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help?what do i need to change 2 single chainring and bash?

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Postby santacruz1987
Wed Mar 07, 2012 2:51 pm

hello!does anyone know what parts i need 2 change from triple chainring 2 single and bash on my trek remedy?
oh and do i need a bike mechanic to fit or is it possible to do my self without messing it up?
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Postby bagedntageed
Wed Mar 07, 2012 6:58 pm

it's a piece of poo to do mate.
first. find out what iscg mounts you have. it will be one of three posibilities. iscg 05. iscg old or no iscg tabs at all.
second, you need to decide what size of chain ring you want,
then you need to find a chain device that will fit your iscg tabs.
once you have all your bits its a case of remove the crank arm, remove chain rings.
fit new chain ring and bash guard, fit chain device, fit crank arm. adjust chain device and ride.
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Postby ObscuraSky
Thu Mar 08, 2012 9:52 am

bagedntageed wrote:it's a piece of poo to do mate.


Baged. I don't think it's as simple as you say; just removing a crank arm is difficult for someone who doesn't know what they're doing, and in any case, there's even more to it than you describe.

santacruz, if you're also planning on increasing the size of your (currently) middle ring - to compensate for the loss of higher gears - you may also need to get a larger inner ring too. It's difficult to explain, but a larger middle ring means there's less clearance fo the chain. If you're using the small ring on the front it may rub against the middle ring when you're also using the smaller end of the rear cassette.

And, you also need to think about chainring bolts as most bashrings require longer ones that those used for a 3 ring set-up.

Also, if you really want to go for it, you might also consider removing the bottom bracket and swopping a spacer over from the non-drive side to the drive side. Not having a large chain ring to worry about means you're able to shift the chainline out slightly - improving the ability to run small/small gears.

Personally I like the sleek aluminimum bashguards, like the new Raceface but chunky plastic ones are more robust. Doing something like this yourself can be very rewarding, but If you're not 100% confident I would reccommend getting your local bike shop to do it for you. Good luck with it.
Last edited by ObscuraSky on Thu Mar 08, 2012 12:22 pm, edited 2 times in total.
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Postby wythall1
Thu Mar 08, 2012 10:12 am

Quite right ObscuraSky,Its not quite that simple.
When you put an ISCG chain guide on of any description for a single front ring, the lugs for the granny ring on the crank set will foul the chain guide, if you space it, it will ruin the chainline completely. So your options are to replace the cranks, or carefully cut the lugs off with a sharp hack saw.
Also you will need to consider your drive ratio between the front ring and your cassette. I have converted my Transition to 1 x 9. I have 36T at the front and 12t-36t at the rear. Perfect for getting up the big hills, if not a little more work that it was before! :lol:

Have a look at the link to give you some ideas:

http://sheldonbrown.com/gears/

Hopefully this will be of some help to you.
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Postby santacruz1987
Thu Mar 08, 2012 10:26 am

thanks 4 advice!
might just take bike 2 evens cycles?
im bit paranoid bout doin myself in case mess it up.
THANKS 4 ADVICE! CHEERS
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Postby wythall1
Thu Mar 08, 2012 11:55 am

santacruz1987 wrote:thanks 4 advice!
might just take bike 2 evens cycles?
im bit paranoid bout doin myself in case mess it up.
THANKS 4 ADVICE! CHEERS


It is quite straight forward when you have the tools.
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Postby bagedntageed
Thu Mar 08, 2012 12:24 pm

thats half my problem. i assume folks have the tools etc to hand. (you know what they say about assume! it makes an ass out of u and me)
if you have all the things you need, it is a straight forward job to do. sometimes a bit of trial and error on the drive side spacing, which can be a pain in the arse.
it would probably work out cheeper going to your lbs as opposed to buying all the tools as well as all the parts you would need for the job.
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Postby bulldog
Thu Mar 08, 2012 1:08 pm

I would say get an essential tool kit like the halfords one
http://www.halfords.com/webapp/wcs/stor ... yId_242558

This has got all the tools you need to be able to build /re-build a bike. If you're not tech minded then you may have to go down the shop route and that will get very pricey and time consuming , Evans for example charge about £18 for a BB fit with a service, £27 on it's own then there's all the other fitting on top. And if you find you need to change setup you've got to go back = ££££

You'll save a fortune doing it yourself, I've built and service 2 bikes and service mates as well with my halfords kit and it's great . Bite the bullet and learn hands on , it could be the difference between a trailside fix or a long walk to the carpark.
Obviously specialised fork and shock stuff needs to be done by a pro but a fork lube and seal change can be done at home
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Postby oodboo
Fri Mar 09, 2012 2:28 pm

bulldog wrote:Evans for example charge about £18 for a BB fit with a service, £27 on it's own then there's all the other fitting on top. And if you find you need to change setup you've got to go back = ££££


BB might not be the best example as it may need facing/taping and those tools cost a fortune, but essentially bikes are pretty simple things and most of the work can be easily carried out at home. Just things like brake bleeds and suspension servicing can be left to the pros until you get enough practice/experience/confidence to take these on yourself.
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Postby ChumleyWarner
Mon Mar 12, 2012 7:21 pm

http://www.chainreactioncycles.com/Mode ... elID=40997

Buy this and crack on. I attempt everything and then take it to the shop if I (rarely) cock it up. Youd be paying for it anyway.

The only thing missing is a hammer for when you loose your temper and need to hit whatever your fixing. :D
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Postby bagedntageed
Mon Mar 12, 2012 7:45 pm

by hit something with a hammer he means the wife, kids or the dog. failing that the nearest inanimate person that comes to pass.
experiance talking hear. nowt better than slogging a 5 year old in the face when you can't get yer bb to shift.
:wink:
i'm one step closer to hell right now. lol.
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