Fitting a new Raceface Chainset?

canada16

Hey
I have a XT M770 Hollowtech 2 Chainset, 2009 or 2010 I think.
But just bought a 2010 Raceface Deus xc Chainset.

I think I have the tools, I have a Box that I bought from wiggle and it has a lot of tools in it.

If I have never done this before, would you recomend or take to the LBS.

Thanks

cooldad

Only tools you should need are a bb tool, the thingy for removing the bearing preload nut on the non drive side, and a hammer.

Easy job though.

canada16

I think I have the tool, is it just a case of using an alan key and the tool to remove the BB?

Then just screw the new one back in?

Or do I hand screw the BB in?

Dont want to mess up

Thanks

warpcow

Like Cooldad said, it's a 2min job. Just take it easy fitting the BB; you don't want to mess up the threads in a new frame. And follow the torque measurements as best as possible.

Otherwise you could just keep the Shimano BB in there (RF and Shimano are cross-compatible) until it dies and then install the new RF one. That would make most sense personally.[/i]

warpcow

It'll come with instructions won't it? Either that or follow Park Tools' guide.

canada16

Kinda wanted to sell the BB with the shimano Chainset as I would probably get more money for it.

I dont have a torgue wrench either, Maybe I can borrow one from someone at work or something, if I need one.

nicklouse

I would keep it as the RF bearings dont tend to last that long. ( you may be luck like some peopel but....).

canada16

Maybe I will sell the Raceface one then, as it will be new.
Do I need any grease or anything?

Thanks guys really helpful

canada16

Could someone please please find me a link on how to remove and fit this.

I want to remove a Shimano 2009 XT M770 and fit a 2010 Race Face Deus XC

Has a look at park tools, but one again found it not straight forward to follow and the cranks look nothing like mine in the pic, and they are removing stuff that I dont even have.

Anything easier?

Thanks again guyz

stu8975

Loosen the 2 allen key bolts holding the left crank, remove the pre load cap from left side,Lift the 'latch' bit that sits inbetween the the 2 allen key bolts, take left crank off, pull the rest out from the right hand side.

canada16

Oh that simples.

So I would assume just slide the new one in and tighten up then, nothing else to worry about? Nothing it going to POP out or jump out at me, just loosen and remove

Thanks mate.

Maybe I should just take it off and try.. LOL Just dont want to be in a postion were I mess it up and I wont be able to take it to work on monday, as use my bike for commutuing and off road.

BG2000

Here's a link to a PDF and Quicktime movie showing the installation of the Deus Chainset and BB :

http://www.silverfish-uk.com/products/5 ... tab=man#tc

If you are fitting the new BB, make sure you install the spacers correctly, as it's not always obvious with 68mm BB shells that you need to use 3 cup spacers overall.

canada16

Thanks for that, I will probably keep the shimano BB on the bike.

I have no idea what cup spacers are, or wether or not the new crank will come with these spacer.

Also heard from others that the shimano BB is far better than the Race face.

Thanks again

BG2000

Cup spacers are 2.5mm thick metal rings that go onto the Bottom Bracket bearing cups.

Here's a photo showing the drive side bearing cup being screwed into the frame with a couple of spacers fitted.



Each spacer means the cup will stick out 2.5mm further from the frame. If your frame's BB shell is wide (73mm) then you may not need any spacers at all.

With modern cranksets that use external bearing cups and tubular axles fixed to one of the cranks, you must get the cup spacing correct. If the cups are sticking out too far, when you tighten the crank arms, they will crush the cup bearings. With the correct spacing, when you tighten the cranks to the correct torque, they will lightly press against the bearings. If the cup spacing is too small, there will be a gap between the cranks and cup bearings, and you could get side to side movement in the cranks and they could even wobble a bit.

The other component that's dependant on cup spacing is the protective tube that sits between the cups, inside the frame. Here's a photo of a nice Hope version:



Without the correct cup spacers, you would effectively crush this internal tube, although it would probably withstand a lot of force. I think it's actually this tube that determines whether a BB is designed for a 68/73 BB or an 83 DH BB (well, sort of).

With RaceFace cranks, you also need the chainline spacers, which are small rubber coated 1mm thick rings that sit over the bottom bracket axle, between crank arm and cup bearing. Here's a photo showing one such spacer fitted onto the axle:



Your chainset should come with 3 of the 2.5mm cup spacers and a couple of the rubber 1mm chainline spacers.

Yes, I've heard that Shimano BB cups/bearings are better, although my RaceFace BB has been fine. A lot of experience people have with BB problems can be due to their BB shell not being faced well (doesn't have edges parallel with the threads). I've never seen any proper proof showing that RaceFace BBs don't last as long as Shimano.

It was a good move by RaceFace to stick with Shimano standards, especially now that they've gone. Their cranks will live forever, and you'll always be able to get Shimano BBs.

However, I like my X-Type DH BB and have just stocked up on some RaceFace BB service kits to keep me going for the next few years....

Good luck.

BG2000

canada16 wrote:

Thanks for that, I will probably keep the shimano BB on the bike.

I have no idea what cup spacers are, or wether or not the new crank will come with these spacer.

Also heard from others that the shimano BB is far better than the Race face.

Thanks again

Nice Vertex BTW. Sounds like you want to keep it Canadian !! Damn good idea that...

canada16

Sweet dude, that is very good, going to give it a go.

So just make sure you screw in the BB by hand make sure it goes into the grooves properly and do I need a torque wrench or just tighten, but not so much I put weight on it.

Seems very simples, I dont think I have any spacers, but will check

Thanks again for that.

I am not canadian, I just grew up there, I am actually british.. Ha

weeksy59

cracking post BG