Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the March Giveaway: Coming Soon 3/24


Shimano Deore BL-T610 brake levers | broken
#1
Hello, bike riders!
Our community member Gabriel has shared his unpleasant experience with Deore T610 brake levers: "After 2 years of very limited use ... I'm still trying to understand why is there so many holes in such a critical place"

Can anyone help by explaining the reasoning for such lever design and what might be the cause of the particular break (material quality, usage, design flaw)?

   
  Reply
#2
Community member John has shared his personal view:

"Well for a start it is only cast aluminium and the tensile strength of the majority of cast metals is limited dependent on the alloy content and casting process etc, that can have minuscule defects (bubbles) in the metal casting reducing the strength...

Though to be honest it is possibly due to a combination of "issues" that caused such a failure, one of them being that the bar securing band hex screw was over tightened...remember that according to the Shimano docs for this lever this should be between 6-8Nm torque and doesn't need to be 'gorilla tight'...!

NB: before anyone asks, yup I always use a torque wrench set to the manufactures recommended setting to nip up bike components, especially on cast alloy fittings...!"

See page 121
https://si.shimano.com/pdfs/dm/DM-GN0001-23-ENG.pdf
  Reply
#3
Always a good idea to have a glance at torque specifications table!
Autobahn
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
What tools have you bought recently?
Today 06:57 PM
Santini fluted frame
Today 06:47 PM
Expensive bikes with crappy wheels
Today 10:15 AM
Where are you from and What is your favo...
Yesterday 11:43 PM
2007 Trek Pilot S.P.A. 5.2
Yesterday 07:06 PM
2010 Specialized Hardrock
03-26-2024 09:16 PM
1990 Specialized Rockhopper How to Fluff...
03-25-2024 07:05 PM
Thread busted on right pedal crank
03-24-2024 08:52 PM
Trek domane tyre
03-24-2024 05:48 PM
Modern rims crack at spoke holes
03-24-2024 05:32 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Painkiller
21 posts
no avatar 2. ReapThaWhirlwind
16 posts
no avatar 3. Jesper
16 posts
no avatar 4. meamoantonio
15 posts
no avatar 5. GirishH
15 posts