Johan Bornman Posted June 29, 2009 Posted June 29, 2009 Shebeen, you're right. It is just over 1/12th of an inch, which is over spec.Interestingly, I've been using the Google conversion feature and typed: 2mm = inches? into the Google toolbar. I took the first answer at face value without doing a sanity check. The second entry (the Jewellery store one) is of course right. As for the paper ruler charge. I am innocent. I didn't even know they had paper rulers.
mtbfreak Posted June 29, 2009 Author Posted June 29, 2009 .......I do like the way you took one of those free builder's whorehouse paper rulers' date=' but i have found them to be inaccurate before (according to my Stanley) so be careful. [/quote'] lol...well spotted...it was close enough with my stanley, and verified with my 150mm vernier caliper...
Cassie Posted June 29, 2009 Posted June 29, 2009 Mtbfreak, the key to destruction might lie in cross chaining....are you a guilty culprit? Sounds like that is a good reason for creating those marks on the sidewall of the sprocket teeth....and not on the pressure face of the teeth (like we would expect the wear to show)...
Titanium Rocket Posted June 29, 2009 Posted June 29, 2009 JB, firstly let me acknowledge your huge experience and all your great contributions to this site.......1000%. But why so cynical of the ParkTool CC3 chain measuring device? Surely it is just a (crdue) gadget designed to simply give Joe Home Mechanic an practical idea of the condition of his chain. I.e.: totally buggered, or still fine, or replacement coming soon. End of story. If he wants to know the exact length accurately to two decimal places, (what the hell for guys..??), get a vernier or use your measuring system. So if the 0.75 indicator slips easily between the rollers of a (clean) chain, that's good enough for Joe Home Mechanic. He must then start the process: go buy a new chain, check his cassette, chainrings, etc. The Parktool gadget is not meant to be a precision instrument after all. But is it really so crap that we must throw them away?
Christopher Brunsdon Posted June 29, 2009 Posted June 29, 2009 As I'm still new to the scene I'm doing a lot of research into chain wear and replacement. I've come to the conclusion that "ride or no-ride" tools are not perfect and more often than not criticized - just because Park Tool has one does not mean they are perfect! The only way is a good old fashion ruler. Personally I would take 2-3 readings on a chain and then accept the longest measurement. Even chain wear is theory, real life is a reality. EDIT: Here is an awesome site that explains the error of measuring tools http://pardo.net/bike/pic/fail-004/000.html cbrunsdon2009-06-29 08:00:53
Christopher Brunsdon Posted June 29, 2009 Posted June 29, 2009 why would you use Paraffin to clean your chain??? not advisable.... http://www.nordicgroup.us/chain/ Use WD40 instead
Cassie Posted June 30, 2009 Posted June 30, 2009 Ha ha ha...found this very interesting comment on that website... What about all those fancy chain cleaners and lubricants?There is no advantage in using these expensive products over simple solvents and lubricants; don't waste your money. If on tour, a small bottle of Phil's Tenacious Oil is convenient, though less effective than submerging the chain in oil, or using foaming chain lubricant. The various chain products do provide some level of amusement. I think my favorite is "Bike Butter."It's easy to go into business selling chain lubricants. Just buy some small bottles and fill them from five gallon bottles of industrial lubricants. Create a fancy name, and convince bicycle shops to stock your product.http://www.nordicgroup.us/chain/phil.jpg http://www.nordicgroup.us/chain/flcc.jpg http://www.nordicgroup.us/chain/fltp.jpg http://www.nordicgroup.us/chain/fltpd.jpg http://www.nordicgroup.us/chain/letour.jpg http://www.nordicgroup.us/chain/synlube.gifhttp://www.nordicgroup.us/chain/whitelightning.gif http://www.nordicgroup.us/chain/t9.gif http://www.nordicgroup.us/chain/triflow.gif http://www.nordicgroup.us/chain/purpleextreme.gif http://www.nordicgroup.us/chain/golden1.gif http://www.nordicgroup.us/chain/bikebutter.jpg http://www.nordicgroup.us/chain/prolink.jpgFood for thought....
Cassie Posted June 30, 2009 Posted June 30, 2009 why would you use Paraffin to clean your chain???not advisable....http://www.nordicgroup.us/chain/Use WD40 instead Nothing wrong with using parrafin & and diesel for that matter... Just make sure you re-lube properly after this good clean....parrafin will actually remove all the lubricant inside the rollers...that's where you want to make sure your re-lubing penetrates to after cleaning.
jacostrydom Posted June 30, 2009 Posted June 30, 2009 So I bought a new chain and after installation took it for a Majik ride. The chain started to skip on the first ascent' date=' and as no adjustment could be made to resolve the skipping, lead me to inspect the cluster closely. The cluster now had some nice indentations on the teeth and is basically stuffed.[/quote'] Since the chain and cluster worked together don't throw them away, but continu using them together and they will give you many more miles of service.
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now