Repair old Knog tail light
11-30-21, 07:42 PM
#1
meh
Thread Starter
Join Date: Jul 2014
Location: Hopkins, MN
Posts: 4,702
Bikes: 23 Cutthroat, 21 CoMotion Java; 21 Bianchi Infinito; 15 Surly Pugsley; 11 Globe Daily; 09 Kona Dew Drop; 96 Mondonico
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1110 Post(s)
Liked 1,013 Times
in
519 Posts
Repair old Knog tail light
I've got this old Knog tail light ... Only thing wrong with it is the mounting binder broke. Anybody successfully repaired one of these?
11-30-21, 07:49 PM
#2
Senior Member
Join Date: Sep 2005
Location: Michigan
Posts: 3,706
Bikes: Trek 730 (quad), 720 & 830, Bike Friday NWT, Brompton M36R & M6R, Dahon HAT060 & HT060, ...
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 840 Post(s)
Liked 336 Times
in
251 Posts
Make holes on the two sides and connected them with wire?
Likes For 2_i:
11-30-21, 08:09 PM
#3
Senior Member
Join Date: Oct 2008
Location: Portland, OR
Posts: 3,835
Bikes: Trek Domane SL6 Gen 3, Soma Fog Cutter, Focus Mares AL, Detroit Bikes Sparrow FG, Volae Team, Nimbus MUni
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 892 Post(s)
Liked 2,053 Times
in
1,074 Posts
Not that brand, but my last blinkie that broke I just glued it on with gorilla glue. The eventual removal was a pain, but meh.
Likes For downtube42:
12-01-21, 07:25 AM
#4
meh
Thread Starter
Join Date: Jul 2014
Location: Hopkins, MN
Posts: 4,702
Bikes: 23 Cutthroat, 21 CoMotion Java; 21 Bianchi Infinito; 15 Surly Pugsley; 11 Globe Daily; 09 Kona Dew Drop; 96 Mondonico
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1110 Post(s)
Liked 1,013 Times
in
519 Posts
This is a clever solution, but sadly, this doesn't work with the small Knog light in the OP
12-02-21, 08:35 AM
#5
meh
Thread Starter
Join Date: Jul 2014
Location: Hopkins, MN
Posts: 4,702
Bikes: 23 Cutthroat, 21 CoMotion Java; 21 Bianchi Infinito; 15 Surly Pugsley; 11 Globe Daily; 09 Kona Dew Drop; 96 Mondonico
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1110 Post(s)
Liked 1,013 Times
in
519 Posts
Using the video posted above, this solution worked yesterday ... I didn't lose it on the N Cedar Trail (for those outside MSP area, it's a very rough paved trail), so I'd call that well tested! This is a basic ponytail holder looped around the broken binder. I tried a couple different options (like a Garmin mounting binder), and the ponytail holder had the best grip.
12-02-21, 03:38 PM
#6
Thread Killer
Join Date: Aug 2008
Location: Ann Arbor, MI
Posts: 12,428
Bikes: 15 Kinesis Racelight 4S, 76 Motebecane Gran Jubilée, 17 Dedacciai Gladiatore2, 12 Breezer Venturi, 09 Dahon Mariner, 12 Mercier Nano, 95 DeKerf Team SL, 19 Tern Rally, 21 Breezer Doppler Cafe+, 19 T-Lab X3, 91 Serotta CII, 23 3T Strada
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 3129 Post(s)
Liked 1,698 Times
in
1,026 Posts
You can superglue silicone effectively, I’m pretty sure. Or maybe using silicone RTV to glue it would work. Did you try gluing the strap back together?
Likes For chaadster:
Likes For 10 Wheels:
12-03-21, 08:32 AM
#8
meh
Thread Starter
Join Date: Jul 2014
Location: Hopkins, MN
Posts: 4,702
Bikes: 23 Cutthroat, 21 CoMotion Java; 21 Bianchi Infinito; 15 Surly Pugsley; 11 Globe Daily; 09 Kona Dew Drop; 96 Mondonico
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1110 Post(s)
Liked 1,013 Times
in
519 Posts
I haven't tried glue yet ... I'm not certain which glue (if any) will work with the silicone binder, but I'll talk with the folks at my local hardware next time I'm in there. Thanks!
12-03-21, 08:58 AM
#9
Senior Member
Join Date: Dec 2010
Location: northern Deep South
Posts: 8,895
Bikes: Fuji Touring, Novara Randonee
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 2599 Post(s)
Liked 1,924 Times
in
1,208 Posts
Not to be a downer (written as I prepare to be a downer) ...
It may be possible to repair that break this time. But how are you going to deal with the likelihood that there's another flaw in the strap that's about to break in the next week or month of riding? If the surface of the silicone is oxidizing and cracking ( <- speculation there), that seems like it's analogous to spokes on a poorly tensioned wheel: after they start breaking, best approach is to replace them all.
It may be possible to repair that break this time. But how are you going to deal with the likelihood that there's another flaw in the strap that's about to break in the next week or month of riding? If the surface of the silicone is oxidizing and cracking ( <- speculation there), that seems like it's analogous to spokes on a poorly tensioned wheel: after they start breaking, best approach is to replace them all.
Likes For pdlamb:
12-03-21, 09:17 AM
#10
Full Member
I had that same old light. Sadly mine died during the pandemic (I wasn't riding for a few months and when I tried to get it running again, it just wouldn't turn on at all) so I upgraded before I had this problem.
Found this 3d printed solution HTH https://www.thingiverse.com/thing:1562549
Found this 3d printed solution HTH https://www.thingiverse.com/thing:1562549
12-03-21, 10:08 AM
#11
meh
Thread Starter
Join Date: Jul 2014
Location: Hopkins, MN
Posts: 4,702
Bikes: 23 Cutthroat, 21 CoMotion Java; 21 Bianchi Infinito; 15 Surly Pugsley; 11 Globe Daily; 09 Kona Dew Drop; 96 Mondonico
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1110 Post(s)
Liked 1,013 Times
in
519 Posts
I had that same old light. Sadly mine died during the pandemic (I wasn't riding for a few months and when I tried to get it running again, it just wouldn't turn on at all) so I upgraded before I had this problem.
Found this 3d printed solution HTH https://www.thingiverse.com/thing:1562549
Found this 3d printed solution HTH https://www.thingiverse.com/thing:1562549
