Help with Race Face Turbine Crank...

bertberr

Right, hope somebody on here can help with these questions about a RF Turbine crankset. They are on a 2002 bike that I bought second hand about three to four years ago (believe they were the OE fitment). I've noticed a small amount of play when gripping the cranks in each hand, and also some damage to the middle chainring,so...

1. The crank bolts measure 8mm flat to flat, just a bit bigger than my largest allen key. If I buy a hex socket (or set), would I need an '8mm' hex socket or they do they classify them corner to corner?

2. I took the large chainring off hoping I could just slip the middle ring off over the spider, but its just too tight. Looks like I need to take the drive side crank off to get the middle ring off, is this easy? Do I need any special tools? Not even sure if the Turbine is square taper or ISIS - or even if this makes any difference to how you'd go about removing the crank?

Al help greatly appreciated

supersonic

1: Will be 8mm.

2: If the bolt is self extracting, it will come off when you remove the bolt. If not you need to ientify the bottom bracket axle and get the correct crank extractor. RF may have archives, or you may be able to see a bit of the axle. You'll see the fitment with the bolt out anyway.

nicklouse

first find out what the mounting is.

parktools have info on all fittings.

flat to flat is the size so an 8mm allen key.

remove bolt and have a look.

Or post up some pictures.

bertberr

OK, I'll get me an 8mm hex to work with my 3/8" socket and take a peek at the axle...

Checked RF website a couple of days ago, but no support for their old products, not even spec sheets...

I forgot to say in my first post, but would any 104 BCD middle ring work with my RF Turbine, or does the shape / angle of the teeth vary between manufacturer? Only I've seen an FSA one at just over £20 which is about a third of the price of a new RF Turbine chainring.

supersonic

Should work fine.

bertberr

Well, I removed the driveside crank with an 8mm hex and the crankbolt just came straight out... followed by the crank itself :?

From reading articles on Bicycle Tutor and Park Tools, I thought I'd got a basic overview of the differnt types of BB and crank attachment used by Race Face a few years back. So I was expecting either a 'self extracting' crankbolt or the need to use a crank extractor tool, but neither of these assumptions were correct.

I was expecting a separate thread (27mm L/H thread) on what I thought were the dust caps of the self extracting crankbolts, but when they just came out the black plastic caps that the crankbolt sits in was smooth and only 2mm or so deep... :? (see pic)

While I'd figured that the BB was a standard 'ten' splined ISIS Cartridge type, I was left wondering after clocking the end of the axle and the rings at each end of the BB shell. According to Park Tools, all cartridge BB's should have a fixed ring one side and a removable ring the other side, but mine has a black 'notched' ring on BOTH sides (see pics).

Can anybody RF gurus shed any light on what I actually have here?

Thanks
** There doesn't appear to be any way of attaching a photo from my pictures - any ideas on this too :?

anjs

Put them on a hosting site like photobucket of flickr and then link to them in the message

bertberr

OK, here goes

[img][/img]



[img][/img]

anjs

Looks like just a standard ISIS set up to me

bertberr

OK, so to confirm then,

This is a standard ISIS BB?

I don't have 'self extracting' crank bolts? (if this is the case and i didn't need a crank extracter, then how did the crank just come off...???)

How would I remove the cartridge BB, as both BB caps (black notched rings in the pics) are the same - could I undo either one? Would I need a special tool?

Cheers
BB

supersonic

Sometimes they do just fall off.

Is standrd ISIS.

Use a standard splined cartridge BB tool for both sides - one is still a removeable cup, the other the cartridge. Beware of thread orientation.

bertberr

OK, thanks, and those crank bolts are just standard bolts then - not self extracting (no x-type wording / undo this way etc wording)?

supersonic

Can't see any threads on the caps, so look standard.