soon,
Apr 10, 2021 2:14:13 GMT -5
louisvan: trix13 - I had a problem with my 1975 SX650. When I got to highway speeds, the engine lost power. The problem was in the connectors. At a certain vibration and the wind pushing on the wiring loom, the connector lost continuity. A bad crimp to the wire.
May 20, 2021 1:19:09 GMT -5