Brand new to motorcycles and the XS scene

pdxtx

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Hey all -

I just picked up a '74 TX650a and I've been drooling over everything that is virtually a bolt on improvement! I recently got my motorcycle endorsement, and I'm really just anxious to start riding this old bike. I've been around cars for a long time, have done a lot of track days and autocrosses, weird engine swaps and other builds, but I'm just now finally getting my feet wet with motorcycles - and the little exposure I've had has been a lot of fun. Also, the fact that bike parts are so much smaller than cars makes doing things in my garage at all hours MUCH easier.

Currently, the TX needs a little restoration. The tires (100/90-19F 110/90-18R) look a bit old and crusty, so I've been thinking of having those replaced while having the wheels checked and trued (??), along with new rim straps and tubes. Then, probably a proper oil change touching both the side and sump filters. The turn signals just stay on, and the flasher is buzzing really loud at me, so I'm guessing I"ll need to remove the gas tank and either replace the flasher, or check each of the bulbs to make sure there isn't anything wonky with them. They all light up, just no flashing.

The major part that I want to pull the trigger on, but haven't - has been the PMA & ignition combo. As I understand it, I already have the mechanical advance rod in the head, so I don't need to spend money on that - I really just need the ignition bits, and the e-advancer to make it all happy?

The dreaded starter grind is also there, so that's going to be my first attempt at cracking open the engine and solving that problem. I'm going to attempt the vice fix on the circlip/spring first before i spend money on the Mikexs fix, since that sounds like a gamble on working the first time anyway.

Hopefully this hasn't been too noob or long winded. Looking forward to learning a lot more about motorcycles shortly!
 
pdxtx welcome to the site.
A couple of tips that hopefully will be helpful.
Very few shops understand how anything on the XS works or how to fix them.
If you choose to use a shop generally you will be paying for their work AND education.
If you need parts be selective in the supplier. The majority of bits and pieces can be sourced somewhere besides the vendor that is known for poor quality items.
You might consider working with what you have before making any changes.
Get to know the bike and it's idiosyncrasies. You will either love it or not.
Beauty and style are only part of the allure. The thrill is to the bone. IF you like them.
A cash cow/ bottomless money pit if you don't.
Good luck with your project.
 
Hi pdxtx and welcome,
if you want to ride the thing, fit new tires, fix what's not working right then leave it the f**k alone!
[edit] If the stock alternator & points iggy works why do the big spend in a PMA/Pamco set-up?
Even if the stock gear don't work it's still less costly to fix it than to go aftermarket. [end edit]
However, if you want a tinker toy to pour a fortune into, there's lots of list members that'll advise you about that.
 
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From one noob to another:

On my 82, I pried apart the flasher relay and pulled the contacts apart with my fingernail. They froze together from sitting. I suspect that fix would work for you.

Also like has been said, do not ride with those tires. It can't be stated enough. 90% of single motorcycle crashes are from improper cornering. I didn't trust my life with a contact patch the size of a postcard on old rubber, so I bought new tires, and the ride is 1000 times more fun. Replace them, fix what's broke, and don't touch a thing. Buy another to customize.

I also wanted to get my wheels checked and trued. So I have to learn how to do that. When I asked the guy who mounted and balanced my tires, he just mumbled some stuff and thought the wheels were from a Harley.

As far as suppliers, I've found this thread useful:

http://www.xs650.com/forum/showthread.php?t=38879

read post #6
 
Pamco with the E-advancer is well worthwhile.

Stay with the stock alternator, as they work very well, and were high quality Japanese manufacturer. Buy a 3 phase rectifier from E-bay, and a NOS automotive VR-115 regulator.

Changing the tail light to an LED is a good addition to these bikes.

Don't get sucked in by all the marketing hype around a PMA.
 
Welcome, get it going and ride for a season or 2 before doing drastic changes, mods can be done on a rideable machine so down time is minimal.

All good advice from above.

buy a new battery, you may well find the indicators will work. old batteries are the cause of a lot of the XS's problems.

Some links from the Tech Menu and use Google search for information.

http://www.xs650.com/forum/showthread.php?t=10561
http://www.xs650.com/forum/showthread.php?t=18305
http://www.xs650.com/forum/showthread.php?t=9625
http://www.xs650.com/forum/showthread.php?t=18925&highlight=musings
http://www.xs650.com/forum/showthread.php?t=3272
http://www.dansmc.com/electricaltesting.htm
http://www.electrosport.com/technical-resources/technical-articles/how-motorcycle-charging-system-works
http://www.electrosport.com/technical-resources/technical-articles/motorcycle-stators
http://www.xs650.com/forum/showthread.php?t=30569

Mostly electrical ,and another real important thing to do is take apart and clean all bullet connectors, couplings and switches, (handlebars), and all grounds. Use a dielectric grease and reconnect. then do a complete continuity test as you reconnect joins to test for weak or broken wires in the harness.

To do this will give you an understanding of the harness and are reducing any resistance the bike, electrical components will work to their optimin and if you retain the original stator/rotor they will love you for this and work well for you.
 
Thanks for the welcome, folks!

TBH, I've been reading the forums for a little while so I know a lot of folks like to keep the stock alternator with a freshening. Given the sage advice in these responses, I'm going to stick with what I have currently - with the plan of going through some of the wiring with the tank off and cleaning things up (and adding some dielectric grease), freshening the tires, fluids and ignition to see where the bike stands. I'm going to dig into this weekend, assuming I can get the filters locally. I might need to find a place that handles motorcycle tires locally.

Thanks again for the links and advice! I know I'll probably be posting again after some long searches!
 
I kept my '79 stock, with the points ignition. Worked fine for a year or more.

Then one day, the points just crapped out. No warning, no gradual decline, just went out to start it and it ran like crap.

I decided to ditch the points and get a PAMCO. Problem solved, immediately and permanently. No fussing, no dicking around with feeler gauges and multiple attempts to get both sets gapped accurately and the timing consistent.

Just bolt it in, set the timing and forget it.

I'd never go back to fucking with points.

I do still have the original alternator. Fresh brushes and clean connections and all is good. I did add a voltmeter to the instrument cluster so I can monitor the output of the alternator and it's been flawless for 3 years now. It ain't broke, so I haven't fixed it. I did switch to LED turn signals and brake/tail lamp to help ease the load on the ol' gal, but that really isn't that much of a change over the incandescents.

I also upgraded to modern blade fuses in a quality fuse block which is the other major source of electrical woes. Again, no fuss, no muss.
 
I like the PMA setup because it doesn't have any wear parts(brushes). If your charging system is working now, just keep it maintained and enjoy it until you need to upgrade.
 
I would follow the advice of most posts above and focus on getting the bike running with the stock units first and then move on to improvements from there. The pamco/e advance was a great upgrade, but you'll want to make sure your carbs are clean and working well,, that air leaks are addressed, gaskets and brakes replaced as needed etc. Lots of basic work to probably get the bike up and running well before adding any extra complexity.

I got my bike and it would run, but front brake was stuck and it ran poorly. In the past year I've rewired it, upgraded to solid state rectifier vr115 regulator, new battery, cleaned all my grounds and handle bar controls, new brakes, new master cylinder, replaced many gaskets and seals, new chain, new sprockets, verified stator and brushes were in good working order, and probably out about 1000 miles on before moving to upgrade to the pamco w/e advancer. Not to say you need to do all of that first (or at all), but years of neglect or just plain use have likely left the bike in a state where there will be plenty to work on just to get the base platform on good ground.
 
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