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Edit: This thread is about the standard Mojo.
Third edit: I am leaving the post below as is... But: The only lasting critic I have on the MRP guide for the Mojo is the lack of documentation. I could have sakved myself a bit of tinkering if the documentation would have been clear. Anyway... Now I am running the MRP guide as actually intended by Ibis, including adaptor (second edit). Doing some work with BB spacers ultimately solved all issues. My McGuiver solution isn't really needed. But maybe it is inspiration for retrofitting other guides.
Oh - and a 1x9 with a 32 in the front and a 11-34 in the back works. But it is hard at times.
Second edit: What I describe below as the HD axle bolt is actually the official retrofit adapter. I didn't know/understand when Ibis support talked to me.
So finally I've had enough of chain suck and the chain guard rotating. Coughed up the money and ordered the HD chain guide. Friendly Mojo support called me and informed me I would also need the HD axle bolt. Shelled out another $14... Stuff arrived tinkering started.
Findings:
1) Using the prescribed way to retrofit the chain guide has drawbacks: The axle bolt needs to be shortened using a lathe (who got one?). The HD axle bolt does not cover the bearings (drive side), so 2 oddly specked washers/shims would be needed (beyond what ACE stocks).
I spend some time looking at this and now start to realize why Ibis has not come up with a solution. This is complex for any given frame and crank combination. If Mojo frames have slight variations per model year and to allow for different bottom brackets and cranks probably quite some custom washers and shims need to be part of a retrofit package.
2) There seems to be a simpler solution: On my Mojo the axle and both bolts are hollow. A M6 bolt fits nicely in. So my personal solution is to leave the standard Mojo pivot axle in and fix the chain guide plate using a M6 bolt plus some washers.
See the photos.
Now, this is certainly not the perfect solution. But maybe the right direction and perhaps somebody more talented can refine it.
However, if this is dead wrong and dangerous... let me know.
Third edit: I am leaving the post below as is... But: The only lasting critic I have on the MRP guide for the Mojo is the lack of documentation. I could have sakved myself a bit of tinkering if the documentation would have been clear. Anyway... Now I am running the MRP guide as actually intended by Ibis, including adaptor (second edit). Doing some work with BB spacers ultimately solved all issues. My McGuiver solution isn't really needed. But maybe it is inspiration for retrofitting other guides.
Oh - and a 1x9 with a 32 in the front and a 11-34 in the back works. But it is hard at times.
Second edit: What I describe below as the HD axle bolt is actually the official retrofit adapter. I didn't know/understand when Ibis support talked to me.
So finally I've had enough of chain suck and the chain guard rotating. Coughed up the money and ordered the HD chain guide. Friendly Mojo support called me and informed me I would also need the HD axle bolt. Shelled out another $14... Stuff arrived tinkering started.
Findings:
1) Using the prescribed way to retrofit the chain guide has drawbacks: The axle bolt needs to be shortened using a lathe (who got one?). The HD axle bolt does not cover the bearings (drive side), so 2 oddly specked washers/shims would be needed (beyond what ACE stocks).
I spend some time looking at this and now start to realize why Ibis has not come up with a solution. This is complex for any given frame and crank combination. If Mojo frames have slight variations per model year and to allow for different bottom brackets and cranks probably quite some custom washers and shims need to be part of a retrofit package.
2) There seems to be a simpler solution: On my Mojo the axle and both bolts are hollow. A M6 bolt fits nicely in. So my personal solution is to leave the standard Mojo pivot axle in and fix the chain guide plate using a M6 bolt plus some washers.
See the photos.
Now, this is certainly not the perfect solution. But maybe the right direction and perhaps somebody more talented can refine it.
However, if this is dead wrong and dangerous... let me know.
