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3rd Eye Chain Watcher
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3rd Eye Chain Watcher
3rd Eye Chain Watcher on Alex's commuter

Third Eye Chain Watcher

$9.45ea.
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This product eliminates the possibility of a chain jumping off the smallest chainring and landing on the bottom-bracket shell or becoming tangled in the gears. Great for Cyclocross set ups with a single chainring, but they can work on almost any bike. They mount just under the derailleur clamp, so obvious limitations apply there. You'll need at least 2 inches of available seat tube underneath your front derailleur clamp, and the system aligns evenly with your granny ring, so any obstructions on the seat tube directly across from your granny ring's teeth may present fit problems. Black, 14 Grams.

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Reviewed 6/21/2014
by flak4af
Cycling Enthusiast
Huskerland
Value Rating
Overall Rating
1 of 3 customers found this review helpful.
worse than without

I had one of these on a mtn bike for years. It didn't prevent the chain from coming off the small chainwheel and squeezing between the chain watcher and the frame ... but made it impossible to get the chain back up on the cogs ... it prevents that very well! Took it off, threw it away.

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Reviewed 9/25/2013
by elwood
Competitive Racer
North GA.
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2 of 2 customers found this review helpful.
300 miles using this and a bash guard on my 1x9 and have yet to drop a chain.

Just built up my first 29er rigid, and did a 1x9 using a short cage X-7. 32t ring with a bash guard and the 3rd eye. 300 miles and 1 40 mile race and no dropped chain. Could not ask for better performance than that!

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Reviewed 1/24/2012
by Vic
Cycling Enthusiast
California
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Overall Rating
1 of 1 customers found this review helpful.
why did I wait so long?

I have always been careful shifting down the the small ring on my triple, but every once in a while, it dumps when I'm on a long ride and get a bit tired. I always knew about the chain-watchers, but when I replaced my cables, my front derailleur would not behave, and it was just before a 200km solstice night ride up Big Sur. Not exactly where you want to be dropping a chain. Put this on, and halleluia! No more dropped chains, no more extra caution, why did I wait so long! And this is on a recumbent with rotor rings. No problem.

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Reviewed 2/17/2011
by Chaz
Cycling Enthusiast
Metro Detroit
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1 of 2 customers found this review helpful.
A Must Have!

It's totally cheap insurance Like another reviewer said, if the chain should come off just rotate the crank forward and it will go back on. I bet Andy Schleck wishes he had one of these on the stage of the 2010 TDF where the chain came off during a shift.

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Reviewed 6/16/2010
by chain dropper dave
Competitive Racer
Portland OR
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0 of 1 customers found this review helpful.
Best bike component ever

This thing works soooo well and it is cheap, something that rarely exists in the world of cycling today. I use it on my cyclocross race bike and my commuter, its simple, light and works! Well worth $10

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Reviewed 8/26/2009
by onefun
Casual Cyclist
bay area, CA
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4 of 5 customers found this review helpful.
it works

If you have round seat tube and compact chain rings, this is a must have item for the bike. Even the chain is off, just rotate the crank forward. chain will get back on without get your hand dirty.

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Reviewed 9/3/2012
by chris (BikeTiresDirect.com Staff)
Vancouver, WA
Overall Rating
1 of 1 customers found this review helpful.
Simple, Works Great

This thing has saved me and the paint on my chainstays many times. Inexpensive and easy to install-feel silly even using the word install, it's so easy. Admittedly, a hose clamp inside some plastic won't win any design awards, but it's secure and works well-and will never wear out.

Originally, I worried the hose clamp part would dig into the frame's paint, but it's actually held a few millimeters off the surface. Only downside is that there's no way for a clamp setup like this to work with some carbon fiber frames' bulged out seat tubes. Overall, highly recommend for mountain and 'cross bikes, both singles and doubles.

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