These are problems with solutions I ran in to during the build that I couldn't find any previous experience on. Therefor this is an informative post for those who are curious.
The frame is 19.5" Inbred 29er with vertical drop outs and ICGS tabs. I wanted to run a 1x9 set up but didn't want to run a upper chain guide like MRP, Paul, etc.
To keep the chain in place, I chose to run a 32t chainring with a BBG 104bcd outer bash and BBG inner 64bcd bashwich. I also went with a Blackspire stinger (ICGS). The crank is Shiimano SLX M660. To round it up, I used a SRAM x9 short cage rear derailleur.
First of all. The inner bashguard will touch the frame without slightly bending the bashguard inward. This was easy and seams to be doing great.
Second problem: The Shimano cranks 64bcd bolts interfere with the ICGS tabs with the Stinger mounted. I had to grind down the heads of the bolts quite a bit for these to clear. I would not do this if you were running a granny ring as I dont think the bolts would hold the pressure after the modification. I do not know about clearance with other brand cranks and I have heard after running in to this problem that shimano cranks seem to interfere with ICGS mounting.
As far as how well this set up works, I have not dropped a chain in the 40 or so miles I have put on it with some small jumps and rooty technical descents.
Hope this helps others in the process of planning their build as I would have found this info very useful during mine. Here are some pics:
<a href="http://www.flickr.com/photos/53347313@N04/8281820128/" title="2012-11-29_13-14-11_931 by nissan2jz, on Flickr"><img src="http://farm9.staticflickr.com/8060/8281820128_bacc70a4e5.jpg" width="500" height="375" alt="2012-11-29_13-14-11_931"></a>
<a href="http://www.flickr.com/photos/53347313@N04/8281819562/" title="2012-11-29_13-14-25_542 by nissan2jz, on Flickr"><img src="http://farm9.staticflickr.com/8362/8281819562_42992865a5.jpg" width="500" height="375" alt="2012-11-29_13-14-25_542"></a>
<a href="http://www.flickr.com/photos/53347313@N04/8280765793/" title="2012-11-29_13-12-56_731 by nissan2jz, on Flickr"><img src="http://farm9.staticflickr.com/8205/8280765793_8a190255a4.jpg" width="500" height="375" alt="2012-11-29_13-12-56_731"></a>
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