Pardon my ignorance but what is this??
07-14-15 | 07:00 PM
#1
Thread Starter
Senior Member
Joined: May 2014
Posts: 180
Likes: 0
From: Nashville TN
Bikes: 2011 Giant Seek 1, 1995 Mongoose Alta, 2002 Raleigh M80, 2014 Scott Metrix 40, 1999 Trek 820
Pardon my ignorance but what is this??
So I just removed the crank that came with my bike and installed one with smaller chain rings. The package came with this plastic thing shown in the pic from the link just above the bolts. I have no idea what this thing is. I did not see anywhere I could have used it. Can anyone inform me as to what it is?
https://www.amazon.com/Shimano-M361-H...271TSEX99JPD11
I added a pic of it if it worked.
https://www.amazon.com/Shimano-M361-H...271TSEX99JPD11
I added a pic of it if it worked.
07-14-15 | 07:09 PM
#2
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
No idea, but maybe it's the "chainguard" mentioned. If so, it would go between the right crank and outer chainring. See if there's some sort of receiver for it there.
OTOH- you have all you need without it, so feel free to set it aside for future reference, in case the need becomes apparent later.
OTOH- you have all you need without it, so feel free to set it aside for future reference, in case the need becomes apparent later.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
07-14-15 | 07:28 PM
#3
Thread Starter
Senior Member
Joined: May 2014
Posts: 180
Likes: 0
From: Nashville TN
Bikes: 2011 Giant Seek 1, 1995 Mongoose Alta, 2002 Raleigh M80, 2014 Scott Metrix 40, 1999 Trek 820
No idea, but maybe it's the "chainguard" mentioned. If so, it would go between the right crank and outer chainring. See if there's some sort of receiver for it there.
OTOH- you have all you need without it, so feel free to set it aside for future reference, in case the need becomes apparent later.
OTOH- you have all you need without it, so feel free to set it aside for future reference, in case the need becomes apparent later.
07-14-15 | 08:32 PM
#5
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
As I said, save it someplace in case a need arises. Otherwise, if you don't miss it in any way, it doesn't matter what it's supposed to be. OTOH, you might ask the seller, who might even give you an answer since it was shown front and center in the sales photo.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
07-14-15 | 08:34 PM
#6
Thread Starter
Senior Member
Joined: May 2014
Posts: 180
Likes: 0
From: Nashville TN
Bikes: 2011 Giant Seek 1, 1995 Mongoose Alta, 2002 Raleigh M80, 2014 Scott Metrix 40, 1999 Trek 820
That sounds like a plan. Thanks
07-14-15 | 08:38 PM
#7
Senior Member
Joined: Feb 2009
Posts: 2,522
Likes: 7
07-14-15 | 10:36 PM
#8
Thread Starter
Senior Member
Joined: May 2014
Posts: 180
Likes: 0
From: Nashville TN
Bikes: 2011 Giant Seek 1, 1995 Mongoose Alta, 2002 Raleigh M80, 2014 Scott Metrix 40, 1999 Trek 820
It does not say anything other than its recycled. I had just noticed that it has a slit in it length wise and the parts that project out are hollow. It looks almost like a cover for something or maybe a chain ring cleaner or something.
07-15-15 | 04:06 PM
#10
"Fred"--is that bad?
Joined: Apr 2008
Posts: 512
Likes: 0
From: 214 Represent!
Bikes: Felt f85 (11); Trek 7.3 FX (07); Schwinn Super Sport (86); Specialized Rockhopper (87)
^^^That gets my vote. It looks like the arc is probably the same circumference as the big ring. Can't tell the thickness. In lieu of other more sensible answers, I align myself with alcjphil
07-25-15 | 12:32 AM
#11
Thread Starter
Senior Member
Joined: May 2014
Posts: 180
Likes: 0
From: Nashville TN
Bikes: 2011 Giant Seek 1, 1995 Mongoose Alta, 2002 Raleigh M80, 2014 Scott Metrix 40, 1999 Trek 820
