Home vs Shop

[Baaisikilist]

Oh, and if you own a raliegh or the like and your bb and brake caliper mounts weren't faced properly from the factory,that gets done too...

[AndreZA]

Okay, let me refrase that. When it is stretched too much, you change the casette aswell and with every second casette, you change chainrings. Go and buy yourself an inches steel ruler and test for yourself.

 

Here's a little diagram I drew up.

 

 

[Dirtbreath]

Para

[WorcesterWheelers]

I don't have a torque wrench (its on my wish list)

 

BTL-52 TorqueFix ? Adjustable by twisting the grip. ? Built-in click mechanism. ? Range: 2 - 24 Nm. ? Durable hard shell box contains: ? Torque key. ? Allen keys 3, 4, 5, 6, 8, and 10mm. ? T25 torx. Instruction manual available here.

Recommended retail only R439-00.

 

PM If you'd like one delivered on Sat at the next PPA mtb funride.....

[madmarc]

Damm! Just taken my bike to get new chain fitted and they told me I need to change cassette and 2nd chain ring as well. Gonna cost me about R1000.00. Cassette and chain ring looked fine to me. Chain was just a bit stretched and didnt have time to fit one myself before the weekend.

 

Tell them you want to see the old cassette and chainring. If it does not look something like this then tell them to take it off and put back the old ones

 

also go read this link from ther esteemed master of bicycle engineering - the late Sheldon Brown (This is where Johan Boringman got all his knowledge)

 

http://sheldonbrown.com/chains.html

 

Pictures won't upload will post later!!!!!!

 

 

[madmarc]

 

 

It's a motorbuke sprocket; but a good example of wear

 

 

Excessive wear - i never seen a chainring look like this but anoither good example

 

 

Check ti 3rd & 4th gear on this cluster and note the elongated gaps between the teeth. the teeth are also worn sharp as opposed to the other gears - this needs to be replaced

madmarc2008-05-29 02:17:02

[madmarc]

Okay' date=' let me refrase that. When it is stretched too much, you change the casette aswell and with every second casette, you change chainrings. Go and buy yourself an inches steel ruler and test for yourself.

 

Here's a little diagram I drew up.

 

 

[/quote']

 

Mampara - how can you measure the chain and decide the cassette needs to be replaced. You need to inspect different to two components seperately. if the chain is worn (stretched) it does not mean the gears are worn as well. I have done 10 000km on front chainrings with 5 chains and i measured them on Monday night - they still fine just with a few rub marks from the chain, and thats fron a 9 speed sram chain which has such sharp edges you can shave with it.

[WillemT]

Well that depends on your technical skill and how much you know about the bike mechanics. I never take my bike to the shop to be serviced' date=' be it to replace wheel bearings, crank headset whatever. rather go buy yourself a nice toolset for R500 and you can do EVERYTHING yourself. [/quote']

 

You bought a complete toolset for R500? My torque wrench alone was more then that. Grease gun R100, cassette tool R120, cone spanners R60 ea x4, cable cutter R120, chain tool R80 (and that's why a piece broke off when  I used it the first time), multi tools about R300 for all.

 

 

 

If you read the next post: "I had some of the stuf already".

 

I must admit you really need to want to do it yourself. Also it's fun for me to build stuf so I build my own bike stand, ect.

I love to work on my bike myself and want to take the best care of it. I'm not saying it's like that at all LBSs but remember, to that mechanic it's just another bike, to me, my bike bike is my pride,(if that makes sense in english...).

[WillemT]

If you really want you can endlessly replace stuff but it's not really neccesary... If you put a new chain on and it works perfectly with the rest of the drivetrain without any gliches or jumping, then there's no need replacing al the rest. I've had the cassette and chainrings on my one bike for 4 years know and there's absolutely no problem, the chain doesn't jump when I stand up (i'm 104 kg) and shifting is perfect. Just don't wait till the chain is really shot! That way you'll get very good milage from the rest.

 

What I also do is to ride 2 or 3 chains at a time. don't know if it makes any sense but to me it does. Change them every week. that way you're wearing 3 chains and 1 set of all the rest.