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Old 04-16-05, 07:01 PM   #1
troie
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My goal is to transform my 24spd (3x8) into an 8spd (1x8) + RaceFace Bash Ring..

I bought a BlackSpire Mono Veloce chainring for my single ring.

The current crankset that I have is the stock Truvativ X-Forge.

Now, my confusion is the lining up of the holes for the ring, bahguard and crankarm. Um, they dont match! The BlackSpire ring and RaceFace bash guard have matching holes but I dont know how they will attach to my current crank arm.

I wont be keeping any of my current rings so how is the crank arm going to attach to the new ring and the new bash guard??? :confused:

Last edited by troie; 04-16-05 at 07:08 PM.
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Old 04-16-05, 10:35 PM   #2
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Simple answer it won't. The bolt circle holes have to match. What you could do is Dremel the teeth off the big ring into a bash guard as you save for a properly matched crankset
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Old 04-17-05, 07:56 AM   #3
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Originally Posted by Raiyn
Simple answer it won't. The bolt circle holes have to match. What you could do is Dremel the teeth off the big ring into a bash guard as you save for a properly matched crankset
Yeah, after staring at it for hours yesterday I realized that it wont work. So what exactly does BCD mean? I know of the different sizes and it looks like mine is 104.

I think I need to get a new BB and crankset if I want this single ring setup to work. Apparantly square-tapered BB's and my style rings are outdated.

The two parts that I already have are the BlackSpire Mono Veloce ring and the RaceFace Bash Guard.

Before I get a new crankset and BB I want to make sure that all four parts will work together. The crankset is going to be the FSA X-Drive and the BB is gong to be the RaceFace SRX.. Both are ISIS splined which Im assuming is the only thing that I need to match up?
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Old 04-17-05, 09:39 AM   #4
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http://www.sheldonbrown.com/gloss_bo-z.html

BCD as described by sheldon brown.
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Old 04-17-05, 10:11 AM   #5
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http://www.sheldonbrown.com/gloss_bo-z.html

BCD as described by sheldon brown.
Thx.

So is ISIS Drive the same as ISIS Splined?
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Old 04-17-05, 10:16 AM   #6
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I believe so.
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Old 04-17-05, 03:35 PM   #7
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Last question...does it matter what size ring bolts I get? Since Ill have just the one ring and the bash guard, will 9mm bolts be long enough?

Something like this:

http://www.jensonusa.com/store/produ...ing+Bolts.aspx
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Old 04-18-05, 01:26 PM   #8
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Standard sized bolts should work. Try asking in the mechanics forum, might get more hits.
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