[RBW] Re: thump thump of supple tires

2014-10-21 Thread Johan Larsson
If you can see a hop when spinning the wheel you should be able to locate that spot when it's still as well, in some way, and take a closer look. Maybe the inner tube is creased/folded? Slow the rotation gradually, or mark the tire with a piece of tape, moving it until it lines up with the

Re: [RBW] Re: thump thump of supple tires

2014-10-21 Thread Eric Norris
You didn’t say what kind of rims/tires you’re using, but I’ve found Jan Heine’s advice about rims without adequate interior “support” to be helpful. I have Grand Bois Hetres on Velocity rims (Dyad and Synergy), and on both it helped to put to layers of rim tape inside. The tires mount

Re: [RBW] Re: thump thump of supple tires

2014-10-21 Thread Mike Williams
Thanks everyone for the suggestions! I think Eric nailed it, I read the Jan Heine article, im gonna add some extra rim tape and see if that helps. Yahoo! Sent from my iPhone On Oct 21, 2014, at 1:15 PM, Eric Norris campyonly...@me.com wrote: You didn’t say what kind of rims/tires

Re: [RBW] Re: thump thump of supple tires

2014-10-21 Thread Mike Williams
Youre right, Rim is Velocity Synergy, tire is Panaracer made SOMA Cazadero 700x42 Sent from my iPhone On Oct 21, 2014, at 1:15 PM, Eric Norris campyonly...@me.com wrote: You didn’t say what kind of rims/tires you’re using, but I’ve found Jan Heine’s advice about rims without adequate

Re: [RBW] Re: thump thump of supple tires

2014-10-21 Thread Eric Norris
I used a slightly wider tape for the second (top) layer. The first layer fits down into the slot above the spokes, the second does a better job of filling in the gap between the top of the rim and the bottom. --Eric Norris campyonly...@me.com www.campyonly.com campyonlyguy.blogspot.com On Oct

Re: [RBW] Re: thump thump of supple tires

2014-10-21 Thread Bill Lindsay
I do similar to Eric. My secret weapon is Gaffer Tape. It's tough canvas like rim tape. It's removable, and you can rip it lengthwise to whatever width you want, similar to duct tape. A good roll of gaffer tape at your hardware store might be $25, though. It's probably enough for 30 rims.

Re: [RBW] Re: thump thump of supple tires

2014-10-21 Thread Michael Williams
A-Ha! The extra layer of rim/ handlebar tape was the trick!Thank you Eric for suggesting that and directing me to Jans article, totally makes sense, and thanks to everyone else for their ideas, no more thump-thump!-Mike On Tue, Oct 21, 2014 at 5:15 PM, Bill Lindsay

[RBW] Re: thump thump of supple tires

2014-10-20 Thread Iron Rider
I had a regular thump thump in a 650 B supple tire. But it went away when the supple sidewall had an explosive blowout. I have since used hypetex (kevlar) reinforced sidewalls. You may want to check the integrity of your sidewalls for any signs of delamination. -- You received this message

[RBW] Re: thump thump of supple tires

2014-10-20 Thread Michael Hechmer
Wow, I've been waiting to post this topic, and here it is! A couple of weeks ago I heard a slight thump and felt the vibration on a hi speed descent (35+ mph) on what looked like smooth pavement. I checked the rim it looked reasonably true and round but thought the brake might have been

[RBW] Re: thump thump of supple tires

2014-10-19 Thread Bill Lindsay
The thump is the hop and the hop is the thump. If it's your tire that has a hop in it, it will hop on any rim. Another way to test it is mark the hop in some way. Mark the sidewall of the tire at the hop and put a piece of tape on the rim at the hop. Then remove the tire and re install it