What does this mystery screw do?
06-23-08, 09:10 PM
#1
SQL Error: table 'user'
Thread Starter
Join Date: Mar 2008
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
What does this mystery screw do?
My bike is new, and the handlebar is a Funn Fatboy. After going over a few minor bumps (nothing more than 8-9 inches high) I heard a noise like something rolling around inside the bar. So I pulled out the plug at the end and found a loose screw inside about 1.5 inches long that takes a 3mm allen key. Looking inside the handlebar with a flashlight, I can see where the screw fits, but I don't have an allen key long enough to put it back in. And I have no idea what it does; it fits in almost right where the bar bends downward towards the stem, but from the outside the handlebar looks like it's all one piece. This is in the right side of the handlebar. The left side does not have the same thing inside and just looks hollow all the way past the "bend".
Anyone know what the screw holds or should be holding, and if it's important?
Anyone know what the screw holds or should be holding, and if it's important?
06-23-08, 11:38 PM
#3
SQL Error: table 'user'
Thread Starter
Join Date: Mar 2008
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Understood. Unfortunately, a real photo wouldn't help, since the piece that receives the screw is several inches inside the handlebar and I can't really take a picture of it. So what I've done is make a crude drawing. Please excuse my childlike image editing skills.
fatboy_screw.jpg
1. The full handlebar
2. A zoomed in segment where the piece that receives the screw is located. Just imagine the pale part being an invisible part of the bar allowing you to see inside. (Green: the piece inside that receives the screw. Black: screw hole. Red arrow: the direction the screw would take when in place.)
3. What you see looking into the end of the handlebar. (Grey: inside of handlebar. Green: the piece inside that receives the screw. Black dot: screw hole.)
... this is ridiculous. This drawing probably isn't going to explain anything. I think I'm making too big a deal out of a screw.
fatboy_screw.jpg
1. The full handlebar
2. A zoomed in segment where the piece that receives the screw is located. Just imagine the pale part being an invisible part of the bar allowing you to see inside. (Green: the piece inside that receives the screw. Black: screw hole. Red arrow: the direction the screw would take when in place.)
3. What you see looking into the end of the handlebar. (Grey: inside of handlebar. Green: the piece inside that receives the screw. Black dot: screw hole.)
... this is ridiculous. This drawing probably isn't going to explain anything. I think I'm making too big a deal out of a screw.
06-23-08, 11:48 PM
#4
Full Member
Could it be part of the plug? Some handlebar plugs screw in with an expander. What's the other side look like?
06-24-08, 01:50 AM
#5
SQL Error: table 'user'
Thread Starter
Join Date: Mar 2008
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
That's the funny thing. The other side is hollow (at least as far down the tube as I can see). I might ask at my LBS, or email Funn and ask if their handlebars are made in multiple pieces, but that seems doubtful.
06-24-08, 02:32 AM
#7
SQL Error: table 'user'
Thread Starter
Join Date: Mar 2008
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
You know what? No one else waste their time on this. I'm beginning to think more and more that it's something that got wedged in there by accident. I don't know how; like I said, it's new. Anyway, should I find out what it is, I'll repost just in case (I doubt it) anyone else encounters something similar.
06-24-08, 05:26 AM
#8
Senior Member
Join Date: May 2007
Posts: 703
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I bet whoever put the bike together stuck the screw down in there just to cause confusion... 
It does sound like an expander plug sort of deal, though...but since there's only one...it doesnt make sense at all.
It does sound like an expander plug sort of deal, though...but since there's only one...it doesnt make sense at all.
06-24-08, 05:54 AM
#9
Prefers Cicero
Perhaps they put some type of vibration dampening expansion plug in there,
