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Plastic thing behind sprocket(9 posts)

Plastic thing behind sprocketJonw440
Jun 9, 2001 2:14 PM
Hi,
I am wondering why you don't see those plastic "chain gaurds" on the rear of the sprocket on racing bikes? My Biachi Campione has it. Should I remove it? In case I havn't made myself clear.... it is the clear plastic round piece that goes behind the top gear (clinbing gear) and the hub on the rear wheel)
Thanks
Jon
Jon, its put there because of lawyers and lawsuitsDave Hickey
Jun 9, 2001 2:30 PM
It won't hurt anything if you remove it. Make sure your rear derailluer is adjusted properly so chain will not go into the spokes.
It protects the spokes from a poorly working derailleur...biknben
Jun 9, 2001 2:35 PM
If the deraileur went to far inward it could get caught in the spokes and damage the wheel. I saw a rear derailleur get torn off a frame because of this. The chain could also cause damage to the spokes if it got caught between the spokes and the largest cog.

I'd quess that racing bikes don't have then because it is assumed that the derailleur is tuned and maintained properly.

In the past I used to just cut them off with shears or wire cutters. I think my current "beater" has one on it. I've gotten older and don't care any more.
Slash & burn?Kerry Irons
Jun 10, 2001 2:39 PM
Shears and wire cutters are hardly necessary. If you have a cassette, you simply remove the cassette and the "spoke protector" slides right off. If you had an older bike with a freewheel, you remove the FW and the same thing happens. Since your cassette or FW should be getting regular maintenance, you throw the thing away the first time you have things apart. Simple as that. Let's assume that people posting on boards like this have a bias toward properly maintaining their equipment, thereby making "spoke protectors" completely unnecessary for this group of riders.
You got me there...biknben
Jun 11, 2001 7:07 PM
For some reason the CORRECT way to remove it escaped me and I just wrote the first thing that came to mind. I do remember using a pair of shears to remove one a long time ago. That was back when I didn't know what a freewheel was and I don't think cassettes were used yet. Anyway, I had no tools and just got violent. I worked for me at the time. Nowadays I would use the appropriate tool. Although I still don't have a freewheel tool. That probably explains why the plastic thing hasn't been removed from my beater.
re: Plastic thing behind sprocketLC
Jun 10, 2001 1:44 PM
I would only remove it if it starts to rattle or you just can't stand the look. It does not weigh much, but does look funny.
re: Why not make a feature of it?PingPong
Jun 11, 2001 9:59 AM
Paint it a pretty colour, even get a bigger one if you require a larger canvas. If it starts rattling you could attach bells to the spokes to mask the sound. Why not dress as a clown whilst riding? Or join the circus. Why not?
CrosswindsDCP
Jun 10, 2001 9:23 PM
I left mine in place until on a day with a particularly strong wind I realized that the superior cross wind resistance of my low spoke count wheels was more than defeated by that nice big plastic sail. Its gone now. Having one wouldn't be a bad idea if it were just a little larger than the cassette.
2 reasonsColnagoFE
Jun 11, 2001 2:10 PM
weight and assuming your ders are adjusted right there is little chance of having your chain go into the spokes.