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on my swift
i'm on 11-34 cassette, x9 super short rear mech, surly SS 33t chainring, an n-gear jump stop and a fsa bash ring..
though as on the flat I spent most of the time in 33-13 think of going to 32 on the front and 12-36 on the rear - sameish top end but lower bottom
XTR M970 cranks, middleburn slickshift hardcoat 34T middle ring, middleburn 22T hardcoat inner ring. E-13 DRS with machined out bashring.
Never, ever drops the chain. shifts perfectly. Was running a 36T but shifting was poor due to the position of the pivot on the 5. Using a medium cage XTR shadow mech. Very quiet setup too - even on an orange. Great for proper riding in the peak district.
The only issue I have is the bearings in the roller which frequently fill with mud and seize up.
Sorry for the poor quality photo - from my phone.
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or a trail bike used on rocky stuff where the chain bounces off lots?
E13 DRS, Blackspire stinger or similar dual ring chain device pretty much cures that problem, I’m using a shitty DMR on mine right now, which once I changed the roller works as well as an LRP or Stinger would, never drops the chain, I bet my HT “trail” bike rattles the chain a lot more than some 4-6” IT manager’s sled…
As for the weight saving, great you’ve saved a1Lb, I’m sure that pitiful bag of sugar will be a major comfort when your blowing out your arse on a long grinding climb where a few more grams and a granny ring would have made all the difference, I’ve owned single ring bikes they aren’t that versatile, if you’re going to have gears why not have a full range rather than a limited “in the middle” set that’ll be fine until your faced with a proper climb…
Mrp1x? what a crock, you’ve spent £40 because you can’t operate the limit screws on your front mech, and you’ll still need bottom roller or else chain ditches more than with a triple & mech setup so now it’s cost you at least £70, you may as well just buy a proper single ring chain guide or stick with a double/triple chainset, the weight saving is pointless if it’s functionally useless….
blackspire stinger didnt work for me, not on this bike anyway. ran one on a blur 4x and it was fine. i dont work in IT and the only sled i own is a plastic one. i thought we were talking about bikes?
out of personal preference i climb in the middle ring, a habit i got into on my blur 4x cos it climbed so bad in the granny. once you adapt your technique its not so tough, even on flats.
i dont use an mrp1x, though i hear they are pretty good for xc racer types. i run an lg1 and its great for the peaks etc. ive stil got all the gears and stuff for if i go somewhere that the climbs might break me (alps or something).
as i said before its not for everyone but for some of us there are benefits to setting a bike up this way, so for you to suggest that because you dont like it then it must be wrong or that a persons job dictates how 'gnar' they are kind of misses the point. thanks for trying though.
I would just like to point if anyone would like to run a BB mounted chain device, with ISIS cranks, i have an FSA platinum Pro E type BB that is ideal for this application i will take £25 posted for it