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Author Topic: My first bike, the 1974 XL100  (Read 3534 times)

Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #30 on: Jun 29, 2016, 23:10:53 »
I hear you, budlite. Once I embark on a project I'm in it to the end, but sometimes there's a lot of inertia to overcome getting started. We need to find somebody else to do the busy work so we can focus on the bikes.

This afternoon I found some time to change the XL's oil again, bolt on a taillight I picked up earlier this spring, bend the bars and shift lever back into shape, and get started polishing the copious rust off the chrome. Arriving next week are new tires, mirrors, and random stuff like a rear brake light spring and kicker rubber. I have my fingers crossed Cb2hunnit comes through with the signals!


Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #31 on: Jul 09, 2016, 19:22:36 »
I applied for an antique plate and registration at AAA last week. The agent who took care of the paperwork told me the current processing time at the PA DMV is about five weeks.


Offline djmaynard

  • Posts: 187
Re: My first bike, the 1974 XL100
« Reply #32 on: Jul 10, 2016, 20:00:27 »
That was my very first bike as well. For my 10th bday my parents got me that XL sold it 15 years later and wish I hadn't. Great to see one up and running!

Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #33 on: Jul 28, 2016, 18:54:58 »
That was my very first bike as well. For my 10th bday my parents got me that XL sold it 15 years later and wish I hadn't. Great to see one up and running!

Thanks. I got mine at about the same time. It was always "my dad's" (until now), though I rode it far more than he did (and chances are, when he was riding it, I was, too, sitting on the tank before I could ride it myself).

On a related note, it's unclear why my 6'4" 200+ lb dad picked a 100. I'll have to ask him about that. I'm just glad it was a four-stroke, as cool as ring-a-ding-dingers are.

Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #34 on: Jul 28, 2016, 20:27:36 »
PA got me the tag in a jiffy! (Less than a month.) Hey, slow down there, PA! You're making all the other states look bad.



Since it's so hot right now I've decided to forgo riding the CL in favor of getting the XL road-worthy. What better to do in 95-degree weather than warm up new tires before mounting them?



This time I used a nice set of three 11" spoons. The tires went on really easily. I think I made a mistake with the front, though. Stock-size trials are hard to find for the XL's 17" and 19" rims, so I went up 1/4" in width on both and got matching Duros from Cedar Rapids. After a couple new-tires-and-plate victory laps around the hill, the front still feels a little clumsy, so I ordered a Shinko trials to replace it. Both were about $30- not a big deal but disappointing. Hopefully the Shinko is better.


Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #35 on: Jul 30, 2016, 10:02:55 »
According to my dad, he only weighed 185 in '74. He's eaten a lot of Tastykakes since then.

I'm down to my fighting weight of 145, which works pretty well on these small-displacement machines but is still probably 50 lbs heavier than when I first learned to ride this bike. It must have really hustled with me on it back then.
« Last Edit: Jul 31, 2016, 10:08:09 by iatethepeach »

Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #36 on: Jul 30, 2016, 10:47:42 »
I was psyched to ride after mounting the new tires. Since I got it running, the bike has started with slight pressure on the kicker, but this time it wouldn't go. Rather than looking for the source of the problem, of course, I put a big gash and lump on my shin kicking in frustration. Having banged and burned myself regularly on the bike as a kid, I had to laugh. An old rim strip was handy treating the wound.



Disassembling and cleaning the carb didn't help this time. My new e-packet delivery DMM was sitting in the sun for an hour or so, and not only did the decal around the dial shrink a few mm, but the interals suffered, too. $3.39 w/shipping from China was too good to be true.



Fortunately, shaking and squeezing the meter got me a few seconds of use before it'd go haywire again, and I eventually traced the problem to the kill switch. I'll take it apart and clean the contacts soon, but since there was already an open ignition-power female in the bucket and I wanted to ride, I just bypassed it for the moment.

« Last Edit: Jul 31, 2016, 10:14:12 by iatethepeach »

Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #37 on: Jul 30, 2016, 11:00:06 »
On my first trip, the motor missed quite a bit at higher RPM. I set the point gap and reset the timing, then replaced the points, neither of which helped. I finally installed a new spark advancer (I bought a spare when I placed the order for the CL). The old advancer seems to move freely, but after I put the new one in the bike ran a whole lot better.



It's still weak at higher RPM, though, and seems to be getting worse as the fuel level drops. I'm hoping changing the gasoline and maybe installing a new plug will do the trick. Here are shots of the plug (a D8EA) from before and after my ~45 minute ride:





Sorry about the crap auto white-balance on my phone.
« Last Edit: Jul 31, 2016, 10:17:06 by iatethepeach »

Offline iatethepeach

  • Posts: 509
Re: My first bike, the 1974 XL100
« Reply #38 on: Jul 30, 2016, 11:04:24 »
Here's a question- should I hold the throttle open when I check compression? It makes a big difference- around 40 psi.


Offline advCo

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Re: My first bike, the 1974 XL100
« Reply #39 on: Jul 30, 2016, 11:49:32 »
Plug looks good to me. And yes you should hold the throttle open when you run a compression test, it is also supposed to be done with engine at operating temp for most accurate reading. Have you replaced or checked the coil? Spark could be breaking down at higher RPM


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"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0