Overall, I think it'll be nice when there are more 2 x 9 (or 2 x 10) options out there for XC racers/enthusiasts. However, one of the benefits of having a granny ring is that if your chain misses the middle ring when you downshift from the 44, it has someplace to land. Even if you don't have any other use for the 22T, it can still serve that purpose for a very small weight penalty. No harm, no foul :thumbsup: I ride my XC bike as if it were a 32-44, but I left the 22T installed. Typical major climbs around here is switchbacking up stuff like this bluff: ~400-500ft vertical.ivantcs said:Should i change to 29/44 setup? Using XT crank, is it possible to make that setup in the first place?
What are the pros and cons of 29/44 setup?
If you often need your 22 x 28 combo, and/or your 22 x 32 combo, then even a 29 x 34 will not give you gears as low as those. Try going a month without getting lower than your 22 x 24, which is nearly the same ratio as a 29 x 32 would be, and see how it goes for you.With 29/44, should i be using 11-34 cassette? Currently using 11-32.
But don't you find a 32 x 12 a bit undergeared for XC racing? At 90rpm, you'd be doing only about 18mph. I'd have no trouble dropping someone whose gearing is holding them down like thatScarySlow said:I, for one, favor just ditching the 44t ring and leaving the 22/32 in place. Then, out back, use a road 12-27 cassette. This gives a good range for twisty singletrack and only loses the two lowest gear ratios (which I typically only use when I'm seriously blown...). And I'm really not all that strong. In the 8 years I've had the current crankset on my bike, I don't think I've used the 44t more than three times. So, off it goes! I'll always have the scar on the back on my right calf to remember it by...
I like the idea of the low-Q 2 ring crankset. I hope they get more mainstream soon.
The 11-34 Deore XT CS-M770 is about 40 grams heavier than the 11-32 version of the same cassette. Further weight listings: http://weightweenies.starbike.com/listings.phpivantcs said:I want a 29/44 chain ring setup to save weight.
However, i dont want to compromise anything.
If i got to use 11-34 cassette instead of 11-32 now, it would not save much too.
I had never use 11-34 before and dont know if the 34 is much lighter than 32
Well thought out response.G-Live said:Lots of threads on this subject out there.
How good are you at Excel?
Put all the gear ratios on a spreadsheet and find out exactly what you will be gaining and or missing by changing chainrings.
What I found is that by running a 36 tooth middle ring as my big I only lose the 44/11 ring/cog combo on an 11-34 cassette (36/11=a 44/*13.5 combo). I doubt that I ever used that while racing even with my 26" bikes. By using a 24 tooth granny I gain a little range with the 12 tooth chainring spread. I could really get by with a 22/34 combo but I doubted my manhood at that point I have also thought about using a 22/36 combo but I tend to ride in the 24 quite a bit in singletrack too, especially when coming up on people I plan on passing to save some energy. The 22 is a bit too low for me for that.
Quite a bit lighter losing the 44 than the 22. 40-60 grams..or more?
Better trail clearance with a 36 "big ring".
Most riders/racers benefit from the lower end of gearing than the 44/11 top end I would guess Especially if you are a "spinner"
Better chainline in the "big ring" since it is in the middle position.
Loss of the absolute high end 44/11 and 44/12 depending on the cassette (again, I would thing that even high level racers benefit more from a lower gear than the 44/11)
Anything else I am missing?
I came to the 24/36 set up due to JHK running a 26/38 on his Superfly. I figure I am probably not quite as strong of a racer as him so I could get away with a little easier gearing . My "race" bikes are also my normal mtb bikes and there are a few places I need a fairly small granny.:madman: I am using Force and Rival front der's with gripshift.:thumbsup:duke of kent said:Well thought out response.
And, I agree with pretty much everything said.
I'm a pretty strong TTer on the road, and a very strong climber. And when I'm on my 29er, I've found that I've yet to use my 12t and 13t cog in conjunction with the 44t when doing an interval on flat ground, on my 12-27t DA cassette. In talking to the mechanic (who happens to be the road team mech as well) at my shop, we've agreed that a 26/28 and a 40t are the way to go, for me. I can still kill it on the flats (fireroads, transitions) while having more than enough gear to get me over any hill in the region.
I'm not sure how well the X.9 FD will like the 14t jump, but if it doesn't work well, I can always convert a Red or DA front mech to top pull.
Actually i'm still not sure if i should try it out.mechBgon said:It is certainly interesting to see the variety in this thread. I couldn't conceive of giving up the big chainring or the 11T cog, not to mention both. In fact, I wore out my XT 44T before my 32T. I guess I'm way off the norm
So anyway ivantcs, are you going to try out a 2 x 9? If you want to kill two birds with one stone, the Weight Weenies section of the forum would be a good place to ask about light crank/BB setups that'll take a 29-44 combo, if that's what you want to do. And there's plenty of other good advice on weight reduction there too
What model of XT crank is it? Look on the inboard side at the pedal hole and it should say the model, which begins with FC-.ivantcs said:Actually i'm still not sure if i should try it out.
My current middle chain ring is abit worn. So its time for a new one be it 29t or 32t
Now, i'm still not sure if my crank can fit a 29t and also not sure if the 29t and 44t have a gap too big for fd.
Anyway, what 29t chain ring i can get? Shimano dont make them right?