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American Classic 420 Aero

Old 04-19-12, 07:58 PM
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American Classic 420 Aero

Just got a Specialized Langester Pro, that came with some American Classic 420 Aero wheels.

I'm having an issue securing the rear wheel. It has a bolt that an 8mm hex wrench is supposed to fit... However my Park Tool basic hex set does not fit this properly. A guy running my local track advised me to go to a hardware store and find threaded 15mm bolts to replace the 8mm hex/bolts that came with the bike.

Last time at the track I thought I got it tightened down properly with my park tool hex. However today, after riding about 10 minutes of laps, I took a break to adjust my seat and got back on my bike... 50m down on the track and my rear wheel came loose.

I went into the track's shop and discovered a pedro's 8mm wrench, that fit like a glove. Hopefully next time I go to practice my wheel won't come loose.

In short, my question is should I try and get a 15mm bolt, or just tinker with the 8mm?
This sounds a bit obscure and pictures may be in order... next time I go to the track I'll take some.
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Old 04-20-12, 10:21 AM
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Multi tools usually dont have the highest quality parts. They are a convience tool. Similiar to the way a hand pump can work in a pinch, but you really want to use a floor pump. My advice would be, if you can, spin off the 8mm bolt and take it to your local hardware store, and find a nice high quality hex wrench for it.
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Old 04-20-12, 05:48 PM
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non-metric

I believe the bolts are SAE.

edit: my bad.

Strong track quality bolts are 3/8” x 24 Tpi and work with an easy to use 8 mm allen key socket head.

https://www.amclassic.com/en/products/hubs/trackrear.php

Last edited by Soil_Sampler; 04-20-12 at 05:51 PM. Reason: half wrong!
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Old 04-24-12, 11:40 AM
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I agree.

Whatever you choose, you need a good long arm on the wrench in order to tighten it down properly. Think of how long a wrench for a 15mm nut is. If you use hex, it should be similarly as long in order to tighten it down with the same torque.

Originally Posted by Kayce
Multi tools usually dont have the highest quality parts. They are a convience tool. Similiar to the way a hand pump can work in a pinch, but you really want to use a floor pump. My advice would be, if you can, spin off the 8mm bolt and take it to your local hardware store, and find a nice high quality hex wrench for it.
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Old 04-24-12, 08:50 PM
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Thanks guys!
Turns out that my 8mm (stand alone) hex from park tool was just a bit too rounded. The park tool hex from another rider's multitool worked like a charm.
I think I'll order a pedro's 8mm hex wrench.
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Old 04-24-12, 09:15 PM
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An 8mm wrench from your favorite hardware store will be cheaper, and work just as well.
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Old 04-24-12, 09:31 PM
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I hate the bolts on my set ( came with my Jamis Sonik. ) I'm actually considering selling the wheelset altogether
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Old 04-27-12, 06:25 PM
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Am Classic

Originally Posted by BrainInAJar
I hate the bolts on my set ( came with my Jamis Sonik. )
I'm actually considering selling the wheelset altogether
Bolts are easily replaced.
The old style bolts and serrated washer sux, new ones are better.



bolt on cog.

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Old 04-30-12, 11:22 PM
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You could try an 8mm pedal wrench. They're built longer to give you more leverage to get stuck pedals off. The same will help to get your wheels tight. something like https://www.pedros.com/hexpedaldriver.htm or the park HT-8. I can't seem to get to the park tool page right now.
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Old 05-06-12, 08:45 AM
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Originally Posted by BrainInAJar
I hate the bolts on my set ( came with my Jamis Sonik. ) I'm actually considering selling the wheelset altogether
They are nice wheels...
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