Author Topic: Hey Karl - valve stem out - good time for dynabeads now?!  (Read 310 times)

Stig / Major Tom

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Hey Karl - valve stem out - good time for dynabeads now?!
« on: June 25, 2021, 07:05:00 PM »
Karl, I bought two bags of dynabeads months ago -  to use whenever I had the new Angels mounted.
But, talking with the service guys at time of tire change - they both said they had no idea what I was talking about.
So, I still have them.
So, while I have the stem out - wouldn't it be a good time to pour in the 2oz. recommended for my scooter?

BTW - probably going with a COLBY valve stem - which can be installed from outside the rim. A couple of off-road bike riders on the Vespa forum PM'd me to say they use them with good results....as a "permanent" fix to ripped off stems.
If I don't use the dynabeads I'll add a small wheel weight to the other side of the rim.
Stig



« Last Edit: June 25, 2021, 07:23:18 PM by Stig / Major Tom »
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Ruffus

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Re: Hey Karl - valve stem out - good time for dynabeads now?!
« Reply #1 on: June 25, 2021, 07:57:35 PM »
Looks good to me. Didn't know. But good to know.
Happy and safe scootering, Ruffus

stuo

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Re: Hey Karl - valve stem out - good time for dynabeads now?!
« Reply #2 on: June 25, 2021, 08:33:15 PM »
I replace stems without removing the wheel or tire. I squeeze the tire by the stem with a large C-clamp until the tire pops off the bead shoulder on one side, reach in and remove the stem base after cutting off the stem top flush with the rim.

I have yet to balance any of my scooter wheels and have not noticed any vibration, shimmies or weird wear as a result, despite riding at 70mph regularly. Have I just been lucky? Has anyone out there had problems with an unbalanced scooter wheel? 17" wheels on full size motorcycles definitely need balancing but scooter wheels, not in my experience.
2009 GV 250

CROSSBOLT

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Re: Hey Karl - valve stem out - good time for dynabeads now?!
« Reply #3 on: June 25, 2021, 09:16:16 PM »
Karl, I bought two bags of dynabeads months ago -  to use whenever I had the new Angels mounted.
But, talking with the service guys at time of tire change - they both said they had no idea what I was talking about.
So, I still have them.
So, while I have the stem out - wouldn't it be a good time to pour in the 2oz. recommended for my scooter?

BTW - probably going with a COLBY valve stem - which can be installed from outside the rim. A couple of off-road bike riders on the Vespa forum PM'd me to say they use them with good results....as a "permanent" fix to ripped off stems.
If I don't use the dynabeads I'll add a small wheel weight to the other side of the rim.
Stig





Now is definitely the time! Be advised Dyna Beads will have a lot of black rubber dust when you replace the tire. That is not a worry! They won't eat through the casing before replacement is necessary.

As you know, I am using BB's but the next time think will use airsoft balls. Have seen pictures and videos of tire casings and rims that looked super clean with no rim peening of BB steel shot. Airsoft are quieter rolling around the garage and driveway! Not that any of these are real drawbacks.

Love the idea of those valves! That has to be THE idea of the 22nd century!
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

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