Suggestions.......Wheel Building....

[oldpotatoe]

Originally Posted by weisan

as always, found this excellent review from my pal 22.8/2 in another thread...

http://forums.thepaceline.net/showpo...2&postcount=28

Good recap and w/o beating this to death. Most recent A23 rims, IMHO, build well, straight, round, with even tension. You can tell a lot about a new rim when you build it. In that, is it 'easy', 'no issues' or is it a PITA. Older, early production A23, right after they moved production from Australia to Florida, were poor..latest gen ones(and Major Toms) built very well.

[weisan]

I would be remissed if I don't mention the part that I am most excited with, more so than a successful wheel build, is the ability to now install the tires on the newer Pacenti rim with.... Listen to this, ladies and gentlemen!...with my BARE HANDS !!!!

To be frank, I have always been a big fan of Kirk, the quality products that he brought to market, his business ethics... but the last time when I had a set of SL 23 , I was less than impressed with the tire installation process, granted many folks have chimed in with great installation technique/advice... BUT... really when it comes down to it, if you have a flat and you are in the middle of nowhere, the last thing you want to remember is the password to the secret cave "Open Sesame"... It should be a relatively uneventful AND painless activity when it comes to flat fixing and tire changing.

So, yeah, big " hi-5" to my pal Kirk for acknowledging the issue and not just fixing it, but making it even better. I don't recall that many wheels I got that i can install with bare hands, most require a lever at least near the end to give it that extra boot.

Great job, Kirk!
This coming from your lifetime fan.

P.S. in my excitement last night, I installed the tire first, by forgetting about the rim tape, this is what I found when i checked back in the garage early this morning.

[weisan]

Wheel #2 Completed:

Pacenti SL23 28h
DT 350 hub
Sapim Straight 14g spoke
Brass nipples

Again, can't reiterate enough, use quality rims, that makes the build easy breezy...: D

[oldpotatoe]

Originally Posted by weisan

Wheel #2 Completed:

Pacenti SL23 28h
DT 350 hub
Sapim Straight 14g spoke
Brass nipples

Again, can't reiterate enough, use quality rims, that makes the build easy breezy...: D

Huzza!!

[weisan]

Bull's Eye!

[weisan]

Originally Posted by oldpotatoe

Huzza!!

Thank you, Master!

[weisan]

Mounted and ready to go for its first ride.

[weisan]

.

[batman1425]

When you say bobble, do you mean the tire is not completely seated and has a bulge somewhere, or the whole rim is out of true with a tire installed, but fine without?

Inflating the tire may detention the wheel slighty, which could allow it to go out of true, but only if the tension is low to start with.

[weisan]

ok, I am totally confused now.

Scenario #1:
Pacenti 32h - brand new CG Pave 27 - ride ok
Pacenti 28h - "old" CG Pave 27 - ride not ok, bobbles up and down.

Scenerio #2:
Pacenti 28h - old Continental 4000s II - ok
Pacenti 28h - brand new CG pave 27 - ok

Scenerio #3:
Pacenti 32h - old CG Pave 27 - NOT OK - bobbles up and down

Here's the part that I don't understand.

This "old" CG pave 27 had about 500 miles on it. I have ridden it in Ft Davis for 75miles and came home rode for another 5-6 rides, ALL using a non-pacenti wheelset and it's been fine the whole time.

Now, I mounted it on the new 28h Pacenti and it was having "bobbling" issues.

At first I thought it was the wheel. So I tried it on the 32h Pacenti, it was having the same issue.

The question is: why wasn't the old pave 27 giving me issue prior to mounting them on the Pacentis???

[weisan]

Originally Posted by batman1425

When you say bobble, do you mean the tire is not completely seated and has a bulge somewhere, or the whole rim is out of true with a tire installed, but fine without?

Inflating the tire may detention the wheel slighty, which could allow it to go out of true, but only if the tension is low to start with.

bat pal, this: the tire is not completely seated and has a bulge somewhere.

[batman1425]

Sounds like a cut in the threads somewhere making a bulge.

Could be that you just didn't notice it till the move, or perhaps there was a small damaged spot that was made worse by the removal and installation from one wheel to another?

I'd inspect the spot of the bobble closely for damage.

I had this happen once with an older set of continental tires. The rubber around the bead was getting beat up from installation and removal and peeled off in a few spots. After that, whenever I mounted it up, the bead wouldn't sit right in those areas and it would present as a wobble or bulge. I ended up just tossing it. Not worth a broken collar bone or dental work from a crash.

[Hindmost]

Originally Posted by oldpotatoe

Now, after a while, to test your mettle with wheelbuilding..use an old hub, used, light, tubular rim(like Fiamme Yellow-DOH), thin spokes and not enough of them..

Funny, I had been reading this thread backwards, saw the praises for flat, round, hard rims, and was thinking something exactly like this. In the bad-old-days you could chase around rim wobbles trying to true the rim flat, and round. Good luck with even spoke tensions.

Once finished, you could then take a hammer to the rim joint to flatten it and eliminate brake pulsing.

[weisan]

physical inspection checks out fine. I installed it on another wheel (Shimano RS80), in fact, it was the original wheel that I took it off to mount on the Pacenti in the first place...and even there, it looks fine....hmmm...which leads me to believe that it wasn't seated properly on the Pacenti...but why? I didn't do anything special when it comes to installing on the RS80?

[weisan]

>>Now, after a while, to test your mettle with wheelbuilding..use an old hub, used, light, tubular rim(like Fiamme Yellow-DOH), thin spokes and not enough of them..

Old pal, I think I may already have one in the garage...is the set of old tubular wheels that came with the old steel Bianchi that I bought to do a 650b conversion two years ago. It's been sitting there in the corner. After you mentioned it, I picked the front wheel up between the spokes to examine and just doing that I broke a spoke, very brittle. The tubs on it are already flaking and breaking apart, even the QR is old-school skewer, I can only imagine how old it is...but other than the spokes. the rim seems in fairly good condition.

The label says, Sun Mistral...and it has a warning sticker that says. For Race Use Only.