Secure or exaggerated? (Chain drop device on di2)
04-13-23, 09:52 AM
#1
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Secure or exaggerated? (Chain drop device on di2)
What do you think regarding the use of this little device on a bike equipped with Di2.
Would be better to be extra safe (more exatra in case you have a nice paint finish), or is just exaggeration?
Would be better to be extra safe (more exatra in case you have a nice paint finish), or is just exaggeration?
04-13-23, 09:59 AM
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The weight and cost are trivial, so it can't hurt. Nonetheless, a properly set-up system won't drop the chain in normal riding, and it's even less likely with a clutched RD.
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04-13-23, 10:01 AM
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My Di2 equipped Fuji came with one from the factory. I haven't needed it but, you never know.
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04-13-23, 10:56 AM
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Is the possible scratch or marring of the finish on the bike going to annoy you? They don't bother me.
04-13-23, 11:43 AM
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Absolutely use it if you have a carbon frame, as the chain can dig into the frame material. In 14 years of di2 I have dropped the chain twice. Both times I was going downhill towards a stop sign and braking hard on washboard surface.
04-13-23, 01:07 PM
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04-13-23, 02:58 PM
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Ok i've installed it.
Weight is so insignificant , the original bolt weight 3g. The carbon part with the titanium bolt weight 4g.
Weight is so insignificant , the original bolt weight 3g. The carbon part with the titanium bolt weight 4g.
04-13-23, 05:33 PM
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04-13-23, 06:02 PM
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I knew a guy who actually sawed through the BB shell to the extent the frame had to be trashed. Obviously an abundance of user error, but still....
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04-13-23, 11:25 PM
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I run a K-Edge one as it is gold and matched some parts of my bike so it was an easy choice. I blew up a derailleur once going up a hill my Synchro-shift decided to do its job and but didn't realize I didn't need it to shift and it blew up the cage. Shimano warrantied it and I got rid of Syncrho-shift and no issues since but I have that little guy just in case.
04-14-23, 06:42 AM
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Cheap insurance. Only bikes w/o them are unpainted titanium which if the chain ever drops the scratches can be polished out.
