Thorn Cycles Forum
Technical => Transmission => Topic started by: Matt2matt2002 on August 21, 2015, 07:50:13 pm
-
Hello folks.
Hats off to Andre for an excellent review of his chain / chaincase set up.
What follows is a mini homage to his study.
Raven Tour, bought second hand but Rohloff hub is from approx 2008.
October 2014 new KMCX1 chain fitted with 37/17 cogs
(Surley s/steel 37)
Hebie Chainglider fitted at same time.
No lube added.
Chain set to run slightly tighter than my usual loose/slack set up.
Always ran quiet - no noise or fiction that I could note.
Today - 20/8/15 after 10 months and 2654 miles chainglider opened.
Some of the miles were done in Tajikistan where the roads were in a very rough condition / dusty.
Also - on one memorable day I was up to both axels in mud with both guards clogged 100%.
So the 'glider was truly tested.
Here we go.
(https://lh3.googleusercontent.com/RG1PjNzOlueIACEatSD7H_yRvqcSnELh1W8YeLs7_QA=w1212-h909-no)
back of the 'glider off.
Good or good?
(https://lh3.googleusercontent.com/mLaSaMa5hVvMmr4ka4-HOaWKgmJvRmRnRMYpkIaEFTo=w1212-h909-no)
Front coming away now
(https://lh3.googleusercontent.com/6Hqfrgqxwr0-tM40vWbHbn9Zbs0MHXIdcW0XSOTdcrY=w1212-h909-no)
Still looking good?
(https://lh3.googleusercontent.com/G3rEd7cBeLWRey955dNSTjrzVndvhhzz6Fzh6cIJ5xM=w1212-h909-no)
A close up of the chain - pretty clean.
(https://lh3.googleusercontent.com/ps5qGkxBVh_AmbViurmKCW_r1X-pH8Uf0zM3mvuvrQo=w1212-h909-no)
I was tempted to give it a wipe but thought I'd post here for opinions before proceedings.
I have no chain gauge so cannot measure stretch.
There was more sag in the chain than I like - so turned the EBB to take it up.
I sense there is no more slack to be reduced with the EBB so will consider removing a link.
Any advice on this?
Many thanks folks
Esp. to Andre.
-
Hi Matt --
You don't need a special tool to measure the chain stretch. Just use a tape measure, and measure the length of 24 links. Each link is supposed to be 1/2", so on a new chain, those 24 links will be exactly 12". According to the Sheldon Brown website, once your chain is 1/8" longer than that, you should replace it.
See the "Measuring Chain Wear" section near the bottom of this page: http://www.sheldonbrown.com/chains.html (http://www.sheldonbrown.com/chains.html)
- Dave
-
Today - 20/8/15 after 10 months and 2654 miles chainglider opened.
Some of the miles were done in Tajikistan where the roads were in a very rough condition / dusty.
Also - on one memorable day I was up to both axels in mud with both guards clogged 100%.
So the 'glider was truly tested.
Congratulations, Matt. That's definitely a proper test, 4271km. Especially considering where you've been. That's what owning a touring bike is all about.
-
Very impressive, Matt! The Surly ring looks brand new, too!
-
It all looks very good to me, Matt, and likely much, *much* better than if itg had gone the same distance in the same conditions uncovered.
A wonderful testimony to a successful Chainglider experience, I'd say!
Best,
Dan.
-
Impressive result Matt. I had a chainglider on my RT for a similar distance and it was no where near as effective. I lubed mine and experienced a lot of wet weather. The chain had some surface rust and was superficially dirty but hadn't worn much.
-
That shot of the rear sprocket is the kicker. A sprocket (with fewer teeth) will always show more wear than a chain-ring. Yours still looks almost brand new with hardly any change to the tooth-profile.
Great results.
-
It all looks very good to me, Matt, and likely much, *much* better than if itg had gone the same distance in the same conditions uncovered.
A wonderful testimony to a successful Chainglider experience, I'd say!
Best,
Dan.
Dan, Matt is getting away with a 37 tooth chainring.
October 2014 new KMCX1 chain fitted with 37/17 cogs
(Surley s/steel 37)
Hebie Chainglider fitted at same time.
I know it isn't the 36/17 that you are currently using and wish hibie would make a chainglider to fit, maybe worth thinking about your moving to a 37 tooth chainring?