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 Post subject: What stretches spokes?
PostPosted: Fri Sep 29, 2017 8:08 am 
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(I am posting here as the bike exhibiting this is not a DR. If mods feel this thread should be moved, so be it)

A youngster down the block from me just got his first "real" bike (his last was a pit bike), and the rear wheel has a strange condition.

When on a stand, the rear spokes are loose, really loose.

The adjusters are all the way tight (i.e. no more threads remaining) and when you turn the wheel or move it, the anchors protrude about 1/16 or from the hub.

The wheel and the spokes are equally "scarred/beat up", so I have no reason to believe they are anything but the original spokes. This is a 18" wheel.

I will also note the rear wheel must be turned by hand (it stops immediately when you let go) and it takes a fair bit of force to do so. I could not press the rear caliper out to get slack on the pads and I didn't have time to investigate further. Of course he thinks it's all good as long as it turns :sarcastic:

What stretches spokes like this? :s_dunno


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PostPosted: Fri Sep 29, 2017 9:32 am 
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Assuming this bike is a chinese pos, this could be nipple holes wearing in the rims, spokes too long to start with.

As for the rear brake, can the caliper slide on the pins?

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PostPosted: Fri Sep 29, 2017 10:02 am 
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Max Kool wrote:
Assuming this bike is a chinese pos, this could be nipple holes wearing in the rims, spokes too long to start with.

+1
All these things. It's quite likely the spokes were never properly tensioned from the factory.
Another common wear point is where the spokes hook into the hub.

With that much looseness in the spokes that wheel probably won't last a week. :fool:

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PostPosted: Fri Sep 29, 2017 4:48 pm 
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ProCycle wrote:
All these things. It's quite likely the spokes were never properly tensioned from the factory.
Another common wear point is where the spokes hook into the hub.

With that much looseness in the spokes that wheel probably won't last a week. :fool:

He's aware it needs to be addressed; he just thinks that non free wheeling rear wheels is ok :rolleyes:

Clearly he needs guidance.

Is there a spec for the rim hole diameter?


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PostPosted: Fri Sep 29, 2017 4:57 pm 
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Max Kool wrote:
Assuming this bike is a chinese pos, this could be nipple holes wearing in the rims, spokes too long to start with.

Actually, I recall it being a YZ that someone put horrible black plastics on.

I'll check with the youngster

Quote:
As for the rear brake, can the caliper slide on the pins?

I couldn't get it to, but I didn't spend a bunch of time either.

I'll see him on Sunday...


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PostPosted: Sat Sep 30, 2017 8:20 am 
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It almost sounds like someone put an 18" wheel on a YZ and used the stock spokes. Depending on the year it should have a 19" rear wheel.

Or things are just very worn out from running loose. I've worked on bikes like that before too. Owner wants new wheel bearings, and one was so pissed when I pointed out the 1" of side to side rocking in the wheel was all in the loose, bent, and broken spokes. And wallowed out and cracked hub. "But it just started doing this". No way, run a loooong time loose.

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PostPosted: Sat Sep 30, 2017 8:47 am 
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N3YMY wrote:
...The adjusters are all the way tight (i.e. no more threads remaining) ...
Hmm... I don't think this is likely. I'll bet the nipples are seized to the spoke threads - which is VERY common. At the point where the nipple would bottom out against the last thread the spoke would protrude on the inside (and into the tube) by a good 1/4". Instant flat tire.

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PostPosted: Sun Oct 15, 2017 6:02 pm 
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ProCycle wrote:
Hmm... I don't think this is likely. I'll bet the nipples are seized to the spoke threads - which is VERY common. At the point where the nipple would bottom out against the last thread the spoke would protrude on the inside (and into the tube) by a good 1/4". Instant flat tire.

Yep, seizure.

Oddly, they keep sending him the spokes for the front wheel instead of the rear though. :sarcastic:


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