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CB350 — Rebuild and Functional Restoration

I pinched my inner tubes a couple of times, but thankfully I'm used to patching bicycle tires. Finally got both on, and the new brakes bedded in and installed, last night. Everything seemed good today, and I went out for a bit of a ride, then stopped by work for a pizza party that was going on. Came out to find my back tire flat.

Seems I had the valve stem positioned well enough that it was fine at first, but with just enough side load against the rim hole, I guess, that it sprung a leak after some riding. At least it happened at a place I can safely leave it and where I had a ride home! I should've gotten spares, but I will now...
 
I've followed your post but have been silent... sorry. It's a great post & you've done an amazing job.
I break my silence just to offer my "That exact thing has happened to me". All the work of getting an inner tube into a tire.. all seems well... and now it's flat from a barely perceptible issue.
Hope the Pizza was good.
 
I couldn't find any actual talcum powder, but modern corn-starch baby powder seems to make things similarly slippery... Definitely put plenty in there. Having read up on it more now though, I think I did the nuts wrong — I put one below the rim and one on top, tightened down. It seems general consensus (to the extent that there is one) for road tires is both on top, the first one just finger-tight, and the second locked against it? I'll have to try that next time.

My boss was nice enough to let me leave the bike indoors at the shop. I couldn't find the right inner tubes locally, so I ordered two new rear and one front, thinking I'd have a spare of each that way.

I was just notified today that, after two days, the front tire has also gone flat. It's kind of wild that the freaking inner tubes seem to be giving me at least as much of a hassle as the entire engine rebuild.
 
I noticed I was missing the cotter pin that's supposed to go on the front brake arm clevis, as insurance for the end of the cable staying in. Do I just... pick any of these seven options, I guess? Two of them appear to be identical, including in their photos, other than one saying "split" and the other "cotter".

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CrazyChucky said:
I noticed I was missing the cotter pin that's supposed to go on the front brake arm clevis, as insurance for the end of the cable staying in. Do I just... pick any of these seven options, I guess? Two of them appear to be identical, including in their photos, other than one saying "split" and the other "cotter".

View attachment 47093
Click to expand...
Any cotter pin that fits is fine.
 
I've had quite a few bad valve cores in new tubes. I always inflate my tubes and let them hang out for a day to test and relax the wrinkles before mounting.
My 40 year old bottle of Johnson's baby powder is now illegal, due to some imagined cancer risk. I hope you can still buy Anti Monkey-Butt Powder (mostly talc) on amazon. A bag of replacement Schraeder valve cores is also cheap on amazon.
I may not be able to hold my breath for long, but my tubes can.
 
CrazyChucky said:
I pinched my inner tubes a couple of times, but thankfully I'm used to patching bicycle tires. Finally got both on, and the new brakes bedded in and installed, last night. Everything seemed good today, and I went out for a bit of a ride, then stopped by work for a pizza party that was going on. Came out to find my back tire flat.

Seems I had the valve stem positioned well enough that it was fine at first, but with just enough side load against the rim hole, I guess, that it sprung a leak after some riding. At least it happened at a place I can safely leave it and where I had a ride home! I should've gotten spares, but I will now...
Click to expand...
I've done lots of gravel and road bicycle racing so I've changed lots of bicycle flats too. I've only had one motorcycle flat in my life though and it was much more impressive because of the weight of the bike and it being much harder to change.

It's worth reading this string because it's got lots of helpful info. https://www.vintagehondatwins.com/f...-rear-tube-stem-ripped-out.11483/#post-142178

Keeping an eye on the tire pressure and valve stem rotation is really important on a motorcycle.
 
Took me most of the day yesterday, but I got both inner tubes replaced and so far they're good!

IMG_2512.png IMG_2513.png

Safely back home yesterday evening! (The fireflies and I both love the flowering chicory, but even so I should probably do some trimming.)

IMG_2514.png

Rode around some more today — tires are still good, and I'm slowly getting less rusty at riding. Still need to take a decent video.
 
CrazyChucky said:
Took me most of the day yesterday, but I got both inner tubes replaced and so far they're good!

View attachment 47231 View attachment 47232

Safely back home yesterday evening! (The fireflies and I both love the flowering chicory, but even so I should probably do some trimming.)

View attachment 47233

Rode around some more today — tires are still good, and I'm slowly getting less rusty at riding. Still need to take a decent video.
Click to expand...
Great to hear you can ride it again! Bike looks nice. I like your color. Is it all basically stock?
 
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