So my chain thread brought up a good point. 9spd sucks and really doesn't work for DH. YMMV, but what's required to go back to 8spd? Chain cassette and shifter, obviously, but do I need a new dérailleur or freehub, or are they compatible?
nope, the spacing between the gears is different so it pulls a different amount of cable. not compatiblecant you also use the shifter? just have an extra gear?
thanks dude. fact is I don't need 9 gears, and from what I understand most of the 8/7/6 stuff is all compatible, so there's no need to reduce further.chain cassette and shifter is all that is needed. everything else is compatible
I would suggest against 9 speed chain with an 8 speed cassette. It will work, but not as well as 8 speed chain.chain cassette and shifter is all that is needed. everything else is compatible
It seems like your biggest issue with your shifting has been your maintenance. You yourself said your chain broke because of something loose in the derailleur. Have you changed your cables and housing recently? (won't affect chain breakage but makes a significant change to your shifting). You are also going to wear out a chain a lot faster if you are trying to climb on a single ringed bike...dh or slalom. my guess is you are standing and using power to go up the hill instead of a normal setup where you can sit and spin. Yet another way you are going to wear a chain a lot faster.Mostly because I don't feel the need for 9 gears, and it seems like shimano compromised the strength of the chains to shrink it to fit 9 gears. The best shifting bike I've ever had was a 3x9 brand new all-shimano drivetrain, but my DH bike is seriously suffering.
I figure I'll make the switch primarily because I need a new shifter, as I'm currently running gripshift and I just don't like it for DH. Along with that, the derailleur is 1:1, and I prefer shimano shifters, so I may need a new one of those as well. Lastly, I just broke my chain, and the lack of a quality 9 speed chain manufacturer is surprising and extremely disappointing. It seems that everybody, from the high end KMCs, the XTRs, and the wippermans, all suck for certain people and do just fine for others. I'm not entirely sure what that means, but I'd rather move to something that works just fine for everybody.
I guess I'm just after something that's a little less fickle, and since I extremely rarely find myself using EVERY gear in a day, I usually find the sweet spot and use the lowlow gears to go uphill. Lastly, I don't race so I don't need a corn cob cassette for the perfect ratio.
What kind of chain did you break, did a link slide off of a pin? Did it have a power-link? or the special-shimano pin when it was installed?Lastly, I just broke my chain, and the lack of a quality 9 speed chain manufacturer is surprising and extremely disappointing. It seems that everybody, from the high end KMCs, the XTRs, and the wippermans, all suck for certain people and do just fine for others.
I dont know what your defenition is of fine, but the spacing between the gears isnt the same between 8 and 9 sp systems, the shifter moves the chain different Distances between cogs. there is no way you can have that shift properly throughout the range of the cassetteI run a X9 shifter, X9 derailleur, shimano 8spd casette and 8spd chain. It shifts fine, much better than the 105 derailleur and stx shifter with same cassette and chain.
Not true. Because of the slightly wider tolerances of 8 speed, you can be slightly less perfect in your setup, and get away with it. Myself, I prefer running a SRAM 8 speed X-7 trigger, and whatever deraileur you want. I find that the 1:1 ratio stuff allows for a less precise setup, or at least one thats more tolerant to mud and off-tension. I just really, really wish 8 speed x.9 or even x.0 shifters were available.An improperly setup 8 speed is going to shift just as badly as an improperly setup 9 speed.
This is wrong. I can't believe you work at a bike shop.Actuall just the cassette and shifter is all that is needed, even the nine speed chain is compatible
I said it was compatible, in a responce to.... What would I need. I never said it would be perfect, But hey its not like I have never seen it done, and never seen it work just fine. Does this mean the shimano reccomended 10 sp chain on my road bike wont work at all because its a nine speed cassette??? Wioth 10sp derailers front and rear.This is wrong. I can't believe you work at a bike shop.
While it might spin and make movements that resemble shifts, it certainly doesn't work even close to as well as it could. You give a guy **** for running a 9sp shifter on an 8sp cassette, and then tell somebody to run a 9sp chain? WTF?
Besides, the main advantage of an 8sp system is the stronger chain.
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My 8 speed sram set up works fine with a 9 speed chain. It may be more accurate with an 8 speed chain, but the 9 works fine for me. I'm only running it because I have it, and I will use an 8spd chain next,but my current set up is more reliable than a complete 9spd set up IMO.This is wrong. I can't believe you work at a bike shop.
While it might spin and make movements that resemble shifts, it certainly doesn't work even close to as well as it could. You give a guy **** for running a 9sp shifter on an 8sp cassette, and then tell somebody to run a 9sp chain? WTF?
Besides, the main advantage of an 8sp system is the stronger chain.
By 9 sp cassette, you mean 9 sp chain right???My 8 speed sram set up works fine with a 9 speed cassette. It may be more accurate with an 8 speed chain, but the 9 works fine for me. I'm only running it because I have it, and I will use an 8spd chain next,but my current set up is more reliable than a complete 9spd set up IMO.
I'd only recomend 9spd chain if you already have a near new one, otherwise just buy the correct 8spd one as it will change gears minutely quicker..
Edit.... Maybe I should have been more clear, if your going to keep you 9sp derailer, you should use the 9sp chain, seeing how the chain is wider, and wont roll in the derailer properly.
And I was pointing out you listed it as workign perfectly, which is not possible, if you truly have a 9SP shifter, on an 8sp cassette, we have had this discussion many times hereWell Dirty Mike, I am not recomending my setup or regurgitating industry "info" but when I start in the largest cog and press the upshift button once...guess what..., it shifts one cog at a time all the way to the smallest cog and vice versa. Maybe I got lucky, but say what you want, it works and I have not lost the chain yet.
It depends on your budget. There may be something that is more ideal but I didn't want to replace anything that I didn't have to.I gave it a try and and it works well enough that I am getting the gears that I want, when I want them, quickly. Just giving personal experience, nothing more.
As Build your own said, 8spd shifter+8Spd spacers.
The reason to run it is to get a dishless stiffer rear wheel without having any extra gears you don't use. If anything,your statement was even more flawed,you probably could nearly set up a 9 speed shifter to work with 6X 8 speed sprockets. Wouldn't be ideal,but you could get it fairly close. Best to stick with 8spd shifter+8Spd spacers and 9spd shifter+9Spd spacers.
I wish 7 speed never got phased out.
Obviously 'perfect' to you is a loose term. The spacing from one cog to the next and thus the offset from one gear to another in your shifter is not the same for 9 vs 8 vs 7 speed. 7 speed = 5mm cog to cog, 8 speed = 4.8 mm cog to cog, 9 speed = 4.34 mm cog to cog.
Best case scenario (center at mid cog) you are off by 2.1 mm at the highest and lowest cog. Worst case, you are off by twice this (4.2mm) at one end. Either way, something is mis-alligned and going to wear.
This 'works' because of the built in slop of the jockey pulley.