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Question on teeth capacity.

bendertherobotbendertherobot Posts: 11,684
edited August 2016 in Cyclocross
Thinking of building up a Pickenflick. 1x naturally.

I'd probably go 11-36 and 42t.

Now, I will probably end up on SRAM, I mean, it's just easier. But the shifters can be expensive and there are often good deals on RS685 knocking around.

Now, you can't use an XT rear mech there as I understand it, just won't work properly. So you're going to have to use 105 or Ultegra.

Ultegra has a 32t capacity. If you're only running 1 chainring how do you do the max chainring difference?
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Posts

  • keef66keef66 Posts: 13,123
    Thinking of building up a Pickenflick. 1x naturally.
    If you're only running 1 chainring how do you do the max chainring difference?

    Not sure if serious? With one chainring the difference is 0
  • bendertherobotbendertherobot Posts: 11,684
    keef66 wrote:
    Thinking of building up a Pickenflick. 1x naturally.
    If you're only running 1 chainring how do you do the max chainring difference?

    Not sure if serious? With one chainring the difference is 0

    I am serious. I had no idea if you needed a figure for it to work.

    On that basis it's 0 + 25 (36-11) but, it seems, that the maximum cog on an Ultegra mech is still short of 36 so the point is moot?
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
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  • keef66keef66 Posts: 13,123
    I think to run a 36t cassette you'd need a MTB rear mech. I believe 9 speed Shimano will work OK with 10 speed road levers
  • ugo.santaluciaugo.santalucia Posts: 26,817
    keef66 wrote:
    I think to run a 36t cassette you'd need a MTB rear mech. I believe 9 speed Shimano will work OK with 10 speed road levers

    Yes, but censored will want 11 speed, I'm sure... and obviously Shimano needed to tweak the pull/mech conversion ratio so that nothing is compatible with 11 (not even MTBike 11)
  • keef66keef66 Posts: 13,123
    keef66 wrote:
    I think to run a 36t cassette you'd need a MTB rear mech. I believe 9 speed Shimano will work OK with 10 speed road levers

    Yes, but censored will want 11 speed, I'm sure... and obviously Shimano needed to tweak the pull/mech conversion ratio so that nothing is compatible with 11 (not even MTBike 11)

    Good point, he does mention RS685 levers which appear to be 11 speed...
  • bendertherobotbendertherobot Posts: 11,684
    Yep. Will need to be 11 speed. Shimano really are missing a trick here. SRAM is the default choice for sheer ease.

    Mind, my plan is being tweaked as, it appears, it's still cheaper to buy a Pickenflick built up than try and do it myself.
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
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  • trek_dantrek_dan Posts: 1,366
    How about using a SRAM rear mech with one those pull ratio adjuster thingies? What the cost of Shimano RS hydraulic brifters versus SRAM Rival 11? Can't be that much.
  • bendertherobotbendertherobot Posts: 11,684
    trek_dan wrote:
    How about using a SRAM rear mech with one those pull ratio adjuster thingies? What the cost of Shimano RS hydraulic brifters versus SRAM Rival 11? Can't be that much.

    Can be as much as £100 or more. Sometimes the RS685 make it down to £300 whereas Rival are generally £200 rear shifter (and brake) and £220 front (and brake).
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
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  • ugo.santaluciaugo.santalucia Posts: 26,817
    May I ask why you want a Pickenflick? As I recall you have 2 (or 3) CX bikes already, so why another CX and not a gravel bike? And why titanium? Are you not too young for titanium? Titanium is for over 50 only
  • bendertherobotbendertherobot Posts: 11,684
    May I ask why you want a Pickenflick? As I recall you have 2 (or 3) CX bikes already, so why another CX and not a gravel bike? And why titanium? Are you not too young for titanium? Titanium is for over 50 only

    It's on the list. I'm consolidating. So the XLS and Bivio will become one bike. But it has to be adventure/gravel/cx. More of the former than the latter. My plan is to keep the cost down to a minimum and try very hard to keep both sets of Pro Lite wheels. One will keep the CX tyres on, the other will keep the Gravel tyres on.

    Come September there will be a road disc bike for commuting.

    I'm open to suggestions. Jamis Renegade looks good, Pickenflick looks good, it's hard to look beyond the 1x HRD Bish Bash Bosh.
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
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  • You can get a JTek travelmate to convert the cable pull to use an MTB mech with a road shifter or you can use a Wolf Tooth Road Link to move the location of a Road Mech and increase the maximum sprocket size
  • bendertherobotbendertherobot Posts: 11,684
    Ta.

    Have to say I'm leaning towards the Bish Bash Bosh now. But is it "special" enough. The Ti might make me 50 but it is lush.
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
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  • ugo.santaluciaugo.santalucia Posts: 26,817
    or you can use a Wolf Tooth Road Link to move the location of a Road Mech and increase the maximum sprocket size

    Nice!
  • trek_dantrek_dan Posts: 1,366
    Ta.
    Have to say I'm leaning towards the Bish Bash Bosh now. But is it "special" enough. The Ti might make me 50 but it is lush.
    On paper that should be awesome, but its just not very special is it? I still have no idea how PX manage to make their complete CX builds so heavy - 10.5kg for a full carbon bike? I guess they have to compromise all the finishing kit to get the frame/groupset at price point.
  • tgotbtgotb Posts: 4,714
    trek_dan wrote:
    Ta.
    Have to say I'm leaning towards the Bish Bash Bosh now. But is it "special" enough. The Ti might make me 50 but it is lush.
    On paper that should be awesome, but its just not very special is it? I still have no idea how PX manage to make their complete CX builds so heavy - 10.5kg for a full carbon bike? I guess they have to compromise all the finishing kit to get the frame/groupset at price point.
    10.5kg is going some; that's the same as my PX 29er, complete with suspension fork and dropper seatpost!

    They do seem to have a decent supply of heavy seatposts/stems/wheels; my XLSs (built by me) come in around 7.5kg, whereas their stock bikes with similar groupset (single chainring SRAM) are advertised at 9.1kg.
    Pannier, 120rpm.
  • bendertherobotbendertherobot Posts: 11,684
    The Bish Bash Bosh weight has to be off. 1250g frame (on par with XLS) Fork HAS to be lighter than the XLS (or at least equal) and no way 1x SRAM Rival is going to add all that mass. Wheels might be rubbish. But this has to be closer to 9kg than 10.

    Still holding off. The Bish Bash is a sensible choice (clearance, guards) but the Pick seems like a more emotional one (but also normal QR's etc).
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
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  • andypandyp Posts: 8,860
    May I ask why you want a Pickenflick? As I recall you have 2 (or 3) CX bikes already, so why another CX and not a gravel bike? And why titanium? Are you not too young for titanium? Titanium is for over 50 only

    Titanium doesn't corrode or rust, and doesn't need paint. It's ideal for cyclocross.
  • bendertherobotbendertherobot Posts: 11,684
    As soon as they knock £100 off I am on it.
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
    https://twitter.com/roubaixcc
    Facebook? No. Just say no.
  • tmjptmjp Posts: 1
    As soon as they knock £100 off I am on it.

    Like, umm, last weekend? Would have asked earlier, but I was waiting for my account to be activated.


    Anyway, I was on the verge of getting one myself, but then had a chat with the PX customer service. They told me the frame can only fit a 42T chainring. Is this really the case? I think something like 46 I could live with, but would really prefer 48. 42T seems really small to me - I mean, if you stick a 10-42 cassette on it, you'll have 1:1 gear ratio on one end, but are really limited on the other.

    I just wanted to check with anyone who actually has a Pickenflick if 42T really is the maximum you can have on it. There has to be some clearance left, but how much..?


    Thanks!
  • bendertherobotbendertherobot Posts: 11,684
    Yeah, saw that, but bought a SuperX and CAADX in the meantime..................
    My blog: http://www.roubaixcycling.cc (kit reviews and other musings)
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    Facebook? No. Just say no.
  • Alex99Alex99 Posts: 1,407
    You can get a JTek travelmate to convert the cable pull to use an MTB mech with a road shifter or you can use a Wolf Tooth Road Link to move the location of a Road Mech and increase the maximum sprocket size

    Just got back from Wales. I was using a 9 speed 11-34 cassette with a medium cage Tiagra derailleur (not supposed to go with a 34 max sprocket). Worked great though. I just wonder whether up to 36 would also work, even though not 'officially correct'?
  • thegibdogthegibdog Posts: 2,106
    I managed to pick up sram hydro brakes & shifter for £280 from Amazon Germany. Apex rear brake & s700 front brake/shifter (10 speed). Running with a GX2.1 rear mech. Brake & shift well, hood shape isn't the most ergonomic though.
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