Bicycle Mechanics - Naked chainwheel skip?
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07-14-05, 07:50 PM
Assuming that I remove the front derailleur, using a "naked" front chainwheel with the existing rear derailleur and cogset, how often is the chain likely to skip off the ring? Once in ten miles? Once in a hundred? Other than leaving the derailleur in place as a chain guide, is there any riding technique or alternate method of preventing chainring skip? Thanks.
07-14-05, 08:17 PM
You mean, besides a bonafide chain guide? Something like this Rohloff piece could take the place of your front derailleur:
Also try a chainring without ramps and pins, if you can find one.
09-21-05, 05:43 PM
I liked the look of that chainguard so much I went looking for it on the internet. Here's what I found:
The chainguard pictured above (http://www.rohloff.de/index.php?lang=en&p=PRODUKTE/SPEEDHUB/Kettenfuehrung%20CC&d=)
Another "homemade" roller/guide available for purchase (http://www.gaerlan.com/dahon/gear.htm) (scroll down)
09-21-05, 09:58 PM
Mine came off jumping kerbs on my 2 smaller cogs of the cluster.
http://www.mountainbikes.net/mtbikes/videodetails.cfm?identnummer=6798&PNR=12412&kaufen=Kaufen Something like this will be put on Fri.
Currently I use a handmade rig. Many different guides\tensioners to choose from.
Also sandwiching the ring, bashring outer, plate inner will work.
09-22-05, 09:35 AM
Use an old front derailleur as a chain guide.
Set it low over the chainring, almost touching, and adjust the limit screws so it is position how you like it.
09-23-05, 08:45 PM
This unit can be unscrewed and rotated back to run as a device to stop chain jump.
Got it today.
Wicked. Some mods needed to get the upper pulley down onto the ring.
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