so you just randomly tightened all the spokes 1/2 turn? without first checking to see if any of them were noticeably looser than the rest? you probably didn't mess anything up by just doing a 1/2 turn, but if any of them were loose enough to make noise, that 1/2 turn probably wouldn't do a thing to stop it.
it could be many things, but if you think it's coming from the rear wheel you check a few...
valve stem moving around?
valve stem locknut used? is it loose?
possibly a piece of metal left over from drilling the spoke holes in the rim rattling around?
is it once every wheel revolution or once every pedal revolution?
i would refrain from randomly tightening things unless you know for sure they're the cause. is the wheel still true/round after the 'adjustment'?

 

I'm inclined to think something rattling around in the rim.

Take the wheel off and shake it a bit, hear anything?

 

It could be something as simple as the spokes settling into the new tension you applied, they will do that for a little while till all of them have settled in.

I don't think a 1/2 a turn bothered anything unless their bladed spokes and you didn't keep the bladed spokes from twisting as you adjusted the spokes that 1/2 turn. If you have bladed spokes then you're going to have to take the wheels in for readjustment seeing you don't have a clue as to what you're doing. I don't mean that as an insult, but if the wheels were good, or out of true slightly you don't just tighten all the spokes the same. So do yourself a big favor that could save the life of the wheels and take them in and tell the LBS guys what you did so they understand what their dealing with.

Also a lot of modern low spoke rims are set at high tension levels, and due to the rims only able to take so much tension they use a tensionmeter to adjust them, if you have over tweaked them you could ruin the rim over a period of time by continuing to ride on them. Low tension rims have more spokes and they are pretty tolerant of being slightly over tightened.

There are all sorts of video's on You Tube that can show you how to adjust rims, before you do that again make sure you watch those video and read stuff on the internet how to true a rim. A lot of modern low spoke rims are set at high tension levels and due to the rims only able to take so much tension they use a tensionmeter to adjust them, if you have over tweaked them you could ruin the rim over a period of time by continuing to ride on them.

 

Apparently all you guys think I am a total idiot. The wheel was making the sound from new, and still made it after the tensioning which has been over 1000 miles ago.
I know how to true a wheel as I've done it many times on both my road and mountain bikes. I'm also aware as a wheel breaks in the spokes can stretch and settle into the wheel and require further tensioning. In making the 1/2 turn on all the spokes , i also did it as two 1/4 turn adjustments in two rounds around the wheel. Just wanted to let everybody know that there were no obvious loose spokes during this procedure.

The wheel was as true as an arrow and is still without any sign of being out of true in any way. The funny thing is it does not make the noise unless there is weight on the wheel. turn it in place and no sound. This is why i don't think it is the loose nipple inside the wheel.

Also the wheel does not have bladed spokes and it is not a low spoke count wheel as it has 36, thus the comment on super high tension low spoke count wheels are not appropriate for my case.

 

I had some wheels built, and the guy who built them must have dropped a brass nipple inside of the rear rim, as it clinks when the wheel rotates. If I go fast enough, it goes away... Could that be it?

 

that could definitely be it. what kind of rim is it?

 

I have noticed that I have a very strange sound coming from my rear wheel...

Sadly, this thread didn't measure up to the preview in the forum view.

"Strange sound from my rear..."

:-(

 

did you take the wheel off & shake it yet?

 

OP, the sound you're describing is common after truing a wheel and then riding it around. It makes that sound for a few minutes while the spokes settle but goes away and I can't imagine why it would show back up at the beginning of every ride.

 

The wheel has 1000 miles on it since I touched the spoke tension. Same sound before and after the tensioning. Shook the wheel all around no noise. Spin the wheel slow and fast while not riding, no noise. Only noise when I ride the bike and then only for the first 3-6 miles. Also have eliminated the nut around the valve stem. Tigtened it real TIGHT even took it off, same noise.


Sounds strange doesn't it.