Join Date: 07-05-2011
Location: Gothtown Sweden
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Re: Chain/Sprocket Questions
Sorry,but from a general POW i beg to differ. Again..from a general POW.
Rear sprockets for instance. Sure,we can make those from CNC cut Alumec that will indeed outlast most steels while being stronger too. The point is that most OEM rear sprockets are cast units that have been machined one way or another. I recap. Rear generic sprockets out of aluminium is commonly used cause of cost. From a wear POW they suffice but thatīs about it.
Main reason besides cost is that cast aluminium doesnīt workharden the same way as "forged" aluminium does.
Likewise for chains. Iīm not saying there ainīt plenty strong 520s or 525s around. Thatīs not the issue. Likewise thereīs really crappy 530 chains sold by wholesalers too.
However,to keep it real,if we compare apples to apples-Ie a quality 520 with a equivalent quality 530 the latter will be the stronger chain for the app.
For instance compare an Alfa classed 530 with the similar 520-both by japanese Tsubaki.
Like i wrote above,close friend works as an app engineer for one of this countries larger chain and gear companys. Hence why i can get a Tsubaki chain 7 days a week. Now..our "pep boys" over here also sell a 530,at approx 80 euros-which is still reasonable,but it is a POS chain that is basicaly a 530 only by size. Itīs to the point of beng dangerous and i for one wouldnīt put it on a bicycle even.
When it in turn comes to picking gears,as there are numerous different qualitys et al to choose from,we normaly do this from a quality POW only. Specific designs and looks we cut afterwards with a CNC mill.(Ligthening holes,cavitys and what have you not)
What i was trying to say with the 18E remark was that for those that use up a kit or two it might be an idea to look up an industrial warehouse basicaly to save money instead of bying it as a motorcycle part.
So if youīre running good quality steel gears i see no reason to toss those cause the chain per se has been used up? Again,please be aware that iīm talking street bike use here.
Racing...is a whole different ballgame,and when it comes to that end itīs all good if you ask me. However,iīm not even touching upon racing here. Streetuse ONLY.
Call me a cheap bastid....but i fail to see the reason to throw money out the window. Learn how to interpret sprocket wear...use steel gears...and replace chain on demand. In short,it saves money and at 18E a pop i for one can afford to swap chains at will.
Last edited by Racing; 07-14-2011 at 7:04 AM.