Got my new tire installed and went to add these via the valve stem. These created a non removable clog so now it looks like i must remove tire to install new valve. Do these work better with a particular type?...
As I posted - use a short "blast" of air into the 'clog' and they'll go in.
I'm personally skeptical of the dynabeads. I don't think you can feed them in through the valve stem easily....
See above remark.
...They aren't reusable from what I hear, and they make a mess when they get spilled....
I buy mine in bulk from a supplier for about $5 a pound, and, from time-to-time I HAVE re-used them.
...One guy told me there were rubber balls left inside his tire from using them - from inner carcass wear....
I've used them for OVER 60,000 miles, in MANY sets of tires. NEVER had rubber balls as you mention.
...I think they cost more than weights, too? I do frequent tire changes for the track and don't want to be bothered with the cost or the mess....
Around $5 a pound? At 1 oz for the front tire, 2 oz for rears - about a BUCK per set, AND they CONSTANTLY balance the wheel as you ride.
...A big thumbs down for the Dyna beads...I was under the impression, please correct me if I am wrong, that a valve stem must be installed from the bottom with the tire removed.
IMHO you've not given Dyna Beads a fair trial, and - YES - stems are installed from INSIDE.