bigger crank on scott scale?
Moderator: Moderator Team
Hello there
i have a scott scale 35 frame i wish to upgrade, so the crank has more teeth on the outer ring.
parts on bike:
front dérailleur = xt 9 speed, E type(bb mount) triple
crank = xtr m970 triple (largest ring is 44t.)
rear cassette = 9 speed dura ace 11-21 ( i hope to keep its got lots of life left in it)
rear mech = xtr 9spd (medium cage)
I hope to get a larger crank ring 50+? but the front mech is almost maxed out at 44t. ( 46 might be largest i can go)
this is a link to the frame
https://bikepedia.com/QuickBike/BikeSpe ... l=Scale+35
maybe i can change the chain to 10sp and the front mech to a racing bike double 10sp, and then use a larger ring?
thanks for any help
i have a scott scale 35 frame i wish to upgrade, so the crank has more teeth on the outer ring.
parts on bike:
front dérailleur = xt 9 speed, E type(bb mount) triple
crank = xtr m970 triple (largest ring is 44t.)
rear cassette = 9 speed dura ace 11-21 ( i hope to keep its got lots of life left in it)
rear mech = xtr 9spd (medium cage)
I hope to get a larger crank ring 50+? but the front mech is almost maxed out at 44t. ( 46 might be largest i can go)
this is a link to the frame
https://bikepedia.com/QuickBike/BikeSpe ... l=Scale+35
maybe i can change the chain to 10sp and the front mech to a racing bike double 10sp, and then use a larger ring?
thanks for any help
Road double will foul the chainstay as the chainline is smaller. Unless you get an old octalink bottom bracket about 10mm too long and chainset to match. Then the front mech won't reach.
46 is probably the largest, unless you try and get a compatible XT trekking front mech, that goes to 48 i think. Much bigger than that, you'll start sawing through the chainstay.
Any specific reason you want to turn your scale into a hybrid?
46 is probably the largest, unless you try and get a compatible XT trekking front mech, that goes to 48 i think. Much bigger than that, you'll start sawing through the chainstay.
Any specific reason you want to turn your scale into a hybrid?
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thanks I will look into the XT trekking front mech you mention or at least just get a 46 ring and see how that goes.mattr wrote: ↑Wed Jan 31, 2018 9:11 pmRoad double will foul the chainstay as the chainline is smaller. Unless you get an old octalink bottom bracket about 10mm too long and chainset to match. Then the front mech won't reach.
46 is probably the largest, unless you try and get a compatible XT trekking front mech, that goes to 48 i think. Much bigger than that, you'll start sawing through the chainstay.
Any specific reason you want to turn your scale into a hybrid?
I very rarely use the 22t inner ring and regularly wish the outer ring was larger. So I thought it might be an easy modification, or to go to a dura ace racer gear set up on this frame.
I can get to maximum pedal speed quite easy on this bike. But I do not want a racer bike as i do go over bumpy ground a fair amount. i like the bike allot but the 44t is just not the perfect gear. i upgraded to a 11-21 race cassette which helped though.
thanks again.
forgive, but your message appears to suggest that a 44t ring is perfectly adequate for everyone and that my needs are not justified.
if this is so, why are there larger rings made above 44 teeth? Why would companies bother making them? and people install and use them?
Could it be perhaps some people have stronger legs that prefer to pedal at a slightly slower frequency, but harder, to reach top speed?
maybe i am not comfortable at a higher rpm and can give more power at a lower rpm?
Or perhaps when going down a slight incline with the wind behind me pushing me along and i am frustrated that there isnt another higher gear to click too, maybe that is when i thought to get rid of this 22t i never use and hope to modify the crank to a more racer type set up?
if this is so, why are there larger rings made above 44 teeth? Why would companies bother making them? and people install and use them?
Could it be perhaps some people have stronger legs that prefer to pedal at a slightly slower frequency, but harder, to reach top speed?
maybe i am not comfortable at a higher rpm and can give more power at a lower rpm?
Or perhaps when going down a slight incline with the wind behind me pushing me along and i am frustrated that there isnt another higher gear to click too, maybe that is when i thought to get rid of this 22t i never use and hope to modify the crank to a more racer type set up?
not really, i just have some concerns with your reasoning.
Mainly that changing from the standard XTR/XT cassette to your 11-21 Dura ace cassette almost certainly got you exactly no extra gear inches, as the stock cassette that would ship with a 44t big ring 9 speed triple would be an 11-32. (the 12-34 used to come with the 46 tooth big ring triple. I've had both set ups)
Getting a better chainline (for touring). Using different sized tyres/wheels. Using a larger cassette (13 up are still available i believe, tourists like them for smaller ratio steps).if this is so, why are there larger rings made above 44 teeth? Why would companies bother making them? and people install and use them?
Even going down to speeds achievable at ~70 rpm your regular running out of gears would require between 300 and 330 watts. Which is not insignificant.Could it be perhaps some people have stronger legs that prefer to pedal at a slightly slower frequency, but harder, to reach top speed?
maybe i am not comfortable at a higher rpm and can give more power at a lower rpm?
Get into a tuck?Or perhaps when going down a slight incline with the wind behind me pushing me along and i am frustrated that there isnt another higher gear to click too, maybe that is when i thought to get rid of this 22t i never use and hope to modify the crank to a more racer type set up?
Don't think there is enough adjustment on an etype mech. IIRC My old m770 was as high as it would go on the 44T (with the insert adjusted as well.)
You'd need to find a trekking e-type mech. Or get a 38mm SRAM band on mech and lose the e-type plate.
Sorry, I didn't notice that it is e-type. FD-M660-E official spec is 44T, to find real spec try to move it to top height adjustment and measure clearance over 44T
Chainring diameters:
44T = 182mm
48T = 199mm
Most likely biggest chainring for all e-type FD is 46T
@mattr advise to "get a 38mm SRAM band on mech and lose the e-type plate." is a good idea
Chainring diameters:
44T = 182mm
48T = 199mm
Most likely biggest chainring for all e-type FD is 46T
@mattr advise to "get a 38mm SRAM band on mech and lose the e-type plate." is a good idea
'
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