Injecting foam into clip-ons?

[jagstang]

Now that is interesting.  And to think, I needed to pay the bike shop a visit in the near future anyhow.

If you get them, try this:
Drop your bar on the ground without them, it'll bound a lot and make a bunch of racket.
Put 'em in and drop the bar again.  You'll see what I'm talking about.

I tried them in a road bike, and now they're in my monster

[VisceralReaction]

I just used plain old #7 bird shot and filled up my clipons, worked really sweet and easy to do.

[DRKWNG]

How heavy was that? 

[oppet]

Try filling them with sand. I used onekind of glue, it worked little. But more mass in there would help more like someone sayed

[NAKID]

Is there anything you can use that wouldn't add significant weight?

[oppet]

If it aint got no weight theres no wanted effect. Just loose some weight, eat carrots or take unused air out on top of the tire 

[hypurone]

Is there anything you can use that wouldn't add significant weight?

The "liquid" barsnake is still the best option I have used. IMHO. YRMV.

[NAKID]

If it aint got no weight theres no wanted effect. Just loose some weight, eat carrots or take unused air out on top of the tire 

Obviously there would be SOME added weight, but I don't feel like adding 5lbs of lead into each bar.

I was thinking of something like liquid silicone caulking...

[oppet]

yup thats what I did. tube of glue, that feels like rubber. Little change but not much. Maybe if you get some good grips there?



Edit.. And now I would like to test sand in there, BUT I would have to get the glue out first.

[rgramjet]

For some reason I picture sand weakening the bars over time.  If it can scratch glass, it can wear away aluminum fast.  Lead is very soft and not abrasive at all.

[scott_araujo]

My old bike had really nasty high frequency vibes.  I filled the bars with a tube of silicon caulking and it made a big difference.  Adding anything squishy or heavy to the inside of the bars does several things:
1) damp vibrations by being less rigid than metal bars
2) increase mass to change the harmonic frequency
3) increase mass to lower how much the bars actually vibrate.

This was on a regular set of tubular bars though, I don't know that it would do much on clipons because there's much less space to fill and they are so short and rigidly attached to the bike.  As already mentioned, foam would keep them from ringing audibly but probably wouldn't do much for how they feel.  If you want to try it Great Stuff is polurethand foam in a can and available at most hardware stores for about $6.  Unbleievable messy before it dries.

I'd recommed either some Pro-Grip gel grips, silicon caulk or barsnake in the bars, and/or really heavy bar end weights.  Not the lame little aluminmum ones, sometheing hearty like the Throttlemeister end wieght or ones off a ninja 500.  Those Bontragers are really slick.  Even though they're a bicycle part they'd be worth a try.

As to the weight, don't worry so much.  It doesn't matter how light your bike is if it's unconfortable to ride.

Scott

[RandyFloyd]

Ordered some eDead last week.  I was planning to pour it in my bars.  Dynamat discontinued the spray can and the smallest you can get is 1 gallon for around 80.  Anyone use any car audio sound deading products? results?

http://www.edesignaudio.com/product_info.php?t=3&products_id=451

[VisceralReaction]

How heavy was that? 

I am not sure how heavy it actually was, i wouldn't think a whole lot more than the bar end weight.
I would have to dump out the clipon and weigh it  to even guess
The vibes went to nothing though.

[Monstermash]

Ordered some eDead last week.  I was planning to pour it in my bars.  Dynamat discontinued the spray can and the smallest you can get is 1 gallon for around 80.  Anyone use any car audio sound deading products? results?

http://www.edesignaudio.com/product_info.php?t=3&products_id=451

I don't think this is going to give you the effect your hoping for. I've used the Dynamat stuff for years when I was doing high end custom car audio and it works great on a thin piece of metal like the inside skin of a door but I'm not so sure about using it for this application.

Let us know how this works out.

I would go the lead route myself. Yeah it's going to add a little weight but you'll never notice it.

[printman]

My old bike had really nasty high frequency vibes.  I filled the bars with a tube of silicon caulking and it made a big difference.  Adding anything squishy or heavy to the inside of the bars does several things:
1) damp vibrations by being less rigid than metal bars
2) increase mass to change the harmonic frequency
3) increase mass to lower how much the bars actually vibrate.

This was on a regular set of tubular bars though, I don't know that it would do much on clipons because there's much less space to fill and they are so short and rigidly attached to the bike.  As already mentioned, foam would keep them from ringing audibly but probably wouldn't do much for how they feel.  If you want to try it Great Stuff is polurethand foam in a can and available at most hardware stores for about $6.  Unbleievable messy before it dries.

I'd recommed either some Pro-Grip gel grips, silicon caulk or barsnake in the bars, and/or really heavy bar end weights.  Not the lame little aluminmum ones, sometheing hearty like the Throttlemeister end wieght or ones off a ninja 500.  Those Bontragers are really slick.  Even though they're a bicycle part they'd be worth a try.

As to the weight, don't worry so much.  It doesn't matter how light your bike is if it's unconfortable to ride.

Scott

Am having a problem with a ringing at riding speeds right at 4500-5000, was there a certain silicone you used or just everyday silicone caulk?

Using the tomaselli's on a 900SS they are lighter than the steel units and are killing me after 20 miles.

Are the Progrips that good? was hoping to get a review before ordering